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Radyne DMD2401 Operation Manual

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DMD2401/DMD2401L/
DMD2401 IBS/IDR
Satellite Modem

Installation and Operation Manual

TM065 - Rev. 3.3
May, 2002
- NOTICE -
© 2002, Radyne ComStream 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 officer of
Radyne ComStream Corporation.
Radyne ComStream Corporation
3138 E. Elwood St.
Phoenix, AZ 85034
(602) 437-9620
Fax: (602) 437-4811

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  • Page 1: Installation And Operation Manual

    Installation and Operation Manual TM065 - Rev. 3.3 May, 2002 - NOTICE - © 2002, Radyne ComStream 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 officer of Radyne ComStream Corporation.
  • Page 3 Non-Volatile Section of the Remote Communications Specification, and status of the features, if any, are added at the end of the Volatile Section. If a remote M&C queries two pieces of Radyne ComStream Corporation equipment with different revision software, they could respond with two different sized packets.
  • Page 4 Radyne ComStream Corporation’s obligation under its warranty is limited in accordance with the periods of time and all other conditions stated in all provisions of this warranty. This warranty applies only to defects in material and workmanship in products manufactured by Radyne ComStream Corporation. Radyne ComStream Corporation makes no warranty whatsoever concerning products or accessories not of its manufacture.
  • Page 5 Before a warranty repair can be accomplished, a Repair Authorization must be received. It is at this time that Radyne ComStream Corporation will authorize the product or part to be returned to the Radyne ComStream Corporation facility or if field repair will be accomplished. The Repair Authorization may be...
  • Page 6 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 information contained in this document.
  • Page 7 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem This Page is Intentionally Left Blank TM065 – Rev. 3.3...

  • Page 8: Table Of Contents

    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 Initial Configuration Check _________________________________ 3-3 3.4 DMD2401 Automatic Uplink Power Control (AUPC Operation) _____________ 3-3 3.5 DMD2401 Asynchronous Overhead Operation__________________________ 3-4 3.5.1 Asynchronous Framing/Multiplexer Capability _________________________ 3-4 3.6 Standard IBS Mode _______________________________________________ 3-6...
  • Page 9 3.9 IDR or IBS/D&I Configuration Instructions _____________________________ 3-7 3.9.1 IDR Configuration (Older Modems) _________________________________ 3-7 3.9.2 IBS/D&I Configuration (Older Modems) ______________________________ 3-7 3.10 Configuring the DMD2401 for Drop and Insert _________________________ 3-7 3.10.1 Interface Type ________________________________________________ 3-8 3.10.2 Mode _______________________________________________________ 3-9 3.10.3 Data Rate ____________________________________________________ 3-9...
  • Page 10 5.0 DMD2401 Connections ____________________________________________ 5-1 5.1 AC Power Input/Switch ____________________________________________ 5-1 5.2 DC Power Input/Switch ____________________________________________ 5-1 5.3 DMD2401 with RS-422/-449 Data Interface ____________________________ 5-2 5.3.1 RCV IF IN (J1) _________________________________________________ 5-2 5.3.2 EXT REF IN (J2) _______________________________________________ 5-2 5.3.3 EXT CLK (J3) __________________________________________________ 5-2 5.3.4 XMIT IF OUT (J4)_______________________________________________ 5-2...
  • Page 11 5.2.9 DATA INTERFACE (J9) __________________________________________ 5-4 5.2.9.1 RS-232 Adapter to J9 __________________________________________ 5-5 5.2.9.2 V.35 Adapter to J9 ____________________________________________ 5-6 5.4 DMD2401 with RS-422/-449 Data Interface ____________________________ 5-7 5.4.1 RCV IF IN (J1) _________________________________________________ 5-7 5.4.2 EXT REF IN (J2) _______________________________________________ 5-7 5.4.3 EXT CLK (J3) __________________________________________________ 5-7...
  • Page 12 5.7.12 ESC ALARMS (J14) ___________________________________________ 5-25 5.7.13 ESC 8K DATA (J15)___________________________________________ 5-25 5.7.14 ESC 64K DATA/AUDIO (J17) ___________________________________ 5-25 5.8 DMD2401 Universal Interface ______________________________________ 5-26 5.8.1 RCV IF IN (J1) ________________________________________________ 5-26 5.8.2 EXT REF IN (J2) ______________________________________________ 5-26 5.8.3 EXT CLK (J3) _________________________________________________ 5-26 5.8.4 XMIT IF OUT (J4)______________________________________________ 5-26...
  • Page 13 6.2.2.3 Latched Alarms _______________________________________________ 6-2 6.3 DMD2401 Fault Tree Matrices ______________________________________ 6-2 6.3.1 Interpreting the Matrices _________________________________________ 6-4 6.4 DMD2401 Bit Error Rate (BER Curves) _______________________________ 6-4 6.5 DMD2401 AGC Curve_____________________________________________ 6-7 Section 7 – Technical Specifications 7.0 Introduction _____________________________________________________ 7-1 7.1 Transmit and Receive Data Rates ___________________________________ 7-1...
  • Page 14 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Table of Contents Section 8 – Appendices Appendix A – Reed-Solomon Codes _____________________________________ 8-1 Appendix B - Carrier Control __________________________________________ 8-11 B.0 States ________________________________________________________ 8-11 B.1 Description ____________________________________________________ 8-11 TM065 - Rev. 3.3 xiii...

  • Page 16: Section 1 - Introduction

    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 the range of 9.6 Kbps to 4.375 Mbps in 1 bps steps.

  • Page 17: Dmd2401 Available Options

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem The DMD2401 can track and acquire a carrier over a programmable range of ±1 kHz to ±42 kHz. Acquisition times of less than 10 seconds are typical at data rates of 64 Kbps over a range of ±...

  • Page 18: Customized Options

    1.1.8 Turbo Product Codec (TPC) The DMD2401 can be equipped at the factory with TPC as an add-on option. The TPC Option is a daughter card, which can be added by installing the card on modems with the required header.
  • Page 19 Introduction DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem This Page is Intentionally Left Blank TM065 – Rev. 3.3...

  • Page 20: Section 2 - Installation

    The DMD2401 Modulator is shipped fully assembled. It does not require removal of the covers for any purpose in installation. The only replaceable assembly in the unit is the data interface and is not intended to be accomplished in the field.

  • Page 21: Mounting Considerations

    The DMD2401 is designed for indoor applications only. The only tools required for rack mounting the DMD2401 is a set of four rack mounting screws and an appropriate screwdriver. Rack mount brackets are an integral part of the cast front bezel of the unit and are not removable.
  • Page 22 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Installation Terminal Setup: Baud Rate: 19.2 K (Can be changed via front panel) Data Bits: Parity: No Parity (Fixed) Stop Bits: 1 Stop Bit TM065 - Rev. 3.3...
  • Page 23 Installation DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem This Page is Intentionally Left Blank TM065 – Rev. 3.3...

  • Page 24: Section 3 - Operation

    3.2 Applications Following are just a few representative forms of satellite communication links and networks in which the DMD2401 modem may be used. 3.2.1 SCPC Point-to-Point Links The most straightforward application for a satellite modem is to serve as the Data Communications Equipment (DCE) for a point-to-point data link.

  • Page 25: Scpc Point To Multi-Point Links In A Broadcast Application

    The TDMA network usually looks like the Star network shown in Figure 3-2. The DMD2401 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.

  • Page 26: Dmd2401 Initial Configuration Check

    Operation 3.3 DMD2401 Initial Configuration Check The DMD2401 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...

  • Page 27: Dmd2401 Asynchronous Overhead Operation

    The other controls are built into the operating control software to limit response times and detect adverse operating conditions. 3.5 DMD2401 Asynchronous Overhead Operation 3.5.1 Asynchronous Framing/Multiplexer Capability The Asynchronous Framing/Multiplexer is capable of multiplexing a relatively low-speed overhead channel onto the terrestrial data stream resulting in a slightly higher combined or aggregate data rate through the modem.
  • Page 28 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Operation Baud Rate Baud Rate Kbps Example for Example for Kbps Standard Enhanced Mode 19.2 1200 2400 4800 4800 1024 9600 1152 9600 1280 9600 1408 9600 1536 9600 1664 19200 1792 19200 1920 19200 2048...

  • Page 29: Standard Ibs Mode

    DMD2401 is at both ends of a link. In this mode, the overhead signaling bytes 16 and 48 can be used to implement a significantly higher speed ES to ES Data Channel under software control.

  • Page 30: To Disable The Esc Backward Alarms

    Install Jumpers R38 and R40 located on the AS/3771 Daughter Card. Cycle power on the unit. 3.10 Configuring the DMD2401 for Drop and Insert Several dependencies exist when configuring the modem for Drop and Insert (D&I). The following paragraphs explain these dependencies and provide the user with the information required to ensure smooth transition into Drop &...

  • Page 31: Interface Type

    Operation DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem The following steps should be followed when setting up Drop & Insert: Select the appropriate interface type: Newer Modem: B.T1.AMI Balanced T1 (1.544 Mb) AMI Coding B.T1.B8ZS Balanced, T1 (1.544 Mb), B8ZS Coding, U.E1 Unbalanced, E1 (2.048 Mb), HDB3 Coding B.E1...

  • Page 32: Mode

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Operation 3.10.2 Mode The operational mode of the modem often determines which additional menus and displays are available 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 the operational mode to D&I.

  • Page 33: Terrestrial Framing - Drop Mode/Insert Mode

    Operation DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Number of D&I Data Rates Slots (n) 64,000 128,000 192,000 256,000 320,000 384,000 512,000 640,000 768,000 960,000 1,024,000 1,280,000 1,536,000 1,920,000 (valid with E1 Interface only) 3.10.4 Terrestrial Framing - Drop Mode/Insert Mode The Drop Mode selection and the Insert Mode selection identify the terrestrial data-framing format.

  • Page 34: Alarms

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Operation When the insert terrestrial frame source selection is set to External, the received satellite data will be clocked out of the Doppler buffer based upon the clock recovered from the insert data input. Therefore, the Buffer Clock selection will automatically be set to External and cannot be modified.

  • Page 35: Drop And Insert Mapping

    Operation DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 3.11 Drop and Insert Mapping The following displays under Interface D&I Setup ( both Tx and Rx ), are editing displays only: SATCh Enter to Edit Any changes made in these displays are made on the screen, but are not entered into the modem.

  • Page 36: Loopbacks

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Operation For the Receive Side: With Rx Side Channels configured as follows: CH1 to TS1, CH2 to TS2, CH3 to TS3 and CH4 to TS4. After the timeslots are assigned properly, scroll to the Mapping Menu and use the above procedure to enter the settings into the modem.

  • Page 37: Baseband Loopback

    Baseband Loopback provides the following data loopback on the baseband (or framing card) and allows testing of the terrestrial interface of the modem: Note: On the DMD2401, a framing card is required to properly use any of the baseband loopback functionality.
  • Page 38 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Operation 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 Loopback TM065 - Rev. 3.3 3-15...
  • Page 39 Operation DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Figure 3-9. IF Loopback 3-16 TM065 – Rev. 3.3...

  • Page 40: Section 4 - User Interfaces

    Terminal 4.1 Front Panel User Interface The front panel of the DMD2401 allows for complete control and monitor of all DMD2401 parameters and functions via a keypad, LCD display and status LEDs. The front panel layout is shown in Figure 4-1, showing the location and labeling of the front panel.

  • Page 41: Front Panel Led Indicators

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 4.1.2 Front Panel LED Indicators Eight LEDs on the DMD2401 front panel (Refer to Table 4-2) indicate the status of the DMD2401’s operation. The LED colors maintain a consistent meaning. Green signifies that the indication is appropriate for normal operation, Yellow means that there is a condition not proper for normal operation, and Red indicates a fault condition that will result in lost communications.

  • Page 42: Parameter Setup

    Depress <ENTER> again and re-enter the new parameters followed by <ENTER>. Following a valid input, the DMD2401 will place the new setting into the nonvolatile EEPROM making it available immediately and available the next time the unit is powered-up.’...

  • Page 43: Front Panel Control Screen Menus

    User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 4.2 Front Panel Control Screen Menus The DMD2401 Front Panel Control Screens are broken down into sections under several Main Menus. 4.2.1 Main Menus Modulator Demodulator Interface Monitor Alarms System Test 4.2.2 Modulator Menu Options and Parameters Mod Mode: {IDR, IBS, D&I, Closed Net}...
  • Page 44 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces D&I Mode: (IESS-308) Data Rates: n x 64 Framing Type: 1/15 (IBS) Scrambler Type: Spectrum Mask: Intelsat Closed Net: All possible combinations allowed Mod IF (menu): Freq (MHz): {50 – 90 MHz, 100 – 180 MHz, or 950 – 1750 MHz} Allows the user to enter the Modulator IF Frequency in 1 Hz increments.

  • Page 45: Demodulator Menu Options And Parameters

    User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Data Invert: {Normal, Inverted} Allows the user to invert the data. IDR OH Type: {Voice, 64Kbit} Available with 96 Kbps (IDR) Framing. Symbol Pair: {Normal, Swapped} Available in BPSK Modulation. ReedSolomon (menu): ModRS Enable:...
  • Page 46 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces D&I Mode: (IESS-308) Data Rates: n x 64 Framing Type: 1/15 (IBS) Scrambler Type: Spectrum Mask: Intelsat Closed Net: All possible combinations allowed Demod IF (menu): Freq (MHz): {50 – 90 MHz, 100 – 180 MHz, or 950 – 1750 MHz} Allows the user to enter the Modulator IF Frequency in 1 Hz increments.
  • Page 47 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Allows the user to invert the data. TM065 – Rev. 3.3...

  • Page 48: Interface Menu Options And Parameters

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces IDR OH Type: {Voice, 64Kbit} Available with 96 Kbps (IDR) Framing. Symbol Pair: {Normal, Swapped} Available in BPSK Modulation. ReedSolomon (menu): DmdRS Enable: {Enable Disable} Enables or disables the Reed-Solomon Decoder DmdRS Codes: {Any valid n/k values can be entered (refer to...
  • Page 49 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem TxAnsync Port: {RS-485, RS-232} Allows the user to select the Transmit Async Port type. Tx G703 Intf: {U.E1, B.E1, B.T1.B8ZS, B.T1.AMI} Allows the user to select the Transmit G.703 Interface type. Tx Univ Intf: {V.35, RS-422, RS-232, U.E1, B.E1, B.T1, B8ZS, BT1.AMI}...

  • Page 50: Monitor Menu Options And Parameters

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces Rx D&I (menu): Insert Mode: {Enable, Disable} E1 Mode: PCM30, PCM30C, PCM31, PCM31C. T1 Mode: T1-D4, T1-ESF, T1-D4-S, T1-ESF-S 4.2.5 Monitor Menu Options and Parameters Level: Estimated receive signal (in dBm) as seen by the Demodulator.

  • Page 51: Alarms Menu Options And Parameters

    User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem BER Exponent: {3 – 9} Sets the time base for the channel error rate measurement, used to estimate Eb/No. 4.2.6 Alarms Menu Options and Parameters Modem Alarms (menu): Active Alrms (menu): Major Tx (menu):...
  • Page 52 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces SigLoss Mask: {Pass/Fail, No/Yes} Indicates that the Demodulator is unable to lock to a signal. FrmSync Mask: {Pass/Fail, No/Yes} Indicates that the framing unit is unable to find the expected framing pattern. MFrmSync Mask:...
  • Page 53 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem RS FIFO Mask: {Pass/Fail, No/Yes} Indicates the status of the Tx Reed-Solomon FIFO. Tx Cal Mask: {Pass/Fail, No/Yes} Indicates that the modem has been calibrated for the output power level. Minor Rx (menu): BufUFlw Mask: {Pass/Fail, No/Yes} Indicates that a Doppler Buffer underflow has occurred.
  • Page 54 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces UnCWord Mask: {Pass/Fail, No/Yes} Indicates the status of the Reed-Solomon uncoded word fault. IBS Alarms (menu): Prompt Mask: {Pass/Fail, No/Yes} Indicates that a Prompt Maintenance Alarm is generated as defined in Rec. ITU-T6.803. Service Mask:...
  • Page 55 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Latched Alrm (menu): Major Tx (menu): TxProc: {Pass/Fail} Tx Processor fault. Indicates a Hardware Transmit DSP failure within the modem. TxPower: {Pass/Fail} Indicates that the Modem Tx Output Power is within the allowed tolerance.
  • Page 56 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces BuffPLL: {Pass/Fail} Indicates that the Buffer Clock PLL is not locked. This alarm will flash ‘On’ during certain modem parameter changes. RxLevel: {Pass/Fail} This alarm indicates that the Receive Automatic Gain Control is saturated (i.e., too much signal power is being supplied to the modem).
  • Page 57 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem VitLock: {Pass/Fail} Indicates that the Viterbi Decoder is not locked. SeqLock: {Pass/Fail} Indicates that the Sequential Decoder is not locked. Rx Activity (menu): Buf Clk Mask: {Pass/Fail, No/Yes} Indicates that the selected buffer clock source is not active.
  • Page 58 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces +12Volt Mask: {Pass/Fail, No/Yes} Indicates 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 is out of range.

  • Page 59: System Menu Options And Parameters

    Allows the user to enable/disable 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 revision number). Firmware Rev. (menu): FPGA #1: {F0XXXXNN, Not Present}...
  • Page 60 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces TM065 - Rev. 3.3 4-21...

  • Page 61: Test Menu Options And Parameters

    User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem DaughterCPLD: {F0XXXXNN, Not Present} Indicates whether the firmware is present. M&C (menu): Term Baud: {300 - 115200} Indicates the Terminal Baud Rate. Emulation: {VT100, ADDS-VP, WYSE 50} Allows the user to select the Terminal Emulation Mode for the Terminal Port.

  • Page 62: Terminal Mode Control

    Allows the user to test Front Panel LED function. 4.3 Terminal Mode Control The DMD2401 Terminal Mode Control allows the use of an external terminal or computer to monitor and control the modem from a full screen interactive presentation operated by the modem itself.

  • Page 63: Modem Terminal Mode Control

    “Control Mode” parameter to “Terminal”, and then setting the “Modem Port,” “Term Baud” and “Emulation” parameters as desired. Then a terminal is connected to Connector J5 on the Back Panel. All operating software for the terminal mode is contained within the DMD2401 modem internal control software.
  • Page 64 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ Main Menu ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ º º º 1 Modulator Controls º º 2 Demodulator Controls º º 3 Event Buffer º º 4 Alarm/Status º º 5 Latched Alarms º º 6 Interface Menu º...
  • Page 65 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 1.Main Menu IF Input (dBm) :-31 [3.7 V] SW:F04780--Ver:1.3 2.Control Mode:Ft Panel Eb/No :>20.00 Intf Pres :IDR G.703 3.Remote Mode :RS-485 Uncorrected SER:0 V Mon :+4.9 4.Remote Addr :101 Corrected BER:0 E-12 +12 V Mon :+12.6 Offset Frq (Hz:+4 -12 V Mon :-11.9...
  • Page 66 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces 1.Main Menu IF Input (dBm) :-31 [3.7 V] SW:F04780--Ver:1.3 2.Control Mode:Terminal Eb/No :>20.00 Intf Pres :IDR G.703 3.Remote Mode :RS-485 Uncorrected SER:0 V Mon :+4.9 4.Remote Addr :101 Corrected BER:0 E-12 +12 V Mon :+12.6 Offset Frq (Hz:+1 -12 V Mon :-11.9...
  • Page 67 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 1.Main Menu IF Input (dBm) :-61 [.9 SW:F04780-- Ver:.2 2.Control Mode:Terminal Eb/No :NO SYNC Intf Pres :IDR G.703 3.Remote Mode :RS-485 Uncorrected SER:NO SYNC V Mon :+4.8 4.Remote Addr :32 Corrected BER:NO SYNC +12 V Mon :+12.4 Offset Frq (Hz):+24999 -12 V Mon :-12.1...
  • Page 68 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces 1.Main Menu IF Input (dBm) :-40 [2.9 V] SW:F04780-- Ver:.2 2.Control Mode:Terminal Eb/No :>20.00 Intf Pres :D&I G.703 3.Remote Mode :RS-485 Uncorrected SER:0 V Mon :+4.8 4.Remote Addr :32 Corrected BER:0 E-12 +12 V Mon :+12.4 Offset Frq (Hz):-8 -12 V Mon :-12.1...
  • Page 69 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 1.Main Menu IF Input (dBm) :-25 [4.2 V] SW:F04780-- Ver:.2 2.Control Mode:Terminal Eb/No :>20.00 Intf Pres :V.35/422/232 3.Remote Mode :RS-485 Uncorrected SER:0 V Mon :+4.9 4.Remote Addr :32 Corrected BER:0 E-12 +12 V Mon :+12.2 Offset Frq (Hz):-11 -12 V Mon :-12.0...
  • Page 70 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces 1.Main Menu IF Input (dBm) :-31 [3.7 V] SW:F04780--Ver:1.3 2.Control Mode:Ft Panel Eb/No :>20.00 Intf Pres :G.703 T1/E1 S 3.Remote Mode :RS-485 Uncorrected SER:0 V Mon :+4.9 4.Remote Addr :101 Corrected BER:0 E-12 +12 V Mon :+12.5 Offset Frq (Hz:+0 -12 V Mon :-11.9...
  • Page 71 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 1.Main Menu IF Input (dBm) :-61 [1.0 V] SW:F04780-- Ver:.2 2.Control Mode:Terminal Eb/No :NO SYNC Intf Pres :Universal 3.Remote Mode :RS-485 Uncorrected SER:NO SYNC V Mon :+4.8 4.Remote Addr :32 Corrected BER:NO SYNC +12 V Mon :+12.5 Offset Frq (Hz):+24992 -12 V Mon :-12.1...
  • Page 72 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces 1.Main Menu IF Input (dBm) :-61 [.9 SW:F04780-- Ver:.2 2.Control Mode:Terminal Eb/No :NO SYNC Intf Pres :Universal 3.Remote Mode :RS-485 Uncorrected SER:2.55E-1 V Mon :+4.8 4.Remote Addr :32 Corrected BER:7.00E-4 +12 V Mon :+12.5 Offset Frq (Hz):-46 -12 V Mon :-12.1...
  • Page 73 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 1.Main Menu IF Input (dBm) :-61 [1.0 V] SW:F04780-- Ver:.2 2.Control Mode:Terminal Eb/No :NO SYNC Intf Pres :IDR V.35/422 3.Remote Mode :RS-485 Uncorrected SER:NO SYNC V Mon :+4.8 4.Remote Addr :32 Corrected BER:NO SYNC +12 V Mon :+12.4...

  • Page 74: Remote Port User Interface

    Figure 4-22. Closed Net/RS-422/V.35/RS-232 Interface Control Terminal Screen 4.4 Remote Port User Interface The Remote Port of the DMD2401 allows for complete control and monitor functions via an RS-485 or RS-232 Front Panel Configurable Serial Interface. Control and status messages are conveyed between the DMD2401 and the subsidiary modems and the host computer using packetized message blocks in accordance with a proprietary communications specification.
  • Page 75 9600, 8, N, 1 The COMMSPEC developed for use with the Radyne Link Level Protocol (RLLP) organizes the actual monitor and control data within a shell, or ‘protocol wrapper’, that surrounds the data. The format and structure of the COMMSPEC message exchanges are described herein. Decimal numbers have no suffix;...

  • Page 76: Frame Description And Bus Handshaking

    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 anticipated checksum does not match then a checksum error response is returned to the message frame originator.

  • Page 77: Global Response Operational Codes

    (such as increasing or decreasing the transmit power level of a DMD2401 modulator), the FSN is incremented after each message packet. When the FSN value reaches 255, it overflows and begins again at zero. The FSN tag is a powerful tool that assures sequential information framing, and is especially useful where commands require more than one message packet.
  • Page 78 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces The following response error codes are specific to the DMD2401: Response Opcode Description Opcode 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_CONVENCODER_ERROR 0x0409 MPARM_REEDSOLOMON_ERROR 0x040A MPARM_SCRAMBLERCONTROL_ERROR 0x040B MPARM_SCRAMBLERTYPE_ERROR 0x040C...

  • Page 79: Collision Avoidance

    User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem DPARM_FREQUENCY_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 0x060A DPARM_DIFFERENTIALDECODER_ERROR 0x060B DPARM_DESCRAMBLERCONTROL_ERROR 0x060C DPARM_DESCRAMBLERTYPE_ERROR 0x060D DPARM_SPECTRUM_ERROR 0x060E DPARM_BUFFERCLOCK_ERROR 0x0610 DPARM_BUFFERCLOCKPOL_ERROR 0x0611 DPARM_INSERTMODE_ERROR 0x0612 DPARM_FRAMING_ERROR 0x0615 DPARM_OPERATINGMODE_ERROR 0x0616 DPARM_BERMEASUREPERIOD_ERROR 0x0619...
  • Page 80 (“single-thread”) configuration accessible to the M&C computer directly. For example, if two DMD2401 Modems with different addresses (DESTINATION IDs) are linked to the same control bus at the same hierarchical level, both will attempt to respond to the M&C computer when the computer generates a multi-drop override ID...

  • Page 81: Software Compatibility

    If the remote M&C is not aware of the newly added features to the Radyne product, it should disregard the parameters at the end of the non-volatile section and index to the start of the volatile section.

  • Page 82: Rllp Summary

    RLLT exits the I/0 wait state and takes appropriate action. Radyne equipment is logically linked to the control bus via an Internal I/O Processing Task (IOPT) to handle frame sequencing, error checking, and handshaking. The IOPT is essentially a link between the equipment RLLT and the control bus.

  • Page 83: Dmd2401 Opcode Command Set

    The modulo 256 sum of all preceding message bytes excluding the <SYNC> character. (1 byte) 4.4.9 DMD2401 Opcode Command Set The DMD2401 Opcode Command Set is listed below, separated by commands that control the modulator only, the demodulator only, or the entire module. 4-44...

  • Page 84: Modulator Command Set

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces 4.4.10 Modulator Command Set Command Opcode Query Mod All 2400h Query Mod Latched Alarms 2405h Query Mod Current Alarms 2408h Query Mod Status 240Bh Query Mod RTS Level 2433h Command Mod All 2601h Command Mod Frequency...

  • Page 85: Demodulator Command Set

    User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Command Mod Carrier Delay 2637h 4.4.11 Demodulator Command Set Command Opcode Query Demodulator All 2401h Query Demod Latched Alarms 2406h Query Demod Current Alarms 2409h Query Demod Status 240Ch Query Demod Eb/No, Input Level, Raw BER, Corrected...

  • Page 86: Module Command Set

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces 4.4.12 Module Command Set RLLP Command Opcode Query Module Identification 2403h Query Module Current Alarms 240Ah Query Module Time 240Eh Query Module Date 240Fh Query Module Time and Date 2410h Query Module Options 2431h...
  • Page 87 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem <1> Convolutional 0 = None Encoder 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 0.7932D...
  • Page 88 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces <1> Alarm 1 Mask Bit 0 = Transmit Processor Fault Major Alarms Bit 1 = Transmit Output Power Level Fault Bit 2 = Transmit Oversample PLL Lock Fault Bit 3 = Transmit Composite Clock PLL Lock Fault...
  • Page 89 G.703 Interface 0 = G703T1AMI Type 1 = G703T1B8ZS 2 = G703BE1 3 = G703UE1 Note: The following byte applies to all DMD2401 modems, regardless of interface type. <1> BPSK Symbol 0 = Normal, 1 = Swapped Pairing Note: The following nine bytes apply only if an Asynchronous Interface Card or IBS Interface Card is installed, and the AUPC option is also installed.
  • Page 90 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces interface card is installed. If not, ignore. <1> Daughter Card 0 = Mask, 1 = Allow Fault Mask <1> Transmit Mode 0 = Closed Net Mode 1 = IDR Mode 2 = IBS Mode 3 = Drop &...
  • Page 91 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem <2> Transmit ESC -20 to +10, Signed Binary Value (in dB) Audio #2 Volume <1> Drop Mode 0 = Disable 1 = T1-D4 2 = T1-ESF 3 = PCM-30 4 = PCM-30C 5 = PCM-31...
  • Page 92 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces Bit 1 = +12 V Alarm Bit 2 = +5 V Alarm Bit 3 = Temperature Fault Bit 4 = Interface FPGA Bit 5 = Battery Fault Bit 6 = RAM/ROM Fault Bit 7 = Spare (0 = Pass, 1 = Fail) <1>...
  • Page 93 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem <1> Remote AUPC Bit 0 = AUPC Communication Error Status Bits 1-2 = Eb/No Status 0 = Eb/No is Invalid 1 = Eb/No is Valid 2 = Eb/No is Smaller Than Indicated Value 3 = Eb/No is Larger Than Indicated Value <2>...
  • Page 94 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces Bit 6 = Transmit Forced Alarm Bit 7 = External Reference PLL Lock Fault (0 = Pass, 1 = Fail) <1> Alarm 2 Minor Bit 0 = Terrestrial Clock Activity Detect Fault Alarm Bit 1 = Internal Clock Activity Detect Fault...
  • Page 95 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem <1> +12 V Voltage +12 V, Implied Decimal Point (ex: 121 = +12.1 V) <1> -12 V Voltage -12 V, Implied Decimal Point and Minus Sign (ex: 118 = 11.8 V) Degrees C, Implied Decimal Point (ex: 490 = 49.0 ° C) <2>...
  • Page 96 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces 30C only) Bit 6 = Loss of T4errestrial Signaling (reported by DSP) Bit 7 = Spare <1> Drop Backward Bit 0 = Backward Alarm Received from Drop Terrestrial Alarm Status Bits 2 – 7 = Spares Opcode: <2405h>...
  • Page 97 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Bit 5 = Transmit Ext BNC Clock Activity Detect Fault Bit 6 = Transmit Reed-Solomon Fault Bit 7 = Tx BUC Fault, LBST Only (0 = Pass, 1 = Fail) <1> Common Alarm Bit 0 = -12 V Alarm...
  • Page 98 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces <1> Scrambler 0 = Off, 1 = On Control <1> Scrambler Type 0 = None 1 = IBS Scrm. 2 = V35_IESS 3 = V35_CCITT 4 = V35_EFDATA 7 = Reed-Solomon Scrm. 8 = V35_EFRS <2>...
  • Page 99 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Bit 6 = RAM/ROM Fault Bit 7 = Spare (0 = Mask, 1 = Allow) <24> Tx Circuit ID ASCII Characters <1> Tx Terrestrial 0 = Disabled, 1 = Enabled Loopback <1> Tx Baseband...
  • Page 100 G.703 Interface 0 = G703T1AMI Type 1 = G703T1B8ZS 2 = G703BE1 3 = G703UE1 Note: The following byte applies to all DMD2401 modems, regardless of interface type. <1> BPSK Symbol 0 = Normal, 1 = Swapped Pairing Note: The following byte applies only if an Asynchronous Interface Card, or an IDR OR IBS Interface Card is installed, AND the AUPC option is also installed.
  • Page 101 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Note: AUPC minimum power level < AUPC default power level < AUPC max. power level. Signed value, –50 dBm to –300 (–5.0 to –30 dBm), Implied <2> AUPC Default Decimal Point Power Level Note: The following byte applies only if an IDR OR IBS interface card is installed.
  • Page 102 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces Note: The following byte applies 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 installed, set to zero. If an IDR OR IBS...
  • Page 103 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem interface card is installed, and the transmit mode parameter is set to IDR Mode. If an IDR OR IBS interface card is not installed, set to zero. 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.
  • Page 104 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces Encoder Opcode: <2609h> Command a Modulator’s Carrier Control <1> Carrier Control 0 = Off, 1 = On, 2 = Auto, 3 = VSat, 4 = RTS Opcode: <260Ah> Command a Modulator’s Carrier Selection <1>...
  • Page 105 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Opcode: <2610h> Command a Modulator’s Reed-Solomon Encoder Characteristics <1> Reed-Solomon 0 = Disable, 1 = Enable <1> Reed-Solomon N Unsigned Binary <1> Reed-Solomon K Unsigned Binary <1> Reed-Solomon T Note: Always set to Zero; as the T value is calculated from N and K.

  • Page 106: Dmd2401 Demodulator

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces Opcode: <2626h> Command a Modulator’s Async Terrestrial Interface Type Note: Command <2626h> is only valid if an asynchronous interface card is installed. If not, this command is ignored. Note: The following command will also turn the carrier off to protect the satellite.
  • Page 107 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Configuration Bytes <4> Frequency Binary Value, 1Hz Steps <4> Data Rate Binary Value, 1 BPS Steps Sweep Limits (Max of ± 42 kHz) <1> Sweep Boundary <4> External Unsigned Binary Value in Hz Reference <1>...
  • Page 108 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces <4> Buffer Size Byte 1 - 2 = Buffer Size in ms Byte 3 - 4 = Buffer Size in Bytes <1> Buffer Clock 0 = External, 1 = Internal, 2 = EXC, 3 = RX SAT...
  • Page 109 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem <1> BER Measure Unsigned Binary Number of Bits in Measurement Period, in Period Powers of Ten (ex: 6 = 10 Bits) <24> Rx Circuit ID 24 ASCII Characters <1> Rx Terrestrial 0 = Disabled, 1 = Enabled Loopback <1>...
  • Page 110 G.703 Interface 0 = G703T1AMI Type 1 = G703T1B8ZS 2 = G703BE1 3 = G703UE1 Note: The following byte applies to all DMD2401 modems, regardless of interface type. 0 = Normal, 1 = Swapped <1> BPSK Symbol Pairing Note: The following byte applies only if an IDR OR IBS interface card is installed.
  • Page 111 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem IDR Mode. If not, ignore -20 to +10, Signed Binary Value in dB <2> Receive ESC Audio #1 Volume Note: The following two bytes apply only if an IDR OR IBS interface card is installed and the Receive Mode is set to IDR Mode.
  • Page 112 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces Bit 4 = Reed-Solomon Sync Fault Bit 5 = Reed-Solomon Excessive Errors Fault Bit 6 = Reed-Solomon Uncorrectable Word Fault Bit 7 = Receive Forced Alarm (0 = Pass, 1 = Fail) <1> Alarm 2...
  • Page 113 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Bit 4 = Receive FPGA Fault Bit 5 = Rx LNB Fault, LBST Only Bits 6 - 7 = Spares (0 = Pass, 1 = Fail) <1> Latched Alarm 3 Bit 0 = IF Synthesizer Lock Detect Fault...
  • Page 114 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces Exponent <1> Offset Frequency 0 = Offset Frequency Pos, 1 = Offset Frequency Neg Sign <1> BER/EbNo Status Bit 0 = Raw BER and Corrected BER Status (1 = Valid) Bit 1 = Test 2047 BER Status (1 = Valid)
  • Page 115 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem <1> Alarm 2 Bit 0 = Buffer Underflow Bit 1 = Buffer Overflow Bit 2 = Buffer Under 10% Bit 3 = Buffer Over 90% Bit 4 = Receive FPGA Configuration Fault Bit 5 = Rx LNB Fault, LBST Only...
  • Page 116 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces 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 Fault...
  • Page 117 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem <1> BER/EbNo Status Bit 0 = Raw BER and Corrected BER Status (1 = Valid) Bit 1 = Test 2047 BER Status (1 = Valid) Bits 2 - 3 = EbNo Status (0 = EbNo is Invalid, 1 = EbNo is...
  • Page 118 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces Bit 7 = CRC Calculation Fault <1> Insert Back Bit 0 = Backward Alarm Received from Satellite Alarm Bits 2 – 7 = Spares <1> AGC Voltage In Hex, decimal point implied. Opcode: <2406h>...
  • Page 119 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 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>...
  • Page 120 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces 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: <240Dh>...
  • Page 121 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Source <1> Input Level Limit Lower Level Limit, Binary Value, 1 dB Steps, Negative Sign Implied <1> Demodulation 0 = QPSK, 1 = BPSK, 2 = 8PSK, 4 = OQPSK Type <1> Convolutional 0 = None...
  • Page 122 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces Bit 1 = Signal Lock Fault Bit 2 = Receive Satellite AIS Fault Bit 3 = Rx AGC Level Fault Bit 4 = Reed-Solomon Sync Fault Bit 5 = Reed-Solomon Excessive Errors Fault Bit 5 = Reed-Solomon Uncorrectable Word Fault...
  • Page 123 G.703 Interface 0 = G703T1AMI Type 1 = G703T1B8ZS 2 = G703BE1 3 = G703UE1 Note: The following byte applies to all DMD2401 modems, regardless of interface type <1> BPSK Symbol 0 = Normal, 1 = Swapped Pairing Note: The following byte applies only if an IDR OR IBS 4-84 TM065 –...
  • Page 124 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces interface card is installed. If not, set to zero. <1> Receive Mode 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 is installed and the Receive Mode is set to IDR Mode.
  • Page 125 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem <1> Alarm 5 Mask Bit 0 = IBS Satellite Multiframe Fault Bit 1 = IBS Satellite Frame Fault Bit 2 = Spare Bit 3 = IBS Alarm if BER < 10 Bit 4 = IBS Prompt Alarm...
  • Page 126 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces Opcode: <2A08h> Command a Demodulator’s Convolutional Decoder <1> Convolutional 0 = None 1 = Viterbi 1/2 Rate Decoder 3 = Viterbi 3/4 Rate 5 = Viterbi 7/8 Rate 7 = Sequential 1/2 Rate 9 = Sequential 3/4 Rate...
  • Page 127 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 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 = Stop, 1 = 2047 Test 4-88 TM065 –...

  • Page 128: Module Queries & Commands

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces Opcode: <2A1Ah> Command a Demodulator’s BER Exponent <1> BER Measure Number of Bits in Measurement Period in Powers of Ten Period (ex: 6 = 10 Bits) Opcode: <2A1Ch> Command a Demodulator’s Terrestrial Loopback <1>...
  • Page 129 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Opcode: <240Fh> Query Date Query response <1> Year 0 – 99 <1> Month 0 – 11 <1> 0 – 30 Opcode: <2410h> Query Time and Date Query response <1> Year 0 – 99 <1>...
  • Page 130 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces Alarm 1 Bit 1 = Signal Lock Fault Bit 2 = Receive Satellite AIS Fault Bit 3 = Rx AGC/Input Level Fault Bit 4 = Reed-Solomon Sync Fault Bit 5 = Reed-Solomon Excessive Errors Fault...
  • Page 131 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Opcode: <2431h> Query a Module’s Installed Options Query response <1> Frequency Band Bits 0 - 3 = Tx Band Bits 4 - 7 = Rx Band (0 = 70 MHz, 1 = 140 MHz, 2 = L-band, 3 = Extended L-Band, 4 = 70 MHz High Output, 5 = 70 &...
  • Page 132 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces Opcode: <261Bh> Command a Module’s External Reference Frequency <4> External Ref. Unsigned Binary Value in Hz Freq. TM065 - Rev. 3.3 4-93...
  • Page 133 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Opcode: <2C00h> Command Drop and Insert Map Copy <1> From Map 0 = Drop Active Map 1 = Insert Active Map 2 = Drop Edit Map 3 = Insert Edit Map 4 –11 = User Map #1 through #8 12 –...

  • Page 134: Default Values Modulator

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces 4.4.13.4 Default Values Modulator Opcode: <2601h> Command a Modulator’s Configuration <4> Frequency 70,000,000 Hz <04> <2C> <1D> <80> <3> Reserved <00> <00> <00> <4> Data Rate 2,048,000 BPS <00> <1F> <40> <00> <4> EXC Clock 2,048,000 Hz <00>...
  • Page 135 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Loopback <1> Tx Baseband 0 = Disabled <00> Loopback <1> Reserved <00> <1> Reserved <00> <1> Data Invert 0 = Normal <00> <1> Async Mode 0 = Async Off <00> <1> Async Baud Rate 3 = 9600 <03>...

  • Page 136: Default Values Demodulator

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces 4.4.13.5 Default Values Demodulator Opcode: <2A00h> Command a Demodulator’s Configuration <4> Frequency 70,000,000 Hz <04> <2C> <1D> <80> <4> Data Rate 2,048,000 BPS <00> <1F> <40> <00> <1> Sweep Boundary 25 kHz <19> <4>...
  • Page 137 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem <1> BER Measure Bits <05> Period <24> Rx Circuit ID 24 ASCII Spaces <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20> <20>...

  • Page 138: Terminal Port User Interface

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem User Interfaces 4.5 Terminal Port User Interface The Terminal Port of the DMD2401 allows for complete control and monitoring of all DMD2401 parameters and functions via an RS-232 Serial Interface. TM065 - Rev. 3.3 4-99...
  • Page 139 User Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem This Page is Intentionally Left Blank 4-100 TM065 – Rev. 3.3...

  • Page 140: Section 5 - Electrical Interfaces

    Section 5 – Electrical Interfaces 5.0 DMD2401 Connections All DMD2401 connections are made to labeled connectors located on the rear of the unit: The connector definitions below are those on the DMD2401 unit. Any connection interfacing to the DMD2401 must be the appropriate mating connector.

  • Page 141: Dmd2401 With Rs-422/-449 Data Interface

    The External Reference Input Port (J2) is used for injecting an external reference frequency into the modem. The DMD2401 Master Oscillator is locked to this source. All internally generated frequencies within the modem will attain the stability of the applied external reference. The...

  • Page 142: Alarm (J6)

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Electrical Interfaces Table 5-2. RS-232 Terminal Port – 9-Pin Female “D” Connector (J5) Pin Number Signal Description Direction Transmit Data Input Receive Data Output Ground – 5.3.6 ALARM (J6) The modem has two Form-C Dry Contact Alarm Relays onboard and an Alarm Connector located on the rear panel, the 9-pin male “D”...
  • Page 143 Electrical Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 5.3.7 REMOTE (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 below for the connector pinouts.
  • Page 144 Signal Ground – Note: The DMD2401 Satellite Modem constantly asserts the DM/DSR Signal (DM and DSR are actually the same signal). The modem is always in the condition of being able to accept data. DTR Input to 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.
  • Page 145 Electrical Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 5.2.9.2 V.35 Adapter to J9 Table 5-8 provides the pinouts if the user wishes to fabricate an adapter from a 37-Pin, V.35 to J9. Table 5-8. 25-Pin V.35 Adapter to J9 V.35 37-Pin Signal...
  • Page 146 The External Reference Input Port (J2) is used for injecting an external reference frequency into the modem. The DMD2401 Master Oscillator is locked to this source. All internally generated frequencies within the modem will attain the stability of the applied external reference. The...
  • Page 147 Electrical Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 5.4.6 ALARM (J6) The modem has two Form-C Dry Contact Alarm Relays onboard and an Alarm Connector located on the rear panel, the 9-pin male “D” sub connector (J6). The two relays are designated Modulator Alarm and Demodulator Alarm. Non-Alarm is defined as the powered state of the relay.
  • Page 148 The External Reference Input Port (J2) is used for injecting an external reference frequency into the modem. The DMD2401 Master Oscillator is locked to this source. All internally generated frequencies within the modem will attain the stability of the applied external reference. The...
  • Page 149 Electrical Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 5.5.6 ALARM (J6) The modem has two Form-C Dry Contact Alarm Relays onboard and an Alarm Connector located on the rear panel, the 9-pin male “D” sub connector (J6). The two relays are designated Modulator Alarm and Demodulator Alarm. Non-Alarm is defined as the powered state of the relay.
  • Page 150 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Electrical Interfaces ESCAUDTX 2A IDR ESC Audio Input Channel 2A Input ESCAUD RX 1A IDR ESC Audio Output Channel 1A Output ESCAUD RX 2A IDR ESC Audio Output Channel 2A Output ESCBWI 3 IDR ESC Backward Alarm Input - 3...
  • Page 151 Electrical Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Receive Data B ESCBWO 4C IDR ESC Backward Alarm Out - 4 Common Output BAL EXC-B External Clock Input B Input Ground ESCAUDTX 1B IDR ESC Audio Input Channel 1B Input ESCAUDTX 2B IDR ESC Audio Input Channel 2B...
  • Page 152 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Electrical Interfaces 5.5.9 SYNC DATA (J10) The Synchronized Data Port (J10) is used for Synchronous Data Interface and uses RS-422, RS-232, and V.35 Interfaces. It is a 37-Pin Female Connector. Refer to Table 5-11 for the connector pinouts.
  • Page 153 Electrical Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 5.5.10 IBS ALARMS (J14) The IBS Alarms Interface Port (J14) is a 25-Pin Female “D” Connector. Refer to Table 5-12 for connector pinouts. Table 5-12. IBS Alarms Interface - 25-Pin Female “D” (J14) Pin Number...
  • Page 154 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Electrical Interfaces 5.5.11 ASYNC (J15) The Asynchronous Interface Port (J15) is a 9-Pin Female “D” Connector. Refer to Table 5-13 for connector pinouts. Refer to Section 5.8 for configuration switch settings. Table 5-13. Asynchronous Interface - 9-Pin Female “D” Connector (J15)
  • Page 155 The External Reference Input Port (J2) is used for injecting an external reference frequency into the modem. The DMD2401 Master Oscillator is locked to this source. All internally generated frequencies within the modem will attain the stability of the applied external reference. The...
  • Page 156 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Electrical Interfaces 5.6.6 ALARM (J6) The modem has two Form-C Dry Contact Alarm Relays onboard and an Alarm Connector located on the rear panel, the 9-pin male “D” sub connector (J6). The two relays are designated Modulator Alarm and Demodulator Alarm. Non-Alarm is defined as the powered state of the relay.
  • Page 157 Electrical Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Table 5-14. ESC Alarm Interface - 25-Pin Female “D” (J14) Pin Number Signal Description Direction Ground – ESCBWO 1NO Backward Alarm Out-1NO Output No Connection – ESCBWO 2NO Backward Alarm Out-2 NO Output No Connection –...
  • Page 158 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Electrical Interfaces 5.6.14 ESC 8K DATA (J15) The ESC 8K Data Port (J15) is the ESC 8K Data Connector. It is a 15-Pin Female “D” Connector. Refer to Table 5-15 for connector pinouts. Table 5-15. ESC 8K Data Interface - 15-Pin Female “D” Connector (J15)
  • Page 159 Electrical Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 5.6.15 G.703 BAL (J16) The G.703 Balanced Port (J10) are the G.703 balanced data connectors. It is a 15-Pin Female “D” Connector. Refer to Table 5-16 for connector pinouts. Table 5-16. G.703 BAL - 15-Pin Connector (J10)
  • Page 160 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Electrical Interfaces Table 5-17. ESC AUDIO - 9-Pin Female “D” Connector (J17) Pin Number Signal Description Direction ESCAUDTX 1A Tx Audio 1A Input ESCAUDRX 1A Rx Audio 1A Output Ground – ESCAUDTX 2B Tx Audio 2B...
  • Page 161 Electrical Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Table 5-19. Asynchronous Interface - 9-Pin Female “D” Connector (J17) Pin Number Signal Description Direction TX-485-B Transmit Data RS485 (+) Input TXD-232 Transmit Data RS232 Input RXD-232 Receive Data RS232 Output Ground – Not Connected –...
  • Page 162 The External Reference Input Port (J2) is used for injecting an external reference frequency into the modem. The DMD2401 Master Oscillator is locked to this source. All internally generated frequencies within the modem will attain the stability of the applied external reference. The...
  • Page 163 Electrical Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 5.7.5 TERMINAL (J5) The Terminal Port (J5) pinouts are listed below in Table 5-20. Table 5-20. RS-232 Terminal Port – 9-Pin Female “D” Connector (J5) Pin Number Signal Description Direction Transmit Data Input Receive Data...
  • Page 164 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Electrical Interfaces 5.7.7 REMOTE (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 5-23 below for the connector pinouts.
  • Page 165 The External Reference Input Port (J2) is used for injecting an external reference frequency into the modem. The DMD2401 Master Oscillator is locked to this source. All internally generated frequencies within the modem will attain the stability of the applied external reference. The...
  • Page 166 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Electrical Interfaces 5.8.6 ALARM (J6) The modem has two Form-C Dry Contact Alarm Relays onboard and an Alarm Connector located on the rear panel, the 9-pin male “D” sub connector (J6). The two relays are designated Modulator Alarm and Demodulator Alarm. Non-Alarm is defined as the powered state of the relay.
  • Page 167 Signal Ground – Note: The DMD2401 Satellite Modem constantly asserts the DM/DSR Signal (DM and DSR are actually the same signal). The modem is always in the condition of being able to accept data. DTR Input to 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.
  • Page 168 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Electrical Interfaces Table 5-26. V.35 Data - Cable Number CA/4841 Pinouts Signal Description Direction Signal Ground Request to Send A Input Clear to Send A Output Data Mode A (-) Output Receive Ready A Output SD-A...
  • Page 169 Electrical Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 5.8.12 RD (J12) The Receive Data Port (J12) is the unbalanced Receive Data BNC connector. 5.8.13 ESC ALARMS (J14) The ESC Alarm Interface Port (J14) is the ESC Alarm Connector. It is a 25-Pin Female “D”...
  • Page 170 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Electrical Interfaces 5.8.14 ESC 8K DATA (J15) The ESC 8K Data Port (J15) is the ESC 8K Data Connector. It is a 15-Pin Female “D” Connector. Refer to Table 5-28 for connector pinouts. Table 5-28. ESC 8K Data Interface - 15-Pin Female “D” Connector (J15)
  • Page 171 Electrical Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 5.8.15 G.703 BAL (J16) The G.703 Balanced Port (J10) are the G.703 balanced data connectors. It is a 15-Pin Female “D” Connector. Refer to Table 5-29 for connector pinouts. Table 5-29. G.703 BAL - 15-Pin Connector (J10)
  • Page 172 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Electrical Interfaces Table 5-30. ESC AUDIO - 9-Pin Female “D” Connector (J17) Pin Number Signal Description Direction ESCAUDTX 1A Tx Audio 1A Input ESCAUDRX 1A Rx Audio 1A Output Ground – ESCAUDTX 2B Tx Audio 2B...

  • Page 173: Async Port Configuration Switches

    Electrical Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Table 5-32. Asynchronous Interface - 9-Pin Female “D” Connector (J17) Pin Number Signal Description Direction TX-485-B Transmit Data RS485 (+) Input TXD-232 Transmit Data RS232 Input RXD-232 Receive Data RS232 Output Ground – Not Connected –...

  • Page 174: As/3771 Daughter Card

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Electrical Interfaces Table 5-37. Async Port DIP Switch Settings – RS-232 Null Only with CTS & RTS 5.9.1 AS/3771 Daughter Card Table 5-38 is used to configure AS/3771 Daughter Card. This card comes without switches. To configure it, find the resistor location that corresponds to the equivalent switch on the other interfaces and install the appropriate resistor.

  • Page 175: As/4803 Daughter Card

    Electrical Interfaces DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 5.9.2 AS/4803 Daughter Card Table 5-39 is used to configure AS/4803 Daughter Card. This card comes without switches. To configure it, find the resistor location that corresponds to the equivalent switch on the other interfaces and install the appropriate resistor.

  • Page 176: Periodic Maintenance

    The DMD2401 modulator requires no periodic field maintenance procedures. Should a unit be suspected of a defect in field operations after all interface signals are verified, the correct procedure is to replace the unit with another known working DMD2401. If this does not cure the problem, wiring or power should be suspect.

  • Page 177: Alarm Masks

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 6.2.1 Alarm Masks The user has the capability to ‘Mask’ individual alarms on the DMD2401. When an Alarm is masked, the front panel LEDs and the Fault Relays do not get asserted, but the Alarm will still be displayed.
  • Page 178 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Maintenance 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 exists, otherwise it switches to SCT.

  • Page 179: Interpreting The Matrices

    LED. 6.4 DMD2401 Bit Error Rate (BER Curves) Figures 6-1 through 6-5 represent the BER curves for the DMD2401 Satellite Modem. Figure 6-1. IBS BER Curve TM065 – Rev. 3.3...
  • Page 180 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Maintenance Figure 6-2. IDR BER Curve Figure 6-3. Reed-Solomon (IDR) BER Curve TM065 - Rev. 3.3...
  • Page 181 Maintenance DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Figure 6-4. Sequential 384 Kbps BER Curve Figure 6-5. Trellis 8PSK BER Curve TM065 – Rev. 3.3...

  • Page 182: Dmd2401 Agc Curve

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Maintenance 6.5 DMD2401 AGC Curve Figure 6-6 represents the AGC Curve for the DMD2401. 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 Stream, and the Satellite.
  • Page 183 Maintenance DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Table 6-4. IBS Fault Conditions and Actions (includes Drop and Insert) Fault Detected on Action In Earth Action to Terrestrial Action to Satellite Terrestrial Link Station (Across Interface H) (Across Interface D) (Across Interface A) AS1, 2 - IBS Prompt, AH2 - ‘1’...

  • Page 184: Section 7 – Technical Specifications

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Technical Specifications Section 7 – Technical Specifications 7.0 Introduction This section defines the technical performance parameters and specifications for the DMD2401 and DMD2401L Satellite Modems. 7.1 Transmit and Receive Data Rates BPSK, 1/2 Rate 4800 bps – 1250 Kbps BPSK, 3/4 Rate 7200 bps –...
  • Page 185 Technical Specifications DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Typical Eb/No (Viterbi) Rate 1/2 Rate 3/4 Rate 7/8 at BER = 10 at BER = 10 Typical Eb/No (Trellis 8PSK) Rate 1/2 at BER = 10 at BER = 10 Typical Eb/No, @ 64 Kbps...

  • Page 186: Monitor And Control

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Technical Specifications 7.5 Monitor and Control All operating parameters can be monitored and controlled via the front panel display/keypad or the RS-485 or RS-232 serial control channel in either terminal or command modes. The following modem parameters may be controlled and/or monitored: Mod 10 mod Mode (Closed Net, IDR, IBS, D&I)
  • Page 187 Technical Specifications DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem This Page is Intentionally Left Blank TM065 – Rev. 3.3...

  • Page 188: Section 8 – Appendices

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Appendices Section 8 – Appendices Appendix A – Reed-Solomon Codes Valid Values for k 2, 3 3, 4 3, 4, 5 4, 5, 6 4, 6, 7 5, 6, 7, 8 5, 7, 8, 9 6, 8, 9, 10...
  • Page 189 Appendices DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 14, 19, 21, 23, 24, 25, 26, 27 15, 20, 22, 24, 25, 26, 27, 28 15, 20, 23, 24, 25, 26, 27, 28, 29 16, 21, 24, 25, 26, 27, 28, 29, 30 16, 22, 24, 26, 27, 28, 29, 30, 31...
  • Page 190 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Appendices 38, 43, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56 39, 44, 47, 49, 50, 51, 52, 53, 54, 55, 56, 57 40, 45, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58...
  • Page 191 Appendices DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 69, 72, 74, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85 70, 73, 75, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86 71, 74, 76, 77, 79, 80, 81, 82, 83, 84, 85, 86, 87...
  • Page 192 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Appendices 96, 99, 101, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114 97, 100, 102, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115 98, 101, 103, 104, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116...
  • Page 193 Appendices DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 124, 126, 128, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143 125, 127, 129, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144 126, 128, 130, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145...
  • Page 194 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Appendices 154, 156, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172 155, 157, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173 156, 158, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174...
  • Page 195 Appendices DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 182, 184, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201 183, 185, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202...
  • Page 196 DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Appendices 209, 210, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 210, 211, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228,...
  • Page 197 Appendices DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem 231, 232, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 233, 234, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251...

  • Page 198: Appendix B - Carrier Control

    DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem Appendices Appendix B - Carrier Control B.0 States Carrier Off: Modulator Output Disabled Carrier On: Modulator Output Enabled (refer to Section B.1, Item 1) Carrier Auto: Modulator Output Enabled (refer to Section B.1, Item 2) Carrier VSat: Modulator Output Enabled (refer to Section B.1, Item 3)
  • Page 199 Appendices DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem This Page is Intentionally Left Blank 8-12 TM065 – Rev. 3.3...

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