Config„Rx„Demod Demodulation Scheme | Mocomtech CDM-QX manual

CDM-Qx Satellite Modem	Revision 5
Front Panel Operation	MN/CDMQx.IOM

(ConfigRxDemod) – DEMODULATION SCHEME

Demodulation: BPSK QPSK 8-PSK

16-QAM

(◄ ► ENT)

All possible choices are presented at all times.

If an option is not installed (either Hardware, or FAST) or valid, the IMPORTANT ◄ ► arrow keys will force the cursor to skip past the unavailable choice.

CASE	RULES
BPSK	Valid for all FEC types except TCM+R-S
QPSK	Valid for all FEC types except TCM+R-S
8-PSK	Valid for TCM+R-S, TPC (Turbo) requires 8-PSK FAST option
16-QAM	Valid for Viterbi + R-S, TPC (Turbo) requires 16-QAM FAST option

(ConfigRxCode) – RX CODE RATE

Rx Code Rate: 5/16 21/44 1/2

2/3 3/4 7/8 17/18				(◄ ►)
		All possible choices are presented at all times. If an option is not installed
		(either Hardware, or FAST) or valid, the ◄ ► arrow keys will force the cursor
IMPORTANT		to skip past the unavailable choice.

	CASE		RULES
	5/16		Valid for BPSK and Turbo
	21/44		Valid for BPSK, QPSK and Turbo
	1/2		Valid for BPSK, QPSK, Viterbi, Viterbi+R-S
	2/3		Valid for TCM+R-S only (8-PSK)
	3/4		Valid for QPSK, 8-PSK, and 16-QAM
	7/8		Valid for QPSK, 8-PSK, and 16-QAM
	17/18		Valid for QPSK, 8-PSK , and Turbo

5–26

Image 80

Mocomtech CDM-QX Config„Rx„Demod Demodulation Scheme, Config„Rx„Code RX Code Rate, Demodulation Bpsk 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 Modes 11-1 Management Information Base MIB Files About this Manual Electrical Safety International Symbols CE Mark Warranty Policy CDM-Qx Satellite Modem Revision Preface MN/CDMQx.IOM Xii Introduction CDM-Qx/QxL Features Verification DoubleTalk Carrier-in-CarrierSoftware Flash Upgrading Turbo Product Coding Remote ControlData Interfaces Assembly Description Major Assemblies Fast Options and Hardware Options Fast Fast Accessible Options Fast System TheoryImplementation Hardware Options Supporting Hardware and Software Band Compatibility CDM-Qx Satellite Modem Revision Introduction MN/CDMQx.IOM Installation Unpacking Optional Rear-Mounting Installation Bracket Mounting Installation of the Optional Mounting Brackets Configuration Select Internal if LoopConnect External Cables Observe the following Functional Description Page Modem Block Diagram Page Connections Front Panel LED Rear Panel Rear PanelPage Modem Rear Panel Connectors Name Ref. Desig Connector Type FunctionBNC IEC RF Output 75 or 50Ω 2 M&C 10/100BaseT Connector 3 485/232 ConnectorRemote Control Interface Connector Pin Assignments Use for 2-wire RS-485 operation Pin # Signal Function Name Alarms ConnectorAlarm Interface Connector Pin Assignments Balanced G.703 Connector Tx/Rx Connector Unbalanced G.703 Tx/Rx ConnectorsBalanced G.703 Interface Connector Pin Assignments Pin # Signal Function Name Direction 7 RS-530 Data Interface Connector Pin # Generic Signal Description Direction RS-422 RSLvds RS-232 Circuit # Quad E1 Data Interface Connectors Xx6. Quad E1 Data Interface J1 Connector Pin Assignments RX and TX if Connectors AC Power ConnectorDC Power Connector AC Power Specifications Ground Connector This page is intentionally left blank Operation Color Condition Front Panel LED IndicatorsLED CLR Diamond Keypad Presently used on all UnitsENT Left-Hand Display Area ModemsRight Hand Display Area TXF Redundancy MD MD Accessing the Display Area Spectrum AnalyzerRight-Hand Display Area RXS Principle Menu Tree Main Menu Config Monitor Test Info Save/Load Util ODU Opening ScreenComtech EF Data CDM-Qx Firmware Version ODU Config Config Remote Tx Rx Group Frame Interface Ref Mask ODU Config„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„Gateway Config„Remote„Ethernet„AddressConfig„Remote„Ethernet„MAC Config„Remote„Ethernet„SNMP Snmp Config„Remote„Ethernet„SNMP„CommunitiesConfig„Remote„Ethernet„SNMP„Traps Trap Community , ENT comtech Trap Version ENT SNMPv1 SNMPv2Trap IP Addr#1 ENT Trap IP Addr#2 ENT Config„Tx Transmit Tx FEC Mod Code Data Freq On/Off Pwr Scram Clk Inv Txα Config„Tx„FEC TX FEC Type Config„Tx„Mod Modulation SchemeTx FEC Vit Vit+RS TCM+RS TPC Config„Tx„Code TX Code Rate Config„Tx„Data TX Data RateTx Code Rate 5/16 21/44 1/2 3/4 17/18 Tx Data Rate 05000.000kbps Sym02500.000ksps Config„Tx„Freq TX if Frequency Tx if Freq 1156.3456 MHz Config„Tx„On/Off Transmit ON/OFF Control Tx if Freq 1156.3456 MHz RF=14156.3456 ENTTx Output State On Off RxTxInhibit Common , ENT Tx Common Output State Off On Config„Tx„Pwr„AUPC Aupc Mode Config„Tx„Pwr Transmit Power Level ModeConfig„Tx„Pwr„Manual Manual Mode Config„Tx„Pwr„AUPC Target Eb/No Config„Tx„Pwr„AUPC MAX RangeConfig„Tx„Pwr„AUPC Alarm Config„Tx„Pwr„AUPC DEMOD-UNLOCK Config„Tx„Clk TX Clocking Mode Config„Tx„Pwr„Combined Combined Transmit PowerConfig„Tx„Scram Scrambler Config„Tx„Inv TX Inversion Functions Tx Inversion functions Spectrum Data Clock ,ENTTx Spectral Inversion Normal Inverted Tx Data Sense Config„Tx„Txα TX Roll-Off α factor Config„Rx ReceiveTx Roll-off 20% 35% ENT RxFEC Demod Code Data Freq Acq Descram Buf Inv Misc CnC Config„Rx„FEC RX FEC Type Rx FEC Vit Vit+RSTCM+RS Case Rules Comment Config„Rx„Demod Demodulation Scheme Config„Rx„Code RX Code RateDemodulation Bpsk Qpsk 8-PSK 16-QAM Rx Code Rate 5/16 21/44 1/2 3/4 7/8 17/18 Config„Rx„Data RX Data Rate Rx Data Rate 05000.000kbps Sym02500.000ksps Config„Rx„Freq RX Frequency Config„Rx„Acq Demod Acquisition RangeRx if Freq1156.3456 MHz RF=12156.3456 ENT Demod Acquisition Range ENT Config„Rx„Descram DescramblerConfig„Rx„Buf RX Buffer Clock Source Config„Rx„Inv RX Inversion Functions Config„Rx„Misc Rx Miscellaneous Config„Rx„CnC CARRIER-IN-CARRIER→ Config„Rx„Misc„EbNo Eb/No AlarmConfig„Rx„Misc„Rxα RX Roll-Off α factor Config„Rx„CnC„Mode CnC→ Mode of Operation Config„Rx„CnC„FrqOffs CnC Frequency OffsetPlease Check TX Power Level Please Wait Config„Rx„CnC„SrchDelay CnC Search Delay Config„Rx„CnC„ReAcq CnC RE-ACQUISITION TimeConfig„Group Grouping MOD/DEMOD Cards Config„Group„Modem Config„Group„Redundancy Config„Group„Redundancy„ConfigConfig„Group„Redundancy„Config „11 Config„Group„Redundancy„Config „12 Config„Group„Redundancy„Mode Config„Group„Redundancy„Mode„ManualConfig„Frame Framing Mode Config„Frame„Unframed Unframed Edmac Mode Framing mix AUPC-OnlyAUPC+EDMAC Master Slave Config„Frame„D&I++ D&I++ Distant-end Base Address0240 Address This Slave Unit ENT Config„Interface Data Interface Interface RS422 V.35 RS232Hssi ASI G.703 QDI None RTS/CTS operation , ENT Loop,RTS Controls Tx Out HDB3 AMI T1 Line Length Feet 703 E1 Line Code HDB3 AMI , ENT HDB3 AMI Config„Ref Reference Oscillator Config„Mask MaskAlarm Mask Transmit Receive Reference BUC LNB ,ENT Frequency Reference Internal MHz ENT Tx Alarm Mask Tx-FIFO BPV Tx-AIS ENT Tx-FIFO Alarm ENT Active MaskedRx Alarm Mask AGC Eb/No Rx-AIS Buffer AGC Alarm LNB Alarm Reference AlarmBUC Alarm Config„ODU Outdoor Unit for L-Band Unit Only Config„ODU„BUC Block Upconverter BUCODU BUC LNB Config„ODU„BUC„M&C-FSK M&C FSK Config„ODU„BUC„M&C-FSK„Address FSK CommsConfig„ODU„BUC„M&C-FSK„Address FSK Address BUC M&C Config„ODU„BUC„M&C-FSK„Tx-On/Off FSK TX-ON/OFF Config„ODU„BUC„DC-Pwr BUC DC PowerConfig„ODU„BUC„10MHz BUC 10MHz Config„ODU„BUC„Alarm BUC Alarm Config„ODU„BUC„Delay BUC Delay BUC Current Alarm Upper Limit1200mABUC Current Alarm Lower Limit1200mA Power-On Delay Config„ODU„BUC„LO BUC LO Config„ODU„BUC„Mix BUC MIX LNB 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 Config„ODU„LNB„LO LO Config„ODU„LNB„Mix MIXLNB Current Alarm Lower Limit 050mA ENT LNB Frequency Mix Monitor„Alarms Alarms Monitor„Alarms„Unit Unit Alarms Monitor„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 Events Log 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„Config Configure Stats Stats Logging Interval Disabled,ENTMonitor„Stats„Clear-All Clear ALL Stats Clear all Stored Stats? No Yes Monitor„AUPC Monitor AUPCfor grouped as modem only Monitor„CnC Monitor CARRIER-IN-CARRIER CnC Monitor„ODU Monitor ODU for L-Band Unit only ODU LNB Test 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 Bist BERT-Config BERT-Mon BERT-Control ENT Bert Config Tx=ON Rx=ON Tx-Pat=2047 Rx-Pat=2047Bert Monitor Errs=0000253 BER=8.5E-07 Bert Control 10E-3Err=OFF Restart=NO SyncThres=256 Mode Config Spectrum Analyzer ModeConfig Spectrum Analyzer CenterFreq Span Spectrum Analyzer If 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 Info„Rx RX Information Rx 1140.000 05000.000 TUR 8P 17/18 D RX BUF +/-32k NRx C N N Demod Sweep Acquisition range Buffer Enabled Tx=Rx ENT Info„Buffer Buffer InformationInfo„Frame Framing and Edmac Information Info„Interface Interface Information Info„Mask Alarm Mask Information Info„Ref Frequency ReferenceInfo„ID Circuit Identification Character TST Message Save/Load„Save Save Configuration No YES Save/Load„Load Load Configuration New Config has been Loaded From LocationEmpty ENT Contains No Data! ENT Utility„RxBuffer Buffer Recenter Utility„Clock REAL-TIME ClockUtility RxBuffer Clock Ref ID Display Firmware Fast Real-Time Clock , ,ENT Time=120000 Date24/04/03 Utility„Ref Reference Adjust Warm-up delay ENTUtility„ID Circuit Identification Internal Freq Utility„Display Display Brightness Utility„Firmware Firmware Programming Cpld Current Active Image #1 Next Reboot Image #1 #2Update Cpld to v1.x.x? No Yes ENT Utility„FAST Fast Code Options Fast View Options ENT Redun Not Installed Edit 20 digit Fast Code 00000000000000000000 ENT Forward Error Correction Options For Against ViterbiViterbi Decoding Summary Reed-Solomon Outer Codec Closed Network Modes Concatenated R-S Coding Summary Trellis Coding PSK/TCM Coding Summary Turbo Product Codec Hardware Option Introduction Evolution of TPC in Comtech Products Available TPC Modes End-to-End Processing DelayTurbo Product Coding processing delay comparison Comparison of all TPC Modes Turbo Product Coding Summary Viterbi Decoding BER Viterbi with PSK/TCM Rate 2/3 Decoding, withWithout 219, 201 RS Outer Code CDM-Qx Satellite Modem Forward Error Correction Options Comtech Turbo Product Codec Rate 3/4 QPSK, 8-PSK 16-QAM Comtech 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/QPSK BER Page Edmac Channel Theory Of Operation M&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 Protocols Web Server Http Interface Web Level Web Server Menu TreeWeb Server Menu Tree 11-4 11-5 11-6 11-7 Snmp Interface Management Information Base MIB Files Snmp Community Strings Snmp Traps Alarms and Faults SNMPv2 notifications Telnet Interface 11-11 11-12 Page Page Modulator FEC Power Spectral Density Referred to symbol rateComtech EF Data CDM-Qx Transmit Demodulator ViterbiPSK/TCM Codec Turbo Product Coding HIGHER-ORDERModulation Automatic Uplink Power Control Future Hssi Data Rate Ranges FCC Framing Summary FutureMiscellaneous Page Ethernet FTP upload procedure Appendix B. Flash Upgrading Construction Sector CDM-Qx Satellite Modem Revision Flash Upgrading MN/CDMQx.IOM Appendix C. Remote Control RS-485 RS-232 Basic Protocol Packet Structure Start Of PacketController-to-target Example 0135/TRQ=70.2345CR Target-to-controller Slot 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$ RMD= RMD= RMD?=BPSK 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# Hssi HHC=HHC? HHC Applies 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 RSL? RX BERCRM? 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= BOE= BCH=BCL= BUC LO BLO= BUC BUT?BPA? BSV? Parameter Instruction Type Code Qualifier LNB Power Control Band Unit Only Parameter Instruction Type Code Qualifier Parameter Command Instruction Type Code Qualifier BCT= BCT= BCT?BCT# BCT$ SPM= SPF=SPS= SPM= SPM? DNI= DNI= DNI? DNI# DNI$ DNI Applies 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-CarrierDescription Degradation Due To Carrier Spacing Figure D-1. Adjacent Carrier a As Tested and BAs Plotted Carrier Spacing For 20% RolloffDegradation ≤ 0.5 dB Carrier Spacing For 35% Rolloff PSK 3/4 Turbo, α = 35% Selecting The Adjacent Carrier Curve Figure D-5. Adjacent Carrier Cases Curve To Use In Figure D-2, Error Carrier-in-Carrier Ratio CnC RatioCase Desired Adjacent Carrier Found., or D-4 Figure D-7. CnC Ratio For Qpsk and 8-PSK 1st CnC Example Adjacent Carriers, CnC Ratio and Rain Fade Symbol Rate RatioCnC Carrier Offset DL Fade UL Fade Site a Site B Site a Site BComment Per Figure D Figure 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 B Per 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 At Metric Conversions 480 333 2200 Phone 480 333 2161 FAX