Appendix B. Eb/No, Measurement | Premier Mounts CDM-600 guide

Appendix B. Eb/No

MEASUREMENT

Although the CDM-600 calculates and displays the value of receive Eb/No on the front panel of the unit, it is sometimes useful to measure the value using a spectrum analyzer, if one is available.

B–1

Image 219

Premier Mounts CDM-600 specifications Appendix B. Eb/No, Measurement

Contents

Revision CDM-600Page Errata a APP= APP? APP# Errata B Errata C +40 dBc maximum composite, up to -10 dBm, absolute max Input power range CDM-570 Desired Carrier -30 to -60 dBm Filename Terrata BER=10-8 DB 4.2 dB DB 6.8 dB DB 7.9 dB BER=10-5 DB 4.0 dB DB 6.6 dB DB 7.7 dB Comtech Turbo Product Codec AGC Voltage Errata F \tpubs\manuals\releasedword\modems\cdm600rev7\errata f.doc Errata G \tpubs\manuals\releasedword\modems\cdm600rev7\errata g.doc \tpubs\manuals\releasedword\modems\cdm600rev7\errata g.doc This page intentionally left blank Part Number MN/CDM600.IOM MN/CDM600.IOM Table of Contents MN/CDM600.IOM External Frequency Reference Connector J12CDM-600 Satellite Modem Preface Front Panel Operation Forward Error Correction Options 10-3 10.110-1 10.2 10-6 Buffer Enabled, Rxtx TX Terrestrial or External Clock12.2.3 Alarm 12-3 12.2.4 10.3 10-3 10.4 15.3 13.515.1 Modulator 15-1 15.2 15-3 Appendix D. ODU Operation Tables Figures Preface Customer Service Reporting Comments or Suggestions Concerning this Manual About this ManualConventions and References Metric Conversion Recommended Standard Designations Electrical Safety FusesEnvironmental Telecommunications Terminal Equipment Directive Installation EMC Electromagnetic Compatibility Disclaimer Warranty PolicyLimitations of Warranty Exclusive Remedies CDM-600 Introduction Aupc Standard Features Software Flash Upgrading VerificationData Interfaces Assembly Description Major AssembliesFast Options and Hardware Options Order to operate in Turbo TPC Mode Fast Accessible Options Fast System TheoryImplementation Hardware Options Compatibility Supporting Hardware and Software New in this Release This page is intentionally blank Unpacking Installation Optional Mounting Kit , KT/6228-2 Mounting Installation of the Optional Mounting Bracket, KT/6228-2 Configuration Select Internal if LoopConnect External Cables Functional Description CDM-600 Modem Block Diagram Physical IntroductionFront Panel IEC Line Input Connector Name Ref Des Connector Type FunctionRear Panel External Reference Connector J9 Rx and Tx if Connectors J1 and J2Overhead Data Connector P3A Data Interface Connector P3B Auxiliary Serial Connector P6 Remote Control connector P4BIDR Alarm connector P5A Form C Traffic Alarm Connector P5B 12 IDI, DDO Connectors J10A and J11A External Frequency Reference Connector J12Unbalanced G.703 Tx/Rx J10B and J11B Dimensional Envelope Dimensional Envelope Connector Overview Connector Overhead Interface Connector Pin Assignments BNC ConnectorsOverhead Interface Connector P3A BNC Connectors RR B Data Interface Connector Pin Assignments Remote Control Interface Connector Pin Assignments Audio Interface Connector P4ARemote Control Interface Connector P4B Audio Interface Connector Pin Assignments Alarm Interface Connector Pin Assignments IDR Backward Alarms Connector P5AUnit Alarms P5B IDR Alarm Interface Connector Pin Assignments Auxiliary Serial Connector USB Type B Socket 10. Balanced G.703 Interface Connector Pin AssignmentsPin # Signal Function Name Direction AC Power Connector Ground ConnectorAC Power Specifications This page is intentionally left blank Description Front Panel Front Panel LED Indicators LEDColor Condition Selection Function of these keys is as followsEnter Clear Menu Trees Comtech CDM-600E Open Network Modem Turbo TPC/LDPC VER Opening ScreenMain Menu Comtech CDM-600 Open Network Modem Turbo TPC/LDPC VER Config ALL = Start STOP, Start Config ALLConfig Mode Mode TX=RS422NONE TX-IF Carrier = on ON,OFF,RTI Config TXConfig TX TX-IF TX-IF Power Encoder MOD Data Scrambler Output Power Mode = Aupc MANUAL,AUPC Config TX PowerOutput Power Mode = Manual MANUAL,AUPC Output Power Level = -20.0 dBm TPC Turbo Hardware option Config TX Encoder REED-SOLOMON Encoding = ON200/180 Config TX Encoder REED-SOLOMON on Config TX Modulation MODULATION= Qpsk B,Q,OQ-PSKFEC Rate = 1/2 1/2,3/4,7/8 TX Scrambler = on ON,OFF Frame Scrambler Config TX DataConfig TX Scrambler Data Invert = OFF ON,OFF Config RX RX-IF Config RX Config RX Decoder REED-SOLOMON Decoding = ON200/180 Config RX Decoder REED-SOLOMON on FEC Rate = 1/2 3/4,7/8 Config RX DemodulationConfig RX Data Demodulation = QPSKB,Q,OQ,8PSK,16QAM RX Descrambler = on ON,OFF Frame Descrambler Config RX Descrambler Clocking TX-CLOCK Config RX EbNoConfig Clocks Config Clocks TX Clock Configclocks RX BUFFER/CLOCK CLK= RX-SAT RX-SAT,TX-TERR,EXT-CLK,INSBUFFER-SIZE = 00016bytes00002ms Center Config Clocks Internal Reference Config Clocks RX BUFFER/CLOCK CenterConfig Clocks EXT-BASEBAND-CLOCK Config Clocks EXT-FREQ-REF DRP-CH 1 2 3 TS 01 02 03 Config Drop & InsertConfig Drop & Insert Drop Channel Timeslots DRP-TYPE= T1-D4 CHAN/TS LOOP=Y Y/N INS-TYPE= T1-D4 CHAN/TS Edmac Mode = Master IDLE/MASTER/SLAVE Edmac Address = Config Drop & Insert Insert Channel TimeslotsConfig Edmac Config Misc VOLUME= Config Misc G.703 CodeConfig Misc IDR-ESC-TYPE Config Misc Adpcm Audio Volume INSTANT-ON,DELAY Config Misc HIGH-RATE-ESCConfig Misc WARM-UP HIGH-STAB Reference POWER-UP WARM-UP No DELAYINSTANT-ON Onfig Remote Control Interface Config Remote Control Configure Alarm Mask AIS Buffer Rxif SAT-ALM TERR-ALM Config Remote Control Char FormatConfig Mask Config Mask AIS Config Mask Satellite Alarms TX Config Mask Buffer SlipConfig Mask RX-IF Config Mask Satellite Alarms Config Statistics Config Mask Satellite Alarms RXConfig Mask TERR-ALM Config Impedance Test Modem Test Mode = Normal NORM,TX-CW,TX-1/0,IF↓,RF↓,DIG↓,I/O↓ Loopback Modes Info ID Info ModeInformation Infoall Bottom line Info TXInfo RX Top Line Info Insert Type Info ClocksInfo Edmac Info Drop Type Info Alarms Mask Info RemoteInfo Misc Monitor Monitor LIVE-ALARMSLive UNIT= None NET= Alarms RECV=DEMOD Lock XMT= Hi-Stab Freq Ref Module Ref Activity Fault Network Monitor Stored EventsStored Events Clear ALL no NO,YES #199 FT-FRAME Sync 23/07/01 Monitor Statistics Monitor AUPC-PARAMS AUPC-PARAMS Remote EbNo=6.8dB Transmit Power INCREASE=1.2dBConfiguration 0 Load Store Available Monitor RX Parameters Utilities Brightness STORE/LOAD Override ConfigurationUtilities Utilities SET-RTC Utilities 11 Manual Switch Utilities LampUtilities Circuit ID Fast View 7 ODUFast Fast SET Viterbi Forward Error Correction Options Sequential Viterbi Decoding SummaryFor Against Sequential Decoding Summary Reed-Solomon Outer Codec Concatenated RS Coding Summary Code Rate Mode PSK/TCM Coding Summary Trellis Coding Fast Option TPC and Low Density Parity Check Ldpc coding Introduction Turbo Product Codec Hardware Option Ldpc versus TPC Available TPC and Ldpc Modes TPC Code Rate/Modulation Data Rate RangeLdpc Code Rate/Modulation Data Rate Range End-to-End Processing Delay Turbo Product Coding Processing Delay ComparisonFEC Mode 64 kbps data rate End-to-end delay, ms Qpsk Rate 1/2 Viterbi TPC and Ldpc Summary Uncoded Operation No FEC MN/CDM600.IOM Viterbi Sequential Decoding Sequential Sequential Decoding 2048 kbps Viterbi with With PSK/TCM Rate 2/3 Performance with CDM-600 Firmware Version Or higher Rate 3/4 QPSK/OQPSK Rate 7/8 QPSK/OQPSK Rate 1/2 QPSK/OQPSK Comtech Turbo Product Codec Rate 21/44 Bpsk 220,200 RS Differential Encoding LDPC, BPSK, Qpsk QPSK/OQPSK/8-PSK QPSK/OQPSK Ldpc Rate 3/4 PSK/16-QAM This page is intentionally blank Offset Qpsk Operation CDM-600 Satellite Modem Revision Offset Qpsk Operation IBS Open Network Operations IBS Scrambling IBS Clock/data recovery and De-jitterIBS Engineering Service Channel IBS Framing 2 D&I Framing 1 D&I Primary Data Interfaces Ccitt G.721 IDR IDR Primary Data Interfaces IDR Engineering Service Channel This page is intentionally blank Clock Modes and Drop and Insert D&I Transmit ClockingInternal Clock External Clock Tx TerrestrialRx Loop-Timed, RX=TX Rx Loop-Timed, Rxtx Asymmetric Loop Timing Receive Clocking Buffer Disabled RX SatelliteBuffer Enabled, TX=RX TX Terrestrial or External Clock Buffer Enabled, Rxtx TX Terrestrial or External Clock Tx Clock Modes Rx Clock Modes 10-6 Supported T1 and E1 Framing formats Frame Formats Time Slot Selection Drop and Insert Clocking Drop and Insert Clocking Rx Buffer Clock = Insert D&I only Single-Source Multiple ModemsReceive Transmit Single-Source Multiple Modems Daisy Chain 10-12 Theory Of Operation Edmac Channel 11.2 M&C Connection Setup Summary Drop & Insert ++ Automatic Uplink Power Control Setting Aupc Parameters Target Eb/NoMax Range Alarm Demod UnlockCompensation Rate Monitoring Overhead Details ESC++ Effect on Eb/No performance Available Baud Rates Flash Upgrading CDM-600 Satellite Modem Revision Flash Upgrading Modulator Summary of Specifications CDM-600 Satellite Modem Revision Summary of Specifications Comtech EF Data CDM-600 Transmit Power Spectral Density Referred to symbol rate 15-4 Codec BER CDM-600 Satellite Modem Revision Remote Control Data Interfaces Automatic Uplink Power Control Data Rate Ranges Front panel Miscellaneous 15-10 EIA-485 Remote Control Basic Protocol EIA-232 Packet Structure Start Of PacketAddress Instruction Code Qualifier Instruction Code End Of Packet Message Arguments Alphabetical list of Remote Commands TFQ# TFQ=TFQ= TFQ? TFQ TFT# TFT=TFT= TFT? TFT TCR# TCR=TCR= TCR? TCR TRS# TRS=TRS= TRS? TRS TXO# TXO=TXO= TXO? TXO TCK= TCK? REB?PLI? TCK= TTA# TTA=TTA= TTA? TTA TIP# TIP=TIP= TIP? TIP =IBS RFM# =IDR =INSERT RFM=RFM= RFM? RFM =QPSK RMD# =OQPSK RMD=RMD= RMD? =BPSK RMD RDR# RDR=RDR= RDR? RDR RRS= REF=REF= REF? REF# IRD# IRD=IRD= IRD? IRD RVL# RVL=RVL= RVL? RVL RET# RET=RET= RET? RET ESC# ESC=ESC= ESC? ESC EFR# EFR=EFR= EFR? EFR CTD# CTD=CTD= CTD? CTD CID# CID=CID= CID? CID MGC MGC=MGC= MGC? MGC=FFF.FFFFDDD MGC? DD.DDDGYRMVSPP CST# CST=CST? CST SSI# SSI=SSI= SSI? SSI CAS# CAS=CAS? CAS CAE RNE?CAE= CAE? RSL? IEP=IEP# EBN? LRS= LRS? BER?RED? LRS= TMP? FCS=BootXXXXFCS? FPGA=ZZZZ HRV? EID?EID=abbbcdefgh Hardware Bytes FLT? DNI# DNI=DNI= DNI? DNI ITS# ITS=ITS= ITS? ITS OUS? OUS=xxxxxxFSW= Appendix A. Cable Drawings CDM-600 Satellite Modem Revision Cable Drawings MN/CDM600.IOM MN/CDM600.IOM Measurement Appendix B. Eb/No Example Bpsk Qpsk PSK This page is intentionally blank Activation Procedure Serial Number Appendix C. Fast Activation Procedure Enter Access Codes View currently installed features Functions are Appendix D. ODU Operation Modem Main Menu Menu Trees Enable 2 ODU3 ODU Redundancy BOX 4 ODU,ENABLE,115 ODU,ENABLE,11 ODU,ENABLE,11 CSAT#2 ODU,ENABLE,STANDALONE Csat TX Slope MODE=MANUAL MANUAL,CAL SLOPE=0.3 6 ODU,ENABLE,11,CSAT#1Configuration AMP=OFF MUTE=UNMUTED Slope RX Slope MODE=MANUAL MANUAL,CAL SLOPE=0.2 LNA-CURRENT FAULT-LOGICLNA State Calibrate XREF=NO REF-ADJUST=087 RTC=OFF Misc COLD-START=DISABLE ODU,ENABLE,11,CSAT#2 Monitor ODU,ENABLE,STANDALONE Csat 13 ODU,ENABLE,11,CSAT#1 Current Status TX RX = OK POWER-SUPPLY Alarms CURRENT-ALARMS STORED-ALARMS Stored Alarms CLEAR-ALL no NO,YES 21 ODU,ENABLE,11,CSAT#1ODU,ENABLE,11,CSAT#2 Information ODU,ENABLE,STANDALONE Csat Reading Stored Faults Please Wait Unmuted Info TxoffAmpoff Info Rxon ENABLE,STANDALONE KST 28 ODU,ENABLE,STANDALONE KST Configuration27 ODU 29 ODU,ENABLE,STANDALONE KST,CONFIG 30 ODU,ENABLE,STANDALONE KST,CONFIG31 ODU,ENABLE,STANDALONE KST,CONFIG Misc 35 ODU,ENABLE,STANDALONE KST,INFO Misc 32 ODU,ENABLE,STANDALONE KST Information33 ODU,ENABLE,STANDALONE KST,INFO Model 34 ODU,ENABLE,STANDALONE KST,INFO TX+RX-PARAM 37 ODU,ENABLE,STANDALONE KST Alarms 36 ODU,ENABLE,STANDALONE KST,INFO Numbers Index Statistics Utilities MN/CDM600.IOM Comtech EF Data is an ISO 9001 Registered Company CDM-600 New Features/Changes Aupc Description of D&I with ESC and Aupc TSR= MN/CDM600.AA7 Metric Conversions 480 333 2200 Phone 480 333 2161 FAX