AM IBOC Exciter. Technical Instruction Manual. Document: AM_IBOC-MANUAL. Issue:

Transcription

1 AM IBOC Exciter Technical Instruction Manual Document: AM_IBOC-MANUAL Issue: Status: Preliminary

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3 Nautel Limited Peggy s Cove Road Hackett s Cove, NS Canada B3Z 3J4 Phone: or Toll Free: NAUTEL ( ) (Canada & USA only) Fax: Nautel Inc. 201 Target Industrial Circle Bangor, Maine USA Phone: Fax: Customer Service (24 hour support) (Canada & USA only) (International) support@nautel.com Web: The comparisons and other information provided in this document have been prepared in good faith based on publicly available information. The reader is encouraged to consult the respective manufacturer's most recent published data for verification. Copyright 2009 NAUTEL. All rights reserved.

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5 Table of contents Contents Release control record About this manual vii ix Description 1-1 Overview 1-1 Physical requirements 1-3 Cooling requirements 1-4 Pre-installation tasks 2-1 Parts and tools 3-1 Parts supplied by Nautel 3-1 Parts not supplied by Nautel 3-1 Unpacking 4-1 Connecting the AM IBOC Exciter 5-1 Quick setup procedure 6-1 Starting the AM IBOC Exciter 6-2 Setting the carrier frequency 6-3 Setting the IP address 6-3 Configuring presets 6-4 Calibrating mag/phase delay and dc offset 6-5 Page v

6 Table of contents Remote interfacing 7-1 Operating 8-1 User interface 8-2 Main menu 8-6 Select preset 8-7 Edit settings 8-7 View status 8-23 Troubleshooting 9-1 LED indications 9-2 Network related alarms 9-4 Audio related alarms 9-4 Checking cable connections 9-5 Parts information 9-6 List of terms 10-1 Page vi Issue

7 Release control record Issue Date Reason Initial release of manual Incorporated Engineering review edits Updated Section 6: Quick Setup Procedure Incorporated Customer Service review edits Table 7.1: Corrected Day/Night pin assignments Section 9: added Figures 9-5 and 9-6 for the AM IBOC exciter interface PWB Issue Page vii

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9 About this manual This manual provides information about installing, operating and troubleshooting an AM IBOC Exciter. This manual is intended for use by field technicians and site managers. Using this manual Read the task list provided in Section 2, Pre-installation tasks on page 2-1. The task list describes the preparations you must make prior to receiving and installing the AM IBOC Exciter. Later sections of this manual provide reference information regarding physical, cooling, LAN, and synchronization requirements. Features of this manual This manual contains a number of useful features: Online (PDF files) Click on blue text (hyperlinks) to jump to a related section or get additional information (for example, to view a definition of a term). To find keywords, use Find in Acrobat Reader s Edit menu. To quickly find a specific section, click the section in the PDF file s Bookmarks list. Printed To find a specific term, go to Section 11, List of terms on page Online resources The Nautel website provides useful resources to keep you up to date on your AM IBOC Exciter. Nautel User Group (NUG) The website includes a special section that customers can log into in order to access the Nautel customer newsletter, product manuals, frequently asked questions (FAQ), information sheets, and information about field upgrades. Issue Page ix

10 Online documentation The website s NUG section provides online access to all the documentation for your AM IBOC Exciter. Documentation is provided in Acrobat (PDF) format. You can use the documentation online or print the sections that you need. Page x Issue

11 Description Section 1: Description This section provides a description of the AM IBOC Exciter. Overview Physical requirements - see page 1-3 Cooling requirements - see page 1-4 Overview The AM IBOC Exciter is a companion device for the Exporter Plus when installed in certain Nautel AM broadcast transmitters (XR, XL, Jazz and some ND series). The AM IBOC Exciter s primary functions are: modulating IBOC data received over an Ethernet connection from the Exporter Plus. generating Magnitude and Phase outputs on two sets of RJ45 connectors, one set for a daytime transmitter and one for a night-time transmitter. (when properly configured) producing an RF output for a linear transmitter. The AM IBOC Exciter can accept an analog audio input (balanced or AES/EBU format) and be configured to operate as an analog AM exciter. It can also changeover to an audio input, via a backup preset feature (see Program source changeover on page 1-2). There are six programmable presets, two of which that can be configured for selection by the remote day and night inputs. Each preset has options for setting various parameters including program source, mag/phase delay and dc offset. The AM IBOC Exciter front panel has a convenient user interface consisting of an LCD graphic display, keypad and LEDs to indicate operational status. All connections are made to the back panel. Refer to Figure 1.1 on page 1-2 for a typical AM IBOC Exciter configuration. Issue Page 1-1

12 Description Figure 1.1: Typical AM IBOC Exciter configuration Alternate Program Source Analog Audio Digital Audio Exporter Plus Ethernet AM IBOC Exciter Magnitude Phase Transmitter (XR, XL, ND, J1000) Program source changeover The AM IBOC Exciter can be set up to switch to a backup audio source in the event of a fault with the Exporter Plus or with Exporter Plus communications. Any preset can be configured to automatically switch to another preset under the following conditions: 1. HD data is lost 2. HD data is OK 3. audio input is silent In a simple, single transmitter system, two presets can be configured - one for HD operation (standard) and one for analog operation (backup). The HD preset is configured to change to the analog preset if condition # 1 occurs. Similarly, the analog preset is configured to change to the HD preset if condition # 2 occurs. Condition # 3 is useful if the system is operating as analog only, with two audio inputs - one primary and one backup. In a day/night configuration, there needs to be two day presets and two night presets. One of each of the day and night presets is for HD operation and the other is for backup analog operation. Note that remote inputs for day/night operation should be assigned to each HD preset. Page 1-2 Issue

13 Description Physical requirements Figure 1.2: AM IBOC Exciter Dimensions The AM IBOC Exciter is a rack-mountable unit with the following dimensions: Height: 1U, or 4.4 cm (1.75 inches) Width: 48.3 cm (19 inches) Depth: 63.5 cm (25 inches) Clearances Ensure that the clearances at the front and the rear of the AM IBOC Exciter's host cabinet allow sufficient room for easy installation and operation. Allow at least 1U (1.75 inches) of clearance above the AM IBOC Exciter for adequate ventilation. There are no clearance requirements for the space on either side of the AM IBOC Exciter. CAUTION: Do not block the vents in the top cover. This is especially important in higher ambient temperature environments. Weight The AM IBOC Exciter weighs approximately 15 lbs (6.8 kg). Issue Page 1-3

14 Description Cooling requirements The maximum chassis temperature of the AM IBOC Exciter must not exceed 50 C (122 F). To satisfy this requirement: Do not allow the AM IBOC Exciter room ambient air temperature to exceed 30 C (86 F) at sea level. De-rate 3ºC (5.4ºF) per 500 m or 2ºC (3.6ºF) per 1,000 feet above sea level. Example: At 1,600 m (1 mile) above sea level, maximum ambient temperature should not exceed 20.4 C (67 F). Cooler temperatures are recommended, in order to improve the reliability of the AM IBOC Exciter. Do not install the AM IBOC Exciter next to other warm equipment. Page 1-4 Issue

15 Pre-installation tasks Section 2: Pre-installation tasks This section provides a list of tasks that you must perform prior to delivery and installation of the AM IBOC Exciter. CAUTION: FAILURE TO COMPLY WITH RECOMMENDATIONS MAY VOID YOUR MANUFACTURER S WARRANTY. FOR MORE INFORMATION, REVIEW YOUR WARRANTY DOCUMENTS. 1. Select a location for the AM IBOC Exciter at the transmitter site. Ensure the AM IBOC Exciter is near a standard V ac power outlet. 2. Prepare the network (LAN) connection between the AM IBOC Exciter and the Exporter Plus. Consider the AM IBOC Exciter's location and the amount of other networked equipment at the transmitter site. 3. Consult your network manager for IP address information for the AM IBOC Exciter (Exgine), Exporter Plus, and gateway. 4. Order any accessories or optional equipment that you may need. See Section 3, Parts and tools on page Train your station technicians and operators on the use of the AM IBOC Exciter. For a list of available technical and user documents, see Online resources on page ix of this document. For information about Nautel training courses, go to the Nautel website at Issue Page 2-1

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17 Parts and tools Section 3: Parts and tools This section describes parts associated with the AM IBOC Exciter, and tools needed during installation and routine operation. Parts supplied by Nautel Ac power cable An ac power cable is included with the AM IBOC Exciter. Documentation See Online resources on page xi. for documents provided with the AM IBOC Exciter. Parts not supplied by Nautel Nautel does not supply some parts and materials required to complete installation. The parts you need vary with the installation requirements. The list of parts you normally provide yourself during installation include: 19-inch cabinet space (optional) Spectrum analyzer Digital multimeter (DMM) Issue Page 3-1

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19 Unpacking Section 4: Unpacking To install an AM IBOC Exciter, perform the following tasks: 1. Unpack the AM IBOC Exciter from its shipping box. Make sure that you received all the components check your packing list. 2. Remove the AM IBOC Exciter s top cover, then remove any packing material, particularly above the CPU. Make sure that there are no loose components, and that all connectors and PCI cards are properly seated. 3. Install the AM IBOC Exciter at the transmitter site in the cabinet space you have prepared. Provide adequate support at the bottom of the AM IBOC Exciter. 4. Do not connect ac power to the AM IBOC Exciter at this time. Issue Page 4-1

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21 Connecting the AM IBOC Exciter Section 5: Connecting the AM IBOC Exciter This section describes the interconnection between the AM IBOC Exciter, Exporter Plus, UPS and associated transmitter. A typical configuration is illustrated in Figure 5.2 (on page 3-3). Make the following connections: Ac and UPS Power Connections Use standard V ac 60 Hz line cords. A line cord (Nautel Part # JN25) that can accommodate 120 V ac operation is provided with the AM IBOC Exciter. Exporter Plus Link Ethernet Connection Use the CAT5 Ethernet cable provided with the Exporter Plus to connect to the LAN RJ45 connector. Magnitude Output Use a CAT5 cable (Nautel Part # UA81, provided in the AM IBOC Exciter s ancillary kit) to connect the MAG RJ45 connector to the associated transmitter. Phase Output Use a CAT5 cable (Nautel Part # UA81, provided in the AM IBOC Exciter s ancillary kit) to connect the PHASE RJ45 connector to the associated transmitter. Backup Program Source Connections As required, Use the AES/EBU AUDIO or ANALOG AUDIO XLR connector, and associated XLR cable (Nautel Part # , provided in the AM IBOC Exciter s ancillary kit), to accept a backup program input from a separate audio source. 10 MHz Connection If the 10 MHz sync signal is not provided over the LAN connection to the Exporter Plus, use the 10 MHz IN BNC connector to accept the Exporter Plus 10 MHz output. 1 PPS Connection If the 1 PPS signal is required, use the 1 PPS IN BNC connector to accept the Exporter Plus 1 PPS output. Station Interface Use the 8-position terminal block (below the LAN connector) to connect remote inputs and outputs to the AM IBOC Exciter (see Section 7, Remote interfacing on page 7-1 for remote connection details). An 8-pole mini-plug (Nautel Part # JU33) is provided in the AM IBOC Exciter s ancillary kit to facilitate these connections. Issue Page 5-1

22 Connecting the AM IBOC Exciter Transmitter Sample Inputs Not used for current configurations. Figure 5.1: AM IBOC Exciter: back panel AES/EBU Audio Analog Audio LAN 10 MHz Input 1 Ac Input Mag Phase RF Monitor Station Interface RS232 Debug Port 1 PPS Input Page 5-2 Issue

23 Figure 5.2 AM IBOC Exciter Connections, AM system (XR, XL, NA* series and J1000) * Upgrade may be required TRANSMITTER MAG PHASE ETHERNET LAN MAG FROM MAG 10 MHz EXPORTER PLUS 10 MHZ IN TO TRANSMITTER 1 PPS PHASE 1 PPS IN PHASE 2 FROM ANALOG AUDIO SOURCE ALTERNATE PROGRAM AES/EBU AUDIO or ANALOG AUDIO AM IBOC EXCITER J1000 A1A2J2 A1A2J3 ND A2A8J1 A2A8J4 XL A2A5J1 A2A5J4 XR A2A6J10 A2A6J11 FROM UPS 120 VAC RF OUT MONITOR 1 B VA 1. UPS is optional, but generally recommended to ensure fastest possible recovery from ac brown-out conditions. 2. Analog audio to the exciter is used as a backup. Required connection Optional (not required) connection Issue Page 5-3

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25 Quick setup procedure Section 6: Quick setup procedure This section provides information on setting up the AM IBOC Exciter with the goal of being on-air with an IBOC signal. Starting the AM IBOC Exciter - see page 6-2 Setting the carrier frequency - see page 6-3 Setting the IP address - see page 6-3 Configuring presets - see page 6-4 Calibrating mag/phase delay and dc offset - see page 6-5 Note: Refer to Section 8, Operating on page 8-1 for a complete hierarchy of all user interface (UI) menu options as well as more detailed information on any of the UI pages referenced in this section. Issue Page 6-1

26 Quick setup procedure Starting the AM IBOC Exciter Prior to starting this procedure, ensure that the IBOC carriers cannot be broadcast, either by muting the exciter, or by disconnecting the LAN connection from the AM IBOC Exciter. 1. Turn on an audio processor (or audio processors) and verify that the audio is OK 2. Turn on the AM IBOC Exciter using the front panel on/off switch. The system will boot up (for about ten seconds). During initialization the LEDs on the lefthand side of the AM IBOC Exciter s UI (see Figure 6.1) will cycle through red/green/blank. Once initialized the LEDs will settle on their actual status. Figure 6.1: AM IBOC Exciter UI LEDs Cursor LCD Display Navigational Buttons Note: Refer to Section 8, Operating on page 8-1 for detailed information on any of the user interface pages referenced in this section. Page 6-2 Issue

27 Quick setup procedure Setting the carrier frequency Set the carrier frequency as follows: Figure 6.2: Setting Carrier Frequency 1. From the UI s Edit Settings menu, select Carrier Frequency (see Figure 6.2). 2. Verify the carrier frequency is set correctly. If not, adjust it and press the accept (checkmark) button. Setting the IP address Set the AM IBOC Exciter s Exgine IP address as follows: Figure 6.3: Setting Exgine IP Address Factory default shown; adjust as required 1. From the UI s Edit Settings - LAN Settings menu, select Exgine IP Address (see Figure 6.3). 2. Set the Exgine s IP address. Other network parameters such as Exporter Plus IP, netmask and gateway are factory defaulted (see Figure 8.18 on page 8-14); adjust as required. 3. From the UI s Edit Settings - Link Protocol menu, set Link Protocol to UDP. 4. Verify that all four UI LEDs glow green, indicating that the connection is OK and the associated Exporter Plus is operating normally. Issue Page 6-3

28 Quick setup procedure Configuring presets Configure an operating preset and a backup preset for the AM IBOC Exciter as follows: Figure 6.4: Preset Editing Menu 1. From the UI s Edit Settings - Edit Presets menu, select Edit Preset 1 through 6 to access the editing menu (see Figure 6.4). 2. From the Signal Settings menu (see Figure 6.5), set or verify signal parameters as desired. Typical settings are shown in Signal settings on page Adjustments to the Mag/Phase Delay and Mag DC Offset may be necessary during Calibrating mag/phase delay and dc offset - see page 6-5. Figure 6.5: Signal Settings Menu 3. From the Audio Settings menu (see Figure 6.6), configure the audio input source and select the desired low pass filtering (if used). Figure 6.6: Audio Settings Menu Page 6-4 Issue

29 Quick setup procedure 4. From the Backup Settings menu (see Figure 6.7), configure the condition which causes a changeover to the backup preset and also select the preset that will serve as the analog backup. Figure 6.7: Backup Settings Menu Calibrating mag/phase delay and dc offset Use a spectrum analyzer to adjust the Mag/Phase Delay and DC Offset values for optimum IBOC operation. Note: Depending on your transmitter type and whether you are replacing a pre-existing Nautel NE IBOC-AM exciter, you may need to modify the transmitter before proceeding. 1. If your AM IBOC Exciter is replacing a Nautel NE IBOC-AM exciter, proceed to Step 4. If not, continue to Step Turn off the associated transmitter and remove (disable) its ac power source. 3. Using Table 6.1 on page 6-6 as a guide, perform modifications to your transmitter that are required for IBOC operation. Note that for XL series transmitters, several variations of PWB nomenclature (e.g., NAPE70, NAPE70A and NAPE70B) are listed in the PWB to Modify column. Choose the nomenclature that applies to your transmitter. When modifications are complete, restore the transmitter to operation. 4. In the AM IBOC Exciter UI s Edit Settings - Edit Presets menu, select the appropriate digital preset (Edit Preset 1 through 6) to access the Mag DC Offset and Mag/Phase Delay screens (see Figure 6.8 on page 6-7). 5. If possible, operate the associated AM transmitter into a suitably rated dummy load and then press RF Off. 6. Turn off the analog modulation source and use the UI s Digital Carriers menu to turn OFF the digital modulation. Issue Page 6-5

30 Quick setup procedure Table 6.1: Transmitter Modifications for IBOC Operation Transmitter PWB to Modify Modification(s) XR series J1000 RF Drive Buffer PWB Remote Interface PWB Remote Interface PWB RF Synthesizer PWB (exciter A) RF Synthesizer PWB (exciter B), if installed (1) Install EXCTR A jumper (E1) in the EXT position. (2) Install SENSITIVITY jumper (E3) in the LOW position. (1) Install E19 in the desired SINGLE or DIFF position and apply a ground to J3-23. (1) Install EXCITER A jumper (E1) in the HD-R position. (2) Install EXCITER B jumper (E2) in the AUDIO position. (3) Install E7 in the HD-R (B) position. (1) Remove IC U12 and place in anti-static bag. (2) Install RF DRIVE jumper (E4) in the EXT position. (1) Install RF DRIVE jumper (E4) in the INT or EXT position, depending on the analog operating mode. Exciter Interface PWB (1) Remove resistor R7. (2) Set switch S1 in the DUAL AUDIO position. XL Series NAPE68 RF Drive PWB (exciter A only) or NAPE70 or NAPE70A RF Synthesizer PWB or NAPE70B or NAPE70C RF Synthesizer PWB (exciter A only) Interphase PDM Driver PWB (exciter A only) (1) Install jumper E1 in the EXT position. (2) Install jumpers E3 and E4 in the RFA position. (1) Remove IC U12 and place in anti-static bag (exciter A only). (2) Remove resistors R24 and R27 (both exciters) (3) Install RF DRIVE jumper (E4) in the EXT position (exciter A only). (1) Remove IC U12 and place in anti-static bag. (2) Install RF DRIVE jumper (E4) in the EXT position. (1) Remove IC U4 and place in anti-static bag. (2) Install jumpers E1 through E5 in the DAB position. (3) Adjust AUDIO GAIN potentiometer R31 four turns counterclockwise, then two turns clockwise. ND Series RF Drive PWB (1) Remove resistor R2. (2) Install jumper E1 in the EXT position. Modulator Drive PWB (1) Remove IC U4 and place in anti-static bag. (2) Install jumpers E3 through E6 in the DAB position. (3) Adjust AUDIO GAIN potentiometer R34 four turns counterclockwise, then two turns clockwise. Note: The modifications in Table 6.1 assume that exciter A is operating as digital (IBOC) and exciter B (as applicable) is operating as analog. Page 6-6 Issue

31 Quick setup procedure Figure 6.8: Mag/Phase and Dc Offset Adjustment Screens Table 6.2: Transmitter Adjustments Transmitter Desired Voltage and Test Point Location Mag Gain Potentiometer Carrier Gain Potentiometer Initial Mag/Phase Delay Setting (us) XR series 1.4 V at TP6 of exciter A s interphase PDM driver PWB R127 of remote interface PWB R31 of exciter A s interphase PDM driver PWB 125 J V at TP6 of exciter A s interphase PDM driver PWB R36 of remote interface PWB R31 of exciter A s interphase PDM driver PWB 130 XL Series 1.39 V at TP7 of exciter A s interphase PDM driver PWB R7 of IBOC interface PWB R51 of exciter A s interphase PDM driver PWB 125 ND Series 1.96 V at TP8 of exciter A s modulator driver PWB R7 of IBOC interface PWB R37 of exciter A s modulator driver PWB N/A 7. Verify the Mag DC Offset value is set to V or its pre-defined value, as indicated on the factory provided configuration sheet. 8. Verify the Mag/Phase Delay is set to the initial setting listed in Table See Table 6.2 for your specific transmitter. Using a digital multimeter monitor the appropriate test point for the associated AM transmitter. Adjust the appropriate MAG GAIN potentiometer until the multimeter reads the desired voltage. For XR series transmitters, you may need to adjust the AM IBOC Exciter s output level (see Signal output configuration on page 8-19) to achieve 1.4 V on the associated test point. 10. In the AM IBOC Exciter s UI, set Digital Carriers to ON. Issue Page 6-7

32 Quick setup procedure 11. Press RF On and adjust the associated transmitter to the required power level. 12. Monitor the transmitter s RF output with a spectrum analyzer set for the carrier frequency, a span of 100 khz, RBW of 300 Hz, and a VBW of 300 Hz. For initial adjustments, set averaging for a sample detection (or peak, if there is no sample; DO NOT USE RMS). For the final measurement to verify that the output is within FCC limits, set averaging for a 30 second period. 13. Adjust the Mag/Phase Delay value to optimize the digital output spectrum (see Figure 6.9 for an example of an optimized output spectrum). 14. It may be possible to further improve the digital output spectrum. Adjust the Mag DC Offset value in small increments. Note that the transmitter output power will be directly affected by this adjustment and should be corrected (increased or decreased) from the transmitter s front panel. Do not exceed a Mag DC Offset value of 100 mv. Note: Allow sufficient time for the averaging function to stabilize the spectrum analyzer s reading between adjustments. Figure 6.9: Example of an Optimized Transmitter Output Spectrum Page 6-8 Issue

33 Quick setup procedure 15. If necessary, adjust the appropriate CARRIER GAIN TRIM potentiometer (see Table 6.2 on page 6-7) to balance the output power between exciter A and exciter B. 16. Verify the transmitter s output spectrum is within FCC limits. 17. Turn on the analog modulating source and use the UI s Digital Carriers menu to turn OFF the digital modulation. 18. Adjust the analog modulating source output to maintain proper modulation levels. If the required modulation depths cannot be reached, adjust the Analog Gain value in the AM IBOC Exciter s UI, also located in the Signal Settings menu. Note: An Analog Gain setting of 100% corresponds to 0 db full-scale gain applied to the audio. 19. When adjustments are complete, set Digital Carriers to ON. 20. Turn off the transmitter and connect it to the antenna. 21. While continuing to monitor the transmitter s RF output with a spectrum analyzer, readjust the Mag DC Offset and Mag/Phase Delay to optimize the digital output spectrum. 22. Record all signal settings for future reference. Issue Page 6-9

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35 Remote interfacing Section 7: Remote interfacing This section describes remote control and monitoring of the AM IBOC Exciter. The STATION INTERFACE connector (8-position terminal block) on the back of the AM IBOC Exciter contains two digital inputs and three digital outputs. Inputs allow you to select between the day and night presets of the AM IBOC Exciter. Outputs provide status of various HD data and audio alarms. See Table 7.1 for a list of the digital inputs and outputs, interfacing logic levels, functional description, and STATION INTERFACE pin number. Install suitable wiring in the 8-pole mini-plug provided (Nautel Part # JU33 in the ancillary kit) and mate it to the STATION INTERFACE connector. Route the other end of the wires to the remote control/monitoring location. Table 7.1: Station Interface Connector Digital Inputs Signal Direction (Level) Function Pin Day Input (Open/Ground) Selects the day preset. 1 (ground on 2) Night Input (Open/Ground) Selects the night preset. 3 (ground on 4) HD Data Missing Output (3.3 V/Ground) Indicates status of HD Data Missing alarm. 5 Audio Inhibited Output (3.3 V/Ground) Indicates status of Audio Inhibited alarm. 6 Audio Missing Output (3.3 V/Ground) Indicates status of Audio Missing alarm. 7 Issue Page 7-1

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37 Operating Section 8: Operating This section provides information about operating the AM IBOC Exciter: User interface - see page 8-2 LCD display - see page 8-2 Navigational buttons - see page 8-2 LEDs - see page 8-2 UI menus - see page 8-5 Main menu - see page 8-6 Edit presets - see page 8-9 Signal settings - see page 8-10 Audio settings - see page 8-11 Backup settings - see page 8-12 Copy another preset - see page 8-13 Carrier frequency - see page 8-13 LAN settings - see page 8-14 Display settings - see page 8-15 Power switch setting - see page 8-16 Day/night settings - see page 8-17 Audio input levels - see page 8-18 Signal output configuration - see page 8-19 Calibrate exciter TCXO - see page 8-20 Configure test signal generator - see page 8-20 View status - see page 8-23 Issue Page 8-1

38 Operating User interface The AM IBOC Exciter user interface (UI) is 4 x 20 character LCD display on the front panel (see Figure 8.1). The UI can be controlled by its adjacent keypad. The UI contains a menu-based series of pages that serve specific functions (see UI menus ). Figure 8.1: AM IBOC Exciter UI Preset LEDs Cursor Frequency Active Preset Output Signal Type Navigational Buttons LCD Display LCD display This screen displays all the UI pages. See Figure 8-2 and Figure 8-3 for a complete hierarchy of the UI menus. See Table 8.1 on page 8-5 for a list of the menus and their basic functions. Navigational buttons There are six push-buttons on the right-hand side of the LCD display that allow navigation through the UI pages. LEDs Up and down - move cursor up and down through the associated page Left - go to the next higher level menu screen, as applicable Right - go to the next lower level menu screen, as applicable Checkmark - acts as an accept function; display will prompt its use X - acts as a cancel function; display will prompt its use There are four LEDs on the left-hand side of the LCD display that provide operational status. The LEDs can glow green, yellow or red. Typically, green indicates normal operation, yellow indicates a warning, and red indicates a fault or error. Refer to the Troubleshooting section (section 9) for more detailed information on LED status. Page 8-2 Issue

39 MAIN MENU Select Preset Edit Settings Edit Preset 1-6 Signal Settings Mag/Phase Delay Mag DC Offset Upper Primary Level Lower Primary Level Analog Gain Digital Carriers Audio Settings Input Source Low Pass Filter * Displayed for analog presets only * Pre-emphasis Filter * AM Mode Backup Settings Backup Condition Backup Preset Copy Another Preset Carrier Frequency LAN Settings Exgine IP Address Exporter IP Address Netmask Gateway Link Protocol Figure 8-2: AM IBOC Exciter UI Hierarchy (Sheet 1 of 2) Issue Page 8-3

40 Edit Settings Display Settings LCD Contrast View Status View Alarms LCD Backlight Power Switch Backlight Timeout View Events Log Day/Night Settings Day Setting View Hardware Night Setting View Software Audio Input Levels AES Input Level Balanced Analog Level Calibrated Balanced Analog View Modulation Signal Output Output Level Output Format View Exgine Stats Calibrate Exciter TCXO Help Test Signal Generator Test Signal Type ** Displayed for specific test signals only **Test Signal Level **Start Frequency **Stop Frequency **Sweep Time EQ Settings Figure 8-3: AM IBOC Exciter UI Hierarchy (Sheet 2 of 2) Issue Page 8-4

41 Operating UI menus Table 8.1: UI Menus UI Menu Name Function Page No name (top level) Allows entry to four sub-menus - Select Preset, Edit Settings, View Status and Help. 8-6 Select Preset Select the active programmed preset (1 through 6). 8-7 Edit Settings - Edit Presets Edit the settings for any of the six presets, including signal settings, audio settings and copying other presets. 8-9 Edit Settings - Carrier Frequency Set the carrier frequency for the AM IBOC Exciter Edit Settings - LAN Settings Set the network parameters such as Exgine IP address, Exporter Plus IP address, netmask and gateway Edit Settings - Display Settings Edit Settings - Power Switch Edit Settings - Day/Night Setting Edit Settings - Audio Input Levels Edit Settings - Signal Output Edit Settings - Calibrate Exciter TCXO Adjust the LCD display s contrast, brightness and backlighting Enable or disable the front panel power switch Select the preset associated with day and night settings Configure the levels for the AES and analog input sources Configure the signal output level and format (mag/phase or RF) Perform a calibration of the exciter s TCXO Edit Settings - Test Signal Generator Edit Settings - EQ Settings Status Configure the test signal s type and other applicable parameters such as test signal level, start/stop frequencies and sweep time. Configured at factory. Not intended for customer use. View status of alarms, event log, hardware settings, software versions, modulation, and Exgine statistics N/A 8-23 Issue Page 8-5

42 Operating Main menu All navigation through the UI begins on the main menu shown in Figure 8.4. Figure 8.4: Main Menu This menu has four sub-menu options: Select Preset - allows selection of the active preset (see Select preset on page 8-7). Edit Settings - allows access to all configurable parameters and settings for the AM IBOC Exciter (see Edit settings on page 8-7). View Status - allows monitoring of AM IBOC Exciter status, including alarms, event log, hardware settings, software versions, modulation, and Exgine statistics (see View status on page 8-23). Help - provides scrollable text to assist with UI navigation. Use the up and down buttons to move the cursor to the desired option and then press the right button to open the selected menu. Page 8-6 Issue

43 Operating Select preset You can select the AM IBOC Exciter s active preset using the Select Preset menu (see Figure 8.5). Figure 8.5: Select Preset Menu Use the up and down buttons to select the desired preset (1 through 6). Press the accept button to actvate the new preset. Edit settings You can configure various parameters of the Exporter Plus in the Settings menu (see Figure 8.6). Figure 8.6: Settings Menu Issue Page 8-7

44 Operating This menu has ten sub-menu options: Edit Presets - allows editing of any of six presets, including signal settings, audio settings and copying other presets (see Edit presets on page 8-9). Carrier Frequency - allows editing of the carrier frequency (see Carrier frequency on page 8-13). LAN Settings - allows configuration of the AM IBOC Exciter network information such as Exgine IP address, Exporter Plus IP address, netmask and gateway (see LAN settings on page 8-14). Display Settings - allows setting of the LCD display s contrast, brightness and backlighting (see Display settings on page 8-15). Power Switch - allows configuration of the AM IBOC Exciter s front panel power switch (see Power switch setting on page 8-16). Day/Night - allows selection of the presets used for day and night (see Day/night settings on page 8-17). Audio Input Levels - allows for configuration of the levels for the AES and analog input sources (see Audio input levels on page 8-18). Signal Output - CONSULT NAUTEL BEFORE ALTERING! Allows for configuration of the signal output level and format (mag/phase or RF) (see Signal output configuration on page 8-19). Cal. Exciter TCXO - CONSULT NAUTEL BEFORE ALTERING! Allows calibration of the exciter TCXO (see Calibrate exciter TCXO on page 8-20). Test Signal Gen. - allows for configuration of the test signal s type and other applicable parameters such as test signal level, start/stop frequencies and sweep time (see Configure test signal generator on page 8-20). EQ Settings - CONSULT NAUTEL BEFORE ALTERING! Not intended for customer use. Use the up and down buttons to move the cursor to the desired option and then press the right button to open the selected menu. Page 8-8 Issue

45 Operating Edit presets From the Edit Presets menu (see Figure 8.7) you can edit any of the six presets. Figure 8.7: Edit Presets Menu Use the up and down buttons to move the cursor to the desired preset and then press the right button to open the selected preset s editing options screen (see Figure 8.8). The assigned operating mode for each preset is indicated in parentheses (e.g., HD or AM). The active preset is indicated by a music note in the upper, right-hand corner of the LCD display. Figure 8.8: Presets Editing Options Screen There are four sub-menu options: Signal Settings - allows editing of mag/phase delay, mag dc offset, upper and lower primary levels, analog gain, and digital carrier status (on or off) (see Signal settings on page 8-10). Audio Settings - allows configuration of the audio input source and low pass filtering, as applicable (see Audio settings on page 8-11). Backup Settings - allows configuration of a backup preset that can become operational if the HD signal on the main preset is lost (see Backup settings on page 8-12). Copy Another Preset - allows copying the settings of one preset into another (see Copy another preset on page 8-13). Use the up and down buttons to move the cursor to the desired option and then press the right button to open the selected option s screen. Issue Page 8-9

46 Operating Signal settings When you select Signal Settings from the Preset editing options screen, you can edit various signal parameters (see Figure 8.9). Note the preset being edited is displayed in parentheses [e.g., (P1)]. Figure 8.9: Signal Settings Screen Use the up and down buttons to move the cursor to the desired parameter and then press the right button to enable editing of the selected parameter. Figure 8.10 shows all the editing screens for the Signal Settings menu. Within any of the editing screens, use the up and down buttons to edit a parameter value, then press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu. Figure 8.10: Signal Settings Editing Screens Note: An Analog Gain setting of 100% corresponds to 0 db full-scale gain applied to the audio. Page 8-10 Issue

47 Operating Audio settings When you select Audio Settings from the Preset editing options screen, you can configure audio input characteristics (see Figure 8.11). Note the preset being edited is displayed in parentheses [e.g., (P1)]. Figure 8.11: Audio Settings Screen Use the up and down buttons to move the cursor to the desired parameter and then press the right button to enable editing of the selected parameter. Figure 8.12 shows the editing screens for the Audio Settings menu. Note that the Premphasis Filter and AM Mode options appear for analog presets only. Within any of the editing screens, use the up and down buttons to edit a parameter setting, then press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu. Figure 8.12: Audio Settings Editing Screens Displayed for analog presets only Select: Serial I/Q: IBOC, AES: AM, or Balanced Analog: AM Select: Disabled or any frequency between 1000 Hz and 10 khz. For analog presets only, Select: ON or OFF For analog presets only, Select: Mono AM, DCC2, DCC1, Full DAM, Basic DAM, EAMC, AMC, AM Stereo C-QUAM. Issue Page 8-11

48 Operating Backup settings When you select Backup Settings from the Preset editing options screen, you can configure a preset that will act as the backup in the event that active preset s audio is lost (see Figure 8.13). Note the preset being edited is displayed in parentheses [e.g., (P1)]. Figure 8.13: Backup Settings Screen Use the up and down buttons to move the cursor to Backup Condition or Backup Preset and then press the right button to enable editing of the selected parameter. Figure 8.14 shows the editing screens for the Backup Settings menu. Within either of the editing screens, use the up and down buttons to edit a parameter setting, then press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu. Figure 8.14: Backup Settings Editing Screens Select: Loss of HD - switches to backup preset if true Disabled - will not switch to backup preset Loss of Audio - switches to backup preset if true Reacquired HD - switches back to HD preset if true Page 8-12 Issue

49 Operating Copy another preset When you select Copy Another Preset from the Preset editing options screen (see Figure 8.15), you can copy the settings from another preset into the preset that is being edited. Note the preset being edited is displayed in parentheses [e.g., (P1)]. Figure 8.15: Copy Another Preset Screen Use the up and down buttons to select the preset (1 through 6) that you wish to copy to the selected preset for editing. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu. Carrier frequency From the Carrier Frequency screen (see Figure 8.16) you can set the AM carrier frequency. Figure 8.16: Carrier Frequency Screen Use the up and down buttons to edit the carrier frequency. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu. Issue Page 8-13

50 Operating LAN settings From the LAN Settings menu (see Figure 8.17) you can configure the Exgine and Exporter IP addresses, the netmask address, gateway adress and link protocol. Figure 8.17: LAN Settings Menu Use the up and down buttons to move the cursor to the desired LAN setting and then press the right button to enable editing of the setting. Figure 8.18 shows the editing screens for the LAN Settings menu. Within any of the editing screens, use the left and right buttons to select the desired characters for editing and use the up and down buttons to edit a setting. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu. Figure 8.18: LAN Settings Editing Screens Factory defaults shown; adjust as required Select UDP or TCP Page 8-14 Issue

51 Operating Display settings You can configure the LCD display s contrast, brightness and backlight settings using the Display Setttings menu (see Figure 8.19). Figure 8.19: Display Settings Menu This menu has three sub-menu options: LCD Contrast - sets the display contrast. LCD Backlight - sets the brightness of the display s backlight during normal use. Backlight Timeout - sets a time delay, after a period of non-use, that the brightness of the display s backlight will dim. Use the up and down buttons to move the cursor to the desired display setting and then press the right button to enable editing of the setting. Figure 8.20 shows the editing screens for the Display Settings menu. Within any of the editing screens, use the up and down buttons to edit a setting. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu. Figure 8.20: Display Settings Editing Screens Changes in 5 s intervals Issue Page 8-15

52 Operating Power switch setting You can configure the AM IBOC Exciter s front panel power switch using the Power Switch screen (see Figure 8.21). Figure 8.21: Power Switch Screen Use the up and down buttons to toggle the setting between Enabled, Disabled and Enabled with warning, noting the following: Enabled - Allows (enables) the power switch to function normally and switch on or off the AM IBOC Exciter. Disabled - Disables the power switch so that it cannot switch on or off the AM IBOC Exciter. Enabled with warning - Allows (enables) the power switch to function normally and switch on or off the AM IBOC Exciter. Upon turn-off, a warning screen is displayed, and the power switch must be held for ten seconds before the AM IBOC Exciter switches off. Page 8-16 Issue

53 Operating Day/night settings You can configure the active preset for daytime and nightime operation using the Day/Night Setting menu (see Figure 8.22). Figure 8.22: Day/Night Settings Menu Use the up and down buttons to move the cursor to Day or Night and then press the right button to enable editing of the active preset (note that currently preset is also displayed). Figure 8.23 shows the editing screens for the Day/Night Setting menu. Within either of the editing screens, use the up and down buttons to change the preset used for that setting. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu. Figure 8.23: Day/Night Settings Editing Screens Issue Page 8-17

54 Operating Audio input levels From the Audio Input Levels menu (see Figure 8.24) you can configure the levels for the AES and analog input sources. Figure 8.24: Audio Input Levels Menu Use the up and down buttons to move the cursor to the desired audio input and then press the right button to enable editing of the level. Figure 8.25 shows the editing screens for the Audio Input Levels menu. Within any of the editing screens, use the up and down buttons to edit a level. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu. Figure 8.25: Audio Input Levels Editing Screens Allows calibration of the analog input. Nautel calibrates this for dbm using an accurate source. User calibration should not be required. Page 8-18 Issue

55 Operating Signal output configuration From the Signal Output menu (see Figure 8.26) you can configure the type of output from the AM IBOC Exciter. This menu is not intended for customer use. Consult Nautel before editing any parameters in this menu. Figure 8.26: Signal Output Menu Use the up and down buttons to move the cursor to Output Level or Output Format and then press the right button to enable editing. Figure 8.27 shows the editing screens for the SIgnal Output menu. Within either of the editing screens, use the up and down buttons to edit the setting. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu. Figure 8.27: Signal Output Editing Screens Select: Mag/Phase Output or RF Output Issue Page 8-19

56 Operating Calibrate exciter TCXO From the Cal. Exciter TCXO menu (see Figure 8.28) you can calibrate the AM IBOC Exciter s TCXO. The AM IBOC Exciter must be off-air during this procedure. Nautel performs this procedure at the factory. User calibration should not be required. Figure 8.28: Calibrate Exciter TCXO Screen Press the accept (checkmark) button to begin the calibration. The display indicates the progress of the calibration, which takes approximately one minute to complete. Configure test signal generator From the Test Signal Gen. menu (see Figure 8.29) you can configure the test signal output of the AM IBOC Exciter. Note that a different menu may appear depending on the currently configured test signal type. Figure 8.29: Test Signal Generator Menus Displayed when there is no test signal or when it is set to MA-1 or MA-3 Displayed when test signal is MA-1 White Noise, MA-1 Single Tone, White Noise or Single Tone Displayed when test signal is Tone Sweep or MA-1 Tone Sweep Page 8-20 Issue

57 Operating Use the up and down buttons to move the cursor to the desired line item and then press the right button to enable editing. The following test signals are available: None - no test signal MA-3 (available for HD mode only) MA-1 (available for HD mode only) MA-1 White Noise (available for HD mode only) - also allows setting of test signal level and start frequency. MA-1 Single Tone (available for HD mode only) - also allows setting of test signal level and start frequency. MA-1 Tone Sweep (available for HD mode only) - also allows setting of test signal level, start frequency, stop frequency and sweep time. Note: The options listed above represent internally generated IBOC data that is intended for spectral tests only. White Noise - adds to audio content; allows setting of test signal level and start frequency (in this case, noise bandwidth). Single Tone - adds to audio content; also allows setting of test signal level and start frequency. Tone Sweep - adds to audio content; also allows setting of test signal level, start frequency, stop frequency and sweep time. Figure 8.30 on page 8-22 shows the editing screens for the Test Signal Gen. menu. Within any of the editing screens, use the up and down buttons to edit the setting. Press the accept (checkmark) button to save the change. Press cancel (X) to return to the previous menu. Issue Page 8-21

58 Operating Figure 8.30: Test Signal Generator Editing Screens Select: None, MA-3, MA-1, MA-1 White Noise, MA-1 Single Tone, MA-1 Tone Sweep, White Noise, Single Tone, Tone Sweep Page 8-22 Issue

59 Operating View status You can view the operational status of the AM IBOC Exciter using the View Status menu (see Figure 8.31). Figure 8.31: View Status Menu Use the up and down buttons to select the desired item for viewing and then press the right button to view the details. See Figure 8.32 through Figure 8.37 for the viewing screens associated with each selection. Press the accept (checkmark) button within the Event Log screen to clear the log entries. Figure 8.32: View Alarms Screen Figure 8.33: View Event Log Screen Press to clear events log Issue Page 8-23

60 Operating Figure 8.34: View Hardware Screen Figure 8.35: View Software Versions Screen Page 8-24 Issue

61 Operating Figure 8.36: View Modulation Screens Issue Page 8-25

62 Operating Figure 8.37: View Exgine Stats Screen RUN indicates normal operation. May also display SYNC or INIT. Both RX (receive) values should increase during normal operation. If not, there may be a poor connection with the Exporter Plus. MAC address of Exgine card Note: The Exgine Statistics screen is useful for debugging LAN faults. Page 8-26 Issue

63 Troubleshooting Section 9: Troubleshooting The fastest way to determine the AM IBOC Exciter s status is by viewing the front panel user interface (UI). The View Status menu of the LCD display can assist in diagnosing a fault as well as the four LEDs adjacent the display. When there are alarms, or the AM IBOC Exciter is no longer operational, these LEDs will turn red. The features described above allow the user to determine the AM IBOC Exciter s operational status at almost any time. In the event that the AM IBOC Exciter becomes non-operational, some simple troubleshooting procedures can be followed to return it to operational status. This section outlines some common errors and warnings that may occur, along with the procedures to correct each problem. Note: It is highly recommended that troubleshooting personnel be familiar with the operation of the AM IBOC Exciter. Refer to the Operating section of this manual as an aid in troubleshooting. The following troubleshooting information is included in this section: LED indications - see page 9-2 Network related alarms - see page 9-4 Audio related alarms - see page 9-4 Checking cable connections - see page 9-5 Parts information - see page 9-6 Electrical schematics - see page 9-9 Issue Page 9-1

64 Troubleshooting LED indications There are four LEDs on the left-hand side of the LCD display that provide operational status for the AM IBOC Exciter (see Figure 9.1). The LEDs can glow green, yellow or red. Typically, green indicates normal operation, yellow indicates a warning, and red indicates a fault or error. Figure 9.1: Front Panel LEDs LEDs Table 9.1 on page 9-3 lists possible root causes for LEDs that are in a warning (yellow) or alarm (red) condition). Page 9-2 Issue

65 Troubleshooting Table 9.1: LED Status and Root Causes LED Colour Possible Root Causes Status Lan Audio Green Red Yellow Red Green Green Red Red The AM IBOC Exciter is producing a valid output. The AM IBOC Exciter is not producing a valid output. Exgine is initializing. Exgine has initialized, but no Ethernet connection has been detected. There is a successful Ethernet connection. The selected audio is present. The selected audio is not present. The AM IBOC Exciter is in HD mode, but the Exgine is not providing valid data. HD Data Green The AM IBOC Exciter is in HD mode and is providing HD data. Off The AM IBOC Exciter is not in HD mode. Issue Page 9-3

66 Troubleshooting Network related alarms There are several network related faults that can affect the operating status of the AM IBOC Exciter. Use the Edit Settings > LAN Settings menu on the UI to check settings. Verify that the Exgine IP address matches the destination IP that is configured in the Exporter Plus. If the AM IBOC Exciter is connected to the same subnet as the Exporter Plus, use a PC connected to the network to ping the AM IBOC Exciter IP addresses (see Figure 9.2) to verify that the AM IBOC Exciter is accessible. Refer to the Exporter Plus Technical Instruction Manual for further troubleshooting. Figure 9.2: Typical Ping Command Audio related alarms There are several ways to check the audio inputs. 1. Use the View Status > View Modulation screens to verify that the audio is present. 2. Use the Edit Settings > Edit Presets > Audio Settings screen to ensure that the correct audio input is selected for the operating preset. Page 9-4 Issue

67 Troubleshooting Checking cable connections Verify that the AM IBOC Exciter s internal cables are connected properly as follows: 1. Remove the AM IBOC Exciter s top cover. 2. Inspect the cables and connections. If a connector is unseated or disconnected, ensure it is reconnected to its mate as identified in Table 9.2. If necessary, see Figure 9.3 on page 9-7 to identify the exporter's sub-assemblies. Table 9.2: Connector Mating Information Connector P1 P2 P3 P4 P5 P6 P7 P9 W1P1 W1P2 W2P1 W2P2 W3P1 W3P2 Mate A1J15 A2J3 A1J16 A2J4 A1J13 A2J5 A1J18 U2H1 A1J17 A2J2 U3 A2J1 A1J19 A2J8 Issue Page 9-5

68 Troubleshooting Parts information For the purposes of identifying parts and possibly ordering replacements, the AM IBOC Exciter s internal assemblies are identified in Table 9.3 and Figure 9.3 on page 9-7. The table provides the reference designation, a description, and the Nautel part number for each item. The figure shows the location of the major components. Table 9.3: AM IBOC Exciter Plus Parts List Reference Designation Description Nautel Part # A1 AM IBOC Exciter Interface PWB NAPI113 or NAPI113A A2 Exgine PWB NAPE74A A3 Digital AM Exciter PWB NAPE78 F1 Fuse, 2A, 250V, 5x20mm, Anti-surge FA39 S1 Switch, MOM, Rocker, SPST, 15A SD68 U1 Power Supply, +/-15V, +5V, 40W, Vac/ Vdc UG51 U2 Display, 4 Line LCD, w Keypad, 5V RS232 UW101 U3 Connector, Coupler, RJ45, Feed-Thru, Shielded JA76 U4 Connector, Power Entry, C14, c/w fuseholder JT91 Page 9-6 Issue

69 Troubleshooting Figure 9.3: AM IBOC Exciter Sub-assemblies U3 A1 U4, F1 A3 U1 A2 U2 A1 LEDs DS1 (Health) - on (flashing slow) DS2 - off DS3 - off A2 LEDs DS1 (Link) - on (flashing fast) DS2 - off DS3 - off DS4 - off DS5 (PS good) - on (solid) A3 LEDs DS1 - on (solid) DS2 - on (solid) DS3 - off DS4 - on (flashing slow) Normal Operating LED Status Issue Page 9-7