DQMx Series. Digital QAM Multiplexer INSTRUCTION MANUAL. Model Stock No. Description

Transcription

1 One Jake Brown Road Old Bridge, NJ USA (800) (732) FAX: (732) INSTRUCTION MANUAL DQMx Series Digital QAM Mltiplexer Model Stock No. Description DQMx-XY 6259A XY Digital QAM Mltiplexer with "X" ASI inpt modles and "Y" 8VSB/QAM inpt modles DQMx-RF VSB/QAM Inpt Modle DQMx-ASI 6257 ASI/Inpt Modle DQMx 6259A Digital QAM Mltiplexer Mainframe Stats Date Docment No. Isse No. Athor Active Ag. 29, F 6 KK Obsolete May 19, E 5 AB Obsolete Jan. 25, D 4 KK Obsolete Jn. 26, C 3 AB Obsolete Mar. 19, B 2 AB Obsolete Ag. 25, A 1 JB 2011 Blonder Tonge Laboratories, Inc. All rights reserved. Specifications are sbject to change withot notice. Trademarks are the property of their respective owner.

2 2 DQMx Series We recommend that yo write the following information in the spaces provided below. Prchase Location Name: Prchase Location Telephone Nmber: DQMx Serial Nmber: The information contained herein is sbject to change withot notice. Revisions may be issed to advise of sch changes and/or additions. Correspondence regarding this pblication shold be addressed directly to: Blonder Tonge Laboratories, Inc. One Jake Brown Road Old Bridge, NJ Docment Nmber: F Printed in the United States of America. All prodct names, trade names, or corporate names mentioned in this docment are acknowledged to be the proprietary property of the registered owners. This prodct incorporates copyright protection technology that is protected by U.S. patents and other intellectal property rights. Reverse engineering or disassembly is prohibited.

3 Table of Contents DQMx Series SECTION 1 GENERAL & SAFETY INSTRUCTIONS... 4 SECTION 2 PRODUCT SUMMARY REVISION HISTORY & REASON PRODUCT APPLICATION & DESCRIPTION PRODUCT SPECIFICATION... 8 SECTION 3 INSTALLATION & POWER-UP UNPACKING INSTALLATION POWER-UP SECTION 4 CONFIGURATION GENERAL QUICK CONFIGURATION MODULES SECTION 5 INPUT MODULE MENU ASI INPUT MODULE: GENERAL ASI INPUT MODULE: TSID PARAMETER ASI INPUT MODULE: MJR OFFSET PARAMETER ASI INPUT MODULE: PID OFFSET PARAMETER ASI INPUT MODULE: PROGRAM # PARAMETER VSB/QAM INPUT MODULE: GENERAL VSB/QAM INPUT MODULE: TSID PARAMETER VSB/QAM INPUT MODULE: MJR OFFSET PARAMETER VSB/QAM INPUT MODULE: PID OFFSET PARAMETER VSB/QAM INPUT MODULE: BAUD RATE PARAMETER VSB/QAM INPUT MODULE: CHANNEL NO PARAMETER VSB/QAM INPUT MODULE: RF MODE PARAMETER VSB/QAM INPUT MODULE: MODULATION PARAMETER VSB/QAM INPUT MODULE: PROGRAM # PARAMETER SECTION 6 QAM MENU GENERAL QAM MENU: GRAY MODE PARAMETER QAM MENU: INTERLEAVE PARAMETER QAM MENU: ALPHA PARAMETER QAM MENU: BAUD RATE PARAMETER QAM MENU: MODULATION PARAMETER QAM MENU: ENCODE MODE PARAMETER QAM MENU: MODE PARAMETER SECTION 7 RF OUTPUT MENU GENERAL RF MENU: FIRMWARE PARAMETER RF MENU: OUTPUT LEVEL PARAMETER RF MENU: OUTPUT CHANNEL # PARAMETER RF MENU: OUTPUT MODE PARAMETER SECTION 8 MUX OUTPUT MENU GENERAL MUX OUTPUT: CVCT ENABLE MUX OUTPUT: OUT TSID MUX OUTPUT MENU: PSIP ENABLE PARAMETER MUX OUTPUT MENU: RESCAN ALL PARAMETER MUX OUTPUT MENU: FACTORY DEFAULT PARAMETER MUX OUTPUT MENU: VERSION PARAMETER MUX OUTPUT MENU: ADDRESS PARAMETER MUX OUTPUT MENU: PROGRAM #X PARAMETER SECTION 9 FREQUENTLY ASKED QUESTIONS APPENDIX A MEASURING THE QAM OUTPUT SIGNAL LEVEL

4 4 DQMx Series Section 1 General & Safety Instrctions The STOP sign symbol is intended to alert yo to the presence of REQUIRED operating and maintenance (servicing) instrctions that if not followed, may reslt in prodct failre or destrction. The YIELD sign symbol is intended to alert yo to the presence of RECOMMENDED operating and maintenance (servicing) instrctions. The LIGHTNING flash symbol is intended to alert yo to the presence of ninslated "dangeros voltage" within the prodct's enclosre that may be of sfficient magnitde to constitte a risk of electrical shock. TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER FROM THIS UNIT. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE NOTE TO CATV SYSTEM INSTALLER This reminder is provided to call the CATV System Installer s attention to Article of the NEC that provides gidelines for proper gronding and, in particlar, specifies that the cable grond shall be connected to the gronding system of the bilding, as close to the point of cable entry as practical. Safety Instrctions YOU SHOULD ALWAYS FOLLOW THESE INSTRUCTIONS TO HELP ENSURE AGAINST INJURY TO YOURSELF AND DAMAGE TO YOUR EQUIPMENT. Read all safety and operating instrctions before yo operate the nit. Retain all safety and operating instrctions for ftre reference. Heed all warnings on the nit and in the safety and operating instrctions. Follow all installation, operating, and se instrctions. Unplg the nit from the AC power otlet before cleaning. Use only a damp cloth for cleaning the exterior of the nit. Do not se accessories or attachments not recommended by Blonder Tonge, as they may case hazards, and will void the warranty. Do not operate the nit in high-hmidity areas, or expose it to water or moistre. Do not place the nit on an nstable cart, stand, tripod, bracket, or table. The nit may fall, casing serios personal injry and damage to the nit. Install the nit only in a monting rack designed for 19 rack-monted eqipment.

5 DQMx Series 5 Safety Instrctions - contined Do not block or cover slots and openings in the nit. These are provided for ventilation and protection from overheating. Never place the nit near or over a radiator or heat register. Do not place the nit in an enclosre sch as a cabinet withot proper ventilation. Do not mont eqipment in the rack space directly above or below the nit. Operate the nit sing only the type of power sorce indicated on the marking label. Unplg the nit power cord by gripping the plg, not the cord. The nit is eqipped with a three-wire grond-type plg. This plg will fit only into a grond-type power otlet. If yo are nable to insert the plg into the otlet, contact an electrician to replace the otlet. Do not defeat the safety prpose of the grond-type plg. Rote power spply cords so that they are not likely to be walked on or pinched by items placed pon or against them. Pay particlar attention to cords at plgs, convenience receptacles, and the point where they exit from the nit. Be sre that the otdoor components of the antenna system are gronded in accordance with local, federal, and National Electrical Code (NEC) reqirements. Pay special attention to NEC Sections 810 and 820. See the example shown in the following diagram: We strongly recommend sing an otlet that contains srge sppression or grond falt protection. For added protection dring a lightning storm, or when the nit is left nattended and nsed for long periods of time, nplg it from the wall otlet and disconnect the lines between the nit and the antenna. This will prevent damage cased by lightning or power line srges. Do not locate the antenna near overhead power lines or other electric light or power circits, or where it can fall into sch power lines or circits. When installing the antenna, take extreme care to avoid toching sch power lines or circits, as contact with them can be fatal. Do not overload wall otlets or extension cords, as this can reslt in a risk of fire or electrical shock. Never insert objects of any kind into the nit throgh openings, as the objects may toch dangeros voltage points or short ot parts. This cold case fire or electrical shock. Do not attempt to service the nit yorself, as opening or removing covers may expose yo to dangeros voltage and will void the warranty. Refer all servicing to athorized service personnel. Unplg the nit from the wall otlet and refer servicing to athorized service personnel whenever the following occrs: The power spply cord or plg is damaged; Liqid has been spilled, or objects have fallen into the nit; The nit has been exposed to rain or water; The nit has been dropped or the chassis has been damaged; The nit exhibits a distinct change in performance. When replacement parts are reqired, ensre that the service technician ses replacement parts specified by Blonder Tonge. Unathorized sbstittions may damage the nit or case electrical shock or fire, and will void the warranty. Upon completion of any service or repair to the nit, ask the service technician to perform safety checks to ensre that the nit is in proper operating condition. Retrning Prodct for Repair (or Credit) A Retrn Material Athorization (RMA) Nmber is reqired on all prodcts retrned to Blonder Tonge, regardless if the prodct is being retrned for repair or credit. Before retrning prodct, please contact the Blonder Tonge Service Department at , Ext or visit or website: for frther information.

6 6 DQMx Series Section 2 Prodct Smmary 2.1 Revision History & Reason This is the sixth isse of this. Added reference in Section 5.4 regarding PID offsets changing program nmbers. Previosly only minor channel nmbers were mentioned. 2.2 Prodct Application & Description Application: The DQMx mltiplexer can be eqipped with p to for (4) inpt modles. There are two types of inpt modles available: ASI and 8VSB/QAM. Any mix of inpt modles are allowed, for example, DQMx can be eqipped with two ASI inpt modles and 2 8VSB/QAM inpt modles. Operator can select which programs within each inpt stream are to be filtered or passed on. The reslting otpt stream is QAM modlated and pconverted to an RF channel with a set of atomatically generated PSI (Program Specific Information) and PSIP (Program & System Information Protocol) tables. The data rate can be p to 38.8 Mbps for transmission in a single 6 MHz, QAM 256 channel or higher with QAM 512 and The DQMx spports standard EIA CATV, IRC, HRC and Broadcast channel plans in the freqency range. All channel freqency information, with appropriate FCC offsets, is pre-programmed and tned electronically via microprocessor. The ASI inpt can come from mltiple sorces, sch as Blonder Tonge s AQD Pls ASI (# ) or DAP Pls ASI (# ), integrated satellite receiver/decoders (IRDs), broadcast station fiber feeds, or file/video servers.

7 DQMx Series 7 Description: Below are the front and rear pictres of the nit: MUX OUTPUT [1] & [2] LCD SCREEN & KEY-PAD: [1] [2] The LCD has 2 lines, each capable of displaying 16 characters. The key-pad has 5 psh-down bttons sed to navigate between mens and to program nit information. Inpt Modle Compartment (with removable cover) [3] [4] [5] [6] [3] POWER: An IEC power cord socket [7] THE ACCEPTABLE INPUT VOLTAGES ARE 110 VAC/60 Hz & 220 VAC/ 50 Hz. [4] FUSE HOLDER: 1.0 Amp., 250V DC, Slo Blo Fse [5] RS232 SERIAL DATA PORTS: RJ-11 IN/OUT connectors provide a single access point for mltiple DQMx nits via daisy-chaining ftre pgrade. [6] QAM RF OUTPUT: 75 Ω F connector [7] INPUT MODULES: ASI - 75 Ω BNC connector OR 8VSB/QAM - 75 Ω F connector ASI Inpt Modle Model: DQMx-ASI Stock: VSB/QAM Inpt Modle Model: DQMx-RF Stock: 6256

8 8 DQMx Series 2.3 Prodct Specification INPUT Connectors ASI modle: 8VSB/QAM modle: Standards ASI: 8VSB: QAM : ASI Mode Transport Rate: 8VSB Mode Tning Range: Data Rate: Bandwidth: Power Level: QAM Mode Tning Range: Data Rate: Bandwidth: Power Level: Impedance: BNC Female F Female DVB-ASI; EN ATSC Digital Television A/53E ITU-T J.83 - Annex A & B (64 and 256 QAM) 270 Mbps (desired transport rate of MSymbols/sec) UHF (NTSC Ch ), VHF (NTSC Ch. 2-13) Mbps 6 MHz -20 to +20 dbmv CATV (NTSC Ch ) 38.8 Mbps (QAM 256); Mbps (QAM 64) Ato Detect 6 MHz -15 to 20 dbmv (@ QAM 256) -20 to 20 dbmv (@ QAM 64) 75 Ω OUTPUT QAM Tning Connector: F Female QAM Modlation Modes: 16, 32, 64, 128, 256, 512, and 1024 DVB Symbol Rate: Freqency Range: NTSC: PAL: Variable; 1 to 7 MSymbols/sec (MBad) 54 to 864 MHz Per channel s nmber from 2 to 135 Per channel s center-freqency (12.5 khz increments) RF Level: +60 dbmv ±1 (120 dbμv ±1) RF Level LCD Screen Error: RF Level Adjstment Range: Freqency Stability: Freqency Tolerance: Amplitde Flatness: Phase Noise: Sprios: Broadband Noise: Impedance: Retrn Loss: Spectral Inversion: Carrier Sppression: SNR: MER: I/Q Phase Error: ± 2 db 50 to 60 dbmv ± 10 khz over 32 to 122 F (0 to 50 C) ± F (25 C) ± 0.25 db (over 6 MHz channel) -98 dbc (@ 10 khz) -60 dbc -75 dbc (@ +60 dbmv otpt level, 4 MHz bandwidth) 75 Ω 12 db Ato Recognition 55 db Greater than 40 db Greater than 40 db Less than 1 degree I/Q Amplitde Imbalance: Less than 1% General Dimensions (W x D x H): Power: Power Dissipation: Weight: Operating Temperatre: Storage Temperatre: Operating Hmidity: Storage Hmidity: 19.0 x 14.3 x 1.75 inches (483 x 363 x 44 mm) 105 to 240 VAC/50 to 60 Hz 36 W (flly loaded with 4 inpt modles) 5.1 lbs (2.31 kg) 32 to 122 F (0 to 50 C) -13 to 158 F (-25 to 70 C) 0 to 95% 35 C max, non-condensation 0 to 95% 35 C max, non-condensation Alarms/Monitoring/Control Local Monitoring: Local Control: Remote Monitoring/Control: Front-panel 16-character, 2-line LCD screen Front-panel Navigational Key-pad Not available

9 DQMx Series 9 Section 3 Installation & Power-p 3.1 Unpacking Yo will find the following items in the box: DQMx Mltiplexer (QTY=1) Power Cord with IEC C13 line socket and 3-pin Type B NEMA 5 Plg (QTY=1) 3.2 Installation The DQMx mltiplexer is designed to be installed in a standard 19-inch (480 mm) rack (EIA 310-D, IEC 60297, and DIN SC48D). To install the encoder, secre its front panel to the rack by inserting for machine screws, with cp washers, throgh the for monting holes in the front panel. DO NOT BLOCK THE UNIT S AIR INTAKE OR AIR DISCHARGE OPENINGS. It is recommended to leave 1 rack nit space (1RU = 1.75 inch = mm) between each encoder to redce heat bild-p in the rack which helps to extend the prodct s life span. FOR SAFE AND RELIABLE OPERATION, THE GROUND PIN OF THE POWER CORD PLUG MUST BE GROUNDED PROPERLY.

10 10 DQMx Series 3.3 Power-p There is no power On-OFF switch on this nit. To trn the nit on or off, simply connect/disconnect the power cord to/from the nit. The nit s power inlet plg is eqipped with a fse-holder and fse. The following seqence of events will take place when the nit is powered-p sccessflly: Initializing MUX Please wait MUX Initialized The nit will then atomatically check for the presence of inpt modles. The LCD displays the following when valid inpts are present: Updating MUX Please wait MUX Otpt Has Been Updated! The display defalts to the "MUX OUTPUT MENU" after 10 seconds of inactivity. More details on the "MUX OUTPUT MENU" can be fond on Section 8. MUX OUTPUT MENU Stats: OK or MUX OUTPUT MENU Overflow Error! The LCD has a backlit featre to illminate the panel. It will light when any of the key-pad bttons are pressed. It will atomatically trn off if no interaction is made after abot 25 seconds.

11 DQMx Series 11 Section 4 Configration 4.1 General Configration and monitoring of the nit is accomplished by tilizing the front-panel LCD and Key-pad. Configration of the nit is accomplished from the five psh-down bttons on the front-panel key-pad: t (L), (R), p (UP), q (DN), and Enter. Diagram 1 depicts the LCD screens and parameters in the main interactive seqence. NO UNIT ADJUSTMENTS ARE PERMITTED IN THE t (L) or (R). ALL MODIFICATION MUST BE PERFORMED IN THE p (UP)/ q (DN) SEQUENCE. 1. Press the t (L) or (R) bttons to switch among different mens. 2. Press the p (UP) or q (DN) bttons to scroll to the desired interactive parameter. 3. When yo arrive at the screen whose parameter needs to be changed, press and hold for abot 2 seconds the ENTER btton ntil the blinking crsor is displayed. 4. Press the p (UP) or q (DN) bttons to increment or decrement to the appropriate desired vale. 5. Press the ENTER btton again to apply the change to the nit's memory. The control board then programs the nit to the new setting. 6. Yo'll see the following confirmation message on the LCD screen: Entry Accepted

12 12 DQMx Series Inpt Modle Men (see section 5 for more detail) t t t t ASI INPUT#1 MENU Stream Present t ASI INPUT#2 MENU Stream Present t 8VSB INPUT# 3 MENU t 8VSB INPUT# 4 MENU t See Next Page IN1:TSID IN2:TSID IN3:TSID IN4:TSID t t t t IN1:MJR Offset 0000 IN2:MJR Offset 0000 IN3:MJR Offset 0000 IN4:MJR Offset 0000 t t t t IN1: PID Offset Ato Offset IN2:PID Offset 0000 IN3:PID Offset 0000 IN4:PID Offset 0000 t t t t IN1: Prog# WBTL-WX IN2:Prog# IN3:Bad Rate MBd/sec IN4:Bad Rate MBd/sec t [1] t t t IN1: Prog# 2 * 6-2 WBTL-SD IN2:Prog# IN4:Channel No. 000 t t t t IN1: Prog# WBTL-HD IN2:Prog# IN3:RF Mode Air Broadcast IN4:RF MODE CATV Standard t t Diagram #1 COMMENTS: This is an example of a nit eqipped with 2 ASI Inpt Modles (inpts 1 & 2), and 2 8VSB/QAM Inpt Modles; one receiving an 8VSB inpt (inpt 3) and the other receiving a QAM inpt (inpt 4). Factory defalt for ASI INPUT men is "NOT FILTERED". Factory defalt vales, when applicable, are highlighted in black in the diagram above. Air Normal Broadcast CATV Standard CATV HRC CAV IRC t IN3:Modlation 8VSB Off-Air 8VSB Normal Off-Air CATV QAM 64B CATV QAM 256B CATV QAM 32A t IN3:Prog#2 5-2 WWOR-D5 t IN3:Prog#1 5-1 WNYW-D5 t t IN4:Prog# WNET-HD t IN4:Prog# WCBS-HD t IN4:Prog# V-ME t IN1:Prog# KIDS t t

13 DQMx Series 13 QAM Men (See section 6 for more detail) RF Otpt Men (See section 7 for more detail) MUX Otpt Men (See section 8 for more detail) t See Previos Page ITU-A I204, J1 I1, J204 I2, J102 I3, J68 I4, J51 I6, J34 I12, J17 I17, J12 I34, J6 I51, J4 I68, J3 I102, J2 ITU-B I128,J1 I128, J2 I64, J2 I128, J3 I32, J4 I128, J4 I16, J8 I128, J5 I8, J16 I128, J6 I4, J32 I128, J7 I2, J64 I128, J8 I1, J128 t QAM MENU Stats: OK QAM: GRAY MODE DAVIC QAM: INTERLEAVE I128, J1 QAM: MODULATION QAM QAM: MODE Normal DAVIC DVB 12% 15% 18% QAM: BAUD RATE MBd/Sec Range: 1 to 6.9 QAM: ENCODE MODE ITU-T Annex B t t t t t t t ITU-T Annex A ITU-T Annex B Normal PRBS 23M PRBS 23 PRBS 15M PRBS 15 Inverted Off [2] t t RF OUTPUT MENU Stats: OK RF: FIRMWARE Version 1.0 RF: OUTPUT LEVEL 60 dbmv Range: 48 to 62 RF: OUTPUT CH# t t t t 2 2 to 135 Standard NTSC HRC IRC t Diagram #1 NOTES: [1] In the Inpt Modle mens "*" means the program was filtered. [2] The Gray Mode is available in ITU-A only. [3] In the MUX OUTPUT men "*" means the program was remapped. t MUX OUTPUT Stats: OK t t t t t MUX:CVCT ENABLE NO MUX:OUT TSID MUX: PSIP ENABLE YES MUX: RESCAN ALL NO MUX: FACTORY DEF NO MUX: VERSION 04:02.04:02.04 t t t t MUX: ADDRESS MUX: Prog# WBTL-WX MUX: Prog# WBTL-HD NO YES YES YES YES MUX: *Prog# WCBS-HD t [3]

14 14 DQMx Series 4.2 Qick Configration 1. Connect desired Inpt Modles: either ASI or 8VSB/QAM. Each inpt modle will ato-detect its corresponding inpt stream. There are no inpt configrations needed for the ASI inpt modle. However, yo mst configre the 8VSB/QAM inpt modle. See section 5 for details. Please pay attention to the maximm inpt bandwidth that the nit and inpt modles can handle. A more detailed gide to maximm inpt bandwidth and otpt bandwidth limitations can be fond in Section Connect the RF otpt F connector to the headend combiner or device of yor choice. 3. Setting Otpt Level: The factory defalt is already set at the maximm otpt signal-to-noise ratio (SNR) of 60 dbmv. It is not recommended to change this setting. However, if yo need to fine-tne the setting, follow these steps. a. Using the t (L) or (R) bttons, navigate to the "RF OUTPUT MENU". b. Using the p (UP) or q (DN) bttons, navigate to the "RF: OUTPUT LEVEL" men. Press and hold for abot 2 seconds the ENTER btton ntil yo see a flashing crsor. Yo can now change the otpt level in 1 db increments by sing the p (UP) or q (DN) bttons. c. Once yo have arrived at the desired otpt level press the ENTER btton. Yo will receive the following confirmation message on the front panel LCD screen: "Entry Accepted" 4. Setting Otpt QAM Channel: a. Using the t (L) or (R) bttons, navigate to the "RF OUTPUT MENU". b. Using the p (UP) or q (DN) bttons, navigate to the "RF: OUTPUT CH#" men. Press and hold for abot 2 seconds the ENTER btton ntil yo see a flashing crsor. Yo can now change the otpt channel by sing the p (UP) or q (DN) bttons. c. Once yo have arrived at the desired otpt channel press the ENTER btton. Yo will receive the following confirmation message on the front panel LCD screen: "Entry Accepted" d. Please see Section 7.2 if a channel plan other than standard NTSC is desired. 5. Eliminating Undesired Program Streams: a. Using the t (L) or (R) bttons, navigate to the Inpt Modle that yo wold like to eliminate program streams from. i. The LCD will display either "ASI INPUT # x" or "8VSB/QAM INPUT # x" depending on the type and qantity of Inpt Modles installed, where "x" is the nmeric position of the Inpt Modle installed in DQMx - namely, 1 throgh 4. ii. For a detailed map of the nit s interactive men, please see Section 4.1. b. When yo have fond the Inpt Modle that yo wold like to eliminate program streams from, se the p (UP) or q (DN) bttons to scroll throgh all of the available program streams on that Inpt Modle. i. The program streams are identified by the program nmber that is inserted into the stream by the content provider. If yo were receiving programming from a broadcast sorce, yo cold expect to see: 1. Program nmber (1, 2, 3 ) 2. The broadcaster s Major- and Minor-channel nmbers, for example: 6-1(major), 6-2(minor), 6-3(minor), Station call letters (WBTL-HD, WBTL-SD, WBTL-WX,...) c. When yo have fond the program nmber that yo wold like to eliminate, press and hold for abot 2 seconds the ENTER btton ntil yo see a flashing crsor. d. Using the p (UP) or q (DN) bttons yo can eliminate the program by making an asterisk appear/disappear in the first position on the second line of the front-panel LCD. When yo have the asterisk displayed on the program stream that yo wish to eliminate, press the ENTER btton. e. Yo will receive several rapid confirmation messages on the front-panel LCD to confirm that the change has taken place and that all of the appropriate otpt tables are being pdated. The final message will be: "MUX Otpt Has Been Updated!". The program stream that was marked with the asterisk will no longer be present in the mltiplexed QAM otpt channel.

15 DQMx Series 15 Section 5 Inpt Modle Men Each Inpt Modle will ato-detect its corresponding inpt stream. The ASI modle reqires no configration. The 8VSB/QAM modle, however, needs to be configred depending on whether the inpt is in 8VSB format (Digital Off-air) or in QAM format (Digital Cable). The factory defalt vales are selected to minimize the necessary configration steps. However, yo can change the factory defalt vale of any of the men options. In this section we provide an explanation of these options, and instrctions on how to change them. 5.1 ASI Inpt Modle: General DQMx will atomatically detect the type of Inpt Modle that is installed on each of its for inpt slots. If an ASI Inpt Modle is detected, then the nit will search for the presence of an inpt stream on that modle and one of the following two messages will appear on the LCD: ASI INPUT# 1 Stream Present or ASI INPUT# 1 Stream Absent If an inpt stream is present, the Inpt Modle will atomatically scan and lock to the inpt stream. Programs, along with their program nmbers, will be displayed on the LCD. Major/Minor channel nmbers and station call letters are also displayed when present. Twelve (12) is the maximm nmber of inpt programs per stream. Filtering of inpt programs is accomplished by selecting a program and pressing the ENTER btton when the asterisk "*" appears. For example, the following is the seqence to filter program #2 on Inpt Modle #1: See Step 5 in Section 4.2 for details. IN1: Prog# WBTL-SD IN1: Prog# 2 * 6-2 WBTL-SD 5.2 ASI Inpt Modle: TSID Parameter This is a read only parameter indicating the Transport Stream Identification (TSID) of the inpt sorce. The FCC has assigned niqe TSID s to all DTV stations and are sed by receivers having advanced navigation featres. 5.3 ASI Inpt Modle: MJR Offset Parameter In addition to remapping of the original Minor-channel nmbers assigned by the broadcaster (see Section 5.2), yo can also remap the original Major-channel nmbers by assigning an MJR Offset vale as follows: 1. Using the t (L) or (R) bttons scroll to the ASI INPUT#x MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to INx: MJR Offset parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the t (L) or (R) and p (UP) or q (DN) bttons to arrive at the desired offset vale (range is integers from -999 to +999). 4. Press the ENTER btton again to apply the change to the nit s memory. Example: If channel nmbers displayed on TV set now are 7-1, 7-2, 7-3, 13-1, 13-2, 13-3 by setting the MJR Offset = 10 (positive 10), then the channel nmbers displayed on the TV will change to 17-1, 17-2, 17-3, 23-1, 23-2, If channel nmbers displayed on TV set now are 7-1, 7-2, 7-3, 13-1, 13-2, 13-3, by setting the MJR Offset = -10 (negative 10), then the channels displayed on the TV will be 7-1, 7-2, 7-3 (not remapped), 3-1, 3-2, 3-3 (remapped). Althogh negative Major Offset vales are allowed, negative Major-channel nmbers are not. If channel nmbers displayed on TV set now are 7-1, 7-2, 7-3, 13-1, 13-2, 13-3, by setting the MJR Offset = 990, then the channel nmbers displayed on the TV will be 997-1, 997-2, (remapped), 13-1, 13-2, and 13-3 (not remapped). Althogh positive Major Offset vales of p to 999 are allowed, Major-channel nmber cannot exceed 999.

16 16 DQMx Series 5.4 ASI Inpt Modle: PID Offset parameter PID (Packet Identifier) vales are embedded by the broadcasters in the MPEG-2 stream to identify, when present, the Minor-channel nmbers that are associated with any of the Major-channel nmbers. The PID Offset featre allows yo to remap the Minor Channel nmbers and the Program Channel nmbers. Two modes are spported for remapping of PID vales: Atomatic and Manal. The Factory defalt vale is Atomatic. In the Atomatic mode, when a dplicate PID vales is detected, the dplicate PID vale is incremented by one. In the Manal mode, yo can assign an offset vale as follows: 1. Using the t (L) or (R) bttons scroll to the 8VSB or ASI INPUT# MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to INx: PID Offset parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the t (L) or (R) and p (UP) or q (DN) bttons to arrive at the desired offset vale (range is integers from to +1023). 4. Press the ENTER btton again to apply the change to the nit s memory. Example: If channel nmbers displayed on TV set now are Major-channel 7-1 and Minor-channels 7-2, and 7-3, by setting the PID Offset = 10 (positive 10), then the channel nmbers displayed on the TV will change to 7-11, 7-12, and If channel nmbers displayed on TV set now are Major-channel 7-1 and Minor-channels 7-2, and 7-3, by setting the PID Offset = -10 (negative 10), then the channels displayed on the TV will remain 7-1, 7-2, and 7-3. Althogh negative PID Offset vales are allowed, negative Minor-channel nmbers are not. When entering a mins offset, a non-zero nmber mst be in the display before the nit allows the - sign to be toggled on. If channel nmbers displayed on TV set now are Major-channel 7-20 and Minor-channels 7-21, and 7-22, by setting the PID Offset = -10 (negative 10), then the channel nmbers displayed on the TV will change to 7-10, 7-11, and Before the PID Offset is applied, the nit will check for dplication across inpts and ato-corrects if necessary. If the Program nmbers received on the inpt are 1, 2 and 3, by setting the PID offset =+10, the program nmbers when viewed on the MUX Otpt Men wold then be "*Prog#11", "*Prog#12", and "*Prog#13". The "*" indicates that the program was remapped. Note that the PID offset affects both the minor channel nmbers and the program nmbers. SOME TV SETS WILL REQUIRE RE-SCANNING IN ORDER TO DISPLAY THE REVISED CHANNEL NUMBER ASSIGNMENTS. NOTE: The CVCT Mode allows the DQMx to set each virtal channel assignment as a one-part three-digit integer channel nmber (major) only for CATV applications (ie: 570 ) compared to the ATSC broadcast two-part format having major and minor channels (ie: 17-3 ). Directions for enabling the CVCT Mode (Cable Virtal Channel Table) are in Sections 8.2 and 8.9. First, there are important steps that mst be performed in this section to ensre that all inpt streams will be maintained consistently after going dark and then retrning or after AC power re-boots. 1. Confirm the CVCT Enable setting is NO (defalt setting). See section Connect all inpt streams and do any stream (program) filtering reqired to limit the otpt to a maximm of 12 programs. 3. Use the Manal Mode PID offset featre on inpts having the same program nmbers as another inpt. WHEN OPERATING THE DQMX IN CVCT MODE: DO NOT USE THE DEFAULT AUTOMATIC SETTING FOR PID OFFSETS BECAUSE AUTOMATIC PID REMAPPING AFTER POWER RE-BOOTS WILL RESULT IN DIFFERENT ASSIGNED PROGRAM NUMBERS. THIS APPEARS TO THE TV AS INCORRECT OR LOST CHANNEL NUMBERS AND MAY ADDITIONALLY REQUIRE TV S TO BE RE-SCANNED IN ORDER TO VIEW THE PROGRAMS. 5.5 ASI Inpt Modle: Program # Parameter This is a read-only parameter indicating for each inpt program its program nmber, the Major/Minor channel nmber, and the station call letters. The maximm nmber of inpt programs per stream is twelve (12). Please see Section 5.1 for procedres on how to filter ot ndesired inpt programs.

17 DQMx Series VSB/QAM Inpt Modle: General DQMx will atomatically detect the type of Inpt Modle that is installed on each of its for inpt slots. If an 8VSB/QAM Inpt Modle is detected, then the nit will search for the presence of an inpt stream on that modle and one of the following two messages will appear on the LCD. 8VSB INPUT# 1 Stream Present or 8VSB INPUT# 1 Stream Absent Programs, along with their program nmbers will be displayed on the LCD. Major/Minor channel nmbers and, when present, station call letters are also displayed. Twelve (12) is the maximm nmber of inpt programs per stream. Filtering of inpt programs is accomplished by selecting a program and pressing the ENTER btton when the asterisk "*" appears. For example, the following is the seqence to filter program #2 on Inpt Modle #1: IN1: Prog# WBTL-SD See Step 5 in Section 4.2 for details. IN1: Prog# 2 * 6-2 WBTL-SD Since the 8VSB/QAM Inpt Modle is capable of receiving inpt in both 8VSB and QAM format, yo mst configre the modle for yor applicable inpts. REGARDLESS OF WHETHER THE INPUT STREAM TO THE 8VSB/QAM MODULE IS IN 8VSB (DIGITAL OFF-AIR) OR IN QAM (DIGITAL CABLE), THE WORD 8VSB IS DISPLAYED ON THE LCD VSB/QAM Inpt Modle: TSID Parameter This is a read only parameter indicating the Transport Stream Identification (TSID) of the inpt sorce. The FCC has assigned niqe TSID s to all DTV stations and are sed by receivers having advanced navigation featres VSB/QAM Inpt Modle: MJR Offset Parameter In addition to remapping of the original Minor-channel nmbers assigned by the broadcaster (see Section 5.10), yo can also remap the original Major-channel nmbers by assigning an MJR Offset vale as follows: 1. Using the t (L) or (R) bttons scroll to the 8VSB INPUT#x MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to INx: MJR Offset parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the t (L) or (R) and p (UP) or q (DN) bttons to arrive at the desired offset vale (range is integers from -999 to +999). 4. Press the ENTER btton again to apply the change to the nit s memory. Example: If channel nmbers displayed on TV set now are 7-1, 7-2, 7-3, 13-1, 13-2, 13-3 by setting the MJR Offset = 10 (positive 10), then the channel nmbers displayed on the TV will change to 17-1, 17-2, 17-3, 23-1, 23-2, If channel nmbers displayed on TV set now are 7-1, 7-2, 7-3, 13-1, 13-2, 13-3, by setting the MJR Offset = -10 (negative 10), then the channels displayed on the TV will be 7-1, 7-2, 7-3 (not remapped), 3-1, 3-2, 3-3 (remapped). Althogh negative Major Offset vales are allowed, negative Major-channel nmbers are not. If channel nmbers displayed on TV set now are 7-1, 7-2, 7-3, 13-1, 13-2, 13-3, by setting the MJR Offset = 990, then the channel nmbers displayed on the TV will be 997-1, 997-2, (remapped), 13-1, 13-2, and 13-3 (not remapped). Althogh positive Major Offset vales of p to 999 are allowed, Major-channel nmber cannot exceed 999.

18 18 DQMx Series 5.9 8VSB/QAM Inpt Modle: PID Offset parameter PID (Packet Identifier) vales are embedded by the broadcasters in the MPEG-2 stream to identify, when present, the Minor-channel nmbers, that are associated with any of the Major-channel nmbers. The PID Offset featre allows yo to remap these original vales if yo wish. Two modes are spported for remapping of PID vales: Atomatic and Manal. The Factory defalt vale is Atomatic. In the Atomatic mode, when a dplicate PID vales is detected, the dplicate PID vale is incremented by one. In the Manal mode, yo can assign an offset vale as follows: 1. Using the t (L) or (R) bttons scroll to the 8VSB INPUT#x MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to INx: PID Offset parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the t (L) or (R) and p (UP) or q (DN) bttons to arrive at the desired offset vale (range is integers from to +1023). 4. Press the ENTER btton again to apply the change to the nit s memory. Example: If channel nmbers displayed on TV set now are Major-channel 7-1 and Minor-channels 7-2, and 7-3, by setting the PID Offset = 10 (positive 10), then the channel nmbers displayed on the TV will change to 7-11, 7-12, and If channel nmbers displayed on TV set now are Major-channel 7-1 and Minor-channels 7-2, and 7-3, by setting the PID Offset = -10 (negative 10), then the channels displayed on the TV will remain 7-1, 7-2, and 7-3. Althogh negative PID Offset vales are allowed, negative Minor-channel nmbers are not. When entering a mins offset, a non-zero nmber mst be in the display before the nit allows the - sign to be toggled on. If channel nmbers displayed on TV set now are Major-channel 7-20 and Minor-channels 7-21, and 7-22, by setting the PID Offset = -10 (negative 10), then the channel nmbers displayed on the TV will change to 7-10, 7-11, and Before the PID Offset is applied, the nit will check for dplication across inpts and ato-corrects if necessary. SOME TV SETS WILL REQUIRE RE-SCANNING IN ORDER TO DISPLAY THE REVISED CHANNEL NUMBER ASSIGNMENTS. NOTE: The CVCT Mode allows the DQMx to set each virtal channel assignment as a one-part three-digit integer channel nmber (major) only for CATV applications (ie: 570 ) compared to the ATSC broadcast two-part format having major and minor channels (ie: 17-3 ). Directions for enabling the CVCT Mode (Cable Virtal Channel Table) are in Sections 8.2 and 8.9. First, there are important steps that mst be performed in this section to ensre that all inpt streams will be maintained consistently after going dark and then retrning or after AC power re-boots. 1. Confirm the CVCT Enable setting is NO (defalt setting). See section Connect all inpt streams and do any stream (program) filtering reqired to limit the otpt to a maximm of 12 programs. 3. Use the Manal Mode PID offset featre on inpts having the same program nmbers as another inpt. WHEN OPERATING THE DQMX IN CVCT MODE: DO NOT USE THE DEFAULT AUTOMATIC SETTING FOR PID OFFSETS BECAUSE AUTOMATIC PID REMAPPING AFTER POWER RE-BOOTS WILL RESULT IN DIFFERENT ASSIGNED PROGRAM NUMBERS. THIS APPEARS TO THE TV AS INCORRECT OR LOST CHANNEL NUMBERS AND MAY ADDITIONALLY REQUIRE TV S TO BE RE-SCANNED IN ORDER TO VIEW THE PROGRAMS VSB/QAM Inpt Modle: Bad Rate parameter Bad Rate (or modlation rate) is the nmber of distinct symbol (or signaling) changes made to the QAM transmission medim per second. The measrement nit is typically in Mega Bads (MBd) which is synonymos to Mega symbols per seconds (Msps). It follows then, that the Bad Rate is dependent on the selection of the QAM modlation modes referenced in Section 5.5. The nit atomatically assigns the appropriate Bad Rate for each QAM modlation type, for example: The assigned Bad Rate is MBD, when CATV QAM 64B is selected. The assigned Bad Rate is MBD, when CATV QAM 256B is selected.

19 DQMx Series 19 It is not recommended to change the above assigned vales, however, to change the factory defalt vale, follow these steps: 1. Using the t (L) or (R) bttons scroll to the 8VSB INPUT#x MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to INx: Bad Rate parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the t (L) or (R) and p (UP) or q (DN) bttons to inpt the desired Bad Rate the range is 1 to 6.9 MBd. 4. Press the ENTER btton again to apply the change to the nit s memory VSB/QAM Inpt Modle: Channel No parameter YOU MUST ENTER THE DTV CHANNEL NUMBER, NOT THE NTSC CHANNEL NUMBER. FOR EXAMPLE, TO LOCK INTO NEW YORK CITY'S NTSC CHANNEL 2 (WCBS-TV), YOU MUST ENTER DTV CHANNEL 33. PLEASE CONSULT THE "FINAL DTV" CHANNEL NUMBERING ISSUED BY FFC FOR DETAILS. To enter a channel nmber, follow these steps: 1. Using the t (L) or (R) bttons scroll to the 8VSB INPUT#x MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to Channel No parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the t (L) or (R) and p (UP) or q (DN) bttons to inpt the desired channel nmber (for example, yo mst enter 033 for channel 33). 4. Press the ENTER btton again to apply the change to the nit s memory VSB/QAM Inpt Modle: RF Mode parameter Five (5) RF modes are spported by this modle: Air Broadcast, CATV Standard, CATV HRC, CATV IRC, Freqency. Factory defalt vale is Air Broadcast this is consistent with the factory defalt vale for the Modlation parameter which is 8VSB Off-Air (See section 5.5 above). To change the factory defalt vale, follow these steps: 1. Using the t (L) or (R) bttons scroll to the 8VSB INPUT#x MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to INx: RF Mode parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the p (UP) or q (DN) bttons to arrive at the desired RF mode. 4. Press the ENTER btton again to apply the change to the nit s memory VSB/QAM Inpt Modle: Modlation parameter Seven (7) inpt standards are spported by this modle: 8VSB Off-Air, CATV QAM 64B, CATV QAM 256B, CATV QAM 32A, CATV QAM 64A, CATV QAM 128A, and CATV QAM 256A. Factory defalt vale is 8VSB Off-Air. To change the factory defalt vale, follow these steps: 1. Using the t (L) or (R) bttons scroll to the 8VSB INPUT#x MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to INx: Modlation parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the p (UP) or q (DN) bttons to arrive at the desired modlation type. 4. Press the ENTER btton again to apply the change to the nit s memory VSB/QAM Inpt Modle: Program # Parameter This is a read-only parameter indicating for each inpt program its program nmber, the Major/Minor channel nmber, and the station call letters. The maximm nmber of inpt programs per stream is twelve (12). Please see Section 5.5 for procedres on how to filter ot ndesired inpt programs.

20 20 DQMx Series Section 6 - QAM Men 6.1 General The QAM MENU allows yo to configre the QAM otpt of the nit. The seven (7) possible configrable parameters shown in Section 4.1 are explained in detail in this section. However, the following two stats messages are applicable when yo are in the "QAM MENU": "Stats: OK" Inpt program streams are present and all otpt parameters are set and operating correctly. "Stats: MUTE" Indicates that there are NO streams present on any inpt modles while the QAM Mode is set to "Normal" or "Inverted". To redce broadband noise in the system, the nit disables the QAM otpt when there are no inpt streams present. QAM MENU Stats: OK or QAM MENU Stats: CommError! 6.2 QAM Men: Gray Mode parameter Gray codes are sed to improve error correction. For example, in QAM modlation, the signal's constellation diagram is arranged so that the bit patterns conveyed by adjacent constellation points differ by only one bit. By combining this with FEC capable of correcting single-bit errors, it is possible for a receiver to correct any transmission errors that case a constellation point to deviate into the area of an adjacent point. This makes the transmission system less ssceptible to noise. Two (2) options, only when Encode Mode is ITU-T Annex A, are available: DAVIC and DVB. The factory defalt is DAVIC. It is not recommended to change the above assigned vale, however, to change the factory defalt vale, follow these steps: 1. Using the t (L) or (R) bttons scroll to the QAM MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to QAM: GRAY Mode parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the p (UP) or q (DN) bttons to arrive at the desired vale. 4. Press the ENTER btton again to apply the change to the nit s memory. 6.3 QAM Men: Interleave parameter Interleaving is a techniqe sed in conjnction with FEC (Forward Error Correction) to correct for the QAM errors that are indced by brst noise. The nit employs a convoltional interleaver. Most television sets eqipped with a QAM tner se the factory defalt interleaving scheme. However, some QAM set-top boxes may se an interleaving scheme different from or factory defalt vale. To change the factory defalt vale, follow these steps: 1. Using the t (L) or (R) bttons scroll to the QAM MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to QAM: Interleave parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the p (UP) or q (DN) bttons to arrive at the desired vale. 4. Press the ENTER btton again to apply the change to the nit s memory. 6.4 QAM Men: Alpha parameter The QAM passband spectrm is shaped by root raised cosine filtering with a roll-off factor Alpha. Three (3) options are available: 12%, 15%, and 18%. The factory defalt is 12%. When Encode Mode = ITU-T Annex B, and the Modlation = CATV QAM 256B, the recommended ALPHA vale is 12%. When Encode Mode = ITU-T Annex B, and the Modlation = CATV QAM 64B, the recommended ALPHA vale is 12%. When Encode Mode = ITU-T Annex A the recommended ALPHA vale 15%. It is not recommended to change the above assigned vales, however, to change the factory defalt vale, follow these steps: 1. Using the t (L) or (R) bttons scroll to the QAM MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to QAM: ALPHA parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the p (UP) or q (DN) bttons to arrive at the desired vale. 4. Press the ENTER btton again to apply the change to the nit s memory.

21 DQMx Series QAM Men: Bad Rate parameter Bad Rate (or modlation rate) is the nmber of distinct symbol (or signaling) changes made to the QAM otpt transmission medim per second. The measrement nit is typically in Mega Bads (MBd) which is synonymos to Mega symbols per seconds (Msps). It follows then, that the Bad Rate is dependent on the selection of the QAM modlation modes referenced in Section 6.4. The nit atomatically assigns the appropriate Bad Rate for each QAM modlation type, for example: The assigned Bad Rate is MBd, when CATV QAM 64B is selected. The assigned Bad Rate is MBd, when CATV QAM 256B is selected. It is not recommended to change the above assigned vales, however, to change the factory defalt vale, follow these steps: 1. Using the t (L) or (R) bttons scroll to the QAM MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to QAM: Bad Rate parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the t and pq bttons to arrive at the desired mode the range is 1 to 6.9 MBd. 4. Press the ENTER btton again to apply the change to the nit s memory. 6.6 QAM Men: Modlation parameter Seven (7) options are available: 16, 32, 64, 128, 256, 512, and The factory defalt is 256. To change the factory defalt vale, follow these steps: 1. Using the t (L) or (R) bttons scroll to the QAM MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to QAM: Modlation parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the p (UP) or q (DN) bttons to arrive at the desired mode. 4. Press the ENTER btton again to apply the change to the nit s memory. 6.7 QAM Men: Encode Mode parameter Two (2) options are available: ITU-T Annex A, and ITU-T Annex B. The factory defalt is ITU-T Annex B. ITU-T Annex A is sed mostly with the PAL television standard, and ITU-T Annex B is sed mostly with the NTSC television standard. To change the factory defalt vale, follow these steps: 1. Using the t (L) or (R) bttons scroll to the QAM MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to QAM: Encode Mode parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the p (UP) or q (DN) bttons to arrive at the desired mode. 4. Press the ENTER btton again to apply the change to the nit s memory. 6.8 QAM Men: Mode parameter Eight (8) options are available: Normal, PRBS15, PRBS15M, PRBS23, PRBS23M, Inverted, Off, and CW. The factory defalt is Normal. The for (4) Selftest modes, denoted PRBS (Psedo Random Binary Seqence), are only applicable for testing prposes, and mst not be selected when operating the encoder for its intended se. The Inverted option inverts the QAM otpt spectrm. The Off option trns off the QAM otpt of the encoder no otpt will be available. The CW (Carrier Wave) option is only applicable for testing prposes, and mst not be selected when operating the encoder for its intended se. See Appendix A for details. For normal operation, the mode mst be Normal, however, to change the factory defalt vale, follow these steps: 1. Using the t (L) or (R) bttons scroll to the QAM MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to QAM: Mode parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the p (UP) or q (DN) bttons to arrive at the desired QAM mode. 4. Press the ENTER btton again to apply the change to the nit s memory.

22 22 DQMx Series Section 7 - RF Otpt Men 7.1 General The RF OUTPUT MENU allows yo to configre the RF otpt of the nit. The three (3) possible configrable parameters shown in Section 4.1 are explained in detail in this section. However, the following stats messages are applicable when yo are in the "RF OUTPUT MENU": Stats: OK the RF Otpt is fnctioning correctly. Stats: CommError! there is probably a hardware or firmware malfnction. Please call Tech or ext Stats: Error #1 same as above. Stats: Error #2 same as above. Stats: Error #3 same as above. 7.2 RF Men: Firmware parameter This is a read-only parameter and displays the firmware version of the nit s QAM pconverter modle. 7.3 RF Men: Otpt Level parameter Allows yo to select the otpt power level, measred in dbmv, in 1 db increments. The range is 48 to 62 dbmv. Factory defalt vale is 60 dbmv. THE OUTPUT LEVEL ADJUSTEMENTS ARE RECOMMENDED ONLY FOR FINE-TUNING, however, to change the factory defalt vale, follow these steps: 1. Using the t (L) or (R) bttons scroll to the OUTPUT MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to RF: OUTPUT LEVEL parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the p (UP) or q (DN) bttons to arrive at the desired vale. 4. Press the ENTER btton again to apply the change to the nit s memory. 7.4 RF Men: Otpt Channel # parameter Allows yo to select the pconverted QAM otpt NTSC channel nmber. The range is 2 to 135. Factory defalt vale is 2. To change the factory defalt vale, follow these steps: 1. Using the t (L) or (R) bttons scroll to the OUTPUT MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to RF: OUTPUT CHANNEL # parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the t (L) or (R) and p (UP) or q (DN) bttons to arrive at the desired vale. 4. Press the ENTER btton again to apply the change to the nit s memory. 7.5 RF Men: Otpt Mode parameter For (4) options are available: Standard NTSC, HRC, IRC, Freqency. The factory defalt is Standard NTSC. The HRC (Harmonically Related Carrier) and IRC (Incrementally Related Carrier) options are for signals with off-center carrier center-freqency. The Freqency option allows to select any desired freqency in 12.5 khz increments. To change the factory defalt vale, follow these steps: 1. Using the t (L) or (R) bttons scroll to the RF OUTPUT MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to RF: OUTPUT MODE parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the p (UP) or q (DN) bttons to arrive at the desired vale. 4. Press the ENTER btton again to apply the change to the nit s memory.

23 Section 8 - MUX Otpt Men DQMx Series General The MUX OUTPUT MENU allows yo to obtain information abot the mltiplexed otpt stream, and displays the hardware and firmware versions of the nit. The following stats messages are applicable when yo are in the "MUX OUTPUT MENU": Stats: OK inpt program streams are present, and all otpt parameters are configred correctly. Stats: No Inpt Indicates that there are NO streams present on any inpt modles while the QAM Mode is set to "Normal" or "Inverted". To redce broadband noise in the system, the nit disables the QAM otpt when there are no inpt streams present. Stats: Overflow Error! Indicates that total otpt bandwidth exceeds the maximm data rate for the "QAM Mode" and "Modlation" parameters that have been selected. The maximm data rate that can be transported in 256 QAM otpt is approximately 38.8 Mbps. See Section 9 for more details. 8.2 MUX Otpt: "CVCT Enable" parameter The DQMx defalt setting is No. When this mode is enabled (yes selected), major and minor channel nmbers and names can be added or edited nder the MUX Otpt / Program # ( Section 8.9) men. The DQMx creates and maintains the CVCT (cable virtal channel table) and MGT (master gide table) in this mode. BEFORE ENABLING CVCT VERIFY THAT: ALL INPUT STREAMS ARE CONNECTED AND REQUIRED PROGRAM FILTERING TO ENSURE A MAXIMUM OF 12 PROGRAMS HAS BEEN DONE. SEE SECTIONS 4.2.5, 5.1 AND 5.6 FOR PROGRAM FILTERING INSTRUCTIONS. PID OFFSETS HAVE BEEN MANUALLY ASSIGNED TO PREVENT DUPLICATE PROGRAM NUMBERS. THE DEFAULT AUTO PID SETTING SHOULD NOT BE USED WITH THE CVCT FEATURE BECAUSE DATA ERRORS WILL OCCUR FROM DIFFERENT PROGRAM NUMBERS BEING AUTOMATICALLY ASSIGNED AFTER AC POWER CYCLING. ERRORS MAY APPEAR AS DIFFERENT DISPLAYED CHANNEL NUMBERS OR COMPLETELY LOST PROGRAMS REQUIRING USERS TO RE-SCAN THEIR TV S. SEE SECTIONS 5.4 & 5.9 FOR DETAILS. 8.3 MUX Otpt: "Ot TSID" parameter User can set a Transport Stream Identification nmber by pressing the ENTER btton ntil a blinking crsor is displayed. Using the navigation bttons, set the desired TSID and then press ENTER to save the change. The defalt TSID nmber is MUX Otpt Men: PSIP Enable parameter Allows ser to trn on/off extended PSIP tables on the otpt stream. Depending on the sorce of inpt streams, some may have PSIP and others will not. The merged otpt will only contain info on the channels that had PSIP and cold reslt in a set of tables not containing programming details for every channel. This can be a problem for some MPEG decoders and therefore need the option of trning off these tables. When "CVCT" is enabled "PSIP" enabled is forced to "No". Likewise when CVCT is set to "No", PSID is enabled "Yes". 8.5 MUX Otpt Men: Rescan All parameter Allows yo to rescan all inpt streams. All crrent configration vales will remain the same. To rescan all inpt stream, follow these steps: 1. Using the t (L) or (R) bttons scroll to the MUX OUTPUT MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to Rescan All parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the p (UP) or q (DN) bttons to arrive at the YES vale. 4. Press the ENTER btton again to apply the change to the nit s memory.

24 24 DQMx Series 8.6 MUX Otpt Men: Factory Defalt parameter Allows yo to erase all crrent configration vales and to restore them to factory defalt vales shown in Section 4.1. To restore all configrations vales to the factory defalt vales, follow these steps: 1. Using the t (L) or (R) bttons scroll to the MUX OUTPUT MENU. See Section 4.1 for details. 2. Using the p (UP) or q (DN) bttons scroll to Factory Defalt parameter. 3. Press on the ENTER btton ntil the blinking crsor is displayed. Press the p (UP) or q (DN) bttons to arrive at the YES vale. 4. Press the ENTER btton again to apply the change to the nit s memory. 8.7 MUX Otpt Men: Version parameter This is a read-only parameter and displays the nit s firmware version, for example: 04:02.04: MUX Otpt Men: Address parameter This is a read-only parameter and displays the nit s niqe factory-assigned address. 8.9 MUX Otpt Men: Program #X parameter CVCT Enabled = No When CVCT (8.2) is not enabled, this is a read-only parameter. The program #, the Major/Minor channel #, and channel's call letters are displayed when available. See Sections 5.1 and 5.6 for information on filtered programs shold any desired programs not appear on the otpt. Twelve (12) is the maximm nmber of otpt programs. Merged PSI/PSIP tables are atomatically generated when a stream is added to the inpt modles. Tables are also pdated atomatically when a new stream or table revision is detected. An asterisk "*" indicates that the program was remapped as shown in the example below. MUX:Prog #1 6-1 WBTL-HD MUX:*Prog #2 6-2 WBTL-SD (Not Remapped) (Remapped) CVCT Enabled = Yes When CVCT is enabled, major/minor channel # s and the channel s call letters or name can be changed by navigating to the desired program nmber, pressing enter ntil the crsor blinks and making changes with the p, down, left and right arrow keys. Once the desired changes have been made, press enter again to save them. Allowable entries are as follows: Major Channel: 1 thr 999 Minor Channel: 0 thr 999 Note that setting the minor channel to 0 (zero) will make the television receiver display only the major channel nmber. CATV digital channel designations se a three-part integer channel nmber as this (29, 570, etc) in comparison to the ATSC broadcast standard with major and minor channels (2-1, 2-2 etc.). See NOTE in sections 5.4 & 5.9 concerning PID offsets when CVCT is enabled. IMPORTANT SEE NOTES IN SECTIONS 5.4 AND 5.9 CONCERNING THE NEED TO USE THE MANUAL PID OFFSET SETTING WHEN USING THE CVCT MODE TO AVOID POTENTIAL UNIT OPERATIONAL PROBLEMS AFTER POWER CYCLING.

25 DQMx Series 25 Section 9 Freqently Asked Qestions 1. Qestion: What is the maximm nmber of inpt program streams per inpt modle and per DQMx? Answer: The maximm nmber of inpt program streams per inpt modle is 12, with a maximm of 48 program streams per flly loaded (4 Inpt Modles) DQMx. 2. Qestion: What is the maximm inpt data rate per modle and per DQMx? Answer: The inpt data rate is dependent on program content. The 270Mbps ASI physical interface exceeds the 38.8 Mbps for QAM Qestion: What happens when more than 12 inpt program streams are presented to an inpt modle? Answer: The additional program streams are not recognized by the DQMx and cannot be mltiplexed on to the QAM otpt. 4. Qestion: What is the maximm nmber of mltiplexed program streams and the maximm data rate that can be otpt? Answer: The maximm nmber of mltiplexed program streams capable of being otpt is 12, and the total data rate of these 12 program streams cannot exceed approximately 19.4 Mbps for a QAM 64 modlation, or 38.8 Mbps for a QAM 256 modlation. 5. Qestion: What happens when the maximm nmber of mltiplexed program streams or the maximm otpt data rates are exceeded? Answer: Any programs in excess of 12 that have been selected for otpt will not be mltiplexed. If the aggregate data rate of all the mltiplexed program streams exceeds 38.8 Mbps, tiling will occr on all mltiplexed program streams. It is common for all data rates to flctate or brst in conjnction with the complexity of the program stream s video content. Factors that contribte to bandwidth brsting are: a. High contrast levels b. Motion c. Complexity of visal textres 6. Format Qestion: Are there any data rate standards that can be sed in order to properly plan the mltiplexed otpt? Answer: The table below can be sed as a rogh gideline. Definition Typical Brsting MPEG-2 Standard 3 4 Mbps 6 Mbps MPEG-2 High 12 Mbps 17 Mbps MPEG-4 Standard Mbps 3 Mbps MPEG-4 High 6 Mbps 10 Mbps

26 26 DQMx Series Freqently Asked Qestions (contined) 7. Qestion: What happens if a programmed, operational DQMx loses power? Answer: The nit has a non-volatile memory that stores all of nit settings so that it can resme normal operation after going throgh its reboot seqence. Crrently, PIDs are not stored in non-volatile memory. This implies that remapping will occr pon power-p. 8. Qestion: What if the ASI inpt sorces do not have any PSIP information to set the major/minor channel nmbers and short names? Answer: These fields will be blank. Programs will only be identified by their MPEG program nmbers. 9. Qestion: What if the program data in ASI streams change? (Example: set-p with stream 1 containing 4 fixed programs then one or more drop, and/or drop and add at different times). Answer: Stream is remapped pon detection of a new PAT or PMT. Changes in the stream content are conveyed with new versions of the PAT/PMT tables. The nit atomatically remaps pon detection of a table version pdate. 10. Qestion: What if the program data changes locations? (program 1 on stream 1 now becomes program 3 on stream 1 and program 1 is black screen). Answer: Stream is remapped pon detection of a new PAT or PMT. Changes in the stream content are conveyed with new versions of the PAT/PMT tables. The nit atomatically remaps pon detection of a table version pdate. 11. Qestion: What if error messages occr? Answer: "MUX Otpt Error": "Stats: CommError!": There is an internal hardware error. "Stats: CfgError": "Stats: NotLocked": Dring the boot-p seqence, if the following message shold appear on the LCD screen and not go away, there is an internal hardware error. This error may appear if the Bad Rate has been manally changed from the standard defalt settings shown in Section 4.1 If the Bad Rate is correct for the QAM Mode and Modlation scheme selected in the nit, then yo need to retrn the nit for repairs. There is an internal hardware error. Yo can reach or or ex

27 DQMx Series 27 Appendix A: Measring the QAM Otpt Signal Level To ensre that the QAM otpt power level indicated on the LCD screen is indeed accrate, yo can also measre the tre eqivalent signal level for the QAM carrier sing the CW (Carrier Wave) signal. The nit is capable of spplying the CW signal which simplifies the measrement process becase the otpt level does not need to be adjsted for the bandwidth setting limitations of the spectrm analyzer. Once the QAM mode is set at CW (please see Section 6.2 for instrctions), then any meter that can measre CW power level can be sed to compare the otpt level entered via the key-pad and the CW power level which is eqal to the tre QAM power level that will be presented in the NORMAL mode. The diagram below shows the measrement made on a typical nit when the otpt level was selected at 60 dbmv sing the key-pad. The actal measred otpt (in CW mode) is dbmv.