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Radyne DMD2401 LB Скачать руководство пользователя страница 24

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

Operation

TM075 - Rev. 1.3

3-3

The DMD2401 LB/ST is specifically designed to be usable as the remote site modem of a TDMA
network when coupled with a proper “Burst” demodulator at the hub site.

Since the frequencies can be assigned on demand, the network is then called “Demand
Assigned, Multiple Access,” or DAMA.

3.3 DMD2401 LB/ST Initial Configuration Check

The DMD2401 LB/ST is shipped from the factory with preset factory defaults. Upon initial power-
up, a user check should be performed to verify the shipped modem configuration. Refer to
Section 3, Operation for the Modulator and Demodulator Front Panel Menu Screens to locate
and verify the following configuration settings are correct:

Note: Transmit (Tx) and Receive (Rx) Interface types are dependent upon the customer’s
order.

Standard DMD2401 LB/ST Factory Configuration Settings

Modulator:

Data Rate:

2,048,000 Kbps

Forward Error Correction:

1/2 Rate Viterbi

Modulation:

QPSK

Frequency:

950.000000 MHz

Modulator Output Power:

-30 dBm

Carrier:

Off

Demodulator:

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 on the rear panel of the modem.

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

The DMD2401 LB/ST modem has an optional built-in provision for Automatic Uplink Power
Control (AUPC). AUPC attempts to maintain a constant E

b

/N

o

at the receive end of an SCPC

link. This is especially useful when operating over a satellite at Ku-Band frequencies in locations
with high rainfall periods.

Note: An Asynchronous or IBS Interface is required for AUPC. Also, IBS (Async Framing
Mode MUST be selected to provide a channel for AUPC operation.

The IBS (Async Framer Data Mode provides a service channel between the two sites of a link
permitting the modem processors to send messages and get responses over this channel.
AUPC can be set to operate on either or both directions of a link but always requires a bi-
directional channel. Therefore, both the Modulator and Demodulator interface mode must be set
to IBS (Async for the AUPC menus to be visible and for the AUPC function to operate properly.
The AUPC functions and their descriptions are shown below:

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Содержание DMD2401 LB

Страница 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...

Страница 2: ......

Страница 3: ......

Страница 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...

Страница 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...

Страница 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...

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

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

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

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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