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Mocomtech CDM-QX operation manual Comtech Turbo Product Codec Rate 7/8 QPSK, 8-PSK 16-QAM

Models: CDM-QX

1 258

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Page 146

Image 146

CDM-Qx Satellite Modem

Forward Error Correction Options

1 2 3 4

1E-1

Uncoded

BPSK/QPSK

1E-2

Performance with CDM-Qx

1E-3

Spec limit

Rate 7/8

QPSK/OQPSK

1E-4

1E-5

1E-6

1E-7

1E-8
Typical performance
1E-9	2	3	4
1

BER

Revision 5

MN/CDMQx.IOM

						Eb/No in dB
5	6	7	8	9	10	11	12

Comtech Turbo Product Codec

Rate 7/8 QPSK, 8-PSK

and 16-QAM

Uncoded 16-QAM

Spec limit Rate 7/8 8-PSK

Uncoded

8-PSK

Spec limit Rate 7/8 16-QAM

Figure 6-5. Comtech EF Data Turbo Product Codec

Rate 7/8 QPSK, 8-PSK and 16-QAM

6–14

Page 146

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Mocomtech CDM-QX operation manual Comtech Turbo Product Codec Rate 7/8 QPSK, 8-PSK 16-QAM

Contents

CDM-Qx RevisionPage Errata a Acquisition rangePage Errata B Page Errata C Rx Rs n/k ENT IESS-310 network 219/201Page Errata D Tx Rs n/k ENT IESS-310 network 219/201Page Part Number MN/CDMQx.IOM Revision January 20,2007 Customer Support Table of Contents Chapter Functional Description External Connections Evolution of TPC in Comtech Products Comparison of all TPC Modes11-1 Management Information Base MIB FilesAbout this Manual Electrical Safety International Symbols CE Mark Warranty Policy CDM-Qx Satellite Modem Revision Preface MN/CDMQx.IOM Xii Introduction CDM-Qx/QxLFeatures Verification DoubleTalk Carrier-in-CarrierSoftware Flash Upgrading Turbo Product Coding Remote ControlData Interfaces Assembly Description Major AssembliesFast Options and Hardware Options FastImplementation Fast Accessible OptionsFast System Theory Hardware OptionsSupporting Hardware and Software Band CompatibilityCDM-Qx Satellite Modem Revision Introduction MN/CDMQx.IOM Installation UnpackingOptional Rear-Mounting Installation Bracket MountingInstallation of the Optional Mounting Brackets Connect External Cables ConfigurationSelect Internal if Loop Observe the followingFunctional Description Page Modem Block Diagram Page Connections Front Panel LEDRear Panel Rear PanelPage BNC Modem Rear Panel ConnectorsName Ref. Desig Connector Type Function IECRF Output 75 or 50Ω Remote Control Interface Connector Pin Assignments 2 M&C 10/100BaseT Connector3 485/232 Connector Use for 2-wire RS-485 operationPin # Signal Function Name Alarms ConnectorAlarm Interface Connector Pin Assignments Balanced G.703 Interface Connector Pin Assignments Balanced G.703 Connector Tx/Rx ConnectorUnbalanced G.703 Tx/Rx Connectors Pin # Signal Function Name DirectionLvds 7 RS-530 Data Interface ConnectorPin # Generic Signal Description Direction RS-422 RS RS-232 Circuit #Quad E1 Data Interface Connectors Xx6. Quad E1 Data Interface J1 Connector Pin AssignmentsDC Power Connector RX and TX if ConnectorsAC Power Connector AC Power SpecificationsGround Connector This page is intentionally left blank Operation Color Condition Front Panel LED IndicatorsLED CLR Diamond Keypad Presently used on all UnitsENT Right Hand Display Area Left-Hand Display AreaModems TXFRedundancy MD MDRight-Hand Display Area Accessing the Display AreaSpectrum Analyzer RXSPrinciple Menu Tree Comtech EF Data CDM-Qx Firmware Version Main Menu Config Monitor Test Info Save/Load Util ODUOpening Screen ODUConfig Config Remote Tx Rx Group Frame Interface Ref Mask ODUConfig„Remote„Serial„Interface Config„Remote Remote ControlConfig„Remote„Serial Config„Remote„Ethernet Config„Remote„Serial„Interface„RS485 RS-485 Bus AddressConfig„Remote„Serial„Baudrate Config„Remote„Ethernet„MAC Config„Remote„Ethernet„GatewayConfig„Remote„Ethernet„Address Config„Remote„Ethernet„SNMPSnmp Config„Remote„Ethernet„SNMP„CommunitiesConfig„Remote„Ethernet„SNMP„Traps Trap IP Addr#1 ENT Trap Community , ENT comtechTrap Version ENT SNMPv1 SNMPv2 Trap IP Addr#2 ENTConfig„Tx Transmit Tx FEC Mod Code Data Freq On/Off Pwr Scram Clk Inv TxαTx FEC Vit Vit+RS TCM+RS Config„Tx„FEC TX FEC TypeConfig„Tx„Mod Modulation Scheme TPCTx Code Rate 5/16 21/44 1/2 3/4 17/18 Config„Tx„Code TX Code RateConfig„Tx„Data TX Data Rate Tx Data Rate 05000.000kbps Sym02500.000kspsConfig„Tx„Freq TX if Frequency Tx if Freq 1156.3456 MHzTx Output State On Off RxTxInhibit Common , ENT Config„Tx„On/Off Transmit ON/OFF ControlTx if Freq 1156.3456 MHz RF=14156.3456 ENT Tx Common Output State Off OnConfig„Tx„Pwr„AUPC Aupc Mode Config„Tx„Pwr Transmit Power Level ModeConfig„Tx„Pwr„Manual Manual Mode Config„Tx„Pwr„AUPC Alarm Config„Tx„Pwr„AUPC Target Eb/NoConfig„Tx„Pwr„AUPC MAX Range Config„Tx„Pwr„AUPC DEMOD-UNLOCKConfig„Tx„Clk TX Clocking Mode Config„Tx„Pwr„Combined Combined Transmit PowerConfig„Tx„Scram Scrambler Tx Spectral Inversion Normal Inverted Config„Tx„Inv TX Inversion FunctionsTx Inversion functions Spectrum Data Clock ,ENT Tx Data SenseTx Roll-off 20% 35% ENT Config„Tx„Txα TX Roll-Off α factorConfig„Rx Receive RxFEC Demod Code Data Freq Acq Descram Buf Inv Misc CnCTCM+RS Config„Rx„FEC RX FEC TypeRx FEC Vit Vit+RS Case Rules CommentDemodulation Bpsk Qpsk 8-PSK 16-QAM Config„Rx„Demod Demodulation SchemeConfig„Rx„Code RX Code Rate Rx Code Rate 5/16 21/44 1/2 3/4 7/8 17/18Config„Rx„Data RX Data Rate Rx Data Rate 05000.000kbps Sym02500.000kspsRx if Freq1156.3456 MHz RF=12156.3456 ENT Config„Rx„Freq RX FrequencyConfig„Rx„Acq Demod Acquisition Range Demod Acquisition RangeENT Config„Rx„Descram DescramblerConfig„Rx„Buf RX Buffer Clock Source Config„Rx„Inv RX Inversion Functions Config„Rx„Misc Rx MiscellaneousConfig„Rx„CnC CARRIER-IN-CARRIER→ Config„Rx„Misc„EbNo Eb/No AlarmConfig„Rx„Misc„Rxα RX Roll-Off α factor Please Check TX Power Level Config„Rx„CnC„Mode CnC→ Mode of OperationConfig„Rx„CnC„FrqOffs CnC Frequency Offset Please WaitConfig„Group Grouping MOD/DEMOD Cards Config„Rx„CnC„SrchDelay CnC Search DelayConfig„Rx„CnC„ReAcq CnC RE-ACQUISITION Time Config„Group„ModemConfig„Group„Redundancy„Config „11 Config„Group„RedundancyConfig„Group„Redundancy„Config Config„Group„Redundancy„Config „12Config„Frame Framing Mode Config„Group„Redundancy„ModeConfig„Group„Redundancy„Mode„Manual Config„Frame„Unframed UnframedAUPC+EDMAC Edmac ModeFraming mix AUPC-Only Master Slave0240 Config„Frame„D&I++ D&I++Distant-end Base Address Address This Slave Unit ENTHssi ASI G.703 QDI None Config„Interface Data InterfaceInterface RS422 V.35 RS232 RTS/CTS operation , ENT Loop,RTS Controls Tx OutHDB3 AMI T1 Line Length Feet 703 E1 Line Code HDB3 AMI , ENTHDB3 AMI Alarm Mask Transmit Receive Reference BUC LNB ,ENT Config„Ref Reference OscillatorConfig„Mask Mask Frequency Reference Internal MHz ENTRx Alarm Mask AGC Eb/No Rx-AIS Buffer Tx Alarm Mask Tx-FIFO BPV Tx-AIS ENTTx-FIFO Alarm ENT Active Masked AGC AlarmLNB Alarm Reference AlarmBUC Alarm ODU Config„ODU Outdoor Unit for L-Band Unit OnlyConfig„ODU„BUC Block Upconverter BUC BUC LNBConfig„ODU„BUC„M&C-FSK„Address FSK Address Config„ODU„BUC„M&C-FSK M&C FSKConfig„ODU„BUC„M&C-FSK„Address FSK Comms BUC M&CConfig„ODU„BUC„10MHz BUC 10MHz Config„ODU„BUC„M&C-FSK„Tx-On/Off FSK TX-ON/OFFConfig„ODU„BUC„DC-Pwr BUC DC Power Config„ODU„BUC„Alarm BUC AlarmBUC Current Alarm Lower Limit1200mA Config„ODU„BUC„Delay BUC DelayBUC Current Alarm Upper Limit1200mA Power-On DelayConfig„ODU„BUC„LO BUC LO Config„ODU„BUC„Mix BUC MIXLNB DC Config„ODU„LNB LNBConfig„ODU„LNB„Voltage LNB Voltage Config„ODU„LNB„Alarm LNB Alarm Config„ODU„LNB„Power-On/Off LNB POWER- ON/OFFConfig„ODU„LNB„10MHz LNB 10MHz LNB Current Alarm Lower Limit 050mA ENT Config„ODU„LNB„LO LOConfig„ODU„LNB„Mix MIX LNB Frequency MixMonitor„Alarms Alarms Monitor„Alarms„Unit Unit AlarmsMonitor„Alarms„ODU Outdoor Unit Alarms Monitor„Alarms„Receive Receive AlarmsMonitor„Alarms„Transmit Transmit Alarms Monitor„Rx-Params RECEIVE-PARAMETERS Monitor„Event-Log EVENT-LOG or Stored EventsLog 024 30/11/97 Clear Demod Lock 3 ,ENT Log 023 30/11/02 Fault Demod Lock 3 ,ENTMonitor„Event-Log„View View Stored Events Monitor„Stats„View View Link Statistics Link Statistics View Clear-All Config ENTMonitor„Stats Link Statistics for grouped as modem only Monitor„Stats„Clear-All Clear ALL Stats Monitor„Stats„Config Configure StatsStats Logging Interval Disabled,ENT Clear all Stored Stats? No YesMonitor„AUPC Monitor AUPCfor grouped as modem only Monitor„CnC Monitor CARRIER-IN-CARRIER CnCMonitor„ODU Monitor ODU for L-Band Unit only ODU LNBTest Test Mode Bist ENT Spec-AnalyzerMode Norm if 2 Dig 2 I/O 2 RF Tx-CW Tx1-0 ENT TX-1,0 Norm If Loop Dig Loop RF LoopTX-CW Bert Monitor Errs=0000253 BER=8.5E-07 Bist BERT-Config BERT-Mon BERT-Control ENTBert Config Tx=ON Rx=ON Tx-Pat=2047 Rx-Pat=2047 Bert Control 10E-3Err=OFF Restart=NO SyncThres=256Config Spectrum Analyzer CenterFreq Span Mode ConfigSpectrum Analyzer Mode Spectrum AnalyzerIf Loopback Info Rem Tx Rx Buffer Frame Interface Mask Ref ID Info„Rem Remote Control InformationInfo Information Tx C N N Info„Tx TX InformationTx 1140.000 05000.000 TUR 8P 17/18 S EXT -20.0 on N Rx C N N Info„Rx RX InformationRx 1140.000 05000.000 TUR 8P 17/18 D RX BUF +/-32k N Demod Sweep Acquisition rangeInfo„Frame Framing and Edmac Information Buffer Enabled Tx=Rx ENTInfo„Buffer Buffer Information Info„Interface Interface InformationInfo„ID Circuit Identification Info„Mask Alarm Mask InformationInfo„Ref Frequency Reference Character TST MessageSave/Load„Save Save Configuration No YESEmpty ENT Save/Load„Load Load ConfigurationNew Config has been Loaded From Location Contains No Data! ENTUtility RxBuffer Clock Ref ID Display Firmware Fast Utility„RxBuffer Buffer RecenterUtility„Clock REAL-TIME Clock Real-Time Clock , ,ENT Time=120000 Date24/04/03Utility„ID Circuit Identification Utility„Ref Reference AdjustWarm-up delay ENT Internal FreqUtility„Display Display Brightness Utility„Firmware FirmwareProgramming Cpld Current Active Image #1 Next Reboot Image #1 #2Update Cpld to v1.x.x? No Yes ENT Utility„FAST Fast Code Options FastView Options ENT Redun Not Installed Edit 20 digit Fast Code 00000000000000000000 ENTForward Error Correction Options For Against ViterbiViterbi Decoding Summary Reed-Solomon Outer Codec Closed Network Modes Concatenated R-S Coding SummaryTrellis Coding PSK/TCM Coding SummaryTurbo Product Codec Hardware Option Introduction Evolution of TPC in Comtech ProductsAvailable TPC Modes End-to-End Processing DelayTurbo Product Coding processing delay comparison Comparison of all TPC Modes Turbo Product Coding Summary Viterbi Decoding BERViterbi with Without 219, 201 RS PSK/TCM Rate 2/3Decoding, with Outer CodeCDM-Qx Satellite Modem Forward Error Correction Options Comtech Turbo Product Codec Rate 3/4 QPSK, 8-PSK 16-QAMComtech Turbo Product Codec Rate 7/8 QPSK, 8-PSK 16-QAM Comtech Turbo Product Codec Rate 21/44 Bpsk and Rate 5/16 Bpsk Turbo BPSK/QPSKBER Page Edmac Channel Theory Of OperationM&C Connection Setup Summary This page is intentionally left blank Automatic Uplink Power Control Max Range Setting Aupc ParametersTarget Eb/No Compensation Rate AlarmDemod Unlock Monitoring DoubleTalk Carrier-in-Carrier Page Transponder Utilization with and without CnC→ Page Redundancy CDM-Qx Satellite Modem Revision Redundancy MN/CDMQx.IOM 10-2 Management Ethernet Management Interface ProtocolsWeb Server Http Interface WebLevel Web Server Menu TreeWeb Server Menu Tree 11-4 11-5 11-6 11-7 Snmp Interface Management Information Base MIB FilesSnmp Community Strings Snmp TrapsAlarms and Faults SNMPv2 notifications Telnet Interface11-11 11-12 Page Page Modulator FECComtech EF Data Power Spectral DensityReferred to symbol rate CDM-Qx TransmitPSK/TCM Codec DemodulatorViterbi Turbo ProductCoding HIGHER-ORDERModulation Automatic Uplink Power Control Future HssiData Rate Ranges FCC Framing Summary FutureMiscellaneous Page Ethernet FTP upload procedure Appendix B. Flash UpgradingConstruction Sector CDM-Qx Satellite Modem Revision Flash Upgrading MN/CDMQx.IOM Appendix C. Remote Control RS-485RS-232 Basic ProtocolController-to-target Packet StructureStart Of Packet Example 0135/TRQ=70.2345CR Target-to-controllerSlot Address AddressInstruction Code Instruction Code Qualifier ‘=’ code Target to Controller is used in two ways$ code target-to-controller is only used as follows End Of Packet Remote CommandsMessage Arguments CDM-Qx Satellite Modem Revision Remote Control MN/CDMQx.IOM TX Remote Commands TCR TCR=TCR? TCR#TSI TSI=TSI= TSI? TSI# TSI$TCK TCK=TCK= TCK? TCK#RFQ RFQ=RFQ= RFQ? RFQ# RFQ$=BPSK RMD RMD=RMD= RMD? =QPSK RMD#RDR RDR=RDR= RDR? RDR#RSW RSW=RSW= RSW? RSW#EBA EBA=EBA= EBA? EBA# EBA$ITF ITF=ITF= ITF? ITF#ESA ESA=ESA= ESA? ERF=TST TST=TST= TST? TST#AUP AUP=AUP= AUP? AUP#LBO LBO=LBO= LBO? LBO#HHC? HssiHHC= HHCApplies to CST CST=CST? CST#TIM TIM=TIM= TIM? TIM#IRM IRM=IRM = IRM? IRM#FBU FBU=FBU= FBU? FBU#CSD CSD=CSD? CSD#Query Commands EID?Bytes UID?=Change in fault FLT?WHO? REB?CC is Fault Code numbers, as in FLT? Or Infor Code, which RNE=RNS=CR CRM? RSL?RX BER CDM?FRW? CFM?SWR? IMG IMG=IMG= IMG? IMG#ITP? Bulk Commands OGC OGC=OGC= OGC? OGC#Band Unit Only Arguments For Command or Response to QueryBAD= BCL= BOE=BCH= BUC LO BLO=BPA? BUCBUT? BSV?Parameter Instruction Type Code Qualifier LNB Power Control Band Unit OnlyParameter Instruction Type Code Qualifier Parameter Command Instruction Type Code Qualifier BCT# BCT=BCT= BCT? BCT$SPS= SPM=SPF= SPM= SPM?DNI= DNI= DNI? DNI# DNI$ DNIApplies to Cards grouped As modem Parameter Instruction Type Code Qualifier Drop TimeslotDTS= CDM-Qx Satellite Modem Revision Remote Control MN/CDMQx.IOM Performance Characterization Carrier-in-CarrierDescriptionDegradation Due To Carrier Spacing Figure D-1. Adjacent Carrier a As Tested and BAs PlottedDegradation ≤ 0.5 dB Carrier Spacing For20% Rolloff Carrier Spacing For 35% RolloffPSK 3/4 Turbo, α = 35% Selecting The Adjacent Carrier Curve Figure D-5. Adjacent Carrier CasesCase Desired Adjacent Carrier Curve To Use In Figure D-2, ErrorCarrier-in-Carrier Ratio CnC Ratio Found., or D-4Figure D-7. CnC Ratio For Qpsk and 8-PSK 1st CnC Example Adjacent Carriers, CnC Ratio and Rain Fade Symbol Rate RatioCnC Carrier Offset Comment DL Fade UL Fade Site a Site BSite a Site B Per Figure DFigure D-10. Link With Fading At Site a 2nd CnC Example CnC Ratio With Asymmetric Links Link parameters and results are summarized in the table Parameters Site a Site BPer Figure D- Qpsk 3rd CnC Example Asymmetric Link With Rain FadeEb/No Degradation At Site a Parameter Due To Fade At Conclusion Eb/No Degradation At Site B Parameter Due To Fade AtMetric Conversions 480 333 2200 Phone 480 333 2161 FAX