SAFETY CONSIDERATIONS

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3 SAFETY CONSIDERATIONS CAUTION RISK OF ELECTRICAL SHOCK Do Not Open Avis Risque de choc electrique Ne Pas Ouvrir For user safety, one or more of the caution labels shown here may be affixed to the side or rear panels of this equipment. The significance of the two symbols enclosed by triangles is described below. This symbol means that dangerous voltages are present within the equipment. These voltages are not insulated and may be of sufficient strength to cause serious bodily injury if touched. This symbol may also appear on schematics. This symbol calls attention to a critical procedure or means that refer you to the instruction manual for operating or service information. Only qualified service personnel are to install or service the equipment. This symbol may also appear in text and on schematics. WARNING: To reduce the risk of fire or electrical shock, do not expose this equipment to rain or moisture. This manual is intended for use by purchasers of the Standard Communications Stratum II Modulation System and their qualified technicians. This document is the property Standard Communications Corp. (SCC), and embodies proprietary subject matter. All design, manufacture, reproduction, use and sale rights regarding the same are expressly reserved. This manual may not be reproduced without written consent from Standard Communications Corp. All copyright, patent and trade secrets for this manual, the product, and its included software are expressly reserved by Standard Communications Corp. Page I Owner s Manual Stratum II Modulation System

4 IMPORTANT SAFEGUARDS Standard Communications Corp. (SCC) strongly advises you to read and understand the following safety instructions prior to installing and operating this equipment. 1. Read These Instructions First All safety and operating instructions should be read before installing or operating this equipment. Safety and operating instructions should be retained for future reference 2. Retain This Instruction Manual Safety and operating instructions should be retained for future reference. 3. Heed Warnings All warnings on the equipment and in this Owner's Manual should be adhered to. 4. Ventilation Do not block or cover slots and openings in this equipment. These are provided for ventilation and protection from overheating. Maximum operating ambient temperature is 40 C 5. Power Sources Operate this equipment only from the type of power source indicated on the rear panel. CAUTION: For continued protection against risk of fire, replace the fuse (if necessary) with one of only the same type and rating. 6. Grounding or Polarization This equipment may be equipped with a polarized AC line plug (a plug having one blade wider than the other). This plug will fit into the power outlet only one way. This is a safety feature. If you are unable to insert the plug into the outlet, try reversing the plug. If the plug still does not fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of a polarized plug. 7. Servicing Refer all servicing to qualified personnel. Opening or removing covers may expose dangerous voltages. When replacement parts are required, make sure the service technician uses only replacement parts recommended by SCC. Unauthorized substitutions may result in fire, electric shock, or improper operation of the unit. 8. Cleaning Unplug the equipment from the AC power outlet before cleaning. Do not use liquid or aerosol cleaners. 9. Lightning For added protection during a lightning storm or when the equipment is left unattended or unused for long periods, unplug it from the power outlet and disconnect the cables between the equipment and the antenna subsystem. These precautions will prevent damage to the equipment that could be caused by lightning strikes or power line surges. 10. NOTE TO CATV SYSTEM INSTALLERS: This reminder is provided to call your attention to NEC Articles , , and that provide guidelines for proper grounding. In particular, these articles specify that the cable ground shall be connected to the building grounding system, as close to the point of cable entry as practical. Page II Owner s Manual Stratum II Modulation System

5 TABLE OF CONTENTS Chapter 1 Introduction What Is The Stratum II Modulation System? Elements of a Stratum II System NRF1000 Frame NAM1000 Modulator NOP1000 Off Air Tuner NSE1000 Stereo Generator with optional SAP, AGC NSM860 Stereo Modulator NAM860 Modulator Blank front and rear panel covers Equipment that Interfaces with Stratum II Who Should Use this Manual Summary of Features The NRF1000 Frame and Controller The NAM1000 Modulator NOP1000 Off Air Tuner NSE1000 Stereo Encoder The NSM860 Modulator The NAM860 Modulator Control Modes General Local (Front Panel) Control Remote Control (Ethernet Port on Rear Panel) Chapter 2 Specifications NAM RF Output IF Input And Output Video Audio Baseband / 4.5MHz Subcarrier Connectors / Monitors Alarms / Monitors NOP Performance NSE MHz, VIDEO And BTSC BASEBAND Audio Connectors Alarms / Monitors NSM860 and NAM RF Output IF Input And Output Video Audio Baseband / 4.5MHz Subcarrier Connectors / Monitors Alarms / Monitors Power Page III Owner s Manual Stratum II Modulation System

6 TABLE OF CONTENTS 5. NRF Redundancy Loop RF Output Interface EAS, Remote, Reference Power Panel Connector Table General Chapter 3 Installation Planning The Installation Unpacking The Unit Before Mounting The Frames Set Internal Switches Install Cards in the Rear of the Frame Positioning Mounting The Frames Jumper PCA (AS ) and Rear Panel Cover Instruction: Connectors Connecting The Stratum II To Your Equipment Interconnecting Frames Frame to Frame Communications Redundancy signal interconnection Connecting EAS Locking to common reference Applying Power Chapter 4 The NRF1000 And How To Set Up Initial Setup Make The Display Easy To View Navigation Rules System Monitor Display Frame Controller Display Displaying the desired module Backup Setup/Monitor Display Backup Setup Backup Monitor Network Display And Addressing Network Addressing Setting up the Slave Unit Clock Display Service Channel Database Model Number and Options Part Number Page IV Owner s Manual Stratum II Modulation System

7 TABLE OF CONTENTS Description RF Interface Redundancy Router Front Panel Control Power Panel Chapter 5 How To Operate The NAM Front Panel Components Rear Panel Components Installing The NAM Jumper and settings Swapping Modules NAM1000 Displays The NAM Modulator Display The NAM Config Display NAM Redundancy Chapter 6 How To Operate The NOP Installing The NOP Rear Panel Alarm LED NOP1000 Displays The Off Air Proc Display The Configuration Display Redundancy with NAM/NOP or NSM/NOP Pair Swapping Modules Chapter 7 How To Operate The NSE Front Panel Components Rear Panel Components Installing The NSE Jumpers and Setting Installing The SAP2000 Option Installing The AGC2000 Option Jumper and settings NSE1000 Displays The NSE Stereo Display The NSE Config Display NSE Redundancy Chapter 8 How To Operate The NSM Modes of Operation Video Modulator and BTSC Encoder Video Modulator and External 4.5MHz Input Video + 4.5MHz Modulator BTSC Encoder and Upconverter IF Up Converter Channel Plan Front Panel Components Stratum II Modulation System Owner s Manual Page V

8 TABLE OF CONTENTS 3. Rear Panel Components Jumpers and Setting Installing The NSM Swapping Modules SAP Option NSM860 Displays The NSM Stereo Modulator Display The NSM Config Display NSM Redundancy NSM compatibility as a spare Chapter 9 How To Operate The NAM Modes of Operation Video Modulator and Monaural Audio FM modulator for an external BTSC signal and Upconverter Video Modulator and External 4.5MHz Input Video + 4.5MHz Modulator IF Up Converter Front Panel Components Rear Panel Components Jumpers and Setting Installing The NAM Swapping Modules NAM860 Displays The NAM Modulator Display The NAM Config Display NAM Redundancy Chapter 10 Redundancy Overview OBJECTIVE OF REDUNDANCY REDUNDANCY MODES WHY DOES REDUNDANCY AFFECT MY PLANT LAYOUT? How does Redundancy operate? Controls in Active Backup RF combining issues may affect installation planning Physical layout affects Redundancy grouping Redundancy and EAS Chapter 11 Using Stratum II Utility Overview Installation Minimum requirements PC Set up Initial Set Up Ethernet RS Setting Up Slave Units with the Utility Page VI Owner s Manual Stratum II Modulation System

9 TABLE OF CONTENTS 5. Firmware Update Via Ethernet Via Serial Port (RS232) System control Getting Started System Status User Channel Plan Channel Vs Channel Name Frame Status Module Interface Chapter 12 Customer Support Information If You Need Help Repair Procedure Claims Warranty Stratum II Modulation System Owner s Manual Page VII

10 TABLE OF CONTENTS THIS PAGE INTENTIONALLY BLANK Page VIII Owner s Manual Stratum II Modulation System

11 1. What Is The Stratum II Modulation System? Chapter 1 Introduction The Stratum II system is an extended bandwidth analog modulation system to provide up to 158 channels of NTSC television to cable customers. The bandwidth of 47 to 860 MHz or 50 to 1002 MHz in one unit provides for simple spares management and ultimate flexibility. The extended bandwidth range ensures minimal noise contribution to your broadband system for now and in future extensions. The system provides for BTSC stereo audio and secondary audio programs (SAP). The system may be co-located or dispersed through a cable headend or hub, yet operate as a system. The unit may be directly controlled by the operator at any front panel display in the system. Your input is made using front panel liquid crystal display (LCD) menus, knobs, and pushbuttons. Any NRF1000 Frame with the Display Panel can control any other Frame on the system when connected via the Ethernet ports. For complex installations, you may install Stratum II in sub-networks that share the same physical network cabling but act as independent systems. The Stratum II system will also communicate on a local area network (LAN) using IP protocol over Ethernet or form its own local network when wired together. When using shared LAN (Local Area Network), typically one Frame will act as a master and will be recognized by the LAN using IP addressing and the remainder will be on a sub-net, not visible to the LAN to facilitate fast redundancy communications between Frames. The remote control is provided by a SNMP (Simple Network Management Protocol) interface to a local network control software, sold and installed by third party software providers, that allows electronic duplication of the commands and queries available to you on the front panel. Mibs developed by Standard are available to be included in customer s network management software to control Standard products. See the following pages for a list of features. System and component block diagrams are shown in Chapter 9. Stratum II Modulation System Owner s Manual Page 1-1

12 2. Elements of a Stratum II System 2.1 NRF1000 Frame Introduction The NRF1000 Frame is the mechanical and electrical backbone of the system. In addition to providing power conversion and/or distribution to each of the eight slots, it provides control messages for each module. The eight slots are capable of use with any functional module, accepting a rear panel Interface card (RPI) with appropriate input/out connectors for that function. The Frame controller stores operating parameters and transfers them to backup modules internally or externally (when redundancy module is installed), then restores the operating parameters to a replacement module. The frame contains fans and airflow controls. The NRF1000 has three optional configurations: With or without internal AC to DC power converter. (When AC input is present, one DC power input is present. When AC power input is not present, Dual DC powering inputs are present.) With front panel display and controls (master) or with blank (slave) front panel. Systems using blank front panel frames require at least one with master display option in the system (2 masters minimum recommended). With or without RF combiner in frame rear area. 2.2 NAM1000 Modulator The NAM1000 modulator fits in one slot of the NRF1000. It is in two parts. The rear panel interface (RPI) card provide connectors to interface inputs and outputs appropriate to the modulator and to allow switching of input and IF signals to support redundancy. The NAM1000 s front section contains the active modulation elements. It may be hot-swapped, i.e., installed and removed without removing frame power. 2.3 NOP1000 Off Air Tuner The model NOP1000 is a down-converter/demodulator that receives off-air signals converting them to a Composite IF signal. A complete off air processor, will consists with the NOP1000 and an Upconverter. The Composite IF signal can be fed to the upconverter so to output the received channel to the cable channel. The NAM1000 or the NSM860 modulators can be configured as an upconverter. The NOP1000 is designed to replace the rear panel interface card when the respective slot is assigned as an off-air processor. The NAM1000 or NSM860 local oscillator is referenced off of the NOP1000 local oscillator ( frequency locked ) to reduce co-channel inference. Page 1-2 Owner s Manual Stratum II Modulation System

13 Introduction 2.4 NSE1000 Stereo Generator with optional SAP, AGC. The NSE1000 stereo generator fits in one slot of the NRF1000. It is in two parts. The rear interface card provides connectors to accept baseband audio for left, right and SAP channels and outputs for both wideband (100kHz) baseband and modulated 4.5 MHz subcarrier to be looped into an appropriate NAM1000. The rear interface card supports switching of input and output signals to support redundancy. A rear interface card option without redundancy switching has been defined as a cost management approach; contact your sales representative for further information. The NSE1000 s front section contains the active modulation elements. It may be installed and removed without removing frame power. The NSE1000 has four optional configurations: Rear interface card with or without redundancy switching. With or without subcarrier output of 4.5 MHz modulated signal. Output of 4.5 MHz subcarrier to the modulator is the recommended configuration for optimal stereo performance. With or without SAP processor. With or without four-channel audio automatic gain control processor (AGC). 2.5 NSM860 Stereo Modulator The NSM860 is an AM VSB modulator with the BTSC stereo encoder that fits in one slot of the NRF1000. It is in two parts. The rear panel interface (RPI) card provide connectors to interface inputs and outputs appropriate to the modulator and to allow switching of input and IF signals to support redundancy. The NAMSM860 s front section contains the active audio and video modulation, and the RF elements. It may be hot-swapped, i.e., installed and removed without removing frame power. The NSM860 has one optional configuration: With or without SAP processor. Initial product availability has all units with SAP. 2.6 NAM860 Modulator The NAM860 is the monaural version of the NSM860. It fits in one slot of the NRF1000. The rear panel interface (RPI) card provide connectors to interface inputs and outputs appropriate to the modulator and to allow switching of input and IF signals to support redundancy. This RPI is compatible with the NAM1000 RPI. The NAM860 s front section contains the active modulation elements. It may be hot-swapped, i.e., installed and removed without removing frame power. Stratum II Modulation System Owner s Manual Page 1-3

14 2.7 Blank front and rear panel covers Introduction The thermal management system of the Stratum II system assumes that the NRF1000 front panel and rear panel contains no open slots. You must block off all unused slots with a Blank Panel kit (PN AS ). The kit contains one blank front panel, one blank rear panel, Jumper PCA (AS ) and hardware. Please refer to Chapter 3 6 for installation. Page 1-4 Owner s Manual Stratum II Modulation System

15 Introduction 3. Equipment that Interfaces with Stratum II The Stratum II is intended to interconnect and operate with typical Cable headend equipment. Inputs are expected from off-air demodulators and both analog and digital satellite receivers that provide video and audio or composite video outputs. RF outputs from the Stratum II are expected to be input to combiners that provide input to launch amplifiers or fiber transport systems. Control systems are expected to be third-party provided SNMP managers that will handle each frame as an eight-function agent. See Chapter 3, section Who Should Use this Manual This manual is written for operators/users of the Standard Communication Corp Stratum II Modulation System. It describes unit functions and operation. The manual is written to assist in the installation and day-to-day care and operation. Maintenance information that requires the covers to be removed is not included. Remote control protocols are available from Standard in separate publications. 5. Summary of Features 5.1 The NRF1000 Frame and Controller The frame s 8 positions (module slots) are universal and can be configured for any functional module. Frame uses a passive mid-plane design for no failures in the basic frame communications buss. Mid-plane connectors are reliable Berg Metral self-aligning type and include Coax feed-through where high performance is needed. Frame mechanical design included positive alignment of functional modules for easy insertion. Frame provided positive locking of modules and easy lever type extraction. Extensive Redundancy Frame Controller stores duplicate information for each module. If Frame Control logic fails, each module continues to operate. If a module fails and is replaced, all configuration, level and other data is transferred to the replacement module and the module is restored to service when it signals correct operation. Within a single frame the mid-plane buss may be partitioned so that adja- cent modules may be grouped for redundancy. Most intense application is 8 modules in 1:1 pairs with 4 on-air, 4 as hot backup. Within frame, least intense is 8 on-air with no hot standby. PRIORITY REDUNDANCY SM allows user to list channel in priority order and Stratum II will drop lowest priority channel(s) in order to keep highest priority services on-air. Stratum II Modulation System Owner s Manual Page 1-5

16 Introduction Th e front of the chassis contains the lower-cost blank slave panel or optional Master front panel which has: 8 slots that accept Modulator or Stereo Encoder modules corresponding to the Interface Cards installed in the rear slots. Large LCD GUI (Graphical User Interface) for easy system operation. Eight buttons, corresponding to the eight slots of the frames, that quickly display the modules operating information such as Channel/Frequency, Levels, Alarms. Subsequent displays may be quickly accessed to give more detailed configuration options and status. Slider-type displays with numerical data yield easy to read and set levels for RF, video, and audio. Navigations buttons and a quick access knob can allow any Master to display status and set configuration of the modules in any other frame connected to that system via the Ethernet port. -48V DC input for main operation. The Main DC power input is used if the internal AC power supply is off/uninstalled or the AC power converter output is voltage is below limit (46V). The AUX DC power input is present when no AC converter is installed and will be used when the Main DC is below limit. Wide range AC input power supply (90-265VAC). When combiner option is installed, removal of a module self-terminates to isolate operating modules from impedance mis-matches. Seven fans provide large airflow for reliability. Fan speeds are thermally controlled to optimize front to rear air flow. Power supply heat isolated drift and aging effects. Fans filter accessible from front for easy maintenance. from functional modules to minimize thermal Use of subnets allows the same LAN cable to carry more than one system. Rear of the chassis contains: 8 slots that accept Interface cards for Modulators or Stereo Encoders. Power Supply Interface (AC input [optional] and DC input[s]). Communication Interface which contains the RS232 connector, Ethernet connector, Loop Thru for the 12MHz reference signal, Loop Thru for EAS signal, Frame ID setting switch, control input to force the EAS mode. External Redundancy Interface card (optional) to allow transfer of signals from one frame to another in a loop-though configuration. Contains the RF output interface that can be straight thru (8 outputs) or [optional] combined (one output) on 75 Ohm F-connectors. Page 1-6 Owner s Manual Stratum II Modulation System

17 Introduction 5.2 The NAM1000 Modulator Covers 47 to 1000 MHz in one unit. Low noise, low spurious through the entire MHz range to minimize interference with other analog or digital QAM signals. Modulator Rear Interface card contains: Video Input (75 ohms) Audio Input (balanced 600 ohms or 10k ohms, via internal switch) VIF Loop (75ohms) AIF Loop (75ohms) 4.5MHz-aural sub-carrier input (75 ohms) External CIF input (75ohms) IFCW output (75ohms) Two bicolor Status LED s identifying slots with alarms conditions when troubleshooting from the rear. SAW filter configurable for VIF or CIF to accommodate common scram High RF output level (61dBmV). Can accommodate STD, HRC, IRC freq. plans including FCC offset. RF muting during channel change or PLL unlock due to internal error. blers. IF AGC configurable for PEAK or SYNC/AVRG by internal switch. SYNC/AVRG controls CIF level at the sync tip of the modulating video signal or average level if video signal is missing or scrambled (missing sync pulses). 4.5MHz aural sub-carrier is selectable on front panel to internal (mono or wide band audio) or external NSE1000 or other BTSC Generator). Switch-able audio pre-emphasis to accommodate monaural or wide band BTSC audio signals from an external BTSC Generator. Front Panel 2 1/2 digit LED channel indicator. 3.5mm audio monitor stereo jack. BNC Video monitor on front panel (75ohms). F type RF monitor on front panel (-30dB, 75ohms). Alarm LED s indicate PLL unlocked, over modulation, missing low, over limit temperature. video, RF level Over modulation LED indicates the video clipping/over-modulation. Bicolor LED indicates audio level thru the green light intensity and aural over- modulation red. Back-up status LED identifies units selected as hot standby. Stratum II Modulation System Owner s Manual Page 1-7

18 Introduction 5.3 NOP1000 Off Air Tuner Input frequency range of 50 to 860MHz: VHF Low, VHF High (Hyper-band) and UHF. Fine tuning in 50 or 62.5 khz steps. Has the functionality of both analog multimedia end digital tuner. Rear Interface card contains: Back-up status LED identifies units selected as hot standby. Provides the audio and video demodulated signals that can be used for monitoring purposes. For additional flexibility the card accepts an external CIF input (selectable via NRF1000 GUI). The unit preserves the full redundancy capability including the control logic of the Modulator Redundancy card. The unit preserves the required EAS capability. Note: Due to the limited tuning step size the tuner can t compensate for the +/-10kHz offset some of the TV station are required by FCC to apply to the channel frequency. The offset will be carried over to the modulator s output frequency. The customer will have the option to apply an additional offset of -/+12.5kHz to the CATV offsets on the modulator output frequency to bring it within the allowed range of +/-5kHz as a compensation for the broadcast offset. In this case the benefit of the off-air phase lock will no longer be valid. Page 1-8 Owner s Manual Stratum II Modulation System

19 Introduction 5.4 NSE1000 Stereo Encoder Integrated DSP-based BTSC stereo encoder to support higher separations needed for ProLogic applications. Provides 4.5MHz FM modulated aural carrier or Baseband BTSC wide band audio. DSP-generated Secondary Audio Program (SAP) available as plug-in. AGC for four channels (Left, Right, SAP, Aux.) available as plug-in. Stereo Encoder Rear Interface Card contains connectors for: Audio inputs for Left, Right, Secondary Audio Program and AUX mono (balanced 600 ohms). Video Loop (75ohms) to synchronize BTSC to video. 4.5 MHz aural sub-carrier (75ohms) Baseband BTSC (balanced 600 ohms) Two bicolor Status LED s identifying slots with alarms conditions when troubleshooting from the rear. Aux audio input that may be selected by the grounding of the CTRL input (10k ohms). Aux input is processed through optional AGC module. Internally generated Test Tone for deviation adjustment using Bessel null technique. Front panel 3.5mm stereo audio monitor jack. Alarm LED indicates video PLL unlocked unlock due to internal error or misslevel thru the green light intensity and au- ing video input. Two bicolor LED s indicates audio ral over-modulation red. LED s for Mono, Stereo or Stereo + SAP mode of operation. LED indicating Test Tone active. Back-up status LED identifies units selected as hot standby. Stratum II Modulation System Owner s Manual Page 1-9

20 Introduction 5.5 The NSM860 Modulator Covers 47 to 860 MHz in one unit. Low noise, low spurious through the entire MHz range to minimize interference with other analog or digital QAM signals. Modulator Rear Interface card contains: Video Input (75 ohms) Audio inputs for Left, Right and Secondary Audio Program (balanced 600 ohms or 10k ohms, via internal switch) VIF Loop (75ohms) AIF Loop (75ohms) Selectable 4.5MHz-aural sub-carrier or IFCW output (75ohms) External CIF input (75ohms) Two bicolor Status LED s identifying slots with alarms conditions when troubleshooting from the rear. SAW filter configurable for VIF or CIF to accommodate common scram High RF output level (50-61dBmV, user adjustable). Can accommodate STD, HRC, IRC freq. plans including FCC offset. RF muting during channel change or PLL unlock due to internal error. blers. IF AGC configurable for PEAK or SYNC/AVRG by internal switch. SYNC/AVRG controls CIF level at the sync tip of the modulating video signal or average level if video signal is missing or scrambled (missing sync pulses). 4.5MHz aural sub-carrier Input is selectable on front panel to internal or external (use of the NSE1000 or external BTSC Generator). Front Panel 2 1/2 digit LED channel indicator. 3.5mm audio monitor stereo jack. BNC Video monitor on front panel (75ohms). F type RF monitor on front panel (-30dB, 75ohms). Alarm LED s indicate PLL unlocked, over modulation, missing video, RF level low, over limit temperature. Bicolor LED indicates audio modulation red. Back-up status LED identifies units selected as hot standby. Over modulation LED indicates the video clipping/over-modulation. 5.6 The NAM860 Modulator Covers 47 to 860 MHz in one unit. level thru the green light intensity and aural over- Page 1-10 Owner s Manual Stratum II Modulation System

21 Introduction Lo w noise, low spurious through the entire MHz range to minimize in- with other analog or digital QAM signals. terference Modulator Rear Interface card contains: Video Input (75 ohms) Audio Input (balanced 600 ohms or 10k ohms, via internal switch) VIF Loop (75ohms) AIF Loop (75ohms) Selectable 4.5MHz-aural sub-carrier or IFCW output (75ohms) External CIF input (75ohms) Two bicolor Status LED s identifying slots with alarms conditions when troubleshooting from the rear. SAW filter configurable for VIF or CIF to accommodate common scramblers. High RF output level (50-61dBmV, user adjustable). Can accommodate STD, HRC, IRC freq. plans including FCC offset. RF muting during channel change or PLL unlock due to internal error. IF AGC configurable for PEAK or SYNC/AVRG by internal switch. SYNC/AVRG controls CIF level at the sync tip of the modulating video signal or average level if video signal is missing or scrambled (missing sync pulses). 4.5MHz aural sub-carrier Input is selectable on front panel to internal or external (use of the NSE1000 or external BTSC Generator). Front Panel 2 1/2 digit LED channel indicator. 3.5mm audio monitor jack. BNC Video monitor on front panel (75ohms). F type RF monitor on front panel (-30dB, 75ohms). Alarm LED s indicate PLL unlocked, over modulation, missing video, RF level low, over limit temperature. Over modulation LED indicates the video clipping/over-modulation. Bicolor LED indicates audio level thru the green light intensity and aural overmodulation red. Back-up status LED identifies units selected as hot standby. Stratum II Modulation System Owner s Manual Page 1-11

22 6. Control Modes 6.1 General Introduction This equipment is designed for unattended operation. Once set up, it requires no further attention, except periodic maintenance of the fan grill. To set up the equipment or to change operation, there are two control modes associated with the Stratum II modulation system. 6.2 Local (Front Panel) Control Front Panel Control mode allows parameters to be entered and chosen by the operator manually using the pushbuttons and knob. See the following chapters for a complete explanation of front panel operations for the Frame, the modulator, and the stereo generator. 6.3 Remote Control (Ethernet Port on Rear Panel) Each NRF1000 frame includes Ethernet connectors (RJ45) that allow the frames to be connected together. In all cases the Ethernet wiring needs to be connected via a hub or switch. This may be done on a separate hard-wired loop using twisted pair and/or CAT5 grade wiring dedicated to Stratum II frame interconnection. When an existing LAN is available, each frame may be connected via these hubs or switches. The user must enter the IP address via front panel. Refer to Chapter 4 7. The individual modules (modulators and stereo generators) are address via an IP address to their frame. Communication is via SNMP protocols SNM P The Stratum II comes enabled with Simple Network Management Protocol (SNMP), version 2c. When using a qualified SNMP network element manager program (third party software) with the SCC private MIB, the third party software will be able to control the system in the same way as if the control was coming from the graphical user interface. This includes controlling each module that is installed, along with the ability to setup all redundancy settings, whether they are internal or external to the unit. Steps required to enable SNMP operation on a specific chassis are as follows: Connect a 10BaseT Ethernet cable to the Ethernet Port on the rear of the chassis. Power the chassis on. Configure the Network Interface by setting the IP address, subnet address, and gateway address via the GUI. The Stratum II will support the applicable sections under the public area of mib-2 (located under the mgmt section), which are: system ( ) interfaces ( ) udp ( ) snmp ( ) Page 1-12 Owner s Manual Stratum II Modulation System

23 Introduction Stratum II also supports its private MIB, named stratumiimib, which is located at The private MIB will allow users to manage any Stratum II from a qualified SNMP manager. For interested parties, the Stratum II private MIB is available upon request. There are 2 private MIB files that are required for an SNMP manager to be able to control the Stratum II. The first MIB is the global definition for all Standard Communications products. The second MIB is the specific Stratum II MIB, named stratumiimib, which resides under the global definition. Stratum II Modulation System Owner s Manual Page 1-13

24 Introduction THIS PAGE INTENTIONALLY BLANK Page 1-14 Owner s Manual Stratum II Modulation System

25 Chapter 2 Specifications 1. NAM RF Output SPECIFICATION Output Frequency, in one unit Output Level (each unit) RF Test Port A/V Ratio C/N In channel C/N (out of band) C/N (combined channels) Spurious (2nd/3rd order, RF-IF) Phase Noise (20kHz) Frequency Accuracy Return Loss RF Mute Freq Plans Frequency Response, (Flatness in channel = FCC regulation) LIMITS 54 ~ 1002MHz 50 ~ 61dBmV, single channel output 35 ~ 45dBmV, optional 8:1 combiner -30 ± 1.5dB of single channel output -9 to -21dBc 68dBc (4MHz) 75dB, 50MHz ~ 940MHz 73dB, 940MHz ~ 1000MHz 60dB (120 channels) 61dB, 50MHz ~1002MHz 60dB, 0 ~ 50MHz -103dBc at 20KHz -97dBc at 10KHz -70dBc at 1KHz 2.5KHz 14dB -65dB EIA, HRC, IRC, Custom option possible ± 0.5dB, 0.5 to 4.5MHz Stratum II Modulation System Owner s Manual Page 2-1

26 Specifications 1.2 IF Input And Output SPECIFICATION VIF Output Level AIF Output Level CIF Output Level (option) VIF Output Return Loss AIF Output Return Loss CIF Output Return Loss VIF Input Level AIF Input Level CIF Input Level (Aux CIF In) VIF Input Return Loss AIF Input Return Loss CIF Input Return Loss IFCW Output IFCW Output Return Loss LIMITS 40 ± 2dBmV 25dBmV 35dBmV (uses CIF Input port) 14dB 14dB 14dB 40 ± 5dBmV 25dBmV 40dBmV (on each module) 14dB 14dB 14dB 53 ± 3dBmV 14dB 1.3 Video SPECIFICATION Video Format Input Level Video Input Impedance Video Input Return Loss Video Test Port Output (in Service Mode) / Input (Test Mode) Frequency Response LIMITS (single channel) NTSC per NTC7 0.5 to 1.5 V p-p 75 Ω > 30dB 0.5 to 1.5 V p-p (75 ohms) <1.5dB, 0.1MHz to 4.2MHz (More importantly, see RF Flatness spec) CH28 RF Out IF Output < -60dB < -60dB Signal to Noise (Lum. Weighted) Differential Gain 3% 1.5% Differential Phase 2 degrees 1.0 degrees Chroma/Luminance Gain ± 9 IRE ± 2 IRE Chroma/Luminance Delay ± 75 ns ± 50 ns ICPM 3 degree p-p 1 degree p-p K-Factor 2T pulse 4 % 2 % Page 2-2 Owner s Manual Stratum II Modulation System

27 Specifications 1.4 Audio Baseband / 4.5MHz Subcarrier SPECIFICATION LIMITS (single channel) Audio Input Impedance 600Ω (default) or 10KΩ Balanced Audio Baseband Input 50 ~ 15KHz (Mono) or BTSC Baseband Input level +10 to 10dBm at 600Ω 4.5MHz Input Impedance 75Ω 4.5MHz Input Return Loss 20dB 4.5MHz Input Level 30 ~ 45dBmV Composite 4.5 Input 20 ~ 46dBmV Test Port Output Impedance 300Ω Test port Output Level 0dBV Total Harmonic Distortion < 0.5 %, 50Hz ~ 15KHz (Mono) Frequency Response ± 0.5dB, 50Hz ~ 15KHz (Mono) 1.5 Connectors / Monitors SPECIFICATION Video Input 4.5MHz Subcarrier Input VIF Output AIF Output VIF Input AIF Input EXT CIF Input IF CW Output Audio baseband Input BNC Female BNC Female F Female F Female F Female F Female F Female F Female 3 pin, Quick connect terminal 1.6 Alarms / Monitors SPECIFICATION Module Temperature 74 ~ 81 C Alarm Indicator ON > 84 C System shuts down unit RF and IF PLL Unlock - RF Output Level Low < 43dBmV Video Over Modulation Indicator 90 ± 1% (RED) Video Over Mod Alarm Threshold 3 sec (User settable - TBD) Audio Deviation Indicator (RED) 0 + 1dBm Audio Deviation Alarm Threshold 3sec (User settable - TBD) Alarm LED RED Stratum II Modulation System Owner s Manual Page 2-3

28 Specifications 2. NOP Performance SPECIFICATION LIMITS Frequency Range 50 ~ 860 MHz Nominal input level 0 dbmv Voltage gain Ch. 02 to db AGC range 35 db IF Output Level (@ slot connector) < +/- 2.5 dbmv IF Output Return Loss (@ slot connector) > 14 Output C/N Inband (4MHz BW), 47 ~940MHz Video carrier+ 4.5MHz in channel 940 ~ 1000MHz Spurious Output Level, Fixed Others Freq. VHF Low VHF offset UHF VHF Low Phase Noise VHF offset UHF VHF Low VHF offset UHF RF Frequency Accuracy Flatness within a 6MHz channel from center Isolation (RF to IF (fwd/rev)) RF Test Point Output RF Output RF Mute > 68 dbc < -65 dbc -60 dbc/hz -55 dbc/hz -55 dbc/hz -80 dbc/hz -80 dbc/hz -80 dbc/hz -100 dbc/hz -100 dbc/hz -100 dbc/hz < +/- 2.5 khz < +/- 2.5 dbp-p > 70 db -30 +/- 1 db < -65 db Page 2-4 Owner s Manual Stratum II Modulation System

29 Specifications 3. NSE MHz, VIDEO And BTSC BASEBAND SPECIFICATION LIMITS Video Input 0.5 to 1.5 V p-p Video Loop Output Gain/Loss ± 3IRE Video Input Impedance 75Ω Video Input return Loss > 30dB 4.5MHz Output Level 35 ± 2dBmV 4.5MHz Output Impedance 75Ω 4.5MHz Output Return Loss > 20dB Composite Video Output Selectable. Output at Video Out Connector BTSC Baseband Output +3dBV BTSC Baseband Output Impedance 600Ω balanced 3.2 Audio SPECIFICATION Input Impedance Audio Baseband Input Input Level Frequency Response Harmonic Distortion, 50-15kHz S/N ratio Stereo Separation LIMITS 600Ω (default) or 10KΩ Balanced 50 ~ 15KHz +10 to 10dBm ± 0.5 db, 50 ~ 14.5kHz < 0.5%, 50 ~ 14.5kHz - 60dB > 30 db. 50 Hz-14.5 khz 3.3 Connectors SPECIFICATION Video Input/Output 4.5MHz Subcarrier Output Audio Left, Right, SAP & Aux BTSC baseband Output Aux Input Control BNC Female BNC Female 12 pin, Quick connect terminal 3 pin, Quick connect terminal 3 pin, Quick connect terminal 3.4 Alarms / Monitors SPECIFICATION Video Phase Lock - Audio Deviation Indicators 0 + 1dBm (RED) Audio Deviation Alarm Threshold 3sec (User settable - TBD) Alarm LED RED Stratum II Modulation System Owner s Manual Page 2-5

30 Specifications 4. NSM860 and NAM RF Output SPECIFICATION Output Frequency, in one unit Output Level (each unit) RF Test Port A/V Ratio C/N In channel C/N (out of band) C/N (combined channels) Spurious (2nd/3rd order, RF-IF) Phase Noise (20kHz) Frequency Accuracy Return Loss RF Mute Freq Plans Frequency Response, (Flatness in channel = FCC regulation) LIMITS 54 ~ 860MHz 50 ~ 61dBmV, single channel output 35 ~ 45dBmV, optional 8:1 combiner -30 ± 1dB of single channel output -8 to -21dBc 68dBc (4MHz) 71.5dBc, 50MHz ~ 860MHz 60dB (135 channels) 61dB, 50MHz ~860MHz 60dB, 0 ~ 50MHz -90dBc at 20KHz -83dBc at 10KHz 2.5KHz 14dB -65dB EIA, HRC, IRC, Custom option possible ± 0.5dB, 0.5 to 4.5MHz Page 2-6 Owner s Manual Stratum II Modulation System

31 Specifications 4.2 IF Input And Output SPECIFICATION VIF Output Level AIF Output Level CIF Output Level (option) VIF Output Return Loss AIF Output Return Loss CIF Output Return Loss VIF Input Level AIF Input Level CIF Input Level (Aux CIF In) VIF Input Return Loss AIF Input Return Loss CIF Input Return Loss IFCW Output IFCW Output Return Loss LIMITS 40 ± 1dBmV 25dBmV 35dBmV (uses CIF Input port) 14dB 14dB 14dB 40 ± 5dBmV 25dBmV 40dBmV (on each module) 14dB 14dB 14dB 53 ± 3dBmV 14dB 4.3 Video SPECIFICATION Video Format Input Level Video Input Impedance Video Input Return Loss Frequency Response LIMITS (single channel) NTSC per NTC7 0.5 to 1.5 V p-p 75 Ω > 30dB ± 1.0dB, 0.1MHz to 4.2MHz (More importantly, see RF Flatness spec) CH28 RF Out IF Output < -60dB < -60dB Signal to Noise (Lum. Weighted) Differential Gain 3% 1.5% Differential Phase 2 degrees 1.0 degrees Chroma/Luminance Gain ± 9 IRE ± 2 IRE Chroma/Luminance Delay ± 75 ns ± 50 ns ICPM 3 degree p-p 1 degree p-p K-Factor 2T pulse 4 % 2 % Stratum II Modulation System Owner s Manual Page 2-7

32 4.4 Audio Baseband / 4.5MHz Subcarrier SPECIFICATION LIMITS (single channel) Audio Input Impedance 600Ω (default) or 10KΩ Balanced Audio Baseband Input 50 ~ 15KHz (Left, Right and SAP) Input level +10 to 10dBm at 600Ω 4.5MHz Input Impedance 75Ω 4.5MHz Input Return Loss 20dB 4.5MHz Input Level 30 ~ 45dBmV Composite 4.5 Input 20 ~ 46dBmV Test Port Output Impedance 300Ω Test port Output Level 0dBV NSM860 Stereo Channel Frequency Response ± 0.5 db, 50 ~ 14.5kHz Harmonic Distortion, 50-15kHz < 0.5%, 50 ~ 14.5kHz S/N ratio - 60dB Stereo Separation > 30 db. 50 Hz-14.5 khz NSM860 SAP Channel Total Harmonic Distortion < 1%, 50Hz ~ 15KHz (Mono) Frequency Response ± 1dB, 50Hz ~ 15KHz (Mono) S/N ratio - 60dB NAM860 Mono Frequency Response ± 0.5 db, 50 ~ 14.5kHz Harmonic Distortion, 50-15kHz < 0.5%, 50 ~ 14.5kHz S/N ratio - 60dB 4.5 Connectors / Monitors Specifications SPECIFICATION Video Input 4.5MHz Subcarrier Input VIF Output AIF Output VIF Input AIF Input EXT CIF Input IF CW/4.5MHz Output Audio baseband Input (NSM860) Audio baseband Input (NAM860) BNC Female BNC Female F Female F Female F Female F Female F Female F Female 8 pin, Quick connect terminal 3 pin, Quick connect terminal Page 2-8 Owner s Manual Stratum II Modulation System

33 Specifications 4.6 Alarms / Monitors SPECIFICATION RF and IF PLL Unlock - RF Output Level Low < 43dBmV Video Over Modulation Indicator 90 ± 1% (RED) Video Over Mod Alarm Threshold 3 sec (User settable) Audio Deviation Indicator (RED) 0 + 1dBm Audio Deviation Alarm Threshold 3 sec (User settable) Alarm LED RED 4.7 Power SPECIFICATION Input Voltage Input Range Current RF Mute Off (normal operation) RF Mute ON LIMITS -48Vdc Nominal -40Vdc Minimum / -60Vdc Maximum 550mA 480mA Stratum II Modulation System Owner s Manual Page 2-9

34 Specifications 5. NRF Redundancy Loop SPECIFICATION VIF Input/Output Level (75Ω term) Loop Thru Gain/Loss Loop Impedance Input/Output Return Loss AIF Input/Output Level (75Ω term) Loop Thru Gain/Loss Loop Impedance (Thru mode) Input/Output Return Loss IFCW Input/Output Level (75Ω term) Loop Thru Gain/Loss Loop Impedance (Thru mode) Input/Output Return Loss Video Input/Output (75Ω term) Loop Thru Gain/Loss Loop Impedance (Thru mode) Input return Loss 4.5MHz Input/Output (75Ω term) Loop Thru Gain/Loss Loop Impedance Input return Loss Audio (Left, Right, SAP, Aux and BTSC) Input/Output (600Ω term) Loop Thru Gain/Loss Loop Impedance (Thru mode) LIMITS 40dBmV < 0.1dB > 10KΩ 14dB 25dBmV < 0.1dB > 10KΩ 14dB 53dBmV < 0.1dB > 10KΩ 14dB 0.5 to 1.5 V p-p < 0.5IRE > 10KΩ > 30dB 0.5 to 1.5 V p-p < 0.1dB > 10KΩ > 20dB +10 to 10dBm < 0.1dB > 10KΩ Page 2-10 Owner s Manual Stratum II Modulation System

35 Specifications 5.2 RF Output Interface SPECIFICATION Standard Configuration Output Return Loss Thru Loss Optional 1 Output Auto input termination Combined Output Return Loss Combiner Loss FUNCTION/LIMITS Eight RF F-connectors 20dB < 0.5dB 8 to 1 combiner (PN AS ) 4 to 1 combiner (PN AS ) Yes 16dB 14 ± 1dB The combiner version can be modified to have any of the 8 ports output directly to the slot port (not combined). An example can be, slots 1 thru 7 are combined and is directed to the RF output combined port. Slot 8 can output the RF signal onto the F connector marked slot EAS, Remote, Reference SPECIFICATION Internal Reference Frequency Frequency Stability Frequency Accuracy External Reference Input Frequency Input Range Input Return Loss Emergency Alert System (EAS) Input Level Loop Loss Input Return Loss (75Ω terminated at the loop) Remote Control Remote Address EAS Trigger Summary Alarm Relay Voltage Current RS232 LIMITS 12.0 MHz 3 ppm 5 ppm 12.0/ MHz.@ 0dBm -3 ~ 6dBm 20dB 40dBmV Composite IF < 0.5dB 20dB 10BT (Ethernet) 2 x Hex rotary switch Logic 0 or GND ~ 1Vdc Dry contact (Com, NO and NC) 250Vdc Maximum 1A Maximum Upload/Debugging Port Stratum II Modulation System Owner s Manual Page 2-11

36 Specifications 5.4 Power Panel SPECIFICATION AC Input Voltage Current Fuse type DC Input Voltage Input range Current Fuse type External to Internal DC Switching Voltage 1 Internal to External DC Switching Voltage Connector Table NRF1000 FRAME RF Outputs IF Inputs and Outputs Video Inputs and Outputs Audio Inputs and Outputs External Reference IN/OUT EAS IN/OUT Remote Control LIMITS 90 ~ 240 VAC 2.5A Maximum 3.15A/ 250V Time Lag -48Vdc -40 ~ -60Vdc (Modules shuts down if voltage is out of range) 6A Maximum Miniature fuse, quick acting 10A/125V (SCHURTER PN ) Internal Voltage recovers to - 46Vdc Internal Voltage drops to - 44Vdc CONNECTOR F Female F Female BNC Female 15pin, Quick connect terminal F Female F Female RJ45 1 Applies only to NRF1000 with AC input or internal power supply. Page 2-12 Owner s Manual Stratum II Modulation System

37 Specifications 6. General SPECIFICATION LIMITS Dimensions (H x W x D) 7in x 19in x 25in Weight, Frame Only (AC/DC 31lbs version) Weight, Frame Filled with 8 60lbs (NAM1000 modules) Operating Temperature Range 32 to 104 F (0 to +40 C) Operating Humidity Range 0 to 90 % Operating Altitude Range 0 to ft Power Requirements, DC -40 to -60 VDC Power Requirements, AC Converter 90 to 240 VAC, 50 ~ 60Hz, Power Consumption AC 270 VA DC -48Vdc (8 NAM ) -48Vdc (8 NSE ) Power Supply Type Switching, Auto ranging, DC Fan cooled Fuse 3.15TAmp, 250V Spare fuse in IEC320 socket Stratum II Modulation System Owner s Manual Page 2-13

38 Specifications THIS PAGE INTENTIONALLY BLANK Page 2-14 Owner s Manual Stratum II Modulation System

39 1. Planning The Installation Chapter 3 Installation Whether you are installing a single frame, a system of multiple frame collocated in one rack, a system distributed through the headend or multiple systems in one facility, you will benefit from planning the installation. CAUTION: FAILURE TO PLAN YOUR PHYSICAL LAYOUT FOR THE REDUDANCY REQUIREMENTS WILL, IN ALL PROBABILITY, FORCE RE-INSTALLATION OF REAR INTERFACE CARDS AND RE-WIRING OF YOUR PLANT. PLEASE READ THE FOLLOWING NOTES AND REVIEW THE CHAPTER ON REDUNDANCY BEFORE PROCEEDING. The simplest installation is the single frame, but you still need to plan the location of the modulators and stereo generators and the channel numbers for the modulator locations, which may be influenced by the wiring considerations of your site. For systems that implement redundancy, several choices must be planned, even if the back-up scheme is completely within each frame. Once connected, the signals are managed within the frame and between the frames by Stratum II, but the physical layout of the modulators and stereo generators may affect the ability to route the signals. Stratum II has the ability to specify the priority of the channel. The lowest rank is a backup unit, waiting as a hot standby for a module failure, or you can have the lowest priority channel dropped when a failure occurs, and the next lowest priority dropped if an additional unit fails, until, in the most unlikely of events, only the highest priority channel is still on air. Please plan to use blank panels on the front and rear of all unused slots in any frame. The thermal management system of the Stratum II assumes that the front panel and rear panel contains no open slots. 2. Unpacking The Unit Please inspect the cartons on receipt and note damage to the carton and inspect for possible unit damage. If damage is found, please contact shipper immediately, before unpacking, to follow that shipper s procedure for claims. Please open the carton and unpack carefully. Locate items such as the owner s manual on CD ROM, power cord, and the audio/alarms Quick Disconnect (male) terminals. Use caution in unpacking the heavy NRF1000. To unpack, open top and fold flaps out of the way, then gently rotate the box onto its top. Lift carton off and save packing materials for return, if needed. We suggest lifting and installation into the rack using mechanical lift or two persons to hold and stabilize the frame. Stratum II Modulation System Owner s Manual Page 3-1

40 3. Before Mounting The Frames Installation In some cases, the frame may be shipped pre-configured with your options installed and/or with rear panel interface cards installed for your specific channel plan. In that case, you may skip this section. 3.1 Set Internal Switches The only internal switches that you need to set before assembly and wiring are the audio input impedance switches. The rear interface cards have audio input impedance defaulted to the 600 ohm setting but may be set to the high impedance position. On the NAM1000 Rear Interface Card, you will observe one switch for the mono audio input. For 600 ohm input impedance, set the switch in the position closest to the rear panel (leftmost, as you look at the switch). On the NSE1000 Rear Interface Card, you will observe four switches. Looking down at the switches with the metal rear plate on the left side and the switches near the top of the Card, they are Left input on top, Right, SAP, and Auxiliary audio input on the bottom. For 600 ohm input impedance, set the switch in the position closest to the rear panel (leftmost, as you look at the switch). Refer to Chapter 8 3, for the NSM860 Refer to Chapter 9 3, for the NAM Install Cards in the Rear of the Frame 4. Positioning Although the rear of the chassis and all fastener locations remain accessible after mounting in the rack, it may be simpler to install the redundancy loop-through card, communications panels and the rear interface cards before mounting the frame. If you have restricted space in the rack or existing cabling may restrict access, it is recommended to install rear panel elements on a technician bench using ESP sensitive procedures. You may also set the rear panel address switches at this time to begin to identify the frames in a multiple frame system. It is easy to note the switch setting when installing the rear panel interface card in their appropriate slots as you follow the channel layout plan as described above. The frames are designed to be mounted without air gap between frames. Allow for free air flow in front and behind the NRF1000 Frame for cooling purposes. Additional air flow is from vents on the left side (facing the frame) to the rear. Never install equipment in such a way that the air outlet from another equipment exhausts hot air on the front of the rack under Stratum II or onto the left side of the Stratum II frame. The Stratum II Frame includes a temperature sensor that can trigger alarms if it is over-temperature. This is intended to allow you to observe a failure on the Stratum II cooling or in the environmental control, if it occurs, and not a suggested limit for temperature operation. Long-term reliability is best obtained with consistently cool environments. Page 3-2 Owner s Manual Stratum II Modulation System

41 Installation To prolong service life, pay special attention that the environment in which the unit is being used is free of dust and other airborne particles. Clean the fan filter in the front of the NRF1000 Frame periodically based on local dust conditions. Some General rules: Make sure the unit is operated in a temperature-controlled environment. Never place a unit near a heat source. Do not install a unit in areas of high humidity or where there is any danger of water or condensate dripping into or on the unit. ALWAYS INSTALL BLANK FRONT PANELS and REAR PANELS TO FORCE PROPER AIR FLOW when all slots in the frames are not in use. 5. Mounting The Frames The unit is designed for installation in an EIA standard 19-inch (480 mm) equipment rack. When mounting it in the rack, use pan or round head screws and washers in all four front panel mounting locations. This ensures a secure mount for the size and weight of the unit. You must supply screws matching your rack. Due to the weight of the frame and modules, it is necessary to support the rear of the frame using brackets supplied, before installing the cabling or inserting modules. Stratum II Modulation System Owner s Manual Page 3-3

42 6. Jumper PCA (AS ) and Rear Panel Cover The bus jumper card (AS ) must be installed in the empty rear panel slots for EAS to properly work. This card is included with the blank panel kit, AS Instruction: Installation Align and plug the card to the 96-pin connector; this is the connector on the upper side of the backplane. Install the blank rear panel using the 3mm x 6mm screws provided. Figure 3-1. Bus jumper and blank rear panel installation Page 3-4 Owner s Manual Stratum II Modulation System

43 Installation 7. Connectors Inputs to and outputs from the unit are connected via the rear panel. The following figures show the Stratum II rear panel. VIF I N VIDEO IN ALM RLY/ EAS TRIG NO NC VIF OUT SIG GND 8 EAS OUT AIF IN VIDEO OUT F 8 EAS IN IFCW IN AIF OUT 4.5 MHz IN 1 0 F 12 MHz OUT RS 232 CIF IN IFCW OUT 4.5 MHz OUT 12 MHz IN CIF OUT NRF COMMS IN AUDIO LOOP THRU L GND L R GND R S GND S A GND A OUT 10A MAX (-) ~ V 3A 50/60Hz 250V / T3.15A CAUTION: For continued protection against the risk of fire replace fuse only with same type and rating. Figure 3-2. AC/DC version of a Stratum II NRF Rear Panel. Note that alarm relay is Form C and may be wired for Normally Open (NO) or Normally Closed (NC) applications. Stratum II Modulation System Owner s Manual Page 3-5

44 Installation VIF I N VIDEO IN ALM RLY/ EAS TRIG NO NC VIF OUT SIG GND 8 EAS OUT AIF IN VIDEO OUT F 8 EAS IN IFCW IN AIF OUT 4.5 MHz IN 1 0 F 12 MHz OUT RS 232 CIF IN IFCW OUT 4.5 MHz OUT 12 MHz IN CIF OUT NRF COMMS IN AUDIO LOOP THRU L GND L R GND R S GND S A GND A OUT AUX/BU (-) CAUTION: For continued protection against the risk of fire replace fuse only with same type and rating. MAIN (-) Figure 3-3. DC version of a Stratum II NRF Rear Panel. Refer to Chapter Page 3-6 Owner s Manual Stratum II Modulation System

45 Installation SUM Figure 3-4. There are 3 types of RF Output Interface Panel, 8-outputs, an 8 to 1 Combiner and 4 to 1 Combiner. In the 8-output version, the 9 th connector is not functional. For the combiner version, connectors 1 thru 8 are not functional unless otherwise modified. Refer to Chapter for more information. Figure 3-5. Stratum II NAM1000- Rear Panel. Stratum II Modulation System Owner s Manual Page 3-7

46 Installation BU ALM CIF IN ANT IN Figure 3-6. NOP1000 Rear Panel Interface. Page 3-8 Owner s Manual Stratum II Modulation System

47 Installation Figure 3-7. Stratum II NSE1000 Rear Panel Stratum II Modulation System Owner s Manual Page 3-9

48 Installation VIDEO IN STATUS BU ALM VIF OUT 4.5 MHz IN AIF OUT VIF IN L + L - GND R + R - GND SAP+ SAP- CIF IN AIF IN IFCW / 4.5 OUT AS Interface without local commercial insert in the SAP audio. AS Interface with local commercial insert in the SAP audio. Figure 3-8. NSM860 rear panel interface. See Chapter 2, Specification Table of Connectors Page 3-10 Owner s Manual Stratum II Modulation System

49 Installation IN Figure 3-9. NAM860 rear panel. See Chapter 2, Specification Table of Connectors Stratum II Modulation System Owner s Manual Page 3-11

50 8. Connecting The Stratum II To Your Equipment Installation No special considerations exist for connecting the Stratum II to common cable headend signals sources or combiners, launch amps and similar. It is recommended that F-connectors be tightened snugly but not aggressively. Due to closeness of connectors on the system, it is recommended to use commonly available split socket drivers. Install IF loops on the rear interface cards if scramblers are not to be used with that channel. Consult your scrambler operation manual for cabling details, where used. It is not recommended to apply power to the frame until the frame to frame wiring is completed. The Stratum II system will power up and investigate its environment, discovering other frames in the system and their configuration. You may install the active modules via the front panel at this time, per the channel plan, taking care to match the NAM modulator active modules with the installed NAM-type rear panel card and the stereo generator active modules with the NSE-type rear panel cards. (If you incorrectly install an active module, no damage will be done. If a NAM100 or NSM860 is placed in a slot with a NSE1000 rear card, the unit fails to operate. If you place a NAM1000 in a slot with a NSM860 rear card,, or vice versa, it will operate but only use the left/mono audio input ) You may apply power to the frame to install one active module at a time and check cabling as you proceed 9. Interconnecting Frames 9.1 Frame to Frame Communications The Stratum II system communications between frames using 10BaseT Ethernet that requires a unique IP address in each frame. The last three decimal digits of each frame s address are selected via the 2 rear panel rotary hexadecimal switches. It is recommended to plan the addresses before installation, convert decimal to hex, and set the switches before the frame is mounted in the rack and cabling is attached. Do not forget to set the frame address on the rear communication panel to a unique number as you add frames. Inter-frame communication for redundancy will not function without setting a unique address in each frame. The first 9 decimal digits of the IP address are entered on the Master frame s front panel. The master will communicate these digits to the slave (blank front panel) frames on power up, who will combine them with the last three digital from the rotary selector switches on their rear panel. If you are not sharing a local network and Stratum II is totally isolated, you may select any 9 digits and any (unique) settings for the rear panel. If you are on a LAN, the IP addresses will be part of your LAN so consult your network manager regarding address assignment. IP Addresses: (example) Number input into Master s Front panel Number from rear panel selector switches Page 3-12 Owner s Manual Stratum II Modulation System

51 Installation Interconnect with CAT-5 or equivalent cabling from each frame s RJ-45 connector to LAN switches, router, or hubs. We strongly recommend that a switch dedicated to the Stratum II system (and a PC using the Stratum Utility if used) be used to isolate the system and minimize delays due to Ethernet collisions on a general LAN hub or switch. A crossover cable may directly interconnect the two frames in a 2-frame system, or connect the PC to a single frame system without using a hub or switch. The following section will show some basic ways the user can connect Stratum II frames to each other. Connect schemes are not limited to these types of connections. Multiple Master frames can be located in the same network. As a minimum, each network or subnet must have at least one master frame. Two Masters are the recommended minimum. If the network only had slaves connected, the user is able to use the Stratum II utility software to set up the IP addresses for those slaves and communicate with the slaves Stand Alone Network Figure 3-10 shows what a stand along network may look like. In this type of network, there can be multiple Stratum II frames. If slave frames are to be used, there should be at least one or two master frame(s). Figure Stand-alone network Stratum II Modulation System Owner s Manual Page 3-13

52 Installation Network with PC Connection Figure 3-11 shows a Stratum II network with a local PC attached to the network. The PC can either have utility software or SNMP manager software to control the frames. In the case that the utility software allows the set up of slave frames, there will be no need for any masters. So, this network can have all slaves, all masters, or any combination. Figure Network with a PC. Page 3-14 Owner s Manual Stratum II Modulation System

53 Installation Multiple Subnet Connections This section will show another basic connection just in case the user has multiple subnets to work with. Figure 3-12 shows a basic connection for the Stratum II network, using routers to divide the subnets. Figure Multiple subnet. Stratum II Modulation System Owner s Manual Page 3-15

54 9.2 Redundancy signal interconnection Frame to frame interconnection is only necessary when the backup unit is located in a separate frame relative to the units actively in service. Installation Otherwise, you must install cabling to daisy chain Video in/out, 4.5 MHz in/out, VIF in/out, AIF in/out and CIF in/out. Terminate the Video In of the first frame in the daisy chain and connect the Video out to the next frame, and repeat until all frames are on the loop. Terminate the Video Out of the last frame for best results. Order (versus the frame address) is not important. Repeat for all other signals on the Redundancy Loop-Through Card, including baseband audio. Shown in Figure 3-13 is an example of a connection between 3 subracks. The system is configured to have all active channels in service are backed up by slot 8 of subrack 3. This is a 23:1 ratio. Subrack 1 has a faulty unit, Subrack 2 has no fault and subrack 3 is in backup active mode. In this example, the program signals (video and audio baseband) are routed to the backup unit. The modulated IF signals (VIF and AIF) are rerouted to the faulty unit to keep the connectivity to the IF scrambling unit. The CIF is then routed back to the backup unit. 9.3 Connecting EAS The NRF1000 uses a composite IF signal as the EAS signal. It is applied to the EAS IN connector. Distributing signal the between the subracks is to daisy chain the composite IF signal from one subrack to the next. Please refer to Figure The EAS signal is distributed to all the slots by grounding the EAS control pin (SIG). This pin can be remotely controlled by an external device with a dry contact closure. 9.4 Locking to common reference You may lock the modulators in all frames together by connecting the 12 MHz In/Out connector on a daisy chain. Depending on the cable losses you can daisy chain up to 10 NRF1000. Terminate the last frame s 12 MHz Out connector for best performance. Please refer to Figure You may either input a reference 12 MHz or MHz signal from a reference source such as the RefGen12 from Standard or terminate the input of the first unit in the daisy chain. When terminated, that frame's internal reference will be used by all other frames in the system. No user setup is required; when the frame detects a 12/ MHz input, it will automatically use that reference until it is no longer present. 10. Applying Power When the optional AC/DC power supply is installed, the Stratum II system can be powered with external DC or AC power. Refer to Chapter for powering requirements. When DC input power is not present, the switching is not attempted and converted AC power is used until it is no longer able to support operation. Refer to Chapter for fuse rating. Page 3-16 Owner s Manual Stratum II Modulation System

55 Installation Subrack 1 VIF IN VIDEO IN VIF OUT AIF IN VIDEO OUT AIF OUT IFCW IN 4.5 MHz IN Subrack 2 CIF IN VIF IN AIF IN IFCW IN CIF IN IN IFCW OUT CIF OUT 4.5 MHz OUT AUDIO LOOP THRU VIF OUT AIF OUT IFCW OUT CIF OUT L GND L R GND R S GND S A GND A OUT VIDEO IN VIDEO OUT 4.5 MHz IN 4.5 MHz OUT Subrack 1 Faulty Unit Connection Signal flow Subrack 2 VIF OUT Terminate - - AIF OUT Terminate - - IF CW OUT Terminate - - CIF IN Terminate - - VIDEO IN Terminate MHz IN Terminate - - Audio IN Open - - VIF IN VIF OUT AIF IN AIF OUT IF CW IN IF CW OUT CIF OUT CIF IN VIDEO OUT VIDEO IN 4.5MHz OUT 4.5MHz IN Audio OUT Audio IN Subrack 3 VIF IN AIF IN IFCW IN IN AUDIO LOOP THRU VIF OUT AIF OUT L GND L R GND R S GND S A GND A OUT VIDEO IN VIDEO OUT 4.5 MHz IN Subrack 3 Connection Subrack 2 Backup unit Signal flow VIF OUT VIF IN AIF OUT AIF IN IF CW OUT IF CW IN CIF IN CIF OUT VIDEO IN VIDEO OUT 4.5MHz IN 4.5MHz OUT Audio IN Audio OUT CIF IN IN IFCW OUT CIF OUT 4.5 MHz OUT AUDIO LOOP THRU L GND L R GND R S GND S A GND A OUT VIF IN Terminate - - AIF IN Terminate - - IF CW IN Terminate - - CIF OUT Terminate - - VIDEO OUT Terminate MHz OUT Terminate - - Audio OUT Open - - Figure Redundancy interconnect and signal flow. Stratum II Modulation System Owner s Manual Page 3-17

56 Installation Subrack 1 ALM EAS TRIG NO RLY/ NC SIG GND F 8 1 0F EAS OUT EAS IN 12 MHz OUT RS 232 Subrack 1 EAS Connection Signal flow Subrack 2 12 MHz IN EAS OUT Terminate - - EAS IN EAS OUT Subrack 2 ALM EAS TRIG NO RLY/ NC NRF COMMS Subrack 2 EAS OUT EAS IN Subrack n SIG GND F 8 EAS OUT EAS IN EAS IN EAS OUT From EAS source EAS IN 1 0F 12 MHz OUT RS 232 To enable EAS connect SIG pin to GND or to a remote relay that connects SIG to GND. Subrack n ALM EAS TRIG NO RLY/ NC 12 MHz IN NRF COMMS Subrack 1 EXT 12MHz Reference Connection Signal flow Subrack 2 12MHz OUT Terminate - SIG GND 8 EAS OUT 12MHz IN 12MHz OUT F 8 EAS IN Subrack 2 12MHz IN 1 0F 12 MHz OUT RS MHz OUT Subrack n 12MHz IN 12MHz OUT 12 MHz IN - From 12MHz Reference source 12MHz IN NRF COMMS Figure EAS and External 12MHz reference interconnect and signal flow. Page 3-18 Owner s Manual Stratum II Modulation System

57 Chapter 4 The NRF1000 And How To Set Up 1. Initial Setup Basic installation and wiring was covered in the prior chapter. This chapter discusses set up and operation of the frame subsystem. Install active modules from the front panel side, if not done already, to match your channel lineup plan. Match the active module with the rear interface card type already installed on in the rear. Exercise caution to line up the module with the slot. There are guides on top and bottom, beginning at the front panel that makes it difficult to not align the module in the slot. Press the module firmly into position. You will encounter some additional resistance in the last centimeter or so as the connectors on the module aligns and engage their mates on the midplane. ALWAYS INSTALL BLANK FRONT PANELS and REAR PANELS TO FORCE PROPER AIR FLOW when all slots in the frames are not in use. Removing active modules from the front of the frame requires that you press the lever under the active module to eject the module slightly, and then slide it out fully from the slot. MODULES ARE ESD SENSITIVE. Please practice electrostatic discharge sensitive handling procedures. 2. Make The Display Easy To View The front panel display can be optimized for your installation. The contrast of an LCD varies depending on the viewing angle, so a frame installed low or high in a rack may to be optimized for maximum contrast. From the Frame Controller display with SysMonitor box highlighted, press Down then Up button. Down will remain lighted. Rotate the knob to lighten or darken the display. To exit press Down button once. Any other button press will not allow you to exit. Stratum II Modulation System Owner s Manual Page 4-1

58 3. Navigation Rules The NRF1000 And How To Set Up The controller provides an interface for configuration and operation, as well as storing a copy of each module s operating configuration to allow a replacement or backup to assume the same operating conditions. Standard TMCommunications MODULE FRAME UP PRIOR NEXT DOWN ENTER EDIT Figure 4-1. Front Panel Interface. Shown is the Frame controller screen. The following applies to systems with one or more frames with master display panels on the front of the frame. The frame displays are divided into two main categories: System wide parameters and operations that have value when a multiple frame system is installed. The main displays in this group are SysMonitor and Backup. Frame and slot/module operations. The main displays here are the two NAM displays and the NSE display. Page 4-2 Owner s Manual Stratum II Modulation System

59 The NRF1000 And How To Set Up Each display may have two types of fields: Display only and selectable fields. Display only fields: show status of the module or system or are a parameter that can be set in another screen but repeated here for clarity or convenience. Selectable fields in a screen allows you to edit a parameter (an output level, for example) or to control an on-off function (muting, for example) to navigate to another screen or function. Typically these navigation boxes are located at the bottom of a display, with boxes on the left going to higher screen (more system oriented) and boxes to the right going to display with more details from the current screen. There are four buttons and a knob under the display that are primary navigation and editing tools: Prior, Next, Enter and Edit. The Next button is lighted when you are not editing a parameter and will move from an editable field to an editable field then to function boxes or navigation boxes, in a continuous looping. You will note the chosen field by the highlighted slider, outlined characters, or a double box around function or navigation boxes. The Prior button is the same as the Next button but reverses travel around the loop for your convenience. The Enter button lights and may be used when a parameter has been edited or a function/navigation box is highlighted. The chosen number will be entered and made active for the parameter or the function will be activated or the screen will change to the screen that was in the chosen navigation box. When a parameter is highlighted, you may press the Edit button and rotate the knob to select from numbers or a list of permitted values for the parameter. If you press Edit again, the parameter will revert back to the parameter value before pressing Edit the first time. When you press Enter, it will save the current value. (Note: The slider items may be changed in real time, so you may adjust a level and observe the effect without pressing Enter. The unit will continuously remain in EDIT mode until the EDIT or ENTER key is pressed.) Each frame has eight buttons arranged vertically that are navigation shortcut buttons that show the module for that slot. Pressing the top button will display the module functional screen for Slot #1 (leftmost), next down will display a screen for slot #2, and pressing lowest button will display a screen for slot #8. Caution: check that you are looking at the desired frame number after using the slot button. It is not necessarily the same frame as the frame where you pressed the button. The frame buttons include a Frame Up and Frame down button to assist in navigating between frames when using the SysMaster display. Any frame may display the screen for any other frame and slot in the system, assuming communication cabling has been installed. Stratum II Modulation System Owner s Manual Page 4-3

60 4. System Monitor Display The NRF1000 And How To Set Up The System Monitor display is the top-level picture of the multiple frame system. Allows the user to have a glance on the status of all the NRF1000 and its modules. This display shows a group of ten frames at a time. Note the frame that is being used to display this screen is always the first on the list. That is it is on the top of the list. Next to each frame number in the list are eight status boxes to quickly show any problem modules. Frame Module Status Frame address set via the rear panel encoded HEX switch. Operating normally Empty Slot B Backup Active A Alarm Condition X Shutdown M Module type mismatch Figure 4-2. System Monitor Screen. Pressing the Frame Up button will display the next group of up to 10 frame numbers, in a loop. Frame Down will travel the loop in reverse order. When the frame number list is highlighted, pressing Edit will allow the knob to select a frame number from the list. Pressing Enter will display the Frame Controller for the selected frame number, allowing full control of the selected frame. Page 4-4 Owner s Manual Stratum II Modulation System

61 The NRF1000 And How To Set Up Pressing Next/Prior will navigate between the list of frame numbers to the navigation box on the bottom of the display to allow set up of back up, clock, networking addresses, subnets and more. Selecting Backup Setup button send you to another screen to allow backup setup. Refer to 6 below. Selecting Network button sends you to another screen that will allow you to setup the IP addresses. Refer to 7 below. Selecting Maintenance button sends you to the clock set up screen. Refer to 8 below. Stratum II Modulation System Owner s Manual Page 4-5

62 5. Frame Controller Display The NRF1000 And How To Set Up The Frame Controller display is the top-level picture of a particular frame s configuration. As the illustration shows, it is a summary of the eight-slots. It shows the frame number, system time/date, RF channels (when modulators are installed that slot) and slot status. Hint: for routine operation in systems where all frames have the front panel display, this is a good display to leave on. If a problem develops, it provides an overview of the status of the frame and will allow you to press the module button to quickly access that frame s modules. Channel Type Status From 0 to 158, matching EIA/HRC/IRC designations. Zero is shown when the module is not a modulator, does not have channel indicator field or when slot is empty. Module type, currently, either NAM or NSE OK BU AL SD Operating normally Empty Slot or Dead Unit Backup Active Alarm Condition Shutdown MM Module type mismatch Figure 4-3. Frame Controller Screen. Page 4-6 Owner s Manual Stratum II Modulation System

63 5.1 Displaying the desired module The NRF1000 And How To Set Up Note that the Frame number displayed is the desired frame number (or that it contains the desired channel number) and press one of the slot buttons in the vertical row and the display will show that module s operation. Refer to following chapters for details on operation these modules. 6. Backup Setup/Monitor Display A single frame may be configured to handle redundancy or, in multiple frame systems, you may design for redundancy within a single frame. Where all redundancy is handled within one frame, it is referred to as Internal Redundancy. If redundancy is handled between 2 frames, it is referred to External Redundancy. 6.1 Backup Setup The definition of redundancy is having a backup or standby unit ready to configure itself to be the same as any active channel upon its failure. With this in mind, the concept to set back up in this display is to assign a location of the back up unit to the module that carries the source program in normal operation. The location of the back up unit is defined by the Frame number (To Frame field) and the Slot number (To slot number of the frame). This display is only used on the frame containing the module carrying the source program. In most cases, one unit is assigned as a back up for multiple units. Assigning a priority number (1 = Lowest, 256 = highest) in the priority field supports the PRORITY REDUNDANCY feature of the Stratum II. If multiple units are assigned the same priority, the unit stored first will have a higher priority. Figure 4-4. Backup Setup Screens. Stratum II Modulation System Owner s Manual Page 4-7

64 The NRF1000 And How To Set Up From the Frame Controller display, press the Next button until the SysMonitor box is highlighted (double lines in the box) and press Enter. This brings you to the System Monitor Display. Press the Next button until the Backup setup box is highlighted and press Enter. Pressing Next or Prior buttons will move the cursor to each field for entry. Enter the frame number in the To Frame fields. For internal Redundancy, enter the frames own address located on the FRAME # display. For external Redundancy, enter the address of the frames it is physically connected to. Enter the slot number in To Slot fields. The default priority for all slots is blank, or Off (no backup). If you attempt to backup a modulator into a stereo generator, or vice versa, the frame will erase your edits and advise Unable to set. To erase a backup setting, set the priority to ZERO. The To Frame and To Slot fields need not be changed. These will be cleared once you exit the display. The priority field cannot be changed if a backup is active. You must clear the fault to edit the field. 6.2 Backup Monitor The backup Monitor Display allows you to locate the slots the backup is assigned to. This display is only used on the frames containing the backup units. This is especially helpful in cases where a backup is assigned to multiple slots located in other or multiple NRF1000. The Cursor defaults at the Local slot field. Enter the slot number of the backup unit. Press Edit and select the number using the Knob. Press Enter to set. The system will list the location of all units it is backing up. The UP and DOWN buttons will be lit if the number of units listed is more than 8. Figure 4-5. Backup Monitor Screens Page 4-8 Owner s Manual Stratum II Modulation System

65 7. Network Display And Addressing The NRF1000 And How To Set Up The IP, subnet mask and gateway addresses are set in this screen. This must be set for proper Ethernet and redundancy-between-frames operation. Figure 4-6. Network Configuration Screen. The last 3 numbers (decimal) of the IP address are set by the rear panel hexadecimal encoded rotary switch, refer to Table 4-1 to convert hexadecimal to decimal. The first digit on the left is set by switch marked ADDR 4:7 and second digit is set by the switch marked ADDR 0:3. DO NOT ASSIGN DECIMAL 255 IN YOUR SYSTEM. This is a reserved address and if used, this address will not be allowed when you set To Frame address in backup set up screen. The cursor defaults at the leftmost digit of the IP address field. Pressing the next button will move the cursor to Subnet Mask (leftmost digit), Gateway (leftmost digit), Set and System Monitor. Another press will get you back to the IP address field. The reverse will happen if you press the Prior button. Editing the IP, Subnet Mask and Gateway addresses follows the navigation rules with some exception. The first Edit press within the field allows you to move the cursor between the number boxes using the Next/Prior keys. The second Edit press, allows you to set the number using the Knob. To exit you press Enter to save the entry. Or by aborting by pressing the Edit key. At this point you can move the cursor to the next number box. To accept the entry of all the numbers, press Enter, this will now allow you to move between the fields. Select SET to store the addresses. Stratum II Modulation System Owner s Manual Page 4-9

66 The NRF1000 And How To Set Up Table 4-1. Hexadecimal to Decimal conversion table. HEX DEC HEX DEC HEX DEC HEX DEC HEX DEC HEX DEC HEX DEC B 123 A4 164 CD 205 F A C 124 A5 165 CE 206 F B D 125 A6 166 CF 207 F C E 126 A7 167 D0 208 F D F 127 A8 168 D1 209 FA E A9 169 D2 210 FB F AA 170 D3 211 FC AB 171 D4 212 FD A AC 172 D5 213 FE B AD 173 D6 214 FF 255 0A C AE 174 D B D AF 175 D C E B0 176 D D F B1 177 DA 218 0E B2 178 DB 219 0F A 138 B3 179 DC B 139 B4 180 DD A C 140 B5 181 DE B D 141 B6 182 DF C E 142 B7 183 E D F 143 B8 184 E E B9 185 E F BA 186 E BB 187 E A BC 188 E B BD 189 E A C BE 190 E B D BF 191 E C E C0 192 E D F C1 193 EA 234 1E C2 194 EB 235 1F A 154 C3 195 EC B 155 C4 196 ED A C 156 C5 197 EE B D 157 C6 198 EF C E 158 C7 199 F D F 159 C8 200 F E A0 160 C9 201 F F A1 161 CA 202 F A2 162 CB 203 F A 122 A3 163 CC 204 F5 245 Page 4-10 Owner s Manual Stratum II Modulation System

67 7.1 Network Addressing The NRF1000 And How To Set Up The Stratum II frame, when connected to a PC or connected to other Stratum II frames, forms a network that use common Ethernet cabling and IP packets communications. The Stratum II frames may operate independently of a LAN or be connected to that LAN. This section will describe some basic network addressing modes Without an Existing LAN Connection Without an existing LAN connection, the user may implement any addressing scheme to the Stratum II frames. There are a couple of private IP networks that can be used, as long as it is never connected directly to the Internet. For a class C network, the private IP address should be in the range When the frames are connected using a section of these addresses, they will have the capability of connecting all on one subnet. If there is going to be a mixture of both master frames and slave frames, the only requirement would be that there be at least one master. This master will have the ability to assign all other slave frames the needed IP address information. An example of an addressing scheme is as follows: 1. Set the master s IP address as x, where x is the hard-coded address from the communication panel. 2. Set the master s Subnet Mask to Set the master s Gateway address to By following this addressing scheme, each frame will have the IP address of x, where x is the address assigned via the communication panel on each frame With an Existing LAN Connection If the user already has an existing LAN connection, it more than likely will be a class C network. This means that the Stratum II network will be on one or more subnets made from the main network. The number of Stratum II frames connected will determine the subnet size and mask Class C Network A class C network can have up to 254 hosts. In our case, a Stratum II frame will be considered a host. If the user were to connect the Stratum II frames onto their existing class C network, they will need to verify that the addresses on the communication panel are available and do not interfere with existing hosts. And once again, there should be at least one master per subnet. The best way to connect Stratum II frames will be to place them on a single subnet. The addressing setup will most likely be much easier. Here are some examples of subnet masks that can be used: 1. A subnet mask ending in.0 will yield 254 hosts. This is not recommended, if there are other non Stratum II hosts connected to the same network. 2. A subnet mask ending in.127 will yield 126 hosts. This should only be used if the user has the space, and plans to connect over 100 Stratum II frames with only one master. Stratum II Modulation System Owner s Manual Page 4-11

68 The NRF1000 And How To Set Up 3. A subnet mask ending in.192 will yield 62 hosts. If the user plans on having multiple masters, and in the neighborhood of frames, this may be an option. In this case, for one subnet, the master s IP address will be x.x.x.1 with all others going from x.x.x.2 to x.x.x.62. On another subnet, the master s IP address will be x.x.x.65 with all others going from x.x.x.66 to x.x.x.126. These two subnets will allow up to 124 Stratum II frames; with two of them being masters. 4. A subnet mask ending in.224 will yield 30 hosts. If the user plans on having multiple masters and connecting between frames, this may be a better option than number 3. In this case, for one subnet, the master s IP address will be x.x.x.1 with all others going from x.x.x.2 to x.x.x.30. On another subnet, the master s IP address will be x.x.x.33 with all others going from x.x.x.34 to x.x.x.62. These two subnets will allow up to 60 Stratum II frames; with two of them being masters. 5. A subnet mask ending in.240 will yield 14 hosts. As before, this setting will require multiple masters. The first two subnets will be as follows: for subnet 1, the master s IP address will be x.x.x.1 with all others going from x.x.x.2 to x.x.x.14, and for subnet 2, the master s IP address will be x.x.x.17 with all others going from x.x.x.18 to x.x.x.30. This setup will allow 14 frames per subnet, with one of them being a master. The examples above where the IP addresses were discussed show that the master is located at the first address of the subnet. This is not a requirement, and was just used for illustration purposes. The Frame address located on the communication panel will always determine the 4th octet in the frame s IP address. This should always be kept in mind when building a network connection with Stratum II frames. Each frame should be different and should not interfere with any other hosts attached to that network. Page 4-12 Owner s Manual Stratum II Modulation System

69 8. Setting up the Slave Unit The NRF1000 And How To Set Up In an 80-channel Stratum II system, it is recommended that there are 2 master configured NRF1000 frames. This way you have one spare frame with the display unit. Set the unique address of each NRF1000 frame (Slave or master). Refer to Network Display And Addressing, for rear panel switch setting. Power up the slave units, the units will start looking for a master controller or the utility. The controller will listen for the un-configured slave unit and automatically enter the network configuration information. Within ½ minute to a minute, you should see the System Status Table getting filled with all the NRF1000 slave units. Once all units are displayed on the status table, the configuration process is complete. 9. Clock Display This screen allows you to set the time and date. The cursor defaults in the Month field. Pressing the Next or Prior buttons places the cursor on the next field. To enter the time, move the cursor to the desired field and press Edit. Select the value by turning the Knob. Press Enter to set. You must select Set Clock, press edit and then save, for the system to store the updates. Figure 4-7. Real Time Clock Screen. Stratum II Modulation System Owner s Manual Page 4-13

70 10. Service The NRF1000 And How To Set Up This screen allows you to reset the NRF1000 to its factory default settings. All erase functions only erases the NVRAM and does not erase the active settings. The NVRAM information is read into the active memory area only at power up. So in order to clear the active settings, the user must recycle the power. Figure 4-8. Service screen. 11. Channel Database As a default, the database does not contain any channel name assigned to a channel, and any user Channel versus Frequency format. Using the Ethernet connection to a computer, one can manage the database. Refer to Chapter and Chapter 4 7 for setting up the Ethernet connection. With the use of the Stratum II utility provided, creation of such database is possible (Chapter 11 ). This feature is contained in release V2.10 of the NRF1000 firmware. Page 4-14 Owner s Manual Stratum II Modulation System

71 12. Model Number and Options The NRF1000 And How To Set Up All versions of the NRF1000 have a unique suffix. Each character in the suffix defines the version. The Model Number scheme below shows the suffix definition. NRF Combiner: 0 = 8 Outputs (no combiner) 1 = 1 Output (combined 8 to 1) 2 = 1 Output (combined odd slots 4 to 1) Reserved Figure 4-9. NRF1000 model numbering scheme. Front Panel Display/Control: 0 = Display/control panel installed (Master) 1 = Blank panel installed (slave) Power Supply: 0 = AC/DC Power Supply 1 = Dual -48Vdc only Part Number Description AS NRF1000 Chassis Subassembly AS RF Interface, 8 Outputs AS RF Interface, 1 Output (8 to 1) AS RF Interface, 1 Output (4 to 1) AS Redundancy Router Assy SM Panel, Blank Redundancy Router AS Front Panel Assembly SM Panel, Blank Control AS Power Panel Assembly, DC AS Power Panel Assembly, AC/DC AS AC/DC Power Supply Assy. Figure Components that build the NRF1000. Stratum II Modulation System Owner s Manual Page 4-15

72 The NRF1000 And How To Set Up 12.1 RF Interface AS The outputs of all 8 slots are available at the rear panel connector. Each slot is marked on the panel. The SUM connector is available but is not connected AS The 8 output connectors on this version of the RF interface card are not connected to the slot. The 8 RF signals are all combined and provided at the SUM connector AS The output connectors for slots 1, 3, 5 and 7 are combined and made available in the SUM connector. Connectors 2, 4, 6 and 8 are connected directly to these slots. Any modulator or upconverter module inserted in these slots will have their outputs available in these connectors. This version of the RF interface card is used for those systems with the NAM1000 in odd slots and NSE1000 in even slots. This is to minimize signal losses thru the combiner, thereby maximizing signal levels in the system Redundancy Router Backup of more than 7 units to 1 backup require that the signal be routed to another NRF1000 frame. This module functions as a signal router between the NRF1000 frames. It allows for the source signal from a faulty unit to be routed to the backup unit. The router is included in all current models 12.3 Front Panel Control This module gives the user the capability to view, monitor or change the NRF1000 parameters. Basically, this is the user interface Power Panel AS This is the AC/DC version of the power entry module. It provide a connection of external -48Vdc input and a 100 ~ 240 Vac input. The AC input is the primary power and the 48Vdc input is the secondary power AS This is the DC only power panel. Power to the NRF1000 is via external -48Vdc only. The Main input is the primary power and the AUX/BU is the secondary backup power. This panel is fused internally and is not user replaceable. Page 4-16 Owner s Manual Stratum II Modulation System

73 Chapter 5 How To Operate The NAM Front Panel Components The NAM1000 module s front panel includes LED channel number display, Alarm LED (red), which is activated on loss of video, audio, and RF. Backup LED is activated when that module is chosen to be used for redundancy or backup. Yellow when in standby mode and Red when Active. Video Clip LED (red) that is activated when the video is being over modulated. Levels: Green LED s vary in intensity relative to audio level for each input but change to red when over-deviating by 1 db Test points on the front panel for an audio test jack, video test port, and a RF test port. CHANNEL OUT ALARM BACKUP VIDEO CLIP AUDIO PEAK AUDIO TEST VIDEO TEST R F TEST 1 GHz MODULATOR Figure 5-1. NAM1000 Front Panel. Stratum II Modulation System Owner s Manual Page 5-1

74 How To Operate The NAM Rear Panel Components The NAM1000 module s rear panel includes 2 Status LEDs. This is a helpful tool to the technician to know the status of a frame or slot without having to go to the front of a unit. Alarm LED: GREEN, when a module is installed and no alarm is detected. RED, which is activated on loss of video, audio, and RF. This follows the front panel alarm. This is OFF when no unit is installed on the front. BU LED: GREEN, when the slot is assigned as a Backup unit and is not activated. RED is when the slot is in active back up mode. OFF is when the slot is not assigned as a backup. 3. Installing The NAM1000 If you have not done so already: Install rear interface cards into rear slots of the NRF1000 frame where your channel plan dictates. Install the NAM1000 active module in the front panel slot aligned with the installed NAM1000 rear interface cards. For Mono operation, connect audio out and video out from your source to the quick-disconnect audio strip inputs and to the Video In on the rear interface card. For stereo operation, connect the NSE1000 first and cable the NSE1000 outputs (Video and 4.5 MHz subcarrier or wideband audio) to the NAM1000. Connect your scrambler, if used, as required by that scrambler. Install IF loop-through for VIF or AIF where not used. 3.1 Jumper and settings AGC Mode Peak detect detects the peak signal and sets the IF level according the peaks. This is the factory set position. The Sync/Average position adjusts the IF level accordingly based on the sync pulse when video is present. It automatically uses average when video or sync pulses are not available. Pins AGC Detect 1 2 Peak (default) 2 3 Sync/Average Table 5-1. JR01 CIF AGC. Short the pins for the desired AGC mode. Page 5-2 Owner s Manual Stratum II Modulation System

75 How To Operate The NAM Swapping Modules The NAM1000 can be physically swapped with the NAM860 and NSM860 for temporary or normal use. Please check the channel setting (Channel, RF level, audio and video settings) after you swap out a unit. RULE: Anytime you replace the 1000MHz version unit in the slot with an 860MHz unit, the slot channel settings will not be loaded to the replacement unit. Instead, the Subrack (NRF1000) will read the replacement unit channel settings and show the details on the screen. It will immediately set RF MUTE ON. The user must set the new channel settings on the replacement unit. Example: You had an NAM1000 in Slot 4 set to CH50. The unit was replaced with an NSM860 or NAM860 that was previously set to CH 48. The subrack will read the channel information of the replacement unit, update the displayed screen then set the RF mute to ON. Unit in Slot Swapped with Normal Operation Backup Condition Notes or Limitations NAM1000 NAM860 Refer to Notes or Limitations Not Allowed o Channel setup of the replacement unit are used and displayed. o The system will set up the unit with RF MUTE set to ON. o User must check and set channel settings. NAM1000 NSM860 Refer to Notes or Limitations Not Allowed o Same as the NAM860. Table 5-2. Summary of NAM1000 Module compatibility. Stratum II Modulation System Owner s Manual Page 5-3

76 5. NAM1000 Displays How To Operate The NAM1000 Home and Configuration screens are the two principal display screens. They control the operation of the NAM1000 modulator module. The top-level NAM Modulator display is shown below. Review the prior chapter for general navigation rules to steer this display. A quick review: From the SysMaster, highlight the frame number list with the Knob, press Enter and select the frame number. Press Enter to display the Frame Controller display. In the Frame Controller display, confirm that the frame number shown is the desired frame, the press the slot button in the vertical column to display the desired slot/module. 5.1 The NAM Modulator Display The NAM Modulator Display shown include status-only fields: Figure 5-2. NAM1000 Control Screen. Frame and slot number in upper right. Always confirm whether you are displaying or changing the intended NAM module. Channel number, Frequency plan (EIA/HRC/IRC/Custom), and frequency. These are selected in the NAM Config display but presented here for convenience. Alarms. Displays messages reflecting status of this module. Page 5-4 Owner s Manual Stratum II Modulation System

77 How To Operate The NAM1000 Alarm Status OK Operating normally. Shutdown Module power is OFF. Overtemp Module High temperature exceeded. Unit turned off. Temp Module normal temperature range exceeded. PLL unlock IF or RF PLL unlock. RF Level Detected RF output level is low. Audio Modulation Audio Levels are greater than the threshold. Over Modulation Video over modulation threshold exceeded. Missing Module has been removed from the slot. Dead Module is not responding. Channel name. Displays the contents of the name field of frequency/channel plans loaded into the system via the panel download port, when used. The cursor starts at the most common activities: Video modulation level adjustment slider Audio modulation level adjustment slider RF output level adjustment slider A/V Ratio level adjustment slider Note that the cursor is indicated by the darkened square slider knob and level indicated by the square s position on the slider line. To edit a level, highlight the desired slider and press the Edit button. Rotate the front panel display knob to move the slider knob. Pressing Edit or any other buttons but Enter will revert back to the last saved value. Pressing Enter will save the changes you have made. (Note: The slider items may be changed in real time, so you may adjust a level and observe the effect without pressing Enter. The unit will continuously remain in EDIT mode until the EDIT or ENTER key is pressed.) Pressing the Next/Prior button will bring the cursor to the following boxes: Controller. Pressing Enter will move the display up to the Fame Controller display. Mute/Unmute box. Pressing Enter when Mute is highlighted will mute RF output and display Unmute in this box. Shutdown/Startup. Pressing Enter when this box is highlighted will turn the module completely off. Pressing Enter when Startup is highlighted will restart the module from a cold start condition, including all startup checks and communications with the frame. Config. Pressing Enter when this box is highlighted will navigate you to the next NAM screen, the NAM Config screen. Stratum II Modulation System Owner s Manual Page 5-5

78 5.2 The NAM Config Display How To Operate The NAM1000 There are two NAM1000 Config screens. In each screens the NAM Config status-only fields are: Frame and slot number in upper right. Always confirm whether you are displaying or changing the intended NAM module. Frequency. The frequency displayed is the result of selecting a channel plan, the channel and the offset value, and represents the actual output RF frequency. Serial Number located on the second configuration screen. Figure 5-3. NAM1000 Configuration Screen. There are 7 selectable parameters on the first configuration screen: Channel Number. Pressing edit when this field is highlighted and rotating the knob will increase or decrease the channel number Press Edit to terminate editing and revert to the last channel number. Press enter to change the RF output to the selected channel number. The frequency display will change. The RF output will mute and change frequency then unmute (unless Mute is turned on in the NAM menu). Channel Plan Offsets Clamp (video clamping) Video and Audio inputs to be used Page 5-6 Owner s Manual Stratum II Modulation System

79 How To Operate The NAM1000 Audio Bandwidth. Mono limits input frequency range above 15 khz while BTSC allows for wideband audio inputs up to and including SAP. CIF Input. Selects either the internally modulated and mixed Composite IF or accepts an external CIF (from a scrambler, for example.) VSB Filter. Filtering may be switched from VIF to CIF, to support various scramblers. Most scrambler used VIF but some scramblers from Scientific Atlanta may need to be set up using CIF filtering. Figure 5-4. Second NAM Configuration Screen (Planned feature in Release 2.1 firmware). The IF AGC and alarm parameters are found on the second configuration screen. The IF AGC select enables or disables the CIF automatic gain control. When the alarm parameters are set to Off, the alarm flag is masked and inhibiting the alarm flag from being reported. When set to On the alarm mask is removed, allowing for the system to report the alarm. Also, the user has the option to change the delay factor of an alarm. The delay factor is the amount of time an alarm status has to occur before the alarm flag is set to 1 or Alarm LED turned ON. Video Modulation. Pressing edit when this field is highlighted and rotating the knob will select ON or OFF. When set to On, press Next to move the cursor to the delay factor field. Press Edit, change the value using the knob and press Enter to store the value. Stratum II Modulation System Owner s Manual Page 5-7

80 How To Operate The NAM1000 Audio Modulation. Pressing edit when this field is highlighted and rotating the knob will select ON or OFF. When set to On, press Next to move the cursor to the delay factor field. Press Edit, change the value using the knob and press Enter to store the value. RF Level. Pressing edit when this field is highlighted and rotating the knob will select ON or OFF. When set to On, press Next to move the cursor to the delay factor field. Press Edit, change the value using the knob and press Enter to store the value. To return up to the NAM Modulator display, either press Enter when the NAM box is highlighted or press any of the vertical column of module buttons. Selecting Restore Defaults will set the NAM1000 to its factory defaults and erase any user setting. 5.3 NAM Redundancy Take heed on the following rules and conditions that were taken in implementing the redundancy: o o o An NAM1000 operating as a regular AMVSB modulator can be assigned 0as a backup to the NAM1000 operating with the NOP1000. An NAM1000 can only be assigned to another NAM1000 operating as a modulator for back up. Only following NAM1000 faults or conditions triggers a backup: o o o o Over temperature RF or IF PLL Unlock Unit removed from slot Shutdown Page 5-8 Owner s Manual Stratum II Modulation System

81 Chapter 6 How To Operate The NOP Installing The NOP1000 The NOP1000 is a frequency translation device. When you pair a modulator module with the NOP1000, the system controller automatically sets the modulator as an upconverter. This device will receive and transmit same channel but cannot maintain exact channel frequency and phase. This may not help reduce ingress artifacts in the system. The combination of a modulator and NOP1000 will not alter the modulation (visual modulation depth and the aural deviation). They are maintained at the levels set by the broadcast station. For monitoring purposes, the demodulated audio and video of the received off-air (terrestrial broadcast) channel is provided to the modulator front panel test port. The NOP1000 can be installed in any of the 8 rear slots. Note: A shoulder screw mounted on the side of the chassis causes an interference with the NOP1000 when installed in slot 8. NRF1000 chassis after Lot 00 has these screws removed. The lot number of the NRF1000 is the 2 digits after the U found within the serial number. Shoulder Screw Figure 6-1. Slot 8 and rear cowling shoulder screw. Stratum II Modulation System Owner s Manual Page 6-1

82 How To Operate The NOP1000 Power down the NRF1000 before removing and installing any rear panel interface card. If you are converting a slot that was formerly used as a modulator (AMVSB), remove the rear panel interface card and replace this with the NOP1000 rear panel interface card. Refer to Figure 6-2 for installation. Take care when inserting the card. Avoid bending the connector pins. Do not force fit the card into the connector. Figure 6-2. NOP1000 installation. Page 6-2 Owner s Manual Stratum II Modulation System

83 How To Operate The NOP Rear Panel Alarm LED The NOP1000 module s rear panel includes 2 Status LEDs. This is a helpful tool to the technician to know the status of a frame or slot without having to go to the front of a unit. Alarm LED: GREEN, when a module is installed and no alarm is detected. RED, which is activated on loss of video, audio, and RF. This follows the front panel alarm. This is OFF when no unit is installed on the front. BU LED: GREEN, when the slot is assigned as a Backup unit and is not activated. RED is when the slot is in active back up mode. OFF is when the slot is not assigned as a backup. 3. NOP1000 Displays Home and Configuration screens are the two principal display screens. They control the operation of the modules. Review the prior chapter for general navigation rules to steer this display. A quick review: From the SysMaster, highlight the frame number list with the Knob, press Enter and select the frame number. Press Enter to display the Frame Controller display. In the Frame Controller display, confirm that the frame number shown is the desired frame, then press the slot button in the vertical column to display the desired slot/module. Stratum II Modulation System Owner s Manual Page 6-3

84 How To Operate The NOP The Off Air Proc Display The Graphical Display shown include status-only fields: NAM1000/NOP1000 Pair NSM860/NOP1000 Pair Figure 6-3 Off Air Processor Home Screen. Frame and slot number in upper right. Always confirm whether you are displaying or changing the intended module. Channel number, Frequency plan (EIA/HRC/IRC/Custom), and frequency. These are selected in the Config display but presented here for convenience. Page 6-4 Owner s Manual Stratum II Modulation System

85 How To Operate The NOP1000 Alarms. Displays code reflecting status of this module. Alarm Status OK Operating normally. Shutdown Module power is OFF. Overtemp 1 Module High temperature exceeded. Unit turned off. Temp 2 Module normal temperature range exceeded. PLL unlock IF or RF PLL unlock. RF Level Detected RF output level is low. Ant Level NOP1000 fault. RF input level low. Tuner PLL NOP1000 fault. PLL unlock. Missing Module has been removed from the slot. Dead Module is not responding. Channel name. Displays the contents of the name field of frequency/channel plans loaded into the system via the panel download port, when used. The RF Output level slider can be edited in this display. The slider control interface changes according to the module type that is paired with the NOP1000. Please refer to Chapter for NAM1000 and Chapter for NSM860. Note that the cursor is indicated by the darkened square slider knob and level indicated by the square s position on the slider line. To edit a level, highlight the desired slider and press the Edit button. Rotate the front panel display knob to move the slider knob. Pressing Edit or any other buttons but Enter will revert back to the last saved value. Pressing Enter will save the changes you have made. (Note: The slider items may be changed in real time, so you may adjust a level and observe the effect without pressing Enter. The unit will continuously remain in EDIT mode until the EDIT or ENTER key is pressed.) Pressing the Next/Prior button will bring the cursor to the following boxes: Controller. Pressing Enter will move the display up to the Fame Controller display. Mute/Unmute box. Pressing Enter when Mute is highlighted will mute RF output and display Unmute in this box. Shutdown/Startup. Pressing Enter when this box is highlighted will turn the module completely off. Pressing Enter when Startup is highlighted will restart the module from a cold start condition, including all startup checks and communications with the frame. Config. Pressing Enter when this box is highlighted will navigate you to the Config screen. 1 Applies to NAM1000 only. 2 Applies to NAM1000 only. Stratum II Modulation System Owner s Manual Page 6-5

86 3.2 The Configuration Display How To Operate The NOP1000 The modulator/upconverter configuration parameters are limited in this screen. There are two Config screens. In each screens status-only fields are: Frame and slot number in upper right. Always confirm whether you are displaying or changing the intended NAM module. Frequency. The frequency displayed is the result of selecting a channel plan, the channel number and the offset value, and is a representation of the actual output RF frequency. Module Serial Number located on the second configuration screen. NAM1000/NOP1000 Pair NSM860/NOP1000 Pair Figure 6-4. Configration Screen Page 1. There are 6 selectable parameters on the first configuration screen: Channel Number. Pressing edit when this field is highlighted and rotating the knob will increase or decrease the channel number Press Edit or any other buttons except enter to terminate editing and revert to the last channel number. Press enter to change the RF output to the selected channel number. The frequency display will change. The RF output will mute, change frequency then unmute. If RF mute is turned ON during channel change, the RF output will stay muted. o o Module Channel Number. Selects the output channel and frequency NOP Channel Number. Selects the Input or received channel at the ANT input. Page 6-6 Owner s Manual Stratum II Modulation System

87 How To Operate The NOP1000 Channel Plan. The outcome of the output frequency is dependent on the setting of both the channel plans and the offsets. o o Module Channel plan. Selects the output channel and frequency plan. Input Channel plan. Selects the receive channel and frequency between broadcast and standard CATV channel. When you switch from Broadcast to CATV input channel plan, the NOP offset will automatically be set to 0 (zero) offset and the selection field will be disabled. Module Offsets: The outcome of the selected channel is dependent on the offset. o o Module Offsets. Applies the frequency offsets applied to the output frequency. The system will try to achieve the desired output frequency offsets correcting the selected NOP offsets. The table below shows the final offset frequency using the different combinations. Refer to Table 6-1. NOP Offsets. This applies correction for the broadcast offset producing a CIF frequency that is at MHz. Setting the offset to zero when the broadcast is offset by +10 KHz will produce a CIF frequency of MHz. NAM1000/NOP1000 Pair NSM860/NOP1000 Pair Figure 6-5. Configuration Screen Page 2. Stratum II Modulation System Owner s Manual Page 6-7

88 How To Operate The NOP1000 There are 2 selectable parameters on the second configuration screen. Input field selects the input between the antenna and CIF. When AUTO is selected, the antenna input is the primary input. When the received input drops below a certain level (0+/-3dBmV), the source is switched to CIF (EXT). When the ANT is selected, the input is fixed at the antenna input. When CIF (EXT) is selected, antenna input is disabled and the module receives CIF from the rear panel input connector. Alarm RF Level: RF output level detect alarm parameter is set in this screen. This controls whether the RF alarm is triggered when the RF level drops. To return to the home screen, either press Enter when the module/nop (NAM/NOP or NSM/NOP) box is highlighted, or press any of the vertical column module buttons then re-select the slot. Selecting Restore Defaults will set the NAM1000 to its factory defaults. 3.3 Redundancy with NAM/NOP or NSM/NOP Pair Take heed on the following rules and conditions that were taken in implementing the redundancy: o o o o o The backup of the same module pair is only permitted. That is, a NAM/NOP pair by another NAM/NOP or an NSM/NOP by another NSM/NOP. This is only true in situations where the back up unit is located in a separate subrack. This backup configuration will backup both the faulty NOP1000 and modulator. The backup is accomplished by reconfiguring the backup unit pair without re-routing the CIF signal. It is important that the backup unit pair is properly connected to the antenna and system combiner for its input and output respectively. A modulator operating as a regular AMVSB modulator can be assigned as a backup to the same modulator operating with the NOP1000. This configuration will only backup the faulty modulator. It is accomplished by reconfiguring the faulty NAM/NOP slot to re-route the CIF signal to the backup modulator. This is only true in situations where the back up unit is located in the same subrack. Backup is triggered only by the respective modulator faults and if there are no faults on the NOP1000 card the faulty modulator is replaced by the assigned backup unit. The frame controller does not accept the assignment of a modulator/nop pair as a backup of a modulator. NOP fault that will trigger a backup: o PLL unlock 3 o Temperature 4 o Hardware Fault 5 3 Applies to NAM1000, NSM860 and NAM860 4 Applies to NAM1000 only 5 Applies to NSM860 only Page 6-8 Owner s Manual Stratum II Modulation System

89 How To Operate The NOP1000 Modulator Offset (GUI) Broadcast Offset (GUI) Modulator internal setting Actual Offset Outcome -25 khz khz 0 khz khz +25 khz +10 khz Change is not accepted. Current offset frequency is retained. Change is not accepted. Current offset frequency is retained khz -25 khz -10 khz khz khz +10 khz -25 khz -15 khz khz khz -10 khz 0-10 khz +10 khz khz -2.5 khz khz khz +2.5 khz +10 khz khz khz khz -10 khz +25 khz -10 khz +10 khz khz khz khz +25 khz -10 khz Change is not accepted. Current offset frequency is retained. Change is not accepted. Current offset frequency is retained. Table 6-1. Module/NOP1000 Offset Frequency Table. Stratum II Modulation System Owner s Manual Page 6-9

90 4. Swapping Modules How To Operate The NOP1000 You can swap an NAM type module with the NSM860 in the NOP1000 slot as a temporary or normal use. Please check the channel setting (Channel, RF level, audio and video settings) after you swap out a unit. RULE: Anytime you replace the 1000MHz version unit in the slot with an 860MHz unit, the slot channel settings will not be loaded to the replacement unit. Instead, the Subrack (NRF1000) will read the replacement unit channel settings and show the details on the screen. It will immediately set RF MUTE ON. The user must set the new channel settings on the replacement unit. Refer to Chapter 5 4 If you are to physically remove the existing module and replace this with another module type/model, the system will set the replacement as close to the slot channel setting as possible. The limitations are outlined in the table below. Unit in Slot Swapped with Normal Operation Notes or Limitations NAM1000 NAM860 Refer to Notes or Limitations o Channel setup of the replacement unit are used and displayed. o The system will set up the unit with RF MUTE set to ON. o User must check and set channel settings. NAM860 NAM1000 Refer to Notes or Limitations o Channel setup of the replacement unit are used and displayed. o The system will set up the unit with RF MUTE set to ON. o User must check and set channel settings. NAM1000 NSM860 Refer to Notes or Limitations o Channel setup of the replacement unit are used and displayed. o The system will set up the unit with RF MUTE set to ON. o User must check and set channel settings. NSM860 NAM1000 Refer to Notes or Limitations o Channel setup of the replacement unit are used and displayed. o The system will set up the unit with RF MUTE set to ON. o User must check and set channel settings. NSM860 NAM860 OK o All Channel settings are copied over. NAM860 NSM860 OK o All Channel settings are copied over. Table 6-2. Summary of NOP1000 functionality to Slot Module compatibility. Page 6-10 Owner s Manual Stratum II Modulation System

91 How To Operate The NOP Auto Switchover When maintaining the presence of a channel carrier when the off air broadcast ends transmission is a must, this section will describe how this can be accomplished with the NOP1000. The use of an externally generated 45.75MHz carrier is needed for this application. This carrier is applied to the CIF IN (EXT) at 40dBmV. This signal can also be a modulated CIF (Video and aural carrier), that provides information to the user in the absence of the off air broadcast. Every NAM1000, NAM860 and NSM860 has a CW signal at 45.75MHz available. The rear panel F connector is marked IFCW OUT for the NAM1000 and IFCW/4.5 OUT for the NAM860 and NSM860. You can use this CW signal as your external source. If you use this signal as the source, you will need a 12dB pad between the source and the CIF IN of the NOP1000. You ll need to set IF switch of the NAM860 or NSM860 for IF CW. Stratum II Modulation System Owner s Manual Page 6-11

92 How To Operate The NOP1000 Adjacent slot modulator - NSM860. For the NSM860 or NAM860 models, set the IFSW select to IF CW. 12dB Pad BU ALM OR CIF IN ANT IN Video and audio source Using a TVM860 as the modulator for the bulletin message board when signal is lost. Make sure you have the IF loops (Visual and Aural) connected. Page 6-12 Owner s Manual Stratum II Modulation System

93 Chapter 7 How To Operate The NSE Front Panel Components The NSE1000 module s front panel includes Alarm LED (red). Activated on loss of video, audio, or RF. Backup LED is activated when that module is chosen to be used for redundancy or backup. Yellow when in standby mode and Red when Active. Test Tone LED (yellow). Indicates tone used for Bessel Null is on. This should not be on in normal operation Video Lock: (green). Indicates BTSC generator has locked onto input video horizontal line rate. Mode: LED s indicate Mono, Stereo and SAP operation at a glance. Levels: Green LED s vary in intensity relative to audio level for each input but change to red when over-deviating by 1 db. Test jacks for Stereo audio and SAP audio. ALARM BACKUP TEST TONE VIDEO LOCK MODE STEREO STEREO / SAP STEREO /MONO MONO AUX AGC LEVELS LEFT RIGHT SAP SAP BTSC GENERATOR Figure 7-1. NSE1000 Front Panel. Stratum II Modulation System Owner s Manual Page 7-1

94 How To Operate The NSE Rear Panel Components The NSE1000 module s rear panel includes 2 Status LEDs. This is a helpful tool to the technician to know the status of a frame or slot without having to go to the front of a unit. Alarm LED: GREEN, when a module is installed and no alarm is detected. RED, which is activated on loss of video, audio, and RF. This follows the front panel alarm. This is OFF when no unit is installed on the front. BU LED: GREEN, when the slot is assigned as a Backup unit and is not activated. RED is when the slot is in active back up mode. OFF is when the slot is not assigned as a backup. 3. Installing The NSE1000 If you have not done so already: Install rear interface cards into rear slots on the NRF1000 frame where your channel plan dictates. Install the NSE1000 active module in the front panel slot aligned with the installed NSE1000 rear interface cards. Connect audio out and video out from your source to the quick-disconnect audio strip inputs and to the Video In on the rear interface card. Connect 4.5 MHz output and Video Out on rear interface card to Video In and 4.5 MHz In on any available NAM1000 modulator rear interface card. 3.1 Jumpers and Setting Pins AGC2000 Not Installed AGC2000 Installed 1 2 Shorted Open 3 4 Shorted Open 5 6 Open Open 7 8 Shorted Open 9 10 Shorted Open Table 7-1. PL02 jumper settings. Note these jumpers can be omitted and is only added to terminate the floating input pins to the switch. Pins Normal 1 8 Open 9 10 Open Table 7-2. PS01, ADC interface jumper setting. Page 7-2 Owner s Manual Stratum II Modulation System

95 How To Operate The NSE Installing The SAP2000 Option Line up pin 1 of the 50pin ribbon cable (pin 1 is marked red on the cable) to pin 1 of PS09 on the NSE1000. Make sure the other end of the cable is connected to P6 of the SAP2000. Secure the PCA with the provided 3mm screws (4pcs). Test the unit. Install the NSE1000 to the NRF1000. Apply the SAP audio source to the corresponding input slot. On the user interface, set the configuration to Stereo & SAP. The selection should be accepted and the SAP channel present on your CATV received channel. 5. Installing The AGC2000 Option Install the standoffs provided onto the NSE1000 PCA. Remove all jumpers on PL02. Line up and carefully insert the AGC2000 PCA connectors to PL01, PL02 and PL03. Check that all pins are secure. Secure the PCA with the provided 3mm screws (3pcs). Test the unit. Install the NSE1000 to the NRF1000. Apply the audio source to the corresponding input slot. On the user interface, set the configuration to AGC ON. The selection should be accepted and the audio level change on your CATV received channel. Vary the audio input level and note that clipping or distortion levels are controlled. 5.1 Jumper and settings Pins AGC level dB dB 5 6-9dB 7 8-6dB Table 7-3. AGC level setting. Short the pins for the desired AGC level. Pins Normal 1 2 Closed 3 4 Closed Table 7-4. PA04, 06 and 07, jumper setting. Stratum II Modulation System Owner s Manual Page 7-3

96 6. NSE1000 Displays How To Operate The NSE1000 Home and Configuration screens are the two principal display screens. They control the operation of the NSE1000 module. The top-level NSE Stereo display is shown below. Review the prior chapter for general navigation rules to steer this display. A quick review: From the SysMaster, highlight the frame number list with the Knob, press Enter and select the frame number. Press Enter to display the Frame Controller display. In the Frame Controller display, confirm that the frame number shown is the desired frame, the press the slot button in the vertical column to display the desired slot/module. 6.1 The NSE Stereo Display From the frame controller display, or from either NAM display, press the module slot button in the column that corresponds to the desired NSE1000. Figure 7-2. NSE1000 Control and Configuration Screen. The NSE1000 display shown include status-only fields: Frame and slot number in upper right. Always confirm whether you are displaying or changing the intended NSE module. Page 7-4 Owner s Manual Stratum II Modulation System

97 How To Operate The NSE1000 Alarms. Messages reflecting alarm status is displayed. Alarm Status OK Operating normally. Shutdown Module power is OFF. Missing Module has been removed from the slot. Phase Lock There is no video source. Dead Module is not responding. Aux Level Aux level is greater than the threshold. Left Level Left stereo channel level threshold exceeded. Right Level Right stereo channel level threshold exceeded. SAP Level The SAP level threshold exceeded. Serial Number located on the second screen. The cursor starts at the most common activities: Left audio level adjustment slider Right audio level adjustment slider SAP (secondary audio program) audio level adjustment slider Auxiliary audio channel level adjustment slider Note that the cursor is indicated by the darkened square slider knob and level indicated by the square s position on the slider line. To edit a level, highlight the desired slider and press the Edit button. Rotate the front panel display knob to move the slider knob. Press Edit again to revert back to the last saved value or press Enter to save and make effective the changes you have made. (Note: The slider items may be changed in real time, so you may adjust a level and observe the effect without pressing Enter. The unit will continuously remain in EDIT mode until the EDIT or ENTER key is pressed.) There are parameter fields that can be selected by highlighting the field with the Next/Prior button, press Edit, the using the knob to select the value desired. Pressing Edit again will terminate the editing process and revert to the last saved value. Pressing Enter will save the change and make it effective. Test Tone: Tone used for Bessel Null adjustment of the external 4.5MHz subcarrier deviation. Select tone ON or OFF (normal operation). Mode: Mono audio (no pilot tone), Stereo (BTSC), and Stereo with SAP. Stereo + SAP can only be selected when the SAP option (SAP2000) is installed. AGC: On/Off on all four inputs (Left, Right, SAP, Aux). This function is functional only when the AGC option (AGC2000) is installed. When set to ON, the level adjust are disabled. Output Select: 4.5 subcarrier or Video and 4.5 MHz subcarrier together Pressing the Next/Prior button will bring the cursor to the following boxes: Stratum II Modulation System Owner s Manual Page 7-5

98 How To Operate The NSE1000 Controller. Pressing Enter will move the display up to the Fame Controller display. Shutdown/Startup. Pressing Enter when this box is highlighted will turn the module completely off. Pressing Enter when Startup is highlighted will restart the module from a cold start condition, including all startup checks and communications with the frame. 6.2 The NSE Config Display There are 4 selectable alarm parameters, Left, Right, SAP and Aux Audio Detect, on the second configuration screen. Alarm parameters are set in this screen. When set to On the user has the option to change the delay factor of an alarm. The delay factor is the amount of time an alarm status is detected before the alarm flag is set to 1 or Alarm LED turned ON. Pressing edit when this field is highlighted and rotating the knob will select ON or OFF. When set to On, press Next to move the cursor to the delay factor field. Press Edit, change the value using the knob and press Enter to store the value. Figure 7-3. Second NSE1000 screen. Alarm set and restoring defaults. (Planned feature in Release 2.1 firmware). Page 7-6 Owner s Manual Stratum II Modulation System

99 How To Operate The NSE NSE Redundancy Take heed on the following rules and conditions that were taken in implementing the redundancy: o o An NSE1000 can only be assigned to another NSE1000. Only following NSE1000 faults or conditions triggers a backup: o o Unit removed from slot Shutdown Stratum II Modulation System Owner s Manual Page 7-7

100 How To Operate The NSE1000 THIS PAGE INTENTIONALLY BLANK Page 7-8 Owner s Manual Stratum II Modulation System

101 Chapter 8 How To Operate The NSM Modes of Operation The NSM860 can be set to operate in multiple modes. To successfully configure the unit in the various operational modes, the NSM860 must have its own rear panel interface card. Note: The NSM860 can work using a NAM1000 rear panel interface card. In this case the audio input signal is present only to the Left audio input of the NSM860, the 4.5MHzOUT is available on the IFCW connector and the Video Input is only 75Ω. 1.1 Video Modulator and BTSC Encoder This is the most commonly used mode of operation. This is the factory default of the unit. Baseband video and narrow band audio (50Hz to 15KHz) signals are fed to the inputs, modulated to an IF (VIF and AIF), combined (in the rear panel interface) to create the CIF and finally up converted to a specific channel. The audio inputs are Left, Right and SAP. These are processed to create the BTSC baseband composite signal and are modulated by the internal 4.5MHz FM modulator. This process is digitally implemented. Notes: The NSM860 doesn t have the additional audio AUX input present in the NSE Video Modulator and External 4.5MHz Input This is the same as in 1.1 except the audio input and internal audio sub-carrier (4.5MHz modulator) is disabled. The audio sub-carrier is externally generated and applied to the 4.5MHz IN connector. No physical set up is required on the rear panel interface card. To set the unit in this mode, you must set the unit s Video/Audio Input to BB Video, Ext 4.5MHz using the front panel user interface. 1.3 Video + 4.5MHz Modulator In this mode of operation, the signal applied to the Video IN connector is a combined baseband video and audio sub-carrier (4.5MHz) signal, also known a composite video. Both signals are fed to the video input connector. In the NSM860, the video signal is processed to remove the 4.5MHz sub-carrier by turning on the 4.5MHz trap. This is then fed to the following stages for modulation and up-conversion. As for the 4.5MHz signal path, the video is removed by band pass filtering the sub carrier, then up-converting it to 41.25MHz, and finally to the output channel. In short, the NSM860 pre-processes the composite video signal to a discrete video and 4.5MHz. No physical set up is required on the rear panel interface card. Stratum II Modulation System Owner s Manual Page 8-1

102 How To Operate The NSM860 To set the unit in this mode, you must set the unit s Video/Audio Input to Composite Video using the front panel user interface. 1.4 BTSC Encoder and Upconverter In this mode the Video Input is set for Hi impedance and the 4.5MHz IN connector is converted to a video loop out. The audio is encoded and modulated onto the internally generated 4.5MHz subcarrier and made available to the 4.5MHz Out connector. This is an application for baseband scrambling system similar to Jerrold MVP series. The signals applied to the unit are video and baseband audio. To configure the unit for this mode do the following: 1.5 IF Up Converter a. Set the dip switch of the rear panel interface card to bridge the Video with 4.5MHz In connector. Refer to Table 8-1. b. Set the IFCW/4.5MHz OUT connector as a 4.5MHz Output. Using the front panel interface, set the IF switch to 4.5MHz output. c. If needed, set the unit to accept the external CIF. Using the front panel interface set the input to EXT. As an IF up converter, the sections being used in the unit are the IF and RF stages. This mode can be selected by configuring the unit for External CIF while the internal IF generator is muted. The user should apply the source signal to the external CIF IN. Breaking the VIF loop and applying the external CIF signal to the VIF input is another way of connecting the unit as an IF up converter. This method is not recommended due to the possibility of causing signal beat between the internal IF and the external IF signal. In this mode all IF and RF configurable parameters and monitor circuits are used. They are IF AGC, VSB location (CIF or VIF), RF low detection, and RF output level adjustment. The VSB filter will be applied to the external signal only when set for CIF. The VSB filter location is set to the CIF path to reject out of band signal. This filter prevents out of band signals from being up converted and becoming part of the transmitted signal. No special settings are needed in the rear panel interface card. The rear panel interface card can be configured to Internal or External CIF via the front panel GUI. When pairing this unit with an NOP1000, the system will automatically set the NSM860 to this operational mode. Refer to Chapter 6. Page 8-2 Owner s Manual Stratum II Modulation System

103 How To Operate The NSM Channel Plan The unit can be set to output channel frequencies for STD, IRC and HRC. This can be selected via the front panel GUI HRC Plan Special consideration must be taken when operating the unit in HRC. You must use an external reference oscillator frequency of MHz. For this application, you can use the Standard Communications Corp. reference oscillator Model REFGEN12. The NRF1000 has high impedance external reference IN/OUT connectors. This provides you the capability to loop the signal IN/OUT of one NRF1000 to the next. Refer to Chapter Stratum II Modulation System Owner s Manual Page 8-3

104 How To Operate The NSM Front Panel Components The NSM860 module s front panel includes LED channel number display, Video Clip LED (red) that is activated when the video is being over modulated. Alarm LED (red). Activated on loss of video, audio, or RF. Backup LED is activated when that module is chosen to be used for redundancy or backup. Yellow when in standby mode and Red when Active. Video Lock: (green). Indicates BTSC generator has locked onto input video horizontal line rate. Figure 8-1. NSM860 Front Panel. Mode: LED s indicate Mono, Stereo and SAP operation at a glance. Levels: Green LED s vary in intensity relative to audio level for each input but change to red when over-deviating by 1 db. Test points on the front panel for Stereo and SAP audio test jack, video test port, and a RF test port. Page 8-4 Owner s Manual Stratum II Modulation System

105 How To Operate The NSM Rear Panel Components The NSM860 module s rear panel includes 2 Status LEDs. This is a helpful tool to the technician to know the status of a frame or slot without having to go to the front of a unit. Alarm LED: GREEN, when a module is installed and no alarm is detected. RED, which is activated on loss of video, audio, and RF. This follows the front panel alarm. This is OFF when no unit is installed on the front. BU LED: GREEN, when the slot is assigned as a Backup unit and is not activated. RED is when the slot is in active back up mode. OFF is when the slot is not assigned as a backup. 3.1 Jumpers and Setting Video and 4.5MHz IN connector The Video Input can be configured for an input impedance of 75Ω or 10KΩ via internal DIP Switch. Switch SB01 SW1 SW2 SW3 Operational Mode Termination ON OFF ON As a Video Modulator and BTSC Encoder As a Video + 4.5MHz Modulator Video and 4.5MHz IN connector, 75Ω OFF ON OFF As a BTSC Encoder and Upconverter Video and 4.5MHz IN connector Bridged, 10KΩ ON OFF OFF As a Video Modulator and External 4.5MHz Video IN, 10KΩ 4.5MHz IN, 75Ω Table 8-1. SB01 switch settings Setting Audio Impedance The audio input impedance can be set to 600Ω or 10KΩ via switch SA01. Set the switch to ON for 600Ω or OFF for 10KΩ. Stratum II Modulation System Owner s Manual Page 8-5

106 4. Installing The NSM860 If you have not done so already: How To Operate The NSM860 Install rear interface cards into rear slots on the NRF1000 frame where your channel plan dictates. Make certain the NRF1000 is shut-off before installation. Install the NSM860 active module in the front panel slot aligned with the installed NSM860 rear interface cards. Connect audio out and video out from your source to the quick-disconnect audio strip inputs and to the Video In on the rear interface card. Connect your scrambler, if used, as required by that scrambler. Install IF loop-through for VIF or AIF where not used. Page 8-6 Owner s Manual Stratum II Modulation System

107 How To Operate The NSM Swapping Modules You can swap an NSM860 with the NAM1000 and NAM860 for temporary or normal use. Please check the channel setting (Channel, RF level, audio and video settings) after you swap out a unit. RULE: Anytime you replace the 1000MHz version unit in the slot with an 860MHz unit, the slot channel settings will not be loaded to the replacement unit. Instead, the Subrack (NRF1000) will read the replacement unit channel settings and show the details on the screen. It will immediately set RF MUTE ON. The user must set the new channel settings on the replacement unit. Refer to Chapter 5 4 The limitations are outlined in the table below. Unit in Slot Swapped with Normal Operation Backup Condition Notes or Limitations NSM860 NAM860 OK OK o The Rear Panel Interface card will be set to sum the Left and Right Audio. This becomes the Mono audio source for the NAM860. This is true for both Normal operation and backup condition. o All Channel Settings except for stereo settings are copied over. These are channel, RF level, video modulation and audio modulation. NSM860 NAM1000 Refer to Notes or Limitations Not Allowed o The audio will be processed the same as the NAM860. o Channel setup of the replacement unit are used and displayed. o The system will set up the unit with RF MUTE set to ON. o User must check and set channel settings. 6. SAP Option Table 8-2. Summary of NSM860 Module compatibility. SAP option can only be added in the factory. If you have the SAP option, the NRF1000 will provide you access to configure the unit to STEREO & SAP mode. Stratum II Modulation System Owner s Manual Page 8-7

108 7. NSM860 Displays How To Operate The NSM860 Home and Configuration screens are the two principal display screens. They control the operation of the NSM860 modulator module. The top-level NSM Modulator display is shown below. Review the prior chapter for general navigation rules to steer this display. A quick review: From the SysMaster, highlight the frame number list with the Knob, press Enter and select the frame number. Press Enter to display the Frame Controller display. In the Frame Controller display, confirm that the frame number shown is the desired frame, the press the slot button in the vertical column to display the desired slot/module. 7.1 The NSM Stereo Modulator Display The NSM Modulator Display shown include status-only fields: Figure 8-2. NSM860 Control Screen. Frame and slot number in upper right. Always confirm whether you are displaying or changing the intended NSM module. Channel number, Frequency plan (EIA/HRC/IRC/Custom), and frequency. These are selected in the NSM Config display but presented here for convenience. Page 8-8 Owner s Manual Stratum II Modulation System

109 How To Operate The NSM860 Alarms. Displays messages reflecting status of this module. Alarm Status OK Operating normally. Shutdown Module power is OFF. PLL unlock IF or RF PLL unlock. RF Level Detected RF level is out of set range in Auto RF ON or Low in Auto RF OFF. Audio Modulation Audio Levels are greater than the threshold. Over Modulation Video over modulation threshold exceeded. Missing Module has been removed from the slot. Dead Module is not responding. HDW (001) Hardware Fault: Tuner module does not exist. HDW (002) Hardware Fault: Tuner not started HDW (004) Hardware Fault: Tuner setup failed. HDW (008) Hardware Fault: Tuner communications failed. HDW (0016) Hardware Fault: BTSC not installed. HDW (0032) Hardware Fault: BTSC communications failed. Channel name. Displays the contents of the name field of frequency/channel plans loaded into the system via the utility. The cursor moves through the screen in the following order. Audio modulation level adjustment slider Left. This is the default of the cursor anytime you start viewing the screen. Audio modulation level adjustment slider Right. Audio modulation level adjustment slider SAP. Coarse RF output level entry. o In Auto adjust, the entry is in dbmv from 50 to 62. o In Manual adjust, the entry is a unit less coarse adjustment scale from 1(lowest possible level) to 7 (highest possible level). To set your RF level, change this value to attain an output that is about 1dB from target. Then with the fine level slider, adjust the output the desired level. RF output fine level adjustment slider. This adjusts the level in 0.5dB steps. Video modulation level adjustment slider A/V Ratio level adjustment slider Note that the cursor is indicated by the darkened square slider knob and level indicated by the square s position on the slider line. Stratum II Modulation System Owner s Manual Page 8-9

110 How To Operate The NSM860 To edit a level, highlight the desired slider and press the Edit button. Rotate the front panel display knob to move the slider knob. Pressing Edit or any other buttons but Enter will revert back to the last saved value. Pressing Enter will save the changes you have made. (Note: The slider items may be changed in real time, so you may adjust a level and observe the effect without pressing Enter. The unit will continuously remain in EDIT mode until the EDIT or ENTER key is pressed.) Pressing the Next/Prior button will bring the cursor to the following boxes: Controller. Pressing Enter will move the display up to the Fame Controller display. Mute/Unmute box. Pressing Enter when Mute is highlighted will mute RF output and display Unmute in this box. Shutdown/Startup. Pressing Enter when this box is highlighted will turn the module completely off. Pressing Enter when Startup is highlighted will restart the module from a cold start condition, including all startup checks and communications with the frame. Config. Pressing Enter when this box is highlighted will navigate you to the next NSM screen, the NSM Config screen. Page 8-10 Owner s Manual Stratum II Modulation System

111 How To Operate The NSM The NSM Config Display There are three NSM Config screens. In each screens the NSM Config statusonly fields are: Frame and slot number in upper right. Always confirm whether you are displaying or changing the intended NSM module. Frequency. The frequency displayed is the result of selecting a channel plan, the channel and the offset value, and represents the actual output RF frequency. Serial Number located on the second configuration screen. Figure 8-3. NSM860 Configuration Screen. There are 5 selectable parameters on the first configuration screen: Channel Number. Pressing edit when this field is highlighted and rotating the knob will increase or decrease the channel number. Press Enter to after the selection and the frequency display will change. The RF output will mute and change frequency then unmute (RF will not unmute after channel change if Mute is turned on in the NSM Home menu). Press Edit to terminate editing and revert to the last channel number. Channel Plan Offsets Clamp (video clamping) Video and Audio inputs to be used Audio Mode. Stratum II Modulation System Owner s Manual Page 8-11

112 How To Operate The NSM860 Figure 8-4. Second NSM Configuration Screen. Additional parameters are found on the second configuration screen. CIF Input. Selects either the internally modulated and mixed Composite IF or accepts an external CIF (from a scrambler, for example.) CIF Detect: Set the IF AGC level detection for sync tip or peak. Use sync tip for unencrypted signal. Use peak for encrypted signal. This value holds true when IF AGC is set to ON. VSB Filter. Filtering may be switched from VIF to CIF, to support various scramblers. Most scrambler used VIF but some scramblers from Scientific Atlanta may need to be set up using CIF filtering. The IF AGC select enables or disables the CIF automatic gain control. IF Switch: This sets the shared F connector on the rear panel interface card for either a 4.5MHz output or IFCW output signal. Trap: Set the trap ON if the baseband input at the video is a composite video (video with 4.5MHz). Set this to off if you are applying a normal baseband video. RF Control: When set to ON, the user can adjust the output level in dbmv. When set to OFF, the user sets the level manually and the values entered or shown in the RF control has no unit. Page 8-12 Owner s Manual Stratum II Modulation System

113 How To Operate The NSM860 Figure 8-5. Third NSM Configuration Screen. The third configuration screen has the alarms and masks. When the alarm parameters are set to Off, the alarm flag is masked and inhibiting the alarm flag from being reported. When set to On the alarm mask is removed, allowing for the system to report the alarm. Also, the user has the option to change the delay factor of an alarm. The delay factor is the amount of time (seconds) an alarm status has to occur before the alarm flag is set to 1 or Alarm LED turned ON. RF Level. Pressing edit when this field is highlighted and rotating the knob will select ON or OFF. When set to On, press Next to move the cursor to the fault level field. The value entered in this field is in db and valid only when the RF control is set to ON. Press Edit, change the value using the knob and press Enter to store the value. Video Modulation. Pressing edit when this field is highlighted and rotating the knob will select ON or OFF. When set to On, press Next to move the cursor to the delay factor field. Press Edit, change the value using the knob and press Enter to store the value. Video detect: This sets detect alarm ON or OFF. When ON a video loss will be detected and an alarm flag is set. Audio Modulation. Pressing edit when this field is highlighted and rotating the knob will select ON or OFF. When set to On, press Next to move the cursor to the delay factor field. Press Edit, change the value using the knob and press Enter to store the value. To return up to the NSM Modulator display, either press Enter when the NSM Home is highlighted or press any of the vertical column of module buttons. Stratum II Modulation System Owner s Manual Page 8-13

114 How To Operate The NSM860 Selecting Restore Defaults will set the NSM860 to its factory defaults and erase any user setting. 7.3 NSM Redundancy Take heed on the following rules and conditions that were taken in implementing the redundancy: o o o An NSM860 operating as a regular AMVSB Stereo modulator can be assigned as a backup to the NSM860 operating with the NOP1000. An NSM860 can only be assigned to another NSM860 operating as a modulator for back up. Only following NSM860 faults or conditions triggers a backup: o o o RF or IF PLL Unlock Unit removed from slot Shutdown 7.4 NSM compatibility as a spare The NSM860 active module is normally installed in the front of the frame with a NSM860 rear interface card in the rear. When the NSM860 active module is installed with any other rear interface card, no damage will occur but it may fail to function. When the NSM860 active module is installed in a slot with a NSE1000 rear interface card, it does not function. When the NSM860 active module is installed with a NAM rear interface card, it will operate in Mono only (Left channel input active) (since the rear card will input only a mono audio). The NSM860 acts as a shelf spare to either NAM or NSM applications Page 8-14 Owner s Manual Stratum II Modulation System

115 Chapter 9 How To Operate The NAM Modes of Operation The NAM860 can be set to operate in multiple modes. To successfully configure the unit in the various operational modes, the NAM860 must use the proper rear panel interface card. The table below shows the compatibility of the cards. Rear Panel Interface Normal Operation Backup Condition Notes NAM860 OK OK Full compatibility NAM1000 OK OK Full compatibility NSM860 OK (Refer to notes for conditions) OK Use Left and Right Audio Inputs for Mono. Use Left for BTSC baseband signals (the sound level will 6dB lower but useable) Table 9-1. Rear Panel Interface card compatibility 1.1 Video Modulator and Monaural Audio This is the most commonly used mode of operation. This is the factory default of the unit. Baseband video and narrow band monaural audio (50Hz to 15KHz) are fed to the corresponding inputs, modulated to an IF (VIF and AIF), combined (in the rear panel interface) to create the CIF and finally up converted to a selected channel. 1.2 FM modulator for an external BTSC signal and Upconverter The signals applied to the unit are video and BTSC base-band audio. In this mode the Video Input is 75ohms impedance. The audio is modulated onto the internally generated 4.5MHz subcarrier and made available to the 4.5MHz Out connector. The NAM860 is configured via the front panel user interface setting the IFCW/4.5MHzOUT connector as a 4.5MHz Output. This is an application for baseband scrambling system like Jerrold MVP series. 1.3 Video Modulator and External 4.5MHz Input This is the same as in 1.1 except the audio input and internal audio sub-carrier (4.5MHz modulator) is disabled. The audio sub-carrier is externally generated and applied to the 4.5MHz IN connector. No physical set up is required on the rear panel interface card. Stratum II Modulation System Owner s Manual Page 9-1

116 How To Operate The NAM860 To set the unit in this mode, you must set the unit s Video/Audio Input to BB Video, Ext 4.5MHz using the front panel user interface. 1.4 Video + 4.5MHz Modulator In this mode of operation, the signal applied to the Video IN connector is a combined baseband video and audio sub-carrier (4.5MHz) signal, also known a composite video. Both signals are fed to the video input connector. In the NAM860, the video signal is processed to remove the 4.5MHz sub-carrier by turning on the 4.5MHz trap. This is then fed to the following stages for modulation and up-conversion. As for the 4.5MHz signal path, the video is removed by band pass filtering the sub carrier, then up-converting it to 41.25MHz, and finally to the output channel. In short, the NAM860 pre-processes the composite video signal to a discrete video and 4.5MHz. No physical set up is required on the rear panel interface card. To set the unit in this mode, you must set the unit s Video/Audio Input to Composite Video using the front panel user interface. 1.5 IF Up Converter As an IF up converter, the sections being used in the unit are the IF and RF stages. This mode can be selected by configuring the unit for External CIF while the internal IF generator is muted. The user should apply the source signal to the external CIF IN. Breaking the VIF loop and applying the external CIF signal to the VIF input is another way of connecting the unit as an IF up converter. This method is not recommended due to the possibility of causing signal beat between the internal IF and the external IF signal. In this mode all IF and RF configurable parameters and monitor circuits are used. They are IF AGC, VSB location (CIF or VIF), RF low detection, and RF output level adjustment. The VSB filter will be applied to the external signal only when set for CIF. The VSB filter location is set to the CIF path to reject out of band signal. This filter prevents out of band signals from being up converted and becoming part of the transmitted signal. No special settings are needed in the rear panel interface card. The rear panel interface card can be configured to Internal or External CIF via the front panel GUI. When pairing this unit with an NOP1000, the system will automatically set the NAM860 to this operational mode. Refer to Chapter 6. Page 9-2 Owner s Manual Stratum II Modulation System

117 How To Operate The NAM Front Panel Components The NAM860 module s front panel includes LED channel number display, Alarm LED (red), which is activated on loss of video, audio, and RF. Backup LED is activated when that module is chosen to be used for redundancy or backup. Yellow when in standby mode and Red when Active. Video Clip LED (red) that is activated when the video is being over modulated. Levels: Green LED s vary in intensity relative to audio level for each input but change to red when over-deviating by 1 db Test points on the front panel for an audio test jack, video test port, and a RF test port. CHANNEL OUT ALARM BACKUP VIDEO CLIP AUDIO PEAK AUDIO TEST VIDEO TEST R F TEST 860MHz MONAURAL MODULATOR Figure 9-1. NAM860 Front Panel. Stratum II Modulation System Owner s Manual Page 9-3

118 How To Operate The NAM Rear Panel Components The NAM860 module s rear panel is similar to the NAM1000. It includes 2 Status LEDs. This is a helpful tool to the technician to know the status of a frame or slot without having to go to the front of a unit. Alarm LED: GREEN, when a module is installed and no alarm is detected. RED, which is activated on loss of video, audio, and RF. This follows the front panel alarm. This is OFF when no unit is installed on the front. BU LED: GREEN, when the slot is assigned as a Backup unit and is not activated. RED is when the slot is in active back up mode. OFF is when the slot is not assigned as a backup. 3.1 Jumpers and Setting Video and 4.5MHz IN connector The Video Input can be configured for an input impedance of 75Ω or 10KΩ via internal DIP Switch. Switch SB01 SW1 SW2 SW3 Operational Mode Termination ON OFF ON As a Video Modulator and 4.5MHz FM modulator for BTSC baseband. As a Video + 4.5MHz Modulator OFF ON OFF As a BTSC Baseband 4.5 FM Modulator and Upconverter Video and 4.5MHz IN connector, 75Ω Video and 4.5MHz IN connector Bridged, 10KΩ ON OFF OFF As a Video Modulator and External 4.5MHz Video IN, 10KΩ 4.5MHz IN, 75Ω Table 9-2. SB01 switch settings Setting Audio Impedance The audio input impedance can be set to 600Ω or 10KΩ via switch SA01. Set the switch to ON for 600Ω or OFF for 10KΩ. Page 9-4 Owner s Manual Stratum II Modulation System

119 How To Operate The NAM Installing The NAM860 If you have not done so already: Install rear interface cards into rear slots of the NRF1000 frame where your channel plan dictates. Make certain the NRF1000 is shut-off before installation. Install the NAM860 active module in the front panel slot aligned with the installed NAM860 rear interface cards. For Mono operation, connect audio out and video out from your source to the quick-disconnect audio strip inputs and to the Video In on the rear interface card. For stereo operation, connect the NSE1000 first and cable the NSE1000 outputs (Video and 4.5 MHz subcarrier or wideband audio) to the NAM860. Connect your scrambler, if used, as required by that scrambler. Install IF loop-through for VIF or AIF where not used. 5. Swapping Modules You can swap an NAM860 with the NAM1000 and NSM860 for temporary or normal use. Please check the channel setting (Channel, RF level, audio and video settings) after you swap out a unit. RULE: Anytime you replace the 1000MHz version unit in the slot with an 860MHz unit, the slot channel settings will not be loaded to the replacement unit. Instead, the Subrack (NRF1000) will read the replacement unit channel settings and show the details on the screen. It will immediately set RF MUTE ON. The user must set the new channel settings on the replacement unit. Refer to Chapter 5 4 The limitations are outlined in the table below. Unit in Slot Swapped with Normal Operation Backup Condition Notes or Limitations NAM860 NSM860 OK OK o The NSM860 is set to Mono mode in normal operation and backup condition. o All Channel Settings. These are channel, RF level, video modulation and audio modulation. NAM860 NAM1000 Refer to Notes or Limitation Not Allowed o Channel setup of the replacement unit are used and displayed. o The system will set up the unit with RF MUTE set to ON. o User must check and set channel settings. Table 9-3. Summary of NAM860 Module compatibility. Stratum II Modulation System Owner s Manual Page 9-5

120 6. NAM860 Displays How To Operate The NAM860 Home and Configuration screens are the two principal display screens. They control the operation of the NAM860 modulator module. The top-level NAM Modulator display is shown below. Review the prior chapter for general navigation rules to steer this display. A quick review: From the SysMaster, highlight the frame number list with the Knob, press Enter and select the frame number. Press Enter to display the Frame Controller display. In the Frame Controller display, confirm that the frame number shown is the desired frame, the press the slot button in the vertical column to display the desired slot/module. 6.1 The NAM Modulator Display The NAM Modulator Display shown include status-only fields: Figure 9-2. NAM860 Control Screen. Frame and slot number in upper right. Always confirm whether you are displaying or changing the intended NAM module. Channel number, Frequency plan (EIA/HRC/IRC/Custom), and frequency. These are selected in the NAM Config display but presented here for convenience. Alarms. Displays messages reflecting status of this module. Page 9-6 Owner s Manual Stratum II Modulation System

121 How To Operate The NAM860 Alarm Status OK Operating normally. Shutdown Module power is OFF. PLL unlock IF or RF PLL unlock. RF Level Detected RF level is out of set range in Auto RF ON or Low in Auto RF OFF. Audio Modulation Audio Levels are greater than the threshold. Over Modulation Video over modulation threshold exceeded. Missing Module has been removed from the slot. Dead Module is not responding. HDW (001) Hardware Fault: Tuner module does not exist. HDW (002) Hardware Fault: Tuner not started HDW (004) Hardware Fault: Tuner setup failed. HDW (008) Hardware Fault: Tuner communications failed. Channel name. Displays the contents of the name field of frequency/channel plans loaded into the system via the utility. The cursor starts at the most common activities: Video modulation level adjustment slider Audio modulation level adjustment slider Coarse RF output level entry. o In Auto adjust, the entry is in dbmv from 50 to 62. o In Manual adjust, the entry is a unit less coarse adjustment scale from 1(lowest possible level) to 7 (highest possible level). To set your RF level, change this value to attain an output that is about 1dB from target. Then with the fine level slider, adjust the output the desired level. RF output fine level adjustment slider. This adjusts the level in 0.5dB steps. A/V Ratio level adjustment slider Note that the cursor is indicated by the darkened square slider knob and level indicated by the square s position on the slider line. To edit a level, highlight the desired slider and press the Edit button. Rotate the front panel display knob to move the slider knob. Pressing Edit or any other buttons but Enter will revert back to the last saved value. Pressing Enter will save the changes you have made. (Note: The slider items may be changed in real time, so you may adjust a level and observe the effect without pressing Enter. The unit will continuously remain in EDIT mode until the EDIT or ENTER key is pressed.) Pressing the Next/Prior button will bring the cursor to the following boxes: Stratum II Modulation System Owner s Manual Page 9-7

122 How To Operate The NAM860 Controller. Pressing Enter will move the display up to the Fame Controller display. Mute/Unmute box. Pressing Enter when Mute is highlighted will mute RF output and display Unmute in this box. Shutdown/Startup. Pressing Enter when this box is highlighted will turn the module completely off. Pressing Enter when Startup is highlighted will restart the module from a cold start condition, including all startup checks and communications with the frame. Config. Pressing Enter when this box is highlighted will navigate you to the next NAM screen, the NAM Config screen. 6.2 The NAM Config Display There are three NAM Config screens. In each screens the NAM Config statusonly fields are: Frame and slot number in upper right. Always confirm whether you are displaying or changing the intended NAM module. Frequency. The frequency displayed is the result of selecting a channel plan, the channel and the offset value, and represents the actual output RF frequency. Serial Number located on the second configuration screen. Figure 9-3. First NAM Configuration Screen. There are 5 selectable parameters on the first configuration screen: Page 9-8 Owner s Manual Stratum II Modulation System

123 How To Operate The NAM860 Channel Number. Pressing edit when this field is highlighted and rotating the knob will increase or decrease the channel number. Press Enter to after the selection and the frequency display will change. The RF output will mute and change frequency then unmute (RF will not unmute after channel change if Mute is turned on in the NSM Home menu). Press Edit to terminate editing and revert to the last channel number. Channel Plan Offsets Clamp (video clamping) Video and Audio inputs to be used Audio Bandwidth. Stratum II Modulation System Owner s Manual Page 9-9

124 How To Operate The NAM860 Figure 9-4. Second NAM Configuration Screen. Additional parameters are found on the second configuration screen. CIF Input. Selects either the internally modulated and mixed Composite IF or accepts an external CIF (from a scrambler, for example.) CIF Detect: Set the IF AGC level detection for sync tip or peak. Use sync tip for unencrypted signal. Use peak for encrypted signal. This value holds true when IF AGC is set to ON. VSB Filter. Filtering may be switched from VIF to CIF, to support various scramblers. Most scrambler used VIF but some scramblers from Scientific Atlanta may need to be set up using CIF filtering. The IF AGC select enables or disables the CIF automatic gain control. IF Switch: This sets the shared F connector on the rear panel interface card for either a 4.5MHz output or IFCW output signal. Trap: Set the trap ON if the baseband input at the video is a composite video (video with 4.5MHz). Set this to off if you are applying a normal baseband video. RF Control: When set to ON, the user can adjust the output level in dbmv. When set to OFF, the user sets the level manually and the values entered or shown in the RF control has no unit. Page 9-10 Owner s Manual Stratum II Modulation System

125 How To Operate The NAM860 Figure 9-5. Third NAM Configuration Screen. The third configuration screen has the alarms and masks. When the alarm parameters are set to Off, the alarm flag is masked and inhibiting the alarm flag from being reported. When set to On the alarm mask is removed, allowing for the system to report the alarm. Also, the user has the option to change the delay factor of an alarm. The delay factor is the amount of time (seconds) an alarm status has to occur before the alarm flag is set to 1 or Alarm LED turned ON. RF Level. Pressing edit when this field is highlighted and rotating the knob will select ON or OFF. When set to On, press Next to move the cursor to the fault level field. The value entered in this field is in db and valid only when the RF control is set to ON. Press Edit, change the value using the knob and press Enter to store the value. Video Modulation. Pressing edit when this field is highlighted and rotating the knob will select ON or OFF. When set to On, press Next to move the cursor to the delay factor field. Press Edit, change the value using the knob and press Enter to store the value. Video detect: This sets detect alarm ON or OFF. When ON a video loss will be detected and an alarm flag is set. Audio Modulation. Pressing edit when this field is highlighted and rotating the knob will select ON or OFF. When set to On, press Next to move the cursor to the delay factor field. Press Edit, change the value using the knob and press Enter to store the value. To return up to the NAM Modulator display, either press Enter when the NAM Home is highlighted or press any of the vertical column of module buttons. Stratum II Modulation System Owner s Manual Page 9-11

126 How To Operate The NAM860 Selecting Restore Defaults will set the NAM860 to its factory defaults and erase any user setting. 6.3 NAM Redundancy Take heed on the following rules and conditions that were taken in implementing the redundancy: o o o An NAM860 operating as a regular AMVSB modulator can be assigned as a backup to the NAM860 operating with the NOP1000. An NAM860 can only be assigned to another NAM860 operating as a modulator for back up. Only following NAM860 faults or conditions triggers a backup: o o o RF or IF PLL Unlock Unit removed from slot Shutdown Page 9-12 Owner s Manual Stratum II Modulation System

127 1. OBJECTIVE OF REDUNDANCY Chapter 10 Redundancy Overview Today s cable customer expects uninterrupted delivery of video services and will become dissatisfied when television service is interrupted for more than a fraction of a second. The Stratum II focuses on satisfying these demanding customer and introduces a PRIORITY REDUNDANCY design for redundancy within a frame to allow you to maintain the more valuable and/or most watched television services in the event of multiple module failures. You may elect to operate with all modules active and on-air with no backup modules, and drop the less valued television services in the event of a failure. 2. REDUNDANCY MODES Redundancy within a single 8-slot frame is included in every frame. This allows for redundancy from 1:1 up to 7:1 redundancy (7 on-air active channels and 1 hot standby), or for 8:0 redundancy, where there is no standby module and one or more failures will drop the television service(s) in the order you select. Using the Redundancy loop-through card in your frames will allow you to operate with redundancy between frames. With proper layout, this may extend the redundancy factor up to 1:40. For redundancy between frames, command signals are carried via IP and Ethernet cabling must be in place. See Chapter 4, Section 7, Network Addressing. 3. WHY DOES REDUNDANCY AFFECT MY PLANT LAYOUT? 3.1 How does Redundancy operate? Redundancy is accomplished by switching the inputs (and outputs, in case of the NSE1000) of a particular module s rear interface card into a mid-plane. In normal operation, the signals are fed directly through the mid-plane from rear interface card connectors to the active primary module in the front portion of the chassis. Any baseband and IF signals are fed back through the midplane in normal operation and output on the rear interface connectors. In backup mode, the signals that are input from your headend wiring are transferred onto the midplane and routed to the backup module. The operating configuration of the module is to be taken off-line is transferred to the backup module, the backup module brought on-line and un-muted. The signals from the backup module (video audio and IF) are routed onto the midplane. Stratum II Modulation System Owner s Manual Page 10-1

128 Redundancy Overview The signals to be output are taken from the midplane at the same location as the primary module and placed on the rear interface card connectors and into your plant cabling as if the primary module remained in operation. This automatically handles the IF signals to and from scramblers installed on the module taken out of service. As an example, within a frame, you may have a backup modulator in slot 8 in standby mode. If the modulator in slot 2 fails, the frame controller will mute slot 2 and reconfigure slot 8 to the same characteristics. The inputs from slot 2 will be routed to slot 8, and the IF signals from slot 8 routed to the interface card in slot 2, output to a scrambler if installed, and the IF loop-through routed from the connector on slot 2 to slot 8 to allow for normal operation. Redundancy between frames is similar, and treated as if the Redundancy Interface card is a ninth slot on the midplane. Inputs for any of the frame s rear interface cards can be routed to the Redundancy Loop-through module, where it is routed out of the primary frame, looped through other frames until it is received at the frame where the backup module is located, then routed onto the midplane of this frame and into the backup active module. Signals are likewise sent back to the primary frame, onto the midplane and output via the primary slot s rear interface card. Despite the complexity, muting of the failed module, reconfiguring the backup and un-muting takes well less than a second. 3.2 Controls in Active Backup On an active back up condition, the user interface panel of the backup unit will be updated with the interface, configuration and set values of the faulty unit. The controls are limited to the level adjust only, configuration changes is not allowed. The set levels can be changed to a new value and are only retained during the back up condition. Once the faulty unit is replaced, the original set values are used to configure or set the unit. 3.3 RF combining issues may affect installation planning The RF output of the modulator is NOT fed onto the backplane and routed, in order to optimize signal quality. In a typical installation where a frame s RF outputs are combined for a signal to feed one plant, there is no issue. If you are using the Stratum II RF outputs to feed two or more regional plants from one master headend, you must assure the backup modulator(s) RF output is input to a combiner that is included in the same regional signal. As in the example, above, you may have a backup modulator in slot 8 in standby mode. If the modulator in slot 2 fails, the frame controller will mute slot 2 and reconfigure slot 8 to the same characteristics. The inputs from slot 2 will be routed to slot-8. Please note that the RF output will be from the slot where the standby module is located. For example, if slot 2 was set to output channel 36, that slot s F connector will mute and the backup unit s F connector will un-mute with channel 36 on it. When using redundancy within a frame and the optional 8:1 combiner is installed, the RF output combining is, of course, not an issue. Page 10-2 Owner s Manual Stratum II Modulation System

129 Redundancy Overview 3.4 Physical layout affects Redundancy grouping For redundancy planning, you may wish to make redundancy groups. You may wish to backup a Special event Pay-per-view channel with 1:1 (one active is to one standby module). Premium movies channels may be backed up at 3:1, others at 7:1. Basic tiers may be backed up at, as an example, 24:1. Whatever your level of redundancy, the modules need to be physically grouped to allow signal connection along the midplane to support that group Layout first rule of thumb: If there are blank slots in a frame, place them at the rightmost (from front) slots. Do not include them in the middle of a redundancy group. When a blank rear interface card is placed in a slot, the ability to transfer signals around that slot is interrupted. An example of bad layout would be to have 5:1 redundancy in a frame with modulators in slots 1, 2, 3, 6 and 7. Good layouts would be slots 1, 2, 3, 4, 5 filled. Another example of acceptable layout would be slots 1, 2, 3, 4 filled with modulators (as one redundancy group), slot 6 empty and slots 7, 8 filled with stereo generators (as a second redundancy group) Layout second rule of thumb: Group the modulators together and the stereo generators together in different frames. Although a specific slot will contain the primary NSE1000 that is associated with a specific channel s primary NAM1000 and will be wired on the rear panel with associated audio, there is no communication required on the midplane to support redundancy with regard to stereo audio. An example of this rule would be to put 8 modulators in a 7:1 redundancy group in one NRF1000 frame and the eight stereo generators supporting these channels in another frame. The video and audio inputs would go to the NSE1000. The NSE1000 subcarrier (or wide band audio) and the video loop-through will be wired any modulator in the frame with the modulators. If the active NSE1000 in slot 2 fails, the audio will be routed in frame #2 to the backup NSE1000 and the stereo output routed to the slot 2 outputs that are connected to the rear panel of frame #1. The modulator is unaffected. If the active modulator in slot 3 fails, the stereo signal from the NSE1000 in frame is wired to slot 3 inputs and is routed on frame #1 midplane to the backup modulator. The stereo generator is unaffected. In the unlikely event both fail, each frame would involve the routing needed to support the backup of both stereo generator and modulator. Note that one frame of stereo generators can be cabled with the output to more than one frame of modulators. If you have a system that about 25% stereo channel, put 24 channels of modulation in three frames, and 8 stereo generators in one frame with the stereo outputs wired as needed to the modulation slots. Stratum II Modulation System Owner s Manual Page 10-3

130 3.4.2 Layout third rule of thumb: Mount modulators at one end of a frame, stereo generators at the other. Redundancy Overview When mixing modulator and stereo generators within a single frame, it is best to physically install redundancy groups together. If modulators are 1:1, for example, the active and standby should be physically installed together. In a frame with four active modulators, one standby modulator, two active stereo generators and one standby stereo generator, the modulator should be at one end and the stereo generators at the other. In this example, any one of the five modulator slots can route its signal onto the midplane and any of the five slots could be the backup that takes the signals off the midplane. Any one of the three slots with stereo generators could put its signals on the midplane and any other could take it off. The midplane will be isolated so that slot 1 modulation signal are routed to slot 5, for example and, at the same time, slot 6 stereo signals are routed to slot 8. If the backup modulator for slot one was in slot-eight, the midplane would not be able to route the stereo signals at the same time. Please note that redundancy between frames requires that you use the midplane to route signals from the slot where failure occurred to the end of the frame where the redundancy loop-through card is installed. The cabling from one frame to the next may be viewed as an extension of the midplane to allow access to the backup module in another frame. If the midplane is routing signals from slot 3 to the frame with the backup, the frame cannot also route signals from another slot at the same time. 4. Redundancy and EAS Emergency alert signals are supported on the midplane and managed by the redundancy controls. In the same fashion that input and IF loop-through are routed to a backup modulator, the EAS input is routed to all slots, including to the back up modulator. Cross reference the comments on RF outputs above, otherwise no special precautions, installation grouping or cabling need be in place for EAS operation with redundancy. Page 10-4 Owner s Manual Stratum II Modulation System

131 1. Overview 2. Installation Chapter 11 Using Stratum II Utility The utility provided with the Stratum II system allows the user to control the system via the local area network using the SNMP service. The software has been designed so that the user is able to install to a PC and immediately control the Stratum II system without the need of MIB table. This utility will also allow the user to update the firmware of all Stratum II components. 2.1 Minimum requirements Operating system: Windows NT, 2000 or XP. PC: Pentium III minimum RAM: 120MB 2.2 PC Set up The SNMP service on your PC must be enabled under Windows in order for the utility to work correctly. SNMP service is NOT typically installed during Windows installation. To install SNMP, click START, SETTINGS, CONTROL PANEL. Click on ADD/REMOVE PROGRAMS, and then click on ADD/REMOVE WINDOWS COMPONENTS. In the Windows Components Wizard window, click on MANAGEMENT AND MONITORING TOOLS. (If you highlight MANAGEMENT AND MONITORING TOOLS and click on the DETAILS button, it will show SIMPLE NETWORK MANAGEMENT PROTOCOLS.) Click on the box to select either, and then click NEXT>. Windows will ask for the Windows Installation CD ROM (or the Restoration CD ROMS on PC with pre-installed systems); follow Windows dialogue box directions. If you are installing the utility into a system with XP Service Pack 2, you need to setup the firewall to allow the SNMP ports 161 and 162 to freely pass through. Please refer to for setup instructions Firewall Setup: a. Go to Control Panel b. Click on the Firewall icon c. Click on the Exceptions tab d. Click on the Add Port button Stratum II Modulation System Owner s Manual Page 11-1

132 e. Name: SNMP Service; Port: 161; check the UDP box; click OK f. Click on the Add Port button g. Name: SNMP Traps; Port: 162; check the UDP box; click OK h. Click OK 3. Initial Set Up 3.1 Ethernet Stratum II Utility The utility uses the Ethernet and RS232 communications port for control and firmware update of the NRF1000 or modules. Make certain proper communications port settings and network connections are done before use. Also, make sure you have assigned the Ethernet addresses to all the NRF1000 connected to the network via the 2 rear panel rotary switches. Refer to Interconnecting Frames and Network Addressing for more information in Ethernet connection and addresses. Select the (down arrow) to view the network configuration fields. Enter the System Subnet, Subnet Mask and Gateway addresses. Select (Up arrow) to hide the configuration fields. Figure Network configuration. It is recommended that the Computer be in the same System subnet as the Stratum II. Page 11-2 Owner s Manual Stratum II Modulation System

133 Stratum II Utility 3.2 RS232 Connect a cable to the DB9 Male connector and select the correct communications port. 4. Setting Up Slave Units with the Utility You can set up a Slave configure NRF1000 using this utility. Enter the network configuration and select Configure Slave Devices. Set a unique address for each NRF1000 frame (Slave or master) on the frame rear panel. Refer to Network Display And Addressing. Power up the slave units, the units will start looking for a master controller or the utility. The controller will listen for the un-configured slave unit and automatically enter the network configuration information. Within ½ minute to a minute, you should see the System Status Table getting filled with all the NRF1000 slave units. Once all units are displayed on the status table, the configuration process is complete. If you select the System Icon, you should see all the NRF1000 units as a branch of the System Icon. You can leave Configure Slave Device check box selected or de-selected. Stratum II Modulation System Owner s Manual Page 11-3

134 5. Firmware Update Stratum II Utility Updates of the firmware can be done via the Ethernet and Serial communications port. UPDATING THE FIRMWARE WILL CAUSE AN INTERRUPTION OF SERVICE. It is recommended that you have the units out of service before doing the file upload. 5.1 Via Ethernet The Ethernet port has a higher data communications rate and therefore, is the preferred method of updating the firmware. The user interface screen is shown in Figure Figure Firmware updating screen via Ethernet. As shown on the Loader Via Ethernet screen, Ethernet has the capability to update the NRF1000, NAM1000, NSE1000, NSM860 and NAM860 firmware. These facilities are not available in the Serial Communications (RS232) screen. Select the location of the file for the corresponding module type. When uploading for the NAM type modules, note that you need to select the 1000 or 860 radio button to set the module type. Page 11-4 Owner s Manual Stratum II Modulation System

135 Stratum II Utility Updating the Modules a. Verify that you are communicating with the system before you proceed. Refer to 6.1. b. Determine what module requires a firmware update. c. Select LOADER radio button and Via Ethernet folder tab. You should see the screen in Figure d. Set the location of the latest firmware file by selecting File Source button. e. Determine the three-digit address (last 3 digits of the IP or the HEX switch setting) of the unit you are to update. If you are updating the Modules (NAM1000, NSE1000, NSM860 or the NAM860), note the address of the subrack they are contained in. f. Enter the address in the subrack address field. g. Press Load to send the file to the subrack. h. File transfer or update is done when the NRF1000 frame controller forces a module restart. You do not need to recycle power. i. Verify the correct version is loaded using the remote control interface Updating the NRF1000 frame To update the firmware: a. Verify that you are communicating with the system before you proceed. Refer to 6.1. b. Determine what unit requires the firmware update. c. Select LOADER radio button and Via Ethernet folder tab. You should see the screen in Figure d. Set the location of the latest firmware file by selecting File Source button. e. Determine the three-digit address (last 3 digits of the IP or the HEX switch setting) of the unit you are to update. If you are updating the Modules (NAM1000, NSE1000, NSM860 or the NAM860), note the address of the subrack they are contained in. f. Enter the address in the subrack address field. g. Press Load to send the file to the subrack. h. The firmware will be sent to the NRF1000 via our proprietary communication protocol. Currently, it will require a little over 2,000 packets to send the whole firmware file. The current status will be displayed on the bottom of the utility in terms of number of packets sent. i. After the last packet is sent, one of two messages will appear on the utility: 1) Firmware uploaded, or 2) Frame reported a CRC error. Stratum II Modulation System Owner s Manual Page 11-5

136 Stratum II Utility j. If the Firmware uploaded message appears on the utility, the received file passed the CRC check. DO NOT RECYCLE POWER AT THIS TIME. The NRF1000 will try and program the internal flash chips. k. Programming for the flash should be less than 30 seconds. l. When the flash programming is completed, a status screen will be shown quickly. After this screen is shown, it will go back to the Frame Controller screen. This means that all is well, and the power to the NRF1000 should be recycled. m. If the Frame reported a CRC error message appears, the uploaded file did not pass the CRC check, and the Frame will not try to program the flash. In this case, the user will have to reload the file to the Frame. Step g. Page 11-6 Owner s Manual Stratum II Modulation System

137 Stratum II Utility n. If, during the actual programming of the flash chips, a failure occurred, a new warning message screen will appear. It will try to reprogram the flash chips twice. If the second reprogramming failed, this screen will remain on the front panel GUI. The user will have to try and reprogram the flash chips via the serial port (using the bootloader code). o. After reprogramming the flash chips, the data stored in the Flash will be CRC checked. If this fails, a new warning message will appear on the GUI. Please see file: WarningMessage4.bmp. This message could result in a problem with RAM, or something during the programming of the chip. In any case, if this message appears, the user will have to reprogram the flash chips via serial port (using the bootloader code). Stratum II Modulation System Owner s Manual Page 11-7

138 Stratum II Utility p. During programming of the flash, the supervisor task in the frame will suspend all network activity, front panel button control, along with module polling. So, with this in mind, when re-programming a slave device, a user can determine if all went well by waiting roughly seconds, and then try establishing network communications with that Frame using the utility (system screen). If the user can communicate with the Frame (such as querying it), then the programming went well. q. If programming did not go well (for any type of NRF1000), the user will have to attach a serial cable to the rear of the NRF1000, and use the utility (upload via Serial screen) to upload the same file. Verify that the utility serial screen (window into the serial port) shows that the CRC check failed for the runtime code. If it doesn t, and the bootloader tries to start the firmware, the user will have to force the NRF1000 into boot (by pressing the two buttons). r. Verify the correct version is loaded using the remote control interface or the front panel display. 5.2 Via Serial Port (RS232) This connection is a second means of updating only the NRF1000 firmware. This is especially useful if you do not have Ethernet connection the NRF1000 and you need to update the NRF1000 firmware. It is also used for those instances when the firmware was completely corrupted and the NRF1000 only runs in boot. Update via RS232 ports can only be done on an NRF1000 that have the display panel (Master frames). Updates of units without the display panel can only be done via Ethernet. Page 11-8 Owner s Manual Stratum II Modulation System

139 Stratum II Utility Figure Firmware updating screen via RS232. To update the firmware: a. Determine which unit requires the firmware update. b. Select LOADER radio button and Via RS232 folder tab. You should see the screen in Figure c. Select the communications port. d. Set the location of the latest firmware file by selecting File Source button. e. Power down the NRF1000. f. While keeping Edit And Enter buttons pressed, power up the unit. Wait for 2 seconds. g. Press Load to send the file to the subrack. h. When a Firmware Uploaded message is shown on the lower the screen, press Run Software. i. Verify the correct version is loaded using the remote control interface or the front panel. Stratum II Modulation System Owner s Manual Page 11-9

140 6. System control Stratum II Utility The system control screens allow you, the user, to operate and monitor the Stratum II system using the Ethernet port and the SNMP service. In order to properly use the utility, the user must have the proper computer rights to the SNMP service. The system control has the following features and functions: 6.1 Getting Started o o o o o o o o Control of all module type (NAM1000, NSE1000, NOP1000, NSM860, NAM860). Control of the NRF1000. Status monitoring of the Stratum II system. Back up set up. Back up set up query. Acts as a master frame to control and set slave frames. Stratum II Channel Vs Channel name database editor. Tree and branch view of Stratum II system. After setting the proper network configurations, select the System radio button. You will be presented with the screen shown in Figure 11-4 Enter the range of subrack address for your system in the Start and End Query fields to query a range set of NRF1000 frame. This field accepts a value of 001 to 254. To query only a single NRF1000 frame, enter the same address number in the Start and End Query fields. A sample of a Query result in shown in Figure Note that the left pane shows the frame address in a sequential order and in a Tree/branch format. If a new frame is added into the system after the initial query, that frame will be added to the end of the list. Selecting the System Icon on the tree will collapse or expand the tree at the same time refresh or display the System Status table The right pane of the screen has 3 folder tabs. The Status, User Channel Plan and Channel Name. Page Owner s Manual Stratum II Modulation System

141 Stratum II Utility Figure Initial system screen. 6.2 System Status The initial display shown in this after a query, the summary status of all the NRF1000 frames and the module it contains. The characters/symbols in the cell are defined below. Module Status Operating normally Blank Empty Slot B A X M Backup Active Alarm Condition Shutdown Module type mismatch These symbols/characters in the table are also defined at the bottom of the right pane. Stratum II Modulation System Owner s Manual Page 11-11

142 Stratum II Utility 6.3 User Channel Plan Figure Status screen after the Query. This screen allows you to build a special Channel Vs Frequency plan for your system. This is especially useful for those systems that have special offset frequency requirements. There are limits as to how far you can change the frequency. The smallest frequency step size can only be set in increments of 12.5KHz up to a maximum of +/-50KHz. It is recommended that you start with a base channel plan by selecting Default button. This loads the STD channel plan into the table. You can then edit this to your requirements. The NRF1000 stores a separate user channel plan for the NSM860 and for the NAM1000. If you have a mix of NSM860 and NAM1000 (860MHz and 1000MHz) units, you must build a plan for each one and load it into the NRF1000. To build an 860MHz plan, select the 860MHz button and enter the frequency for each channel. Select the 1000MHz button to build the 1000MHz channel plan. Page Owner s Manual Stratum II Modulation System

143 Stratum II Utility Figure User Channel Plan Once completed, save the file in the PC for future retrieval or use by selecting the Save To File button. Refer to Figure To retrieve the saved file, select Retrieve from File Button. Figure Saving the User channel plan to a directory. Stratum II Modulation System Owner s Manual Page 11-13

144 Stratum II Utility You can now save this file into the NRF1000 frame by selecting Save to Frame button. This opens up a dialog box for you to enter the NRF1000 frame address to which you save the file. Refer to Figure Figure Frame number entry field. You can also retrieve the saved file from the NRF1000 by selecting the Retrieve From Frame Button. The software will again request you to enter the Frame number. You can use this file to load as many frames as you wish. You will have to go through the process of selecting the Save to Frame button and entering the frame number for each frame you wish to have this loaded. In order for this file to be useable, you must recycle the power to the NRF1000 frame. Page Owner s Manual Stratum II Modulation System

145 Stratum II Utility 6.4 Channel Vs Channel Name In this folder tab, you can build, save, edit and load a relational database of your system s channel line up. That is the Channel number Vs channel name database. Figure Channel Vs Channel Name. To start building your own channel name database you can select Clear Table to erase all entries and start entering the channel names in each channel slot. Save the File into the PC once complete. Select Save to File. You can later retrieve this file by select Retrieve From File Button. You can now save this same file to the NRF1000 frame by selecting the Save to Frame button. This opens up a dialog box for you to enter the NRF1000 frame address to which you save the file. You can use this file to load as many frames as you wish. You will have to go through the process of selecting the Save to Frame button and entering the frame number for each frame you wish to have this loaded. In order for this file to be useable, you must recycle the power to the NRF1000 frame. Stratum II Modulation System Owner s Manual Page 11-15

146 Stratum II Utility Figure Save Channel name Vs Channel Number to File. 6.5 Frame Status Selecting the Frame icon will show you more NRF1000 frame details. You will find a table containing the status of each slot, module type, channel number, serial number and the channel name and additional information on the backup configuration. Figure Frame status screen. Selecting the +/- next to the Frame Icon collapses or expands the tree. Page Owner s Manual Stratum II Modulation System

147 Stratum II Utility The Backup Config folder tab allows the user to define the location of the back up unit for the selected slot. The display in Figure shows an example of this. In this example, slot 1 has a backup unit located in slot 2 of frame 215 (within the same frame). This means if slot 1 channel ever fails, slot 2 would take over and output slot 1 channel. You can assign a slot to be a backup of multiple units. Having this capability means a possible conflict between 2 faulty units. Priority assignment helps mitigate this case. The assigned priority tells the system which channel has a higher priority and which of the 2 faulty channels will be in service. In cases where a lower priority channel is currently being backed up and a higher priority fails, the priority level dictates that and the higher priority channel takes over. The higher the priority number (1 ~ 255.) the higher is the priority. Setting the same priority in all channel slots meant the priority is First Failure First Serve basis. Figure Frame status and Back up slot monitor. The Back up Slot Monitor allows you to check the backup unit. It provides you a report of the locations of the units it is suppose to backup at the time of failure. The example above (Figure 11-12) shows slot 6 is backing up 3 slots in the same frame. Stratum II Modulation System Owner s Manual Page 11-17

148 6.6 Module Interface Stratum II Utility In this section, we will cover the controls that are unique in this utility and are not found in the NRF1000 display. Each module that fits the NRF1000 has its own user interface. The user interface is a reflection of the NRF1000 user interface front panel display. You can access the various interface panels by selecting the icon shown as a branch of the selected NRF1000 frame. Selecting the module, the icon switches over to a hand holding a remote control. This icon tells you that you are viewing or controlling the slot. AMVSB Modulator (NAM1000) Off air Processor (NOP1000) BTSC Stereo Encoder (NSE1000) AMVSB Modulator/Stereo Encoder (NSM860) AMVSB Modulator (NAM860) Viewing/Controlling selected slot. Figure NRF1000 frame branch icons. Page Owner s Manual Stratum II Modulation System

149 Stratum II Utility NAM1000 Please refer to 5-3 for more information on the NAM1000 controls. o Changing Channel You can change the channel by selecting the UP/DOWN arrow. Or highlight the channel number, enter the new channel number and then press Return. Figure NAM1000 interface screen. o Channel Name This field is a status and entry field. This reflects the channel name of the module that is currently viewed. To update the channel name, edit the text in this field then press Return. Pressing return sends the channel name to the module. You should consider updating your Channel Vs Channel Name database once this is done. o Get Values This button is provided for troubleshooting purposes only. The temperature shown is the temperature of the NAM1000. Stratum II Modulation System Owner s Manual Page 11-19

150 Stratum II Utility NOP1000 Please refer to 6-3 for more information on the NOP1000 controls. o Changing Channel You can change the channel by selecting the UP/DOWN arrow. Or highlight the channel number, enter the new channel number and then press Return. Figure NOP1000 Interface screen. o Channel Name This field is a status and entry field. This reflects the channel name of the Upconverter that is paired with. In this example, we are using an NAM1000 as the upconverter. To update the channel name, edit the text in this field then press Return. Pressing return sends the channel name to the module. You should consider updating your Channel Vs Channel Name database once this is done. o Get Values This button is provided for troubleshooting purposes only. The temperature shown is the temperature of the NAM1000. The use of the NSM860 is not complete at the time of this writing. Page Owner s Manual Stratum II Modulation System

151 Stratum II Utility NSE1000 Please refer to 7-4 for more information on the NSE1000 controls. o NSE Channel This field is provided so that you can enter the channel number this particular stereo encoder is paired with. o Get Values This button is provided for troubleshooting purposes only. Stratum II Modulation System Owner s Manual Page 11-21

152 6.6.3 NSM860 Please refer to Chapter 8 for more information on the NSM860 controls. Stratum II Utility Unlike the other modules, the NSM860 has 2 folder tabs. The controls tab has most of frequently used controls while the options tab have the configuration controls. o Changing Channel You can change the channel by selecting the UP/DOWN arrow. Or highlight the channel number, enter the new channel number and then press Return. Figure NSM860 Controls interface. o Channel Name This field is a status and entry field. This reflects the channel name of the module that is currently viewed. To update the channel name, edit the text in this field then press Return. Pressing return sends the channel name to the module. You should consider updating your Channel Vs Channel Name database once this is done. Page Owner s Manual Stratum II Modulation System

153 Stratum II Utility o Get Values This button is provided for troubleshooting purposes only. Unlike the NAM1000, this module does not have the temperature monitor. Figure NSM860 Options interface. Stratum II Modulation System Owner s Manual Page 11-23

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