Radyne ComStream DMD2401 Operation Manual Download Page 197

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Appendices

DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem

8-10

TM065 – Rev. 3.3

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, 246, 247, 248, 249, 250, 251

253

234, 235, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252

254

235, 236, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253

255

236, 237, 238, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254

* Note: T1 Framing not supported (IBS, Drop & Insert).

Summary of Contents for ComStream DMD2401

Page 1: ...Stream 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 offi...

Page 2: ......

Page 3: ...different sized packets The remote M C MUST make use of the non volatile count value to index to the start of the Volatile Section If the remote M C is not aware of the newly added features to the pr...

Page 4: ...nd or malfunction relating in any way to shipping storage accident abuse alteration misuse neglect failure to use products under normal operating conditions failure to use products according to any op...

Page 5: ...ity or if field repair will be accomplished The Repair Authorization may be requested in writing or by calling Radyne ComStream Corporation 3138 E Elwood St Phoenix Arizona 85034 USA ATTN Customer Sup...

Page 6: ...ar 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 to keep current the informati...

Page 7: ...DMD2401 DMD2401L DMD2401 IBS IDR Satellite Modem TM065 Rev 3 3 vi This Page is Intentionally Left Blank...

Page 8: ...1 2 2 Removal and Assembly____________________________________________ 2 1 2 3 Mounting Considerations___________________________________________ 2 2 2 4 Modulator Checkout __________________________...

Page 9: ..._________ 3 13 3 12 1 Terrestrial Loopback __________________________________________ 3 13 3 12 2 Baseband Loopback __________________________________________ 3 14 3 12 3 IF Loopback _________________...

Page 10: ...__________________ 4 46 4 4 12 Module Command Set _________________________________________ 4 47 4 4 13 Detailed Command Descriptions _________________________________ 4 47 4 4 13 1 DMD2401 Modulator...

Page 11: ..._____________________________________ 5 9 5 5 2 EXT REF IN J2 _______________________________________________ 5 9 5 5 3 EXT CLK J3 __________________________________________________ 5 9 5 5 4 XMIT IF...

Page 12: ..._____________________________ 5 25 5 7 8 SWITCH INTERFACE J8 ______________________________________ 5 25 5 7 9 SD J9 ______________________________________________________ 5 25 5 7 10 G 703 BAL J10 __...

Page 13: ...___________ 6 2 6 2 2 1 Major Alarms _________________________________________________ 6 2 6 2 2 2 Minor Alarms _________________________________________________ 6 2 6 2 2 3 Latched Alarms ___________...

Page 14: ...ndices Appendix A Reed Solomon Codes _____________________________________ 8 1 Appendix B Carrier Control __________________________________________ 8 11 B 0 States ___________________________________...

Page 15: ......

Page 16: ...for complete remote monitor and control capability The DMD2401 operates at all standard IBS and IDR data rates up to 4 375 Mbps Selection of any data rate in closed network operation is provided over...

Page 17: ...1 1 DMD2401 Satellite Modem 1 1 DMD2401 Available Options A wide range of options are available for the DMD2401 Satellite Modem A brief description of each follows 1 1 1 Reed Solomon Codec The DMD2401...

Page 18: ...ion The 8PSK Option can be added by installing one IC into an existing socket 1 1 6 Analog AGC Voltage The DMD2401 can be equipped at the factory to produce an analog voltage equivalent to its AGC for...

Page 19: ...Introduction DMD2401 DMD2401L DMD2401 IBS IDR Satellite Modem 1 4 TM065 Rev 3 3 This Page is Intentionally Left Blank...

Page 20: ...uipment This is especially true if the current DMD2401 configuration settings are unknown where incorrect settings could disrupt existing communications traffic 2 1 Unpacking The DMD2401 Modulator was...

Page 21: ...ta Interface Cable with a 37 Pin Male D Sub Connector 2 4 Modulator Checkout The following descriptions assume that the DMD2401 is installed in a suitable location with prime AC power and supporting e...

Page 22: ...DMD2401 DMD2401L DMD2401 IBS IDR Satellite Modem Installation TM065 Rev 3 3 2 3 Terminal Setup Baud Rate 19 2 K Can be changed via front panel Data Bits 8 Parity No Parity Fixed Stop Bits 1 Stop Bit...

Page 23: ...Installation DMD2401 DMD2401L DMD2401 IBS IDR Satellite Modem 2 4 TM065 Rev 3 3 This Page is Intentionally Left Blank...

Page 24: ...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 f...

Page 25: ...ems carrying digitized voice information is to be simulated We might use a central computer to assign a pair of frequencies for any conversation and send this connection information to the proper site...

Page 26: ...Enable or connect a loopback cable from J1 to J4 on the rear panel of the modem 3 4 DMD2401 Automatic Uplink Power Control AUPC Operation The DMD2401 modem has an optional built in provision for Autom...

Page 27: ...ecified which takes precedence over the output power level during signal loss or loss of AUPC channel communication The default power level should normally be set to a high enough level to reestablish...

Page 28: ...0 320 128 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 2048...

Page 29: ...mode are not used an Enhanced multiplexer mode has been implemented that can be engaged under software control Since this mode changes the use of many of the framed non data bits this mode is only usa...

Page 30: ...indicate PASS for BK1 through BK4 3 9 IDR or IBS D I Configuration Instructions Note Newer Modems are Front Panel Configurable disregard Sections 3 9 1 and 3 9 2 To check from the Front Panel Section...

Page 31: ...to Terrestrial Slots 8 Copy the appropriate Edit Map to the Active Map 3 10 1 Interface Type Interface Type affects the terrestrial framing and data rates used by the Drop Insert function in the follo...

Page 32: ...red 2 In Drop Insert Mode only valid D I data rates may be entered The entry of an invalid rate will result in the error message DATA RATE OUT OF BOUNDS 3 10 3 Data Rate Data Rate also affects the Dro...

Page 33: ...type terrestrial framing limits the terrestrial timeslots to values from 1 15 17 31 In these modes terrestrial timeslot 16 is reserved for ABCD signaling and may not be dropped or inserted 3 The sele...

Page 34: ...icates Terrestrial Frame lock on the Send Data Port Valid in all framing modes MFrmLck Indicates Terrestrial Multiframe lock on the Send Data Port Valid in PCM 30 PCM 30C CRCLock Indicates valid CRC r...

Page 35: ...4 ENTER must be depressed after assigning each individual TS Once the timeslots are assigned to the channels use the Left or Right Arrow Key to scroll to the Mapping Menu This menu will appear in the...

Page 36: ...ER 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 th...

Page 37: ...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 loope...

Page 38: ...DMD2401L DMD2401 IBS IDR Satellite Modem Operation TM065 Rev 3 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 L...

Page 39: ...Operation DMD2401 DMD2401L DMD2401 IBS IDR Satellite Modem 3 16 TM065 Rev 3 3 Figure 3 9 IF Loopback...

Page 40: ...play Displays DMD2401 Operating parameters and Configuration data 2 Cursor Control Arrows Controls the up down right and left motion of the cursor in the LCD Display window 3 Numeric Keypad Allows ent...

Page 41: ...o the remote control input Modulator LED Indicators Transmit On Green Indicates that the Transmit Output is currently active Major Alarm Red Indicates that the Transmit Direction has failed losing tra...

Page 42: ...aking it available immediately and available the next time the unit is powered up Table 4 3 Edit Mode Key Functions Front Panel Only Parameter Type 0 9 Clear Clear Fixed Point Decimal Changes Digit To...

Page 43: ...specification The purpose is to eliminate keystrokes and potential compatibility problems Additionally data rates not covered by the given mode of operation will not be allowed If the mode of operati...

Page 44: ...of rotation for PSK Modulation Normal meets the IESS Specification Modulation BPSK OQPSK QPSK 8PSK Allows the user to select the modulation type Impedance 75 50 Allows the user to select the output im...

Page 45: ...4 or 8 may be selected 4 2 3 Demodulator Menu Options and Parameters Demod Mode IDR IBS D I Closed Net Used with IDR or IBS Interface Only Sets a number of parameters within the modem to meet a set sp...

Page 46: ...ets the acquisition range for the demodulator Input Limit 20 90 dBm Impedance 75 50 Allows the user to select the output impedance Demod Data menu Data Rate Refer to Table 1 1 for Data Rates Allows th...

Page 47: ...User Interfaces DMD2401 DMD2401L DMD2401 IBS IDR Satellite Modem 4 8 TM065 Rev 3 3 Allows the user to invert the data...

Page 48: ...s General menu EXC Clk Freq 1 0 1 544 2 0 2 048 2 5 5 0 9 0 10 0 Displays the external clock frequency in MHz Freq Ref Src Internal External Allows the user to select between an internal and external...

Page 49: ...rcuits can be given up to an 11 character alphanumeric identity such as LINK1 Buff Size 1 128 Sets the Doppler Buffer Size in msec Only available when no Optimal Interface is installed Buff Clk SCTE E...

Page 50: ...ted bit error rate after decoding Error Count Displays the current error count from the Viterbi Decoder Offset Freq The received carrier frequency offset as measured by the modem Event Buff A history...

Page 51: ...is not locked This alarm will flash On during certain modem parameter changes CompCLK Mask Pass Fail No Yes Indicates that the Tx Composite Clock PLL is not locked This alarm will flash On during cer...

Page 52: ...evel Mask Pass Fail No Yes This alarm indicates that the Receive Automatic Gain Control is saturated i e too much signal power is being supplied to the modem Rx FPGA Mask Pass Fail No Yes This alarm i...

Page 53: ...e 90 full and may overflow VitLock Mask Pass Fail No Yes Indicates that the Viterbi Decoder is not locked SeqLock Mask Pass Fail No Yes Indicates that the Sequential Decoder is not locked Rx Activity...

Page 54: ...the power supply voltage is out of range 5Volt Mask Pass Fail No Yes Indicates the power supply voltage is out of range Temp Mask Pass Fail No Yes Fail indicates that internal temperature of the modem...

Page 55: ...ss Fail Indicates that the Tx IF Synthesizer is not locked This alarm will flash On during certain modem parameter changes Tx FPGA Pass Fail This alarm indicates a Transmit Hardware FPGA failure withi...

Page 56: ...Clock activity Int Clk Pass Fail Indicates no SCT Clock activity BNC Clk Pass Fail Indicates no activity on the External BNC Clock TxSatCk Pass Fail Indicates no Tx Sat Clock activity Tx Data Pass Fai...

Page 57: ...ce SatAIS Mask Pass Fail No Yes Fail indicates a loss of satellite data Rx RS Faults menu DecLock Mask Pass Fail No Yes Indicates the status of the Reed Solomon Decoder Lock Dintlvr Mask Pass Fail No...

Page 58: ...sk Pass Fail No Yes Indicates an M C Microprocessor hardware failure Ref PLL Mask Pass Fail No Yes Indicates that the External Reference PLL is not locked Ext EXC Mask Pass Fail No Yes Indicates that...

Page 59: ...isable the audible click heard each time a key is pressed F0XXXXNN Version X X Displays the current firmware revision where F0XXXX is the Radyne ComStream part number and NN is the Radyne ComStream re...

Page 60: ...DMD2401 DMD2401L DMD2401 IBS IDR Satellite Modem User Interfaces TM065 Rev 3 3 4 21...

Page 61: ...0 4800 9600 19200 Allows the user to select Remote Port Baud Rate 4 2 8 Test Menu Options and Parameters 2047 Test None Tx Rx Tx Rx Allows the user to enable disable the 2047 Pattern Test Tx enables t...

Page 62: ...ut pure carrier Dual Causes a double sideband output Offset Causes a single sideband output Normal Causes the Modulator to output normal modulation TxForce Alrm No Yes Allows a Major Tx Alarm to be fo...

Page 63: ...mory gets reset 4 3 2 Modem Setup for Terminal Mode Terminal mode communications and protocol is set from the front panel control by setting the Control Mode parameter to Terminal and then setting the...

Page 64: ...nt NO SYNC Events 9 Buffer Fill 50 2047 BER NO SYNC MODULATOR CONTROLS 30 Mod Mode Closed Net 40 Mod Framing None 31 Frequency 70 000000 MHz 41 Carrier Ctl On 50 Data Invert Normal 32 Insert Err 1 42...

Page 65: ...l Inverted 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...

Page 66: ...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 Status...

Page 67: ...Back1 F Yes 41 ForceTxBack4 Normal 61 TxBack2 F Yes 81 RxBack2 F Yes 42 Tx Ckt ID 62 TxBack3 F Yes 82 RxBack3 F Yes 43 Rx Ckt ID 63 TxBack4 F Yes 83 RxBack4 F Yes Enter Selection Number Figure 4 8 IDR...

Page 68: ...ForceTxBack Normal ALARM Mask 80 Prompt P No 81 Service P No 42 Tx Ckt ID 82 BER P No 43 Rx Ckt ID ALARM Mask 83 RxBack P No 64 TxBack P No Enter Selection Number Figure 4 10 D I G 703 Interface Contr...

Page 69: ...Number Figure 4 12 V 35 RS4 22RS 232 Interface Control Terminal Screen 1 Main Menu IF Input dBm 31 3 7 V SW F04780 Ver 1 3 2 Control Mode Ft Panel Eb No NO SYNC Intf Pres V35 422 Async 3 Remote Mode...

Page 70: ...ntrol Mode Terminal Eb No NO SYNC Intf Pres Universal 3 Remote Mode RS 485 Uncorrected SER 2 43E 1 5 V Mon 4 8 4 Remote Addr 32 Corrected BER 7 00E 4 12 V Mon 12 5 Offset Frq Hz 24996 12 V Mon 12 1 6...

Page 71: ...No 43 Rx Ckt ID ALARM Mask 83 RxBack P No 64 TxBack F No Enter Selection Number Figure 4 16 IBS Universal G 703 Interface Control Terminal Screen 1 Main Menu IF Input dBm 40 2 9 V SW F04780 Ver 2 2 Co...

Page 72: ...0 00 Intf Pres IDR V 35 422 3 Remote Mode RS 485 Uncorrected SER 0 E 5 5 V Mon 4 8 4 Remote Addr 32 Corrected BER 0 E 12 12 V Mon 12 5 Offset Frq Hz 1 12 V Mon 12 1 6 Center Buffer 2047 Error Cnt NO S...

Page 73: ...43 Rx Ckt ID ALARM Mask 83 RxBack P No 64 TxBack P No Enter Selection Number Figure 4 20 IBS RS 422 V 35 RS 232 Interface Control Terminal Screen 1 Main Menu IF Input dBm 40 2 9 V SW F04780 Ver 2 2 C...

Page 74: ...LP which serves as a protocol wrapper for the M C data Complete information on monitor and control software is contained in the following sections 4 4 1 Protocol Structure The Communications Specifica...

Page 75: ...value is always 16h 1 Byte BYTE COUNT the Byte Count is the number of bytes in the DATA field two bytes SOURCE ID the Source Identifier defines the multi drop address origin Note that all nodes on a...

Page 76: ...M C computer or by a subordinate piece of equipment such as the DMD2401 requesting access to the bus Data is processed in accordance with the OPCODE and the checksum for the frame is calculated If the...

Page 77: ...ponse code in the OPCODE field of the message packet from the equipment under control If a command packet is sent and not received at its intended destination a timeout condition can occur because the...

Page 78: ...MPARM_XMITPOWERLEVEL_ERROR 0x0410 MPARM_CARRIERCONTROL_ERROR 0x0411 MPARM_CARRIERSELECTION_ERROR 0x0412 MPARM_SPECTRUM_ERROR 0x0413 MPARM_MODE_ERROR 0x0414 MPARM_TERRLOOPBACK_ERROR 0x0415 MPARM_BASEL...

Page 79: ...x061A DPARM_TERRLOOPBACK_ERROR 0x061B DPARM_BASELOOPBACK_ERROR 0x061C DPARM_IFLOOPBACK_ERROR 0x061D DPARM_INTERFACETYPE_ERROR 0x061E DPARM_NOTIMPLEMENTED_ERROR 0x0622 DPARM_DATAINVERT_ERROR 0x0623 DPA...

Page 80: ...esponding multi drop override ID The multi drop override ID is always accepted by devices of the same type on a common control bus independent of the actual DESTINATION ID These override IDs with the...

Page 81: ...es of Radyne equipment with different software revisions they might respond with two different sized packets The remote M C MUST make use of the non volatile count value to index to the start of the v...

Page 82: ...acket This call generates the response packet conveyed to the sender If the IOPT sensed errors in the received packet and an RLLT timeout has not occurred the RLLT causes the equipment to issue the ap...

Page 83: ...DDR FSN OP CODE DATA BYTES CHECKSUM The RLLP Remote Port Packet structure is as follows SYNC Message format header character that defines the beginning of a message The SYNC character value is always...

Page 84: ...Mod Carrier Selection 260Ah Command Mod Clock Control 260Bh Command Mod Clock Polarity 260Ch Command Mod Drop Mode 260Eh Command Mod Output Level 260Fh Command Mod Reed Solomon Encoder 2610h Command M...

Page 85: ...weep Boundary 2A04h Command Demod Demodulation Type 2A07h Command Demod Convolutional Decoder 2A08h Command Demod Differential Decoder 2A09h Command Demod Reed Solomon 2A0Ah Command Demod Mode 2A0Bh C...

Page 86: ...mmand Module Set Time 2C04h Command Module Set Date 2C05h Command Module Set Time and Date 2C06h Command Module Soft Reset 2C07h Command Module Default Configuration 2C30h 4 4 13 Detailed Command Desc...

Page 87: ...bi 1 2 Rate 3 Viterbi 3 4 Rate 5 Viterbi 7 8 Rate 7 Sequential 1 2 Rate 9 Sequential 3 4 Rate 11 Sequential 7 8 Rate 14 Trellis 2 3 20 TPC 0 7932D 21 TPC 0 4953D 0 Disable 1 Enable Unsigned Binary Uns...

Page 88: ...Activity Detect Fault Bit 1 Internal Clock Activity Detect Fault Bit 2 Tx Sat Clock Activity Detect Fault Bit 3 Tx Data Activity Detect Fault Bit 4 Tx Data AIS Detect Fault Bit 5 Transmit EXT BNC Cloc...

Page 89: ...32 Note The following byte applies only if a Symmetric G 703 Interface Card is installed If not ignore 0 G703T1AMI 1 G703T1B8ZS 2 G703BE1 3 G703UE1 Note The following byte applies to all DMD2401 modem...

Page 90: ...s not installed ignore If an IDR or IBS interface card is installed but the transmit mode parameter is not set to IDR mode these bytes can be set to any valid values but will be ignored 0 Voice 1 64 K...

Page 91: ...0 Backward Alarm Received from Drop Terrestrial Bits 2 7 Spares Force D I Satellite Backward Alarm to be transmitted Edit mapping of Satellite channels to dropped Terrestrial Time Status Bytes 1 1 1 1...

Page 92: ...ternal Clock Activity Detect Fault Bit 2 Tx 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 Det...

Page 93: ...not ignore this byte Bit 0 Backward Alarm 1 Bit 1 Backward Alarm 2 Bit 2 Backward Alarm 3 Bit 3 Backward Alarm 4 Bits 4 7 Spare 0 Not Transmitted 1 Transmitted 0 Front Panel 1 Terminal 2 Computer Bit...

Page 94: ...face FPGA Fault Bit 5 Battery Fault Bit 6 RAM ROM Fault Bit 7 Spare 0 Pass 1 Fail Bit 0 Transmit Processor Fault Bit 1 Transmit Output Power Level Fault Bit 2 Transmit Oversample PLL Lock Fault Bit 3...

Page 95: ...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 is installed and the AUPC option is installed an...

Page 96: ...ity 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 Fault Bit 7 Tx BUC Fa...

Page 97: ...r s Configuration 4 3 4 4 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 Unsi...

Page 98: ...External SCTE 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 Cloc...

Page 99: ...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 applies only if an Asynchronous Interface Card is installed If not set to zero 0 1200 1 2400...

Page 100: ...option is also installed If not set to zero Note AUPC minimum power level AUPC default power level AUPC max power level Unsigned Binary 1 Decimal Point Implied Note The following two bytes apply only...

Page 101: ...rd is installed but the transmit mode parameter is not set to IDR mode these bytes can be set to any valid values but will be ignored 0 Voice 1 64 Kbit Data Note The following byte applies only if an...

Page 102: ...et to any valid values but will 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...

Page 103: ...ny valid values but will be ignored 20 to 10 signed binary value in dB Opcode 2602h Command a Modulator s Frequency 4 Frequency Note The following command will also turn the carrier off to protect the...

Page 104: ...odulator s Clock Control 1 Clock Control 0 Internal SCT 1 External SCTE Opcode 260Ch Command a Modulator s Clock Polarity 1 Clock Polarity 0 Normal 1 Inverted 2 Auto Opcode 260Dh Command a Modulator s...

Page 105: ...ctrum 0 Normal 1 Inverted Opcode 2612h Command a Modulator s Operating Mode 1 Operating Mode 0 Normal 1 2047 Test Opcode 2613h Command a Modulator s Scrambler Control 1 Scrambler Control 0 Off 1 On Op...

Page 106: ...32 1 RS 485 0 V 35 1 RS 422 2 RS 232 Opcode 2631h Command a Modulator s CTS Mode and Polarity 1 CTS Control Bit 0 Polarity 0 Normal 1 Inverted Bits 1 and 2 Mode 0 Always On factory default 1 CTS refle...

Page 107: ...inary Value 1Hz Steps Binary Value 1 BPS Steps Sweep Limits Max of 42 kHz Unsigned Binary Value in Hz 0 Internal 1 External Lower Level Limit Binary Value 1 dB Steps Negative Sign Implied 0 QPSK 1 BPS...

Page 108: ...rflow Bit 1 Buffer Overflow Bit 2 Buffer Under 10 Bit 3 Buffer Over 90 Bit 4 Receive FPGA Configuration Alarm Fault Bit 5 Rx LNB Fault LBST Only Bits 6 7 Spares 0 Mask 1 Allow Bit 0 IF Synthesizer Loc...

Page 109: ...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 byte applies only if an asynchronous interface ca...

Page 110: ...to IDR Mode If not ignore 0 Internal 1 External 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 0 Voice 1 64 K...

Page 111: ...lite Frame Fault Bit 2 Spare Bit 3 IBS Alarm if BER 10 03 Bit 4 IBS Prompt Alarm Bit 5 IBS Service Alarm Bits 6 7 Spares 0 Disable 1 T1 D4 2 T1 ESF 3 PCM 30 4 PCM 30C 5 PCM 31 6 PCM 31C 7 T1 SLC96 Map...

Page 112: ...der 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 Externa...

Page 113: ...attern 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 2 Rx Satellite Cloc...

Page 114: ...Negative Sign Implied Bit 0 IBS Satellite Multiframe Loss Bit 1 IBS Satellite Frame Loss Bit 2 Spare Bit 3 IBS Alarm if BER 10 03 Bit 4 IBS Prompt Alarm Bit 5 IBS Service Alarm Bits 6 7 Spares Bit 0...

Page 115: ...0 Pass 1 Fail Bit 0 Buffer Clock Activity Detect Fault Bit 1 External BNC Activity Detect Fault Bit 2 Rx Satellite Clock Activity Detect Fault Bit 3 External Reference PLL Activity Fault Bits 4 7 Spar...

Page 116: ...ault 0 Pass 1 Fail Bit 0 Buffer Clock Activity Detect Fault Bit 1 External BNC Activity Detect Fault Bit 2 Rx Satellite Clock Activity Detect Fault Bit 3 External Reference PLL Activity Fault Bits 4 7...

Page 117: ...it 1 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 Bit 0 IBS Backward Alarm or IDR Backward Alarm 1 Bit...

Page 118: ...Buffer Overflow Bit 2 Buffer Under 10 Bit 3 Buffer Over 90 Bit 4 Receive FPGA fault Bit 5 Rx LNB Fault LBST Only Bits 6 7 Spares 0 Pass 1 Fail Bit 0 IF Synthesizer Lock Detect Fault Bit 1 Rx Oversampl...

Page 119: ...Bit 3 Buffer Over 90 Bit 4 Receive FPGA Fault Bit 5 Rx LNB Fault LBST Only Bits 6 7 Spares 0 Pass 1 Fail Bit 0 IF Synthesizer Lock Detect Fault Bit 1 Rx Oversample PLL Lock Detect Fault Bit 2 Buffer...

Page 120: ...2047 BER Status 1 Valid Bits 2 3 EbNo Status 0 EbNo is Invalid 1 EbNo is Valid 2 EbNo is Smaller Than Indicated Value 3 EbNo is Greater Than Indicated Value Bits 4 7 Reserved Binary Value in 1 dB Ste...

Page 121: ...ign Implied 0 QPSK 1 BPSK 2 8PSK 4 OQPSK 0 None 1 Viterbi 1 2 Rate 3 Viterbi 3 4 Rate 5 Viterbi 7 8 Rate 7 Sequential 1 2 Rate 9 Sequential 3 4 Rate 11 Sequential 7 8 Rate 14 Trellis 2 3 20 TPC 0 7932...

Page 122: ...Spares 0 Mask 1 Allow Bit 0 IF Synthesizer Lock Detect Fault Bit 1 Rx Oversample PLL Lock Detect Fault Bit 2 Buffer Clock PLL Lock Detect Fault Bit 3 Viterbi Decoder Lock Fault Bit 4 Sequential Decode...

Page 123: ...installed If not set to zero 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 set to zero 0 RS 232...

Page 124: ...If not set to zero 0 Voice 1 64 K data Bit 0 IDR Backward Alarm 1 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 byt...

Page 125: ...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 126: ...r Depth 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 Opcode 2A0Dh Command a Demodulator s Descrambler Con...

Page 127: ...DMD2401 DMD2401L DMD2401 IBS IDR Satellite Modem 4 88 TM065 Rev 3 3 2 T1 ESF 3 PCM 30 4 PCM 30C 5 PCM 31 6 PCM 31C 7 T1 SLC96 Opcode 2A17h Command a Demodulator s Operating Mode 1 Operating Mode 0 St...

Page 128: ...sync Terr Interface Type Demod Async Terr Interface Type Demod Async Terr Interface Type Demod Async Terr Interface Type Async Framing 0 No Framing Async Off 1 IBS Framing Async On 2 IBS Framing Async...

Page 129: ...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 External Reference PLL Lock Fault 0 Pass 1 Fa...

Page 130: ...Detect Fault Bit 1 Rx Oversample PLL Lock Detect Fault Bit 2 Buffer Clock PLL Lock Detect Fault Bit 3 Viterbi Decoder Lock Fault Bit 4 Sequential Decoder Lock Fault Bit 5 Rx 2047 Test Pattern Lock Fa...

Page 131: ...re Bit 0 Rx Viterbi Decoder Present Bit 1 Rx Sequential Decoder Present Bit 2 Rx RS Decoder Present Bit 3 Rx Turbo Product Decoder Present Bit 4 Rx 8PSK Decoder Present Bit 5 Turbo Codec Present Bits...

Page 132: ...DMD2401 DMD2401L DMD2401 IBS IDR Satellite Modem User Interfaces TM065 Rev 3 3 4 93 Opcode 261Bh Command a Module s External Reference Frequency 4 External Ref Freq Unsigned Binary Value in Hz...

Page 133: ...ternal Reference Frequency 1 1 Map to Change New Map 0 Drop Active Map 1 Insert Active Map 2 Drop Edit Map 3 Insert Edit Map 4 11 User Map 1 through 8 Opcode 2C03h Command Clear all Latched Alarms No...

Page 134: ...126 7E 1 Reed Solomon K 112 70 1 Reed Solomon T 7 07 1 RS Interleaver Depth 4 04 1 Scrambler Control 1 On 01 1 Scrambler Type 2 V35_IESS 02 2 Transmit Power Level 30 0 dBm FE D4 1 Differential Encoder...

Page 135: ...0 RS 422 00 1 Multiprotocol Interface Type 0 RS 422 00 1 G 703 Interface Type 0 G703T1AMI 00 1 BPSK Symbol Pairing 0 Normal 00 1 IDR or IBS Daughter Card Fault Mask 1 Not Masked 01 1 Transmit Mode 0 C...

Page 136: ...1 Convolutional Decoder 1 Viterbi Rate 01 1 Reed Solomon 0 Disable 00 1 Reed Solomon N 126 7E 1 Reed Solomon K 112 70 1 Reed Solomon T 0 00 1 RS Interleaver Depth 4 04 1 Differential Decoder 1 On 01 1...

Page 137: ...ock When CD False 00 1 Data Invert 0 Normal 00 1 Async Mode 0 Async Off 00 1 Async Baud Rate 3 9600 03 1 Async Port Type 0 RS 232 00 1 Async Terrestrial Interface Type RS 422 00 1 Multiprotocol Interf...

Page 138: ...Satellite Modem User Interfaces TM065 Rev 3 3 4 99 4 5 Terminal Port User Interface The Terminal Port of the DMD2401 allows for complete control and monitoring of all DMD2401 parameters and functions...

Page 139: ...User Interfaces DMD2401 DMD2401L DMD2401 IBS IDR Satellite Modem 4 100 TM065 Rev 3 3 This Page is Intentionally Left Blank...

Page 140: ...side of the unit as viewed from the rear Primary power applied to the port with the supplied power cable is 10 240 VAC 50 60 Hz Integrated into the power entry module is the Power On Off Rocker Switch...

Page 141: ...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 MHz Amplitude 0 2...

Page 142: ...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 3 Table 5 3 Alarm Relays Alarm No Alarm Modulator Pins 2 and 3 Shorted Pi...

Page 143: ...and allows the use of RS 422 RS 232 and V 35 Interfaces It is a 37 Pin Female Connector Refer to Table 5 6 for RS 422 connector pinouts and Tables 5 7 and 5 8 for RS 232 and V 35 adapters Table 5 6 Sy...

Page 144: ...the modem is not necessary and is ignored The DM DSR Output of the modem is located on Pins 11 and 29 as shown above 5 2 9 1 RS 232 Adapter to J9 Table 5 7 provides the pinouts if the user wishes to...

Page 145: ...1 GND Signal Ground C RTS 7 RS A Request to Send A Input D CTS 9 CS A Clear to Send A Output E DSR 11 DM A DSR Data Mode A Output F RR 13 RR A RLSD Receive Ready A Output P SD A 4 SD A Send Data A Inp...

Page 146: ...em 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 MHz Amplitude 0 2 Vp p to 5 Vp...

Page 147: ...odem It is a 9 Pin Female D Connector Refer to Table 5 5 for the connector pinouts 5 4 8 ASYNC DATA J8 The Asynchronous Data J8 is the data interface for asynchronous data It uses RS 232 and RS 485 In...

Page 148: ...ity 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 MHz Amplitude 0 2 Vp p to 5 Vp p Type Sinewave or Square...

Page 149: ...is the redundancy switch connector It is a 68 Pin High Density Female Connector Refer to Table 5 10 for connector pinouts Table 5 10 Switch Interface Port 68 Pin High Density Female J8 Pin Number Sig...

Page 150: ...Output 4 Normally Closed Output 29 TXO A IBS Transmit Octet Input A Input 30 SYNC DM A Synchronous Data Mode A Output 31 SYNC CS A Synchronous Data Clear to Send A Output 32 RXO A IBS Receive Octet Ou...

Page 151: ...Alarm Input 2 Input 55 DMD FLT Demod Fault Open Collector Output Output Open Collector 56 ES RXD B IBS ES Receive Data Input B Output 57 GND Ground 58 ESCTXC B IDR ESC Transmit 8 Kbps Output Clock B O...

Page 152: ...iming B Output 6 RD A Receive Data A Output 24 RD B Receive Data B Output 7 RS A Request to Send A Input 25 RS B Request to Send B Input 8 RT A Receive Timing A Output 26 RT B Receive Timing B Output...

Page 153: ...ected 4 IBS Service 2NO Service Alarm Out 2 NO Output 5 NC Not Connected 6 Not Used 7 GND Ground 8 Not Used 9 NC No Connection 10 Not Used 11 Not Used 12 NC No Connection 13 NC No Connection 14 IBS Pr...

Page 154: ...ection 5 8 for configuration switch settings Table 5 13 Asynchronous Interface 9 Pin Female D Connector J15 Pin Number Signal Description Direction 1 TX 485 B Transmit Data RS485 Input 2 TXD 232 Trans...

Page 155: ...ll 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 MHz Amplitude 0 2 Vp p to 5 Vp p Typ...

Page 156: ...J7 The Remote Port J7 is the RS 485 connection for remote monitor and control of the modem It is a 9 Pin Female D Connector Refer to Table 5 5 for the connector pinouts 5 6 8 SWITCH INTERFACE J8 The...

Page 157: ...O Output 9 NC No Connection 10 ESCBWI 2 Backward Alarm In 2 Input 11 ESCBWI 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...

Page 158: ...ace 15 Pin Female D Connector J15 Pin Number Signal Description Direction 1 ESCRXO B Rx Octet B Output 2 ESCRXC B Rx Clock B Output 3 ESCRXD B Rx Data B Output 4 NC No Connection 5 NC No Connection 6...

Page 159: ...rnal Clock A Input 8 BAL EXC B External Clock B Input 3 RD A Receive Data A Output 4 GND Ground 11 RD B Receive Data B Output 12 DDO A Drop Data Out A Output 5 DDO B Drop Data Out B Output 13 IDI A In...

Page 160: ...ESCAUDTX 1B Tx Audio 1B Input 7 ESCAUDRX 1B Rx Audio 1B Output 8 ESCAUDTX 2A Tx Audio 2A Input 9 ESCAUDRX 2A Rx Audio 2A Output Table 5 18 ESC 64 K DATA 9 Pin Female D Connector J17 Pin Number Signal...

Page 161: ...e D Connector J17 Pin Number Signal Description Direction 1 TX 485 B Transmit Data RS485 Input 2 TXD 232 Transmit Data RS232 Input 3 RXD 232 Receive Data RS232 Output 5 GND Ground 4 NC Not Connected 9...

Page 162: ...in 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 MHz Amplitude 0 2 Vp...

Page 163: ...rm 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 21 Table 5 21 Alarm Relays Alarm No...

Page 164: ...the redundancy switch connector It is a 68 Pin High Density Female Connector Refer to Table 5 8 for connector pinouts 5 7 9 SD J9 The Send Data Port J9 is the unbalanced Send Data BNC Connector 5 7 10...

Page 165: ...ill 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 MHz Amplitude 0 2 Vp p to 5 Vp p Ty...

Page 166: ...hat the NC and NO Normally Closed and Normally Open nomenclature applies to non energized relays 5 8 7 REMOTE J7 The Remote Port J7 is the RS 485 connection for remote monitor and control of the modem...

Page 167: ...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 168: ...Input S SD B Send Data B Output R RD A Recieve Data A Input T RD B Receive Data B Output U TT A Terminal Timing A Output W TT B Terminal Timing B Input V RT A Receive Timing A Output X RT B Receive Ti...

Page 169: ...NO Output 5 NC No Connection 6 ESCBWO 3NO Backward Alarm Out 3 NO Output 7 GND Ground 8 ESCBWO 4NO Backward Alarm Out 4 NO Output 9 NC No Connection 10 ESCBWI 2 Backward Alarm In 2 Input 11 ESCBWI 4 B...

Page 170: ...ace 15 Pin Female D Connector J15 Pin Number Signal Description Direction 1 ESCRXO B Rx Octet B Output 2 ESCRXC B Rx Clock B Output 3 ESCRXD B Rx Data B Output 4 NC No Connection 5 NC No Connection 6...

Page 171: ...rnal Clock A Input 8 BAL EXC B External Clock B Input 3 RD A Receive Data A Output 4 GND Ground 11 RD B Receive Data B Output 12 DDO A Drop Data Out A Output 5 DDO B Drop Data Out B Output 13 IDI A In...

Page 172: ...ESCAUDTX 1B Tx Audio 1B Input 7 ESCAUDRX 1B Rx Audio 1B Output 8 ESCAUDTX 2A Tx Audio 2A Input 9 ESCAUDRX 2A Rx Audio 2A Output Table 5 31 ESC 64 K DATA 9 Pin Female D Connector J17 Pin Number Signal...

Page 173: ...ted below in Tables 5 33 through 5 37 are used to configure the Async Port for the following applications The DIP Switches are located on the inside of the unit on the Async Card with the exception of...

Page 174: ...t switches To configure it find the resistor location that corresponds to the equivalent switch on the other interfaces and install the appropriate resistor To place a switch in the OFF position corre...

Page 175: ...on that corresponds to the equivalent switch on the other interfaces and install the appropriate resistor To place a switch in the OFF position corresponds to a TBD Ohm resistor To place a switch in t...

Page 176: ...NA 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 Cause Receive carrier frequency outside of...

Page 177: ...ve are 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...

Page 178: ...5 Rev 3 3 6 3 Table 6 2 DMD2401 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 exist...

Page 179: ...represents the various Faults that the modem may identify The top horizontal column indicates the various actions that the modem will undertake These actions may be in the form of a relay a switch or...

Page 180: ...DMD2401 DMD2401L DMD2401 IBS IDR Satellite Modem Maintenance TM065 Rev 3 3 6 5 Figure 6 2 IDR BER Curve Figure 6 3 Reed Solomon IDR BER Curve...

Page 181: ...Maintenance DMD2401 DMD2401L DMD2401 IBS IDR Satellite Modem 6 6 TM065 Rev 3 3 Figure 6 4 Sequential 384 Kbps BER Curve Figure 6 5 Trellis 8PSK BER Curve...

Page 182: ...2401 Figure 6 6 DMD2401 AGC Curve IBS Fault Conditions and Actions Figure 6 7 and Table 6 4 illustrate the IBS Fault Conditions and Actions to be taken at the Earth Station at the Terrestrial Data Str...

Page 183: ...AH2 1 in Bit 3 of NFAS TSO Yellow Alarm AH2 1 in Bit 3 of NFAS TSO Yellow Alarm Action to Satellite Across Interface D AD1 AIS in Relevant TS s AD3 1111 in RelevantTS16 s AD1 AIS in Relevant TS s AD3...

Page 184: ...90 and 100 180 MHz or 950 1750 MHz Optional L Band 1 Hz steps Frequency Stability 2 5 ppm 220 Hz at 88 MHz Level Control 5 to 30 0 dBm 0 1 dB steps Level Stability 0 5 dB from 0 to 50 C Impedance RU...

Page 185: ...4 Note Eb No typical values include effect of using differential encoding and V 35 scrambler Descrambler Intelsat V 35 mode selectable Data Buffering 8 bits to 262 144 bits in 8 bit steps Terrestrial...

Page 186: ...or Scrambler On Off Modulator Demodulator Scrambler Selections Modulator Demodulator Data inverted or non inverted Modulator Demodulator Clock Source and Phase Demodulator FIFO Size Delay and Status D...

Page 187: ...Technical Specifications DMD2401 DMD2401L DMD2401 IBS IDR Satellite Modem 7 4 TM065 Rev 3 3 This Page is Intentionally Left Blank...

Page 188: ...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 20 10 14 15 16...

Page 189: ...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 33 36 37 38 39 40 41 42 43 45 30 3...

Page 190: ...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 58 60 62 63 64 65 66 67 68 69 70 71 73 55 59 61 63 64 65 66 67...

Page 191: ...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 87 89 90 91 92 93 94 95 96 97 98 99 100 102 82 85 88 90 91 92 93 94 95 96 97 98 99 100 101 103 83 86 89...

Page 192: ...20 121 122 123 124 125 126 128 110 112 114 116 117 118 119 120 121 122 123 124 125 126 127 129 111 113 115 117 118 119 120 121 122 123 124 125 126 127 128 130 112 114 116 117 119 120 121 122 123 124 1...

Page 193: ...52 153 154 155 157 138 140 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 158 139 141 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 159 140 142 144 145 146 147 148 149 150 1...

Page 194: ...180 181 182 183 184 186 166 168 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 187 167 169 170 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 188 168 170 171 173 174 175...

Page 195: ...209 210 211 212 214 195 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 215 196 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 216 197 198 200 201 202 203 204...

Page 196: ...227 228 229 230 231 232 233 234 235 236 237 239 220 221 222 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 240 220 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239...

Page 197: ...250 252 233 234 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 253 234 235 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 254 235 236 238 239 240 241 242 243 244 245...

Page 198: ...t the output is automatically turned on after the change 3 Modulator output is turned off before reprogramming modulator functions that may alter the output spectrum through the front panel and the us...

Page 199: ...Appendices DMD2401 DMD2401L DMD2401 IBS IDR Satellite Modem 8 12 TM065 Rev 3 3 This Page is Intentionally Left Blank...

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