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DMD2401 LB/ST L-Band Satellite Modem and ODU Driver

Table of Contents

TM075 - Rev. 1.3

vii

Table of Contents

1.0  Description______________________________________________________1-1

1.1  DMD2401 Available Options ________________________________________1-2

1.1.1  Reed-Solomon Codec ___________________________________________1-2

1.1.2  Sequential Decoding ____________________________________________1-2

1.1.3  Asynchronous Overhead Channel __________________________________1-2

1.1.4  Customized Options _____________________________________________1-3

1.1.5  8PSK Modulation _______________________________________________1-3

1.1.6  Analog AGC Voltage ____________________________________________1-3

1.1.7  Drop and Insert (D&I) ____________________________________________1-3

Section 2 – Installation

2.0  Installation Requirements __________________________________________2-1

2.1  Unpacking ______________________________________________________2-1

2.2  Removal and Assembly ____________________________________________2-2

2.3  Mounting Considerations ___________________________________________2-2

2.4  Modem Checkout_________________________________________________2-2

2.4.1  Initial Power-Up ________________________________________________2-2

Section 3 – Operation

3.0  Theory of Operation_______________________________________________3-1

3.1  DMD2401 LB/ST Operation _________________________________________3-1

3.2  Applications _____________________________________________________3-1

3.2.1  SCPC Point-to-Point Links ________________________________________3-1

3.2.2  SCPC Point to Multi–Point Links in a Broadcast Application ______________3-2

3.2.3  DAMA (Demand Assigned Multiple Access) ___________________________3-2

3.2.4  TDMA (Time Division Multiple Access) Remote Site Application ___________3-2

3.3  DMD2401 LB/ST Initial Configuration Check ____________________________3-3

3.4  DMD2401 LB/ST Automatic Uplink Power Control (AUPC Operation)_________3-3

3.5  DMD2401 LB/ST Asynchronous Overhead Operation_____________________3-4

3.5.1  Asynchronous Framing/Multiplexer Capability _________________________3-4

3.6  Standard IBS Mode _______________________________________________3-6

3.7  Asynchronous Multiplexer Mode _____________________________________3-6

Summary of Contents for DMD2401 LB

Page 1: ...omStream Corporation This manual may not in whole or in part be copied reproduced translated or reduced to any electronic or magnetic storage medium without the written consent of a duly authorized of...

Page 2: ......

Page 3: ......

Page 4: ...onditions failure to use products according to any operating instructions provided by Radyne ComStream Corporation lack of routine care and maintenance as indicated in any operating maintenance instru...

Page 5: ...Elwood St Phoenix Arizona 85034 USA ATTN Customer Support Phone 602 437 9620 Fax 602 437 4811 Any product returned to Radyne ComStream Corporation for examination must be sent prepaid via the means of...

Page 6: ...ty and fitness for a particular purpose No responsibility for any errors or omissions that may pertain to the material herein is assumed Radyne ComStream Corporation makes no commitment to update nor...

Page 7: ...DMD2401 LB ST L Band Satellite Modem and ODU Driver TM075 Rev 1 3 vi This Page is Intentionally Left Blank...

Page 8: ...ing Considerations ___________________________________________2 2 2 4 Modem Checkout_________________________________________________2 2 2 4 1 Initial Power Up ________________________________________...

Page 9: ...__________________3 13 3 12 2 Baseband Loopback___________________________________________3 14 3 12 3 IF Loopback _________________________________________________3 14 Section 4 User Interfaces 4 0 Us...

Page 10: ...____________________________4 41 4 4 13 2 DMD2401 LB ST Demodulator _________________________________4 63 4 4 13 3 Module Queries Commands__________________________________4 86 4 4 13 4 Default Values...

Page 11: ..._______________________________5 10 5 3 12 RX DC VOLTAGE INDICATOR __________________________________5 10 5 4 DMD2401 LB ST with G 703 Data Interface ___________________________5 10 5 4 1 RX DC POWER...

Page 12: ..._________________________________5 17 5 4 17 TX DC VOLTAGE INDICATOR___________________________________5 18 5 4 18 RX DC VOLTAGE INDICATOR __________________________________5 18 5 5 Async Port Configu...

Page 13: ...________7 2 7 6 Monitor and Control _______________________________________________7 3 7 7 Options ________________________________________________________7 3 7 8 Environmental _______________________...

Page 14: ...s can be readily set and reconfigured from the Front Panel by earth station operations personnel Additionally all functions can be accessed with a terminal or personal computer via a serial link for c...

Page 15: ...e of options are available for the DMD2401 LB ST which include a low data rate asynchronous serial overhead channel for remote monitor and control A brief description of each follows 1 1 1 Reed Solomo...

Page 16: ...tructures 4 Customized Modulation Formats 5 Customized Uses for Asynchronous Overhead Channel 1 1 5 8PSK Modulation The DMD2401 can be equipped with 8PSK Modulation capability as an add on option The...

Page 17: ...Introduction DMD2401 LB ST L Band Satellite Modem and ODU Driver 1 4 TM075 Rev 1 3 This Page is Intentionally Left Blank...

Page 18: ...or suitable surface if required There are no user serviceable parts or configuration settings located inside the DMD2401 LB ST Chassis There is a potential shock hazard internally at the Power Supply...

Page 19: ...t operation The air available to the rack should be clean and relatively dry Modem units should not be placed immediately above a high heat or EMF generator to ensure the output signal integrity and p...

Page 20: ...failure is detected the Fault LED will illuminate The initial field checkout of the modem can be accomplished from the Front Panel or in the Terminal Mode The Terminal Mode has the advantage of provi...

Page 21: ...Installation DMD2401 LB ST L Band Satellite Modem and ODU Driver 2 4 TM075 Rev 1 3 This Page is Intentionally Left Blank...

Page 22: ...3 1 below The modem is shown in a typical application with customer data Tx Rx RF Equipment and an antenna Figure 3 1 Functional Block Diagram 3 2 Applications Following are just a few representative...

Page 23: ...Multiple Access Suppose that a telephone network with a virtual switch between modems carrying digitized voice information is to be simulated We might use a central computer to assign a pair of freque...

Page 24: ...Data Rate 2 048 000 Kbps Forward Error Correction 1 2 Rate Viterbi Frequency 950 000000 MHz To lock up the modem turn the carrier ON enter IF Loopback Enable or connect a loopback cable from J1 to J2...

Page 25: ...ation is therefore a feedback control loop with the added complication of a significant time delay There are safeguards built into the AUPC system First the Modulator has two additional parameters whi...

Page 26: ...640 320 128 2400 768 384 192 4800 896 448 256 4800 1024 512 320 9600 1152 576 384 9600 1280 640 448 9600 1408 704 512 9600 1536 768 576 9600 1664 832 640 19200 1792 896 704 19200 1920 960 768 19200 20...

Page 27: ...age As per IBS Bits 5 and 6 Spare Not currently utilized Bits 7 and 8 Encryption Utilization Not currently utilized The ratio of the through terrestrial data channel rate to the aggregate rate is 15 1...

Page 28: ...y Input in the no fault condition and the ground will be removed in the faulted condition For example the user could connect the Demod Summary Fault of the modem to the Backward Alarm 1 Input so that...

Page 29: ...h transition into Drop Insert and to minimize the potential impact of these dependencies The following steps should be followed when setting up Drop Insert 1 Select the appropriate interface type Newe...

Page 30: ...ble for use by the operator The D I mode specific menus will not be displayed unless the operational mode of the modem is set to D I Therefore the next step in configuring the modem should be to set t...

Page 31: ...op Mode Insert Mode The Drop Mode selection and the Insert Mode selection identify the terrestrial data framing format As previously mentioned their selection is influenced by the mod and demod interf...

Page 32: ...al frame source selection should be made prior to attempting to change the Buffer Clock In most instances the insert terrestrial frame source selection will be set to External and the Buffer Clock wil...

Page 33: ...the timeslots that are to be used to the 4 channels CH1 is assigned to TS1 Timeslot 1 CH2 to TS 2 CH3 to TS3 and CH4 to TS4 ENTER must be depressed after assigning each individual TS Once the timeslot...

Page 34: ...NTER The modem has now copied the current Tx Settings to the Tx Channel Timeslot Display 4 For the Rx Side Map Copy RX ACTIVE RX EDIT 5 Press ENTER The modem has now copied the current Rx Settings to...

Page 35: ...the baseband framing unit is looped back to the Rx data line drivers of the interface refer to Figure 3 6 Rx BB Loopback The Rx Data received by the satellite is passed through the interface and loop...

Page 36: ...B ST L Band Satellite Modem and ODU Driver Operation TM075 Rev 1 3 3 15 Figure 3 5 Tx Rx Terrestrial Loopback Figure 3 6 Tx Baseband Loopback Figure 3 7 Rx Baseband Loopback Figure 3 8 Tx Rx Baseband...

Page 37: ...Operation DMD2401 LB ST L Band Satellite Modem and ODU Driver 3 16 TM075 Rev 1 3 Figure 3 9 IF Loopback...

Page 38: ...Figure 4 1 showing the location and labeling of the Front Panel The Front Panel is divided into three functional areas the LCD Display the Keypad and the LED Indicators each described below in Table 4...

Page 39: ...proper for normal operation and Red indicates a fault condition that will result in lost communications Table 4 2 LED Color Function Modem LED Indicators Power Green Indicates that the unit is turned...

Page 40: ...original parameter Depress Enter again and re enter the new parameters followed by Enter Following a valid input the DMD2401 LB ST will place the new setting into the nonvolatile EEPROM making it ava...

Page 41: ...F RF menu Note The LO frequencies of the Block Upconverter BUC and LNB must be entered first under the System General BUC LO LNB LO menus The LB ST will then calculate the Mod and Demod IF RF frequenc...

Page 42: ...nables or disables the Differential Encoder Scrmbl Sel None V 35 IESS V 35 CITT V 35 EF IBS Reed Solomon Scrambler Enables or disables scrambler operation Scrmbl Ctrl Enable Disable Enables or disable...

Page 43: ...Specification Demodulation BPSK OQPSK QPSK 8PSK Allows the user to select the demodulation type Swp Bounds 1 42 kHz Sets the acquisition range for the demodulator Input Limit 20 90 dBm Demod Data menu...

Page 44: ...DMD2401 LB ST L Band Satellite Modem and ODU Driver User Interfaces TM075 Rev 1 3 4 7 IDR OH Type Voice 64Kbit Available with 96 Kbps IDR Framing...

Page 45: ...k frequency in MHz Freq Ref Src Internal External Allows the user to select between an internal and external frequency source Ext Ref Freq 1 10 MHz 1 MHz steps Allows the user to enter the external re...

Page 46: ...r Size in msec Only available when no Optimal Interface is installed Buff Clk SCTE Ext SCT Int Rx Sat Selects the Buffer Clock source Clk Polarity Normal Inverted Selects the Buffer Clock polarity Rx...

Page 47: ...Event Buff A history of events recorded in the event buffer A maximum of 40 events may be stored in the buffer Upon receipt of the 41 st event the first received event is automatically deleted maintai...

Page 48: ...sizer is not locked This alarm will flash On during certain modem parameter changes Tx FPGA Mask Pass Fail No Yes This alarm indicates a Transmit Hardware FPGA failure within the modem Ref PLL Mask Pa...

Page 49: ...Clock activity BNC Clk Mask Pass Fail No Yes Indicates no activity on the External BNC Clock TxSatCk Mask Pass Fail No Yes Indicates on TX Sat Clock activity Tx Data Mask Pass Fail No Yes Indicates no...

Page 50: ...uffer clock source is not active ExtRef Mask Pass Fail No Yes Indicates no activity on the external reference SatAIS Mask Pass Fail No Yes Fail indicates that there is a loss of satellite data Rx RS F...

Page 51: ...l No Yes Indicates that the Internal Clock Battery is low RAM ROM Mask Pass Fail No Yes Indicates an M C Memory fault M CProc Mask Pass Fail No Yes Indicates an M C Microprocessor hardware failure Ref...

Page 52: ...es that the Modem Synthesizers are not locked to the external reference Tx Force Pass Fails Allows a Major Tx Alarm to be forced for testing purposes etc Major Rx menu RxuProc Pass Fail Indicates a Re...

Page 53: ...dicates that AIS has been detected in the Terrestrial Data Stream RS FIFO Pass Fail Indicates the status of the Tx Reed Solomon FIFO Tx Cal Pass Fail Indicates that the modem has been calibrated for t...

Page 54: ...e Reed Solomon Decoder Lock Dintlvr Mask Pass Fail No Yes Indicates the status of the Reed Solomon De interleaver word fault UnCWord Mask Pass Fail No Yes Indicates the status of the Reed Solomon unco...

Page 55: ...ates that the External Clock is not active Ext Ref Mask Pass Fail No Yes Indicates no activity on the External Reference HS Ref Mask Pass Fail No Yes Indicates HSRf PLL Mask Pass Fail No Yes Indicates...

Page 56: ...he firmware where F0XXXX is the Radyne ComStream part number and NN is the Radyne ComStream revision number is present Tx CPLD F0XXXXNN Not Present Indicates whether the firmware is present Rx CPLD F0...

Page 57: ...stream Rx 2047 BER No Sync nnnn x 10 9 Shows the measured BER for the 2047 pattern Rx 2047 Err No Sync nnnnn Shows the number of errors detected by the 2047 pattern checker Clear 2047 Ent Y Clr N Rest...

Page 58: ...ull screen presentation of current settings and status Programming is accomplished by selecting the item to be modified and pressing the terminal key of the option number For example to change the tra...

Page 59: ...e screens may differ from the exact screens displayed due to changes in software and the presence of options in the modem hardware For instance the presence of a Drop and Insert will result in added o...

Page 60: ...DMD2401 LB ST L Band Satellite Modem and ODU Driver User Interfaces TM075 Rev 1 3 4 23 39 Diff Encodr On 49 Base Loop Off Enter Selection Number Figure 4 3 Modulator Control Terminal Screen...

Page 61: ...ed 56 Reed Sol N 219 37 Dmdulation QPSK 47 IF Loop On 57 Reed Sol K 201 38 Conv Decodr VIT 3 4 48 Terr Loop Off 58 RS Depth 8 39 Diff Decodr On 49 Base Loop Off Enter Selection Number Figure 4 4 Demod...

Page 62: ...0 D Card P No 31 TxBNCCk P No 71 RS Lock P No 32 Tx Data F No 72 RS Intr P No 33 TerrAIS P No 73 RS U W P No 93 Force Tx No 34 RS FIFO P No 94 Force Rx No Enter Selection Number Figure 4 6 Alarm Statu...

Page 63: ...TxBack3 Normal 60 TxBack1 P Yes 80 RxBack1 F Yes 41 ForceTxBack4 Normal 61 TxBack2 P Yes 81 RxBack2 F Yes 42 Tx Ckt ID 62 TxBack2 P Yes 82 RxBack2 F Yes 43 Rx Ckt ID 63 TxBack2 P Yes 83 RxBack2 F Yes...

Page 64: ...ection Number Figure 4 10 V 35 RS4 22RS 232 Interface Control Terminal Screen 1 Main Menu IF Input dBm 68 SW F04780 Ver 1 3 2 Control Mode Ft Panel Eb No NO SYNC Intf Pres V35 422 Async 3 Remote Mode...

Page 65: ...The Communications Specification COMMSPEC defines the interaction of computer resident Monitor and Control software used in satellite earth station equipment such as Modems Redundancy Switches Multip...

Page 66: ...of the COMMSPEC message exchanges are described herein Decimal numbers have no suffix hexadecimal numbers end with a lower case h suffix and binary values have a lower case b suffix Thus 22 16h 000010...

Page 67: ...cimal checksum calculation the equivalent values for each information field are 2 240 42 9 3 223 254 773 773 256 3 with a remainder of 5 This remainder is the checksum for the frame 5 decimal 05h 0101...

Page 68: ...as increasing or decreasing the transmit power level of a DMD2401 LB ST modulator the FSN is incremented after each message packet When the FSN value reaches 255 it overflows and begins again at zero...

Page 69: ...MPARM_FREQUENCY_ERROR 0x0401 MPARM_DATARATE_ERROR 0x0404 MPARM_EXCCLOCK_ERROR 0x0405 MPARM_EXTREFERENCE_ERROR 0x0406 MPARM_FREQREFSOURCE_ERROR 0x0407 MPARM_MODULATIONTYPE_ERROR 0x0408 MPARM_CONVENCODE...

Page 70: ...NCY_ERROR 0x0601 DPARM_DATARATE_ERROR 0x0603 DPARM_SWEEPBOUNDARY_ERROR 0x0604 DPARM_LEVELLIMIT_ERROR 0x0605 DPARM_DEMODULATIONTYPE_ERROR 0x0608 DPARM_CONVDECODER_ERROR 0x0609 DPARM_REEDSOLOMON_ERROR 0...

Page 71: ...both will attempt to respond to the M C computer when the computer generates a multi drop override ID of 22 If their actual setup parameters status or internal timing differs they will both attempt to...

Page 72: ...ST Modem 27 Unused 28 31 Note that multi drop override IDs 01 or 02 can be used interchangeably to broadcast a message to a DMD3000 4000 modem or to a DMD4500 5000 or to a DMD15 modem Radyne ComStream...

Page 73: ...he turnaround time and the round trip sender receiver bus propagation time including handshake overhead The term turnaround time refers to the amount of time required for a receiver to be re enabled a...

Page 74: ...sponse packet is therefore either an acknowledgment that the message was received correctly or some form of a packetized NAK frame If the sender receives a valid acknowledgment response packet from th...

Page 75: ...es excluding the SYNC character 1 byte 4 4 9 DMD2401 LB ST Opcode Command Set The DMD2401 LB ST Opcode Command Set is listed below separated by commands that control the modulator only the demodulator...

Page 76: ...nd Mod CTS Mode and Polarity 2631h Command Mod CTS Level 2632h Command Mod Carrier Delay 2637h 4 4 11 Demodulator Command Set Command Opcode Query Demodulator All 2401h Query Demod Latched Alarms 2406...

Page 77: ...mmand Demod Center Buffer 2A20h Command Demod Buffer Size Time Bytes 2A31h Command Demod Async TERR Int 2A2Eh 4 4 12 Module Command Set RLLP Command Opcode Query Module Identification 2403h Query Modu...

Page 78: ...ion Bytes 4 3 4 4 1 1 1 1 1 1 1 1 Frequency Reserved Data Rate EXC Clock Modulation Type Convolutional Encoder Reed Solomon Reed Solomon N Reed Solomon K Reed Solomon T RS Interleaver Depth Scrambler...

Page 79: ...E 0 Normal 1 Inverted 2 Auto 0 Internal 1 SCR 2 Ext BNC Bit 0 Transmit Processor Fault Bit 1 Transmit Output Power Level Fault Bit 2 Transmit Oversample PLL Lock Fault Bit 3 Transmit Composite Clock P...

Page 80: ...mal 1 Invert Note The following byte applies only if an Asynchronous IDR or IBS Interface is installed If not ignore 0 No Framing 1 1 16 IBS 2 1 16 Async 3 96 Kbit IDR Note The following three bytes a...

Page 81: ...level 0 Disabled 1 Enabled Unsigned Binary 1 Decimal Point Implied Signed Value 50 to 300 5 0 to 30 dBm Implied Decimal Point Signed Value 50 to 300 5 0 to 30 dBm Implied Decimal Point Signed Value 50...

Page 82: ...ce Alarm Always OFF 2 Normal Operation 0 Force Alarm Always ON 1 Force Alarm Always OFF 2 Normal Operation If G 703 Daughter Card is Installed 0 G 703 Unbalanced E1 1 G 703 Balanced E1 2 G 703 T1 B8ZS...

Page 83: ...F Synthesizer Lock Fault Bit 5 Transmit FPGA Configuration Fault Bit 6 Transmit Forced Alarm Bit 7 External Reference PLL Lock Fault 0 Pass 1 Fail Bit 0 Terrestrial Clock Activity Detect Fault Minor A...

Page 84: ...V alarm Bit 3 Temperature Fault Bit 4 Interface FPGA Fault Bit 5 Battery Fault Bit 6 RAM ROM Fault Bit 7 Spare 0 Pass 1 Fail 0 Offline 1 Online 5 V Implied Decimal Point ex 49 4 9 V 12 V Implied Decim...

Page 85: ...ultiframe Lock Fault PCM 30 and PCM 30C only Bit 2 Terrestrial CRC Lock Fault PCM 30C and PCM 31C only Bit 3 Terrestrial Yellow Alarm Received T1 only Bit 4 Terrestrial FAS Alarm Received E1 only Bit...

Page 86: ...Fault Bit 2 Transmit Oversample PLL Lock Fault Bit 3 Composite Clock PLL Lock Fault Bit 4 IF Synthesizer Lock Fault Bit 5 Transmit FPGA Configuration Alarm Fault Bit 6 Transmit Forced Alarm Bit 7 Exte...

Page 87: ...Eb No is Valid 2 Eb No is Smaller than Indicated Value 3 Eb No is Larger than Indicated Value Note The following two bytes apply only if an asynchronous interface card or an IDR or IBS interface card...

Page 88: ...larm Status only Bit 3 Terrestrial Yellow Alarm Received T1 only Bit 4 Terrestrial FAS Alarm Received E1 only Bit 5 Terrestrial MFAS Alarm Received PCM 30 and PCM 30C only Bit 6 Loss of T4errestrial S...

Page 89: ...lt Bit 6 Transmit Reed Solomon Fault Bit 7 Tx BUC Fault LBST Only 0 Pass 1 Fail Bit 0 12 V Alarm Bit 1 12 V Alarm Bit 2 5 V Alarm Bit 3 Temperature Fault Bit 4 Interface FPGA Fault Bit 5 Battery Fault...

Page 90: ...ta Rate EXC Clock Modulation Type Convolutional Encoder Reed Solomon Reed Solomon N Reed Solomon K Reed Solomon T RS Interleaver Depth Scrambler Control Unsigned Binary Value in Hz Set to Zero Unsigne...

Page 91: ...CTE 0 Normal 1 Inverted 2 Auto 0 Internal 1 SCR 2 Ext BNC Bit 0 Transmit Processor Fault Bit 1 Transmit Output Power Level Fault Bit 2 Transmit Oversample PLL Lock Fault Bit 3 Composite Clock PLL Lock...

Page 92: ...al 1 Invert Note The following byte applies only if an Asynchronous IDR or IBS Interface is installed If not set to zero 0 No Framing 1 1 16 IBS 2 1 16 Async 3 96 Kbit IDR Note The following byte appl...

Page 93: ...so installed If not set to zero Note AUPC minimum power level AUPC default power level AUPC max power level 0 Disabled 1 Enabled Note The following two bytes apply only if an Asynchronous Interface Ca...

Page 94: ...ies only if an IDR OR IBS interface card is installed If not set to zero 0 Closed Net Mode 1 IDR Mode 2 IBS Mode 3 Drop Insert Mode Note The following byte applies only if an IDR OR IBS interface card...

Page 95: ...be ignored 0 Force Alarm Always ON 1 Force Alarm Always OFF 2 Normal Operation Note The following byte applies only if an IDR OR IBS interface card is installed and the transmit mode parameter is set...

Page 96: ...ed binary value in dB Note The following two bytes apply only if an IDR OR IBS interface card is installed and the transmit mode parameter is set to IDR Mode If an IDR OR IBS interface card is not ins...

Page 97: ...4 60 TM075 Rev 1 3 1 Convolutional Encoder Note The following command will also turn the carrier off to protect the satellite 0 None 1 Viterbi 1 2 Rate 3 Viterbi 3 4 Rate 5 Viterbi 7 8 Rate 7 Sequenti...

Page 98: ...d a Modulator s SCT Source 1 SCT Source 0 Internal 1 SCR 2 Ext BNC Opcode 260Eh Command a Modulator s Drop Mode 1 Mode 0 Disable 1 T1 D4 2 T1 ESF 3 PCM 30 4 PCM 30C 5 PCM 31 6 PCM 31C 7 T1 SLC96 Opcod...

Page 99: ...band Loopback 1 Baseband Loopback 0 Disable 1 Enable Opcode 2623h Command a Modulator s Data Invert 1 Data Invert 0 Normal 1 Inverted Opcode 2626h Command a Modulator s Async Terrestrial Interface Typ...

Page 100: ...and a Module s External Carrier Delay 1 Carrier Delay Unsigned Binary Value in seconds 0 255 4 4 13 2 DMD2401 LB ST Demodulator Opcode 2401h Query a Modulator s Configuration and Status Query Response...

Page 101: ...equential 7 8 Rate 14 Trellis 2 3 0 Disable 1 Enable Unsigned Binary Unsigned Binary Unsigned Binary Unsigned Binary 4 or 8 0 Off 1 On 0 Disable 1 Enable 0 None 1 IBS Scrm 2 V35_IESS 3 V35_CCITT 4 V35...

Page 102: ...L Lock Detect Fault Bit 3 Viterbi Decoder Lock Fault Bit 4 Sequential Decoder Lock Fault Bit 5 Rx 2047 Test Pattern Lock Fault Bit 6 External Reference PLL Lock Fault Bit 7 Frame Sync Multiframe Sync...

Page 103: ...s interface card is installed If not ignore 0 1200 1 2400 2 4800 3 9600 4 19200 5 50 6 110 7 300 8 600 Note The following byte applies only if an asynchronous interface card is installed If not ignore...

Page 104: ...t ignore 0 Voice 1 64 K Data Note The following byte applies only if an IDR OR IBS interface card is installed and the Receive Mode is set to IDR Mode If not ignore Bit 0 IDR Backward Alarm 1 Bit 1 ID...

Page 105: ...to insert Terrestrial Timeslots 0 Frame Lock Fault 1 MultiFrame Lock Fault 2 CRC Lock Fault Valid only in T1 ESF and E1 CRC enabled 3 T1 Yellow Alarm Received 4 E1 FAS Alarm Received 5 E1 MFAS Alarm R...

Page 106: ...l Reference PLL Lock Fault Bit 7 Frame Sync Multiframe Sync Fault 0 Pass 1 Fail Bit 0 Buffer Clock Activity Detect Fault Bit 1 External BNC Activity Detect Fault Bit 2 Rx Satellite Clock Activity Dete...

Page 107: ...it 5 Rx 2047 Test Pattern Lock Fault Bit 6 External Reference PLL Lock Fault Bit 7 Frame Sync Fault 0 Pass 1 Fail Bit 0 Buffer Clock Activity Detect Fault Bit 1 External BNC Activity Detect Fault Bit...

Page 108: ...lied Signed Binary 0 Equal to 1 Greater Than 1 Less Than Value in 1 dB Steps Negative Sign Implied Bit 0 IBS Satellite Multiframe Loss Bit 1 IBS Satellite Frame Loss Bit 2 Spare Bit 3 IBS Alarm if BER...

Page 109: ...Decoder Lock Fault Bit 5 Rx 2047 Test Pattern Lock Fault Bit 6 External Reference PLL Lock Fault Bit 7 Frame Sync Multiframe Sync Fault 0 Pass 1 Fail Bit 0 Buffer Clock Activity Detect Fault Bit 1 Ext...

Page 110: ...der Lock Fault Bit 4 Sequential Decoder Lock Fault Bit 5 Rx 2047 Test Pattern Lock Fault Bit 6 External Reference PLL Lock Fault Bit 7 Frame Sync Multiframe Sync Fault 0 Pass 1 Fail Bit 0 Buffer Clock...

Page 111: ...Bits 4 7 Reserved Unsigned Binary Value Representing Buffer Full 0 100 in 1 steps Unsigned Binary Value in 1 dB Steps Negative Sign Implied Signed Binary 0 Equal to 1 Greater Than 1 Less Than Value in...

Page 112: ...6h Query a Demodulator s Latched Alarms Query response 1 1 1 Latched Alarm 1 Latched Alarm 2 Latched Alarm 3 Bit 0 Receive Processor Fault Bit 1 Signal Lock Fault Bit 2 Receive Satellite AIS Fault Bit...

Page 113: ...ultiframe Sync Loss Bit 0 IBS IDR Satellite Frame Sync Loss Bit 2 Spare Bit 3 IBS BER Alarm Bit 3 IBS Prompt Alarm Bit 5 IBS Service Alarm Bits 6 7 Spares 0 Pass 1 Fail Opcode 2409h Query a Demodulato...

Page 114: ...Detect Fault Bit 2 Rx Satellite Clock Activity Detect Fault Bit 3 External Reference PLL Activity Fault Bits 4 7 Spares 0 Pass 1 Fail Bit 0 12 V Alarm Bit 1 12 V Alarm Bit 2 5 V Alarm Bit 3 Temperatur...

Page 115: ...ved Binary Value in 1 dB Steps Negative Sign Implied Signed Binary 0 Equal to 1 Greater Than 1 Less Than Value in 1 dB Steps Negative Sign Implied In Hex decimal point implied Opcode 2437h Query a Dem...

Page 116: ...3 0 Disable 1 Enable Unsigned Binary Unsigned Binary Note Always set to Zero as the T value is calculated from N and K Unsigned Binary 4 or 8 0 Off 1 On 0 Disable 1 Enable 0 None 1 IBS Scrm 2 V35_IESS...

Page 117: ...Bit 3 Viterbi Decoder Lock Fault Bit 4 Sequential Decoder Lock Fault Bit 5 Rx 2047 Test Pattern Lock Fault Bit 6 External Reference PLL Lock Fault Bit 7 Frame Sync Fault 0 Mask 1 Allow Bit 0 Buffer Cl...

Page 118: ...e The following byte applies only if an asynchronous interface card is installed If not set to zero 0 RS 232 1 RS 485 Note The following byte applies only if an asynchronous interface card is installe...

Page 119: ...Bit 1 IDR Backward Alarm 2 Bit 2 IDR Backward Alarm 3 Bit 3 IDR Backward Alarm 4 Bits 4 7 Spares 0 Mask 1 Allow Note The following byte applies only if an IDR OR IBS interface card is installed and t...

Page 120: ...rm Received 4 E1 FAS Alarm Received 5 E1 MFAS Alarm Received 6 E1 CRC Alarm Received 7 CRC Calculation Fault Bit 0 Backward Alarm Received from Satellite Bits 2 7 Spares Force D I Terrestrial Backward...

Page 121: ...signed Binary Unsigned Binary Note Always set to Zero as the T value is calculated from N and K Unsigned Binary 4 or 8 Opcode 2A0Dh Command a Demodulator s Descrambler Control 1 Descrambler Control 0...

Page 122: ...Command a Demodulator s Terrestrial Loopback 1 Rx Terrestrial Loopback 0 Disabled 1 Enabled Opcode 2A1Dh Command a Demodulator s Baseband Loopback 1 Rx Baseband Loopback 0 Disabled 1 Enabled Opcode 2...

Page 123: ...ecified the other field should be 0XfFFF 4 4 13 3 Module Queries Commands Opcode 2403h Query a Module s Identification Query response 1 Modem ID DMD2401 Modem 27 Opcode 240Eh Query Time Query response...

Page 124: ...x Sat Clock Activity Detect Fault Bit 3 Tx Data Activity Detect Fault Bit 4 Terrestrial AIS Tx Data AIS Detect Fault Bit 5 Transmit Ext BNC Clock Activity Detect Fault Bit 6 Transmit Reed Solomon Faul...

Page 125: ...LL Activity Fault Bits 4 7 Spares 0 Pass 1 Fail Bit 0 12 V Alarm Bit 1 12 V Alarm Bit 2 5 V Alarm Bit 3 Temperature Fault Bit 4 Interface FPGA Fault Bit 5 Battery Fault Bit 6 RAM ROM Fault Bit 7 Spare...

Page 126: ...defined Bit 0 AUPC Bit 1 D I Bits 2 7 Spares Opcode 2600h Command a Modem s Control Mode 1 Modem Control Mode 0 Front Panel 1 Terminal 2 Computer Opcode 2616h Command a Module s External Reference Sou...

Page 127: ...06h Command Set Time and Date 1 1 1 1 1 1 Year Month Day Hour Minute Second 0 99 0 11 0 30 0 23 0 59 0 59 Opcode 2C07h Command soft reset the modem to the power up state no parameters Opcode 2C30h Com...

Page 128: ...ty 0 Normal 00 1 SCT Source 0 Internal 00 1 Alarm 1 Mask No Alarms Masked FF 1 Alarm 2 Mask No Alarms Masked FF 1 Common Alarm 1 No Alarms Masked FF 24 Tx Circuit ID 24 ASCII Spaces 20 20 20 20 20 20...

Page 129: ...Alarm 3 Normal 02 1 IDR Force Backward Alarm 4 Normal 02 1 Interface Type 02 2 Transmit ESC 1 Volume 20 dB FFDF 2 Transmit ESC 2 Volume 20 dB FFDF 4 4 13 5 Default Values Demodulator Opcode 2A00h Com...

Page 130: ...y 0 Normal 00 1 Operating Mode 0 Normal 00 1 Alarm 1 Mask No Alarms Masked FF 1 Alarm 2 Mask No Alarms Masked FF 1 Alarm 3 Mask No Alarms Masked FF 1 Alarm 4 Mask No Alarms Masked FF 1 Common Alarm 1...

Page 131: ...User Interfaces DMD2401 LB ST L Band Satellite Modem and ODU Driver 4 94 TM075 Rev 1 3 1 Async Baud Rate 3 9600 03 1 Async Port Type 0 RS 232 00...

Page 132: ...0 Closed Net 00 1 T1 E1 Frame Source 0 Internal 00 1 Receive IDR Overhead Mode 0 Voice 00 1 Receive IDR Backward Alarm Mask No Alarms Masked FF 1 Interface Type 00 2 Receive ESC 1 Volume 20 dB FF DF...

Page 133: ...User Interfaces DMD2401 LB ST L Band Satellite Modem and ODU Driver 4 96 TM075 Rev 1 3 This Page is Intentionally Left Blank...

Page 134: ...100 240 VAC 50 60 Hz Integrated into the power entry module is the Power On Off Rocker Switch Power consumption for the unit is 1A The power cord connector assembly is a supplied item A chassis groun...

Page 135: ...J3 pinouts are listed below in Table 5 2 Table 5 2 RS 232 Terminal Port 9 Pin Female D Connector J3 Pin Number Signal Description Direction 2 TxD Transmit Data Input 3 RxD Receive Data Output 5 GND Gr...

Page 136: ...odulator Alarm Non Alarm is defined as the powered state of the relay Thus if there is a Modulator Alarm and or Demodulator Alarm the pins will be connected as shown in Table 5 4 Table 5 4 Alarm Relay...

Page 137: ...B ST Master Oscillator is locked to this source All internally generated frequencies within the modem will attain the stability of the applied external reference The external reference must meet the f...

Page 138: ...Output 33 DF Demod Fault Open Collector Output 27 CS B Clear to Send B Output 11 DM A Data Mode A Output 29 DM B Data Mode B Output 13 RR A Receiver Ready A Output 31 RR B Receiver Ready B Output 3 B...

Page 139: ...Signal Description Direction 7 GND 1 GND Signal Ground 4 RTS 7 RS A Request to Send A Input 5 CTS 9 CS A Clear to Send A Output 6 DM 11 DM A DSR Data Mode A Output 8 RR 13 RR A RLSD Receive Ready A Ou...

Page 140: ...ut P SD A 4 SD A Send Data A Input S SD B 22 SD B Send Data B Output R RD A 6 RD A Recieve Data A Input T RD B 24 RD B Receive Data B Output U TT A 17 TT A Terminal Timing A Output W TT B 35 TT B Term...

Page 141: ...nector depending upon customer request 5 3 3 TERMINAL J3 The Terminal Port J3 pinouts are listed in Table 5 2 5 3 4 REMOTE J4 The Remote Port J4 is the RS 485 connection for remote monitor and control...

Page 142: ...ated frequencies within the modem will attain the stability of the applied external reference The external reference must meet the following parameters Frequency 10 MHz 9 MHz 5 MHz 2 048 MHz or 1 024...

Page 143: ...Transmit Data RS 485 Input 7 RTS Request to Send Input 5 3 11 TX DC VOLTAGE INDICATOR The Transmit DC Voltage Indicator shows if there is DC Voltage present at J2 5 3 12 RX DC VOLTAGE INDICATOR The Re...

Page 144: ...pin definitions for J5 are shown in Table 5 5 Note The NC and NO Normally Closed and Normally Open nomenclature applies to non energized relays 5 4 6 TX IF MON J6 The Transmit IF Monitor Port J6 is u...

Page 145: ...Table 5 10 G 703 BAL 15 Pin Connector J10 Pin Number Signal Description Direction 1 SD A Send Data A Input 2 GND Ground 9 SD B Send Data B Input 7 BAL EXC A External Clock A Input 8 BAL EXC B Externa...

Page 146: ...face with Drop and Insert 5 5 1 RX DC POWER J1 The Receive DC Power Port J1 is the 950 1750 MHz Demodulator IF Input It may be a Mini UHF shown or SMA Connector depending upon customer request 5 4 2 T...

Page 147: ...rnal reference must meet the following parameters Frequency 10 MHz 9 MHz 5 MHz 2 048 MHz or 1 024 MHz Amplitude 0 2 Vp p to 5 Vp p Type Sinewave or Squarewave Stability 1 x 10 7 or Better 5 4 7 REF MO...

Page 148: ...4 Backward Alarm In 4 Input 12 NC No Connection 13 NC No Connection 14 ESCBWO 1C Backward Alarm Out 1 C Output 15 ESCBWO 1NC Backward Alarm Out 1 NC Output 16 ESCBWO 2C Backward Alarm Out 2 C Output...

Page 149: ...lock A Output 11 ESCRXD A Rx Data A Output 12 GND Ground 13 ESCTXD B Tx Data B Input 14 ESCTXC B Tx Clock B Output 15 ESCTXO B Tx Octet B Output 5 4 11 G 703 BAL J13 The G 703 Balanced Port J13 are th...

Page 150: ...TX 1A Tx Audio 1A Input 2 ESCAUDRX 1A Rx Audio 1A Output 3 GND Ground 4 ESCAUDTX 2B Tx Audio 2B Input 5 ESCAUDRX 2B Rx Audio 2B Output 6 ESCAUDTX 1B Tx Audio 1B Input 7 ESCAUDRX 1B Rx Audio 1B Output...

Page 151: ...ata 485 Input 7 RTS Request to Send Input 5 4 17 TX DC VOLTAGE INDICATOR The Transmit DC Voltage Indicator shows if there is DC Voltage present at J2 5 4 18 RX DC VOLTAGE INDICATOR The Receive DC Volt...

Page 152: ...3 OFF 3 ON 4 OFF 4 ON 5 ON 5 OFF 6 OFF 6 ON Table 5 20 Async Port DIP Switch Settings RS 232 Null Only with CTS RTS 1 OFF 2 OFF 3 ON 4 ON 5 ON 6 OFF 5 6 AS 3771 Daughter Card Table 5 21 is used to con...

Page 153: ...nterfaces DMD2401 LB ST L Band Satellite Modem and ODU Driver 5 20 TM075 Rev 1 3 Table 5 21 AS 3771 Daughter Card Resistor Location Corresponds to Switch R69 1 R70 2 R71 3 R72 4 R73 5 R87 6 OFF TBD ON...

Page 154: ...ownconverter is properly set and that the LNA is turned on If a spectrum analyzer is available locate and measure the receive level which should not be below 65 dBm absolute 50 dBm is nominal Possible...

Page 155: ...e completely independent 6 2 2 2 Minor Alarms Minor alarms indicate that a problem may persist outside the modem such as loss of terrestrial clock loss of terrestrial data activity or a detected trans...

Page 156: ...v 1 3 6 3 Table 6 2 DMD2401 LB ST RX Fault Matrix Note When EXT EXC is used as a reference for the Mod Clock and activity on the EXT EXC is lost the modem switches Tx clock reference to SCTE if it exi...

Page 157: ...cted from the satellite Figure 6 7 IBS Alarm Concept Table 6 4 IBS Fault Conditions and Actions includes Drop and Insert Fault Detected on Terrestrial Link Across Interface A FA1 Loss of Terrestrial I...

Page 158: ...FA3 Loss of Satellite Multiframe FA4 BER of 1E 3 or Greater From Satellite Input FA5 Alarm Indication Received From Satellite Input AS1 2 IBS Prompt Service Alarm AS1 2 IBS Prompt Service Alarm AS1 2...

Page 159: ...Maintenance DMD2401 LB ST L Band Satellite Modem and ODU Driver 6 6 TM075 Rev 1 3 This Page is Intentionally Left Blank...

Page 160: ...14400 bps 3750 Kbps QPSK 7 8 Rate 16800 bps 4375 Kbps OQPSK 1 2 Rate 9600 bps 2500 Kbps OQPSK 3 4 Rate 14400 bps 3750 Kbps OQPSK 7 8 Rate 16800 bps 4375 Kbps Optional 8PSK 2 3 Rate Data Rate Setting...

Page 161: ...7 6 2 7 7 8 6 Typical Eb No Trellis 8PSK Rate 2 3 BER 10 5 7 2 BER 10 7 8 9 Typical Eb No 64 Kbps Sequential Rate 1 2 Rate 3 4 Rate 7 8 BER 10 5 4 0 5 0 6 1 BER 10 7 4 9 5 9 7 4 Note Eb No typical va...

Page 162: ...Modulator Demodulator Data inverted or non inverted Modulator Demodulator Clock Source and Phase Demodulator FIFO Size Delay and Status Demodulator Eb No Demodulator Low Eb No Demodulator Measure BER...

Page 163: ...pecifications DMD2401 LB ST L Band Satellite Modem and ODU Driver 7 4 TM075 Rev 1 3 7 10 Bit Error Rate BER Curves Figures 7 1 through 7 5 represent the BER curves for the DMD2401 LB ST Figure 7 1 IBS...

Page 164: ...DMD2401 LB ST L Band Satellite Modem and ODU Driver Technical Specifications TM075 Rev 1 3 7 5 Figure 7 2 IDR BER Curve Figure 7 3 Reed Solomon IDR BER Curve...

Page 165: ...Technical Specifications DMD2401 LB ST L Band Satellite Modem and ODU Driver 7 6 TM075 Rev 1 3 Figure 4 4 Sequential 384 Kbps BER Curve Figure 7 5 Trellis 8PSK BER Curve...

Page 166: ...MD2401 LB ST L Band Satellite Modem and ODU Driver Technical Specifications TM075 Rev 1 3 7 7 7 11 AGC Curve Figure 6 6 represents the AGC Curve for the DMD2401 LB ST Figure 7 6 DMD2401 LB ST AGC Curv...

Page 167: ...Technical Specifications DMD2401 LB ST L Band Satellite Modem and ODU Driver 7 8 TM075 Rev 1 3 This Page is Intentionally Left Blank...

Page 168: ...3 4 5 7 4 5 6 8 4 6 7 9 5 6 7 8 10 5 7 8 9 11 6 8 9 10 12 6 8 9 10 11 13 7 9 10 11 12 14 7 10 11 12 13 15 8 10 12 13 14 16 8 11 12 13 14 15 17 9 12 13 14 15 16 18 9 12 14 15 16 17 19 10 13 15 16 17 18...

Page 169: ...19 26 29 31 32 33 34 35 36 37 39 20 26 30 32 33 34 35 36 37 38 40 20 27 30 32 34 35 36 37 38 39 41 21 28 31 33 35 36 37 38 39 40 42 28 32 34 35 36 37 38 39 40 41 43 29 33 35 36 37 38 39 40 41 42 44 30...

Page 170: ...67 51 54 56 58 59 60 61 62 63 64 65 66 68 51 55 57 59 60 61 62 63 64 65 66 67 69 52 56 58 60 61 62 63 64 65 66 67 68 70 53 56 59 60 62 63 64 65 66 67 68 69 71 54 57 60 61 63 64 65 66 67 68 69 70 72 54...

Page 171: ...94 95 97 78 81 84 85 87 88 89 90 91 92 93 94 95 96 98 79 82 84 86 88 89 90 91 92 93 94 95 96 97 99 80 83 85 87 88 90 91 92 93 94 95 96 97 98 100 80 84 86 88 89 90 91 92 93 94 95 96 97 98 99 101 81 85...

Page 172: ...105 108 110 112 113 114 115 116 117 118 119 120 121 122 123 124 126 108 111 112 114 115 116 117 118 119 120 121 122 123 124 125 127 109 112 113 115 116 117 118 119 120 121 122 123 124 125 126 128 110...

Page 173: ...48 149 150 151 152 154 135 137 139 140 142 143 144 145 146 147 148 149 150 151 152 153 155 136 138 140 141 143 144 145 146 147 148 149 150 151 152 153 154 156 137 139 141 142 143 144 145 146 147 148 1...

Page 174: ...68 169 170 171 172 173 174 175 176 177 178 179 180 181 183 163 165 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 184 164 166 168 169 170 171 172 173 174 175 176 177 178 179 180 181 1...

Page 175: ...94 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 211 192 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 212 193 195 196 197 198 199 200 201 202 203 204 205 206 207 2...

Page 176: ...20 221 222 223 224 225 226 227 228 229 230 231 232 233 234 236 217 218 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 237 218 219 221 222 223 224 225 226 227 228 229 230 231 232 233 2...

Page 177: ...233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 251 231 232 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 252 233 234 236 237 238 239 240 241 242 243 244 245...

Page 178: ...rminal the modulator is turned off while re programming modulator functions that may alter the output spectrum and the user is required to manually turn on the output after the reprogramming same as C...

Page 179: ...Appendices DMD2401 LB ST L Band Satellite Modem and ODU Driver 8 12 TM075 Rev 1 3 This Page is Intentionally Left Blank...

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