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Paradyne DMD15L operation manual Reed-Solomon Decoder Functional Block Diagram

Models: DMD15 DMD15L

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	DMD15/DMD15L IBS/IDR Satellite Modem	Operation

Figure 3-15. Reed-Solomon Decoder Functional Block Diagram

TM051 - Rev. 5.8

3-21

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Paradyne DMD15L operation manual Reed-Solomon Decoder Functional Block Diagram

Contents

DMD15/DMD15L Page Latest Software Revision Confirmation Warranty Coverage Limitations Warranty and ServiceWarranty Period Warranty Replacement and AdjustmentWarranty Repair Return Procedure Non-Warranty RepairRadyne, Inc TM051 Record of Revisions Revision Date Reason for Change LevelDMD15/DMD15L IBS/IDR Satellite Modem TM051 Rev Table of Contents Operation DMD15/DMD15L IBS/IDR Satellite Modem Table of Contents User Interfaces Electrical Interfaces Appendices Internal High Stability DescriptionDMD15/DMD15L Available Options Reed-Solomon CodecDrop and Insert D&I Internal Engineering Service Channel ESCTurbo Codec 5 8PSK ModulationBack Panel Options Customized OptionsPage Installation Requirements Removal and AssemblyUnpacking DMD15/DMD15L Initial Configuration Check Mounting ConsiderationsModulator Initial Power-UpModulator Checkout QpskTerminal Setup DMD15/DMD15L Functional Block Diagram Theory of OperationOperation DMD15/DMD15L IBS/IDR Satellite Modem Universal Interface Modules UIM Dip Switch Settings Universal Interface Module UIMSynchronous Interface G.703 InterfaceModem Status Open Collector FaultsTerrestrial Loopback Form-C ContactsLoopback Functional Block Diagram Loopback Functional Block Diagram Baseband Processor Card Baseband ProcessingTx Baseband Processing Monitor & Control M&C Subsystem Rx Baseband ProcessingClock Selection Asynchronous Serial Port #1Clock Watchdog TimerFront Panel Interface Program Flash ROMScte Serial Clock Transmit External Demodulator11 DMD15/DMD15L Clocking Options SCT Serial Clock TransmitEXT if REF External if Reference IDI Insert DataSCR Serial Clock Receive Transmit Timing14.2 G.703 Interface or Asymmetrical Data Rates Loop TimingTransmit RS-422 or V.35 Interface ReceiveLooped Modems Drop Only Insert OnlyPCM-30C Mode SelectionPCM-30 PCM-3116.6 T1-ESF/ T1-ESF-S PCM-31C16.5 T1-D4/T1-D4-S SLC-96Example Drop and Insert MappingSATCh TS Enter to Edit Map CopyTX Active TX Edit TX Edit TX ActiveRX Edit RX Active RX Active RX EditReed-Solomon Code Rate Reed-Solomon Codec Refer to Figures 3-14, 3-15, and TableOperation in the DMD15/DMD15L Interleaving15. Reed-Solomon Decoder Functional Block Diagram 19 DMD15 Automatic Uplink Power Control Aupc Operation IDR8PSK Aupc Functions Function DescriptionKbps Baud Rate Example for Standard IBS Enhanced Mode DMD15/DMD15L IBS/IDR Satellite ModemOperation Standard IBS Mode Asynchronous Multiplexer ModeESC Backward Alarms To Disable the ESC Backward Alarms Reacquisition16. Reacquisition flow in the DMD15/DMD15L DMD15/DMD15L IBS/IDR Satellite Modem Operation TM051 Rev Page User Interfaces Front Panel User InterfaceCursor Control Arrow Keys Edit Mode Key Functions Front Panel OnlyLCD Front Panel Display Numeric KeypadFront Panel LED Indicators Parameter SetupLED Front Panel Control Screen Menus Modulator Demodulator Interface Monitor Alarms System TestMode IDR, IBS, Closed Net, Drop & Insert Main MenusIBS Mode QPSK, BPSK, OQPSK, 8PSK, 16QAM Used with IDR, IBS, or Asynchronous Interface Only Allows the user to select the framing typeDemodulator Menu Options and Parameters Strap Code Refer to Strap Code Guide, .3, TableSwp Bound ±0 32 kHz Swp Delay 900.0 secDemodulation ReAcq Sweep 32000 HzCSC Allows the user to select the Tx Code Rate and TypeInterface Menu Options and Parameters ESC CH#1ESC CH#2 Tx D&I menu Drop Mode Enable, Disable Time Mark Enable, DisableSATCh TS Clk Polarity Normal, Inverted Rx D&I menu Insert Mode Enable, DisableAsync menu ES Mode Normal, Enhanced option T1E1 Frm Src Internal, ExternalAupc Menu Options and Parameters HOLD, NOMINAL, Maximum Tracking RateLocal CL Action Remote CL ActionSER Monitor Menu Options and ParametersOFF, on CberAlarms Menu Options and Parameters Major Rx menu RxuProc Mask Pass/Fail, No/Yes CompClk Mask Pass/Fail, No/YesTxSynth Mask Pass/Fail, No/Yes SigLoss Mask Pass/Fail, No/YesRS Fifo Indicates status of the Tx Reed-Solomon FifoUser InterfacesDMD15/DMD15L IBS/IDR Satellite Modem Indicates M&C memory fault RAM/ROMIBS BER RxIFSynLock RxOSPLLLock Buf Clk LockUProc Ext Ref Lock Backward Alr menu System Menu Options and Parameters YY MM DDHhmmss Test Menu Options and Parameters DMD15/DMD15L Strap Codes Insert DMD15/DMD15L Strap Codes DataReed Code Rate DEC1544 104 576 16/15 Sample DMD15/DMD15L Applications None CNTClosed Network Operational Case ExamplesIBS Case 1 IDR 8.448 Mbps, 3/4 Rate ViterbiDemodulator Method Case 2 IBS 1.544 Mbps, 3/4 Rate ViterbiCase 3 Closed Network, 3/4 Rate Viterbi, IBS Overhead Case 4 Loop Timing Example MethodConfiguring the DMD15/DMD15L for Drop and Insert Data RateOperational Mode Terrestrial Framing Drop Mode/Insert ModeInsert Terrestrial Frame Source 4 D&I Sample Configurations and D&I Clock Setup Options DMD15/DMD15L IBS/IDR Satellite Modem User Interfaces Transmit Trunk and Receive Trunk Single Trunk D&I Maps and Map Editing D&I ROM Maps T1/E1 Time Slot ROMUser Interfaces DMD15/DMD15L IBS/IDR Satellite Modem Terminal Mode Control Modem Terminal Mode ControlModem Setup for Terminal Mode Sync Protocol StructureProtocol Wrapper Byte CountDestination ID Byte Field Data Content Running ChecksumSource ID Frame Sequence NumberFrame Description and Bus Handshaking DMD15 Response Error Code Descriptions Global Response Operational CodesResponse Opcodes Response Opcode Description Mparmconvencodererror MparmextrefsourceerrorMparmmodulationtypeerror MparmreedsolomonerrorMparmtransfertypeerror MparmsymbolrateerrorMparmnotimplementederror MparmsummaryfaulterrorDparmdescramblertypeerror DparmdifferentialdecodererrorDparmdescramblercontrolerror DparmspectrumerrorCollision Avoidance Directly-Addressed Equipment Multi-Drop Override ID Software Compatibility Flow Control and Task ProcessingRllp Summary DEST. ID Remote Port Packet StructureSync Count SRC Dest FSN Opcode Data Checksum Addr Bytes FSN3 DMD15/DMD15L Opcode Command Set Modem Command SetCommand Opcode Command User InterfacesDMD15/DMD15L IBS/IDR Satellite Modem Detailed Command Descriptions 4.9.5.1 DMD15/DMD15L Modulator Configuration Bytes Query Response= INTELSAT, 1 = EUTELSAT, 2 = Closed NET1 T1 ESF S User Interfaces DMD15/DMD15L IBS/IDR Satellite Modem Status Bytes Alarm Online Flag Opcode 240Bh Query a Modulator’s Status DMD15/DMD15L IBS/IDR Satellite Modem User Interfaces Opcode 2405h Query a modulator’s latched alarms Opcode 2601h Command a modulator’s configuration T1 ESF S DMD15/DMD15L IBS/IDR Satellite Modem User Interfaces User Interfaces DMD15/DMD15L IBS/IDR Satellite Modem Satellite Opcode 2606h Command a modulators modulation type Opcode 2618h Command a modulators baseband loopback Opcode 262Ah Command Aupc Remote Enable 5.2 DMD15/DMD15L Demodulator Query ResponseT1 ESF S DMD15/DMD15L IBS/IDR Satellite Modem User Interfaces User Interfaces DMD15/DMD15L IBS/IDR Satellite Modem Unsigned Binary Value, 0-99, Implied Decimal Point User Interfaces DMD15/DMD15L IBS/IDR Satellite Modem DMD15/DMD15L IBS/IDR Satellite Modem User Interfaces Query Response DMD15/DMD15L IBS/IDR Satellite Modem User Interfaces User Interfaces DMD15/DMD15L IBS/IDR Satellite Modem Bits 4 7 = Spares Opcode 2406h Query a demodulator’s latched alarms Query Response Bit 4 = E1 FAS alarm received = Received T1 ESF S User Interfaces DMD15/DMD15L IBS/IDR Satellite Modem DMD15/DMD15L IBS/IDR Satellite Modem User Interfaces Opcode 2A0Dh Command a demodulator’s descrambler control Opcode 2A15h Command a demodulator’s T1E1 frame source Modem Queries & Commands Query ResponseOpcode 2407h Query a modems latched alarms Query Response DMD15/DMD15L IBS/IDR Satellite Modem User Interfaces Opcode 240Eh Query time Query Response Opcode 240Fh Query date Query ResponseOpcode 2C04h Command set time Opcode 2C05h Command set date102 DMD15/DMD15L Connections DMD15/DMD15L G.703 Interface Module w/ESCPower Inputs AC Power Input ModuleDC Power Input Module SD J3 TX J1RX J2 DDO J4Sync Data J8 Async J9 S6 AGC Out/Prompt C Switch Positions Status J11Prompt C S6 Ground/Deferred C Switch Positions AGC Out Terminal J12Remote J13 ESC 8K Data J15 ESC Alarms J17 ESC Voice J16Switch J18 TXD-A BWI Escaud RX 1AEscaud RX 2A MOD FLTIDO-B RD-B Sync TT-BDDO-B RT-B TX-B BWIRXO-B Sync DM-BSync CS-B Sync RS-BPage Periodic Maintenance TroubleshootingDMD15/DMD15L Fault Philosophy Minor Alarms Alarm MasksActive Alarms 6.2.2.1 Major Alarms Latched AlarmsTM051 Rev IBS Fault Conditions and Actions DMD15/DMD15L TX Fault MatrixInterpreting the Matrices Fault Detected From Satellite Across Interface E TM051 Rev Modulator Specifications Demodulator SpecificationsFEC Plesiochronous Buffer Monitor and ControlDMD15/DMD15L Drop and Insert Optional Environmental Terrestrial InterfacesUniversal Interface PhysicalDMD15 Data Rate Limits 10 DMD15 BER Specifications IBS IDRBER 10-6 10-7 10-8 10-6 10.5 dB 10-7 10.8 dB 10.4 dB 10-8 11.0 dB 10.7 dB Page Page Page Appendix a Reed-Solomon Codes Valid Values for kTM051 Rev TM051 Rev TM051 Rev TM051 Rev TM051 Rev TM051 Rev TM051 Rev TM051 Rev TM051 Rev Page Page AIS ADCAGC AmslDpll DACDCE DTEIeee HssiIBS IessNvram MfasMIB PLLSEQ RAMROM Sync16QAM Y ZMisc 8PSK