1. Manuals
  2. Brands
  3. Radyne Manuals
  4. Modem
  5. DMD2401 LB
  6. Installation and operation manual

Radyne DMD2401 LB Installation And Operation Manual

L-band satellite modem and odu driver
Hide thumbs
Table of Contents

Advertisement

Quick Links

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

Installation and Operation Manual

TM075 - Rev. 1.3
March, 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

Advertisement

Table of Contents
loading

Related Manuals for Radyne DMD2401 LB

Summary of Contents for Radyne DMD2401 LB

  • Page 1: Installation And Operation Manual

    Radyne ComStream Corporation. Radyne ComStream Corporation • • 3138 E. Elwood St. • • Phoenix, AZ 85034 • • (602) 437-9620 • • Fax: (602) 437-4811...
  • Page 4 In no event shall Radyne ComStream Corporation be liable for Incidental, consequential, special or resulting loss or damage of any kind howsoever caused. Radyne ComStream Corporation’s liability for damages shall not exceed the payment, if any, received by Radyne ComStream Corporation for the unit or TM075 - Rev. 1.3...
  • Page 5 Statements made by any person, including representatives of Radyne ComStream Corporation, which are inconsistent or in conflict with the terms of this warranty, shall not be binding upon Radyne ComStream Corporation unless reduced to writing and approved by an officer of Radyne ComStream Corporation.
  • 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 LB/ST L-Band Satellite Modem and ODU Driver This Page is Intentionally Left Blank TM075 – Rev. 1.3...

  • 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 LB/ST Initial Configuration Check ____________________________3-3 3.4 DMD2401 LB/ST Automatic Uplink Power Control (AUPC Operation)_________3-3 3.5 DMD2401 LB/ST Asynchronous Overhead Operation_____________________3-4 3.5.1 Asynchronous Framing/Multiplexer Capability _________________________3-4 3.6 Standard IBS Mode _______________________________________________3-6...
  • Page 9 Table of Contents DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 3.8 ESC Backward Alarms_____________________________________________3-7 3.8.1 To Disable the ESC Backward Alarms _______________________________3-7 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) ______________________________3-8 3.10 Configuring the DMD2401 for Drop and Insert _________________________3-8...
  • Page 10 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Table of Contents 4.4 Remote Port User Interface ________________________________________4-28 4.4.1 Protocol Structure ______________________________________________4-28 4.4.2 Protocol Wrapper ______________________________________________4-29 4.4.3 Frame Description and Bus Handshaking ___________________________4-30 4.4.4 Global Response Operational Codes _______________________________4-31 4.4.5 Collision Avoidance ____________________________________________4-34 4.4.6 Software Compatibility __________________________________________4-35...
  • Page 11 5.4.11 RD (J10) ____________________________________________________5-12 5.4.12 TX DC VOLTAGE INDICATOR___________________________________5-12 5.4.13 RX DC VOLTAGE INDICATOR __________________________________5-13 5.5 DMD2401 LB/ST with G.703 Data Interface with Drop and Insert ___________5-13 5.5.1 RX DC POWER (J1)____________________________________________5-13 5.4.2 TX DC POWER (J2) ____________________________________________5-13 5.4.3 TERMINAL (J3)________________________________________________5-13...
  • Page 12 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Table of Contents 5.4.4 REMOTE (J4) _________________________________________________5-13 5.4.5 ALARM (J5) __________________________________________________5-14 5.4.6 TX IF MON (J6)________________________________________________5-14 5.4.7 REF MONITOR 10 MHz (J7)______________________________________5-14 5.4.8 CLOCK (J8) __________________________________________________5-14 5.4.9 ESC ALARMS (J11) ____________________________________________5-14 5.4.10 ESC 8K DATA (J12) ___________________________________________5-15 5.4.11 G.703 BAL (J13)______________________________________________5-16...
  • Page 13 Table of Contents DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Section 7 – Technical Specifications 7.0 Introduction _____________________________________________________7-1 7.1 Transmit and Receive Data Rates ____________________________________7-1 7.2 Modulator Specifications ___________________________________________7-1 7.3 Demodulator/Receive Specifications __________________________________7-2 7.4 Alarms _________________________________________________________7-2 7.5 Front Panel LED Indicators _________________________________________7-2 7.6 Monitor and Control _______________________________________________7-3...

  • Page 14: Description

    The DMD2401 LB/ST operates at data rates up to 4.375 Mbps. Selection of any data rate is provided over the range of 9.6 Kbps to 4.375 Mbps in 1 bps steps.

  • Page 15: Dmd2401 Available Options

    DMD2401 IBS/IDR. These include RS-232, V.35, RS-422/-449 and ITU G.703. 1.1 DMD2401 Available Options A wide range of options are available for the DMD2401 LB/ST which include a low data rate asynchronous serial overhead channel for remote monitor and control. A brief description of each follows: 1.1.1 Reed-Solomon Codec...

  • Page 16: Customized Options

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Introduction 1.1.4 Customized Options The DMD2401 may be customized for specific customer requirements. Most modifications/customization can be accomplished by means of firmware/software modifications. The following are examples of the types of customization available to the user: Customized Data Rates.
  • Page 17 Introduction DMD2401 LB/ST L-Band Satellite Modem and ODU Driver This Page is Intentionally Left Blank TM075 – Rev. 1.3...

  • Page 18: Section 2 - Installation

    Section 2 – Installation 2.0 Installation Requirements The DMD2401 LB/ST Modem is designed to be installed within any standard 19-inch wide equipment cabinet or rack, and requires two rack units of mounting space (3.5 inches) vertically and 21 inches of depth. Including cabling, a minimum of 23-inches of rack depth is required.

  • Page 19: Removal And Assembly

    The modem is designed for indoor applications only. The only tools required for rack mounting the DMD2401 LB/ST is a set of four rack mounting screws and an appropriate screwdriver. Rack mounting brackets are an integral part of the cast front bezel of the unit and are not removable.
  • Page 20 Turn the unit ‘ON’ by placing the Rear Panel Switch (located above the power entry connector) to the ‘ON’ Position. Upon initial and subsequent power-ups, the DMD2401 LB/ST Microprocessor will test itself and several of its components before beginning its main Monitor/Control Program.
  • Page 21 Installation DMD2401 LB/ST L-Band Satellite Modem and ODU Driver This Page is Intentionally Left Blank TM075 – Rev. 1.3...

  • Page 22: Section 3 - Operation

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Operation Section 3 – Operation 3.0 Theory of Operation A digital terrestrial interface supplies the modulator with a data stream. The data stream is synchronized if the incoming stream is framed. The data is scrambled, and FEC is added. The data is then convolutionally encoded, punctured, then constellation mapped.

  • Page 23: Scpc Point To Multi-Point Links In A Broadcast Application

    Operation DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 3.2.2 SCPC Point to Multi–Point Links in a Broadcast Application A broadcast application might involve the necessity of sending continuous or intermittent data from one source and “broadcasting” the information to many remote locations. For instance, constant pricing information and updates may be sent by a central location to many store locations.

  • Page 24: Dmd2401 Lb/St Initial Configuration Check

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Operation The DMD2401 LB/ST is specifically designed to be usable as the remote site modem of a TDMA network when coupled with a proper “Burst” demodulator at the hub site. Since the frequencies can be assigned on demand, the network is then called “Demand Assigned, Multiple Access,”...

  • Page 25: Dmd2401 Lb/St Asynchronous Overhead Operation

    Operation DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Function Description AUPC ENABLE/DISABLE Enables/Disables the AUPC to function locally AUPC Eb/No Desired E of remote modem AUPC MIN LVL Sets minimum output power to be used AUPC MAX LVL Sets maximum output power to be used...
  • Page 26 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 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...

  • Page 27: Standard Ibs Mode

    DMD2401 LB/ST 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 28: Esc Backward Alarms

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Operation 3.8 ESC Backward Alarms When running in IDR Mode and if the modem has the ESC Option, there will be four Backward Alarms available for use by the earth stations at each end of the link (both ends must have the ESC option).

  • Page 29: Ibs/D&I Configuration (Older Modems)

    Operation DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 3.9.2 IBS/D&I Configuration (Older Modems) In this configuration, J17 on the back panel will be used as the ES-ES Communications Port. Attach the 10 Pin Ribbon Cable from J17 on the Back Panel to J11 on the AS/3771 Daughter Card.

  • Page 30: Interface Type

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Operation 3.10.1 Interface Type Interface Type affects the terrestrial framing and data rates used by the Drop & Insert function in the following ways: When a T1 interface type is selected, the terrestrial framing options will only reflect the...

  • Page 31: Terrestrial Framing - Drop Mode/Insert Mode

    Operation DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Once Drop & Insert mode has been selected, trying to change the data rate to something other than another valid D&I data rate will result in the error message ‘DATA RATE OUT OF BOUNDS.’...

  • Page 32: Insert Terrestrial Frame Source

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Operation 3.10.4.1 Insert Terrestrial Frame Source The insert terrestrial frame source selection tells the modem where the insert terrestrial frame is coming from. External means the terrestrial frame is to be input via the Insert Data In port.

  • Page 33: Drop And Insert Mapping

    Operation DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Force TerBck – Allows the operator to force the terrestrial backward alarm output to On, Off, or Normal for testing purposes. Force SatBck – Allows the operator to force the satellite backward alarm output to On, Off, or Normal for testing purposes 3.11 Drop and Insert Mapping...

  • Page 34: Loopbacks

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 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 35: Baseband Loopback

    Operation DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 3.12.2 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 36 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 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 TM075 - Rev. 1.3 3-15...
  • Page 37 Operation DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Figure 3-9. IF Loopback 3-16 TM075 – Rev. 1.3...

  • Page 38: Section 4 - User Interfaces

    Terminal 4.1 Front Panel User Interface The Front Panel of the DMD2401 LB/ST allows for complete control and monitor of all DMD2401 LB/ST 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 39: Front Panel Lcd Display

    Front Panel. 4.1.2 Front Panel LED Indicators Eight LEDs on the DMD2401 LB/ST Front Panel (Refer to Table 4-2) indicate the status of DMD2401 LB/ST 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 40: Front Panel Keypad

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

  • Page 41: Front Panel Control Menu Screens

    User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Figure 4-2. Entering New Parameters 4.2 Front Panel Control Menu Screens The DMD2401 LB/ST Front Panel Control Screens are broken down into sections under several Main Menus. 4.2.1 Main Menus Modulator...
  • Page 42 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Spectrum Inv: {Normal, Inverted} Allows the user to invert the direction of rotation for PSK Modulation. Normal meets the IESS Specification. Modulation: {BPSK, OQPSK, QPSK, 8PSK} Allows the user to select the modulation type.
  • Page 43 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Displays the currently used Reed-Solomon Interleaver Depth. In Closed Net Mode, a depth of 4 or 8 may be selected. 4.2.3 Demodulator Demod IF/RF (menu): Note: The frequencies of the Block Upconverter (BUC) and LNB must be entered first under the ‘System/General’...
  • Page 44 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces IDR OH Type: {Voice, 64Kbit} Available with 96 Kbps (IDR) Framing. TM075 - Rev. 1.3...

  • Page 45: Interface Menu Options And Parameters

    User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Symbol Pair: {Normal, Swapped} Available in BPSK Modulation. Reed-Solomon (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 46: Monitor Menu Options And Parameters

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Tx G703 Intf: {U.E1, B.E1, B.T1.B8ZS, B.T1.AMI} Allows the user to select the Transmit G.703 Interface type. Only available when G.703 Interface is installed. Tx D&I (menu): Drop Mode: {Enable, Disable} E1 Mode: PCM30, PCM30C, PCM31, PCM31C.

  • Page 47: Alarms Menu Options And Parameters

    User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Level: Estimated receive signal (in dBm) as seen by the Demodulator. AGC Voltage: (Optional Configuration) Displays the voltage level of AGC present at Pin 5 of the Alarm Connector (J6).
  • Page 48 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces TxuProc Mask: {Pass/Fail, No/Yes} Tx Processor fault. Indicates a HARDWARE Transmit or DSP Failure within the modem. Yes = Masked, No = Unmasked TxPower Mask: {Pass/Fail, No/Yes} Indicates that the Modem Tx Output Power is within allowed tolerances.
  • Page 49 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver RxLevel 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 indicates that a Receive FPGA Hardware Fault has occurred.
  • Page 50 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Buf>90% Mask: {Pass/Fail, No/Yes} Indicates that the Doppler Buffer has gone above 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.
  • Page 51 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Common (menu): -12Volt Mask: {Pass/Fail, No/Yes} Indicates the power supply voltage is out of range. +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.
  • Page 52 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces TxOSClk: {Pass/Fail} Indicates that the Tx Oversample Clock PLL is not locked. This alarm will flash ‘On’ during certain modem parameter changes. CompCLK: {Pass/Fail} Indicates that the Tx Composite Clock PLL is not locked.
  • Page 53 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Rx FPGA: {Pass/Fail} This alarm indicates that a Receive FPGA Hardware fault has occurred. Minor Tx (menu): Tx Activity (menu): TerrClk: {Pass/Fail} Indicates no Terrestrial Clock activity. Int Clk: {Pass/Fail} Indicates no SCT Clock activity.
  • Page 54 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Rx Activity (menu): Buf Clk Mask: {Pass/Fail, No/Yes} Indicates that the selected buffer clock source is not active. Ext BNC Mask: {Pass/Fail, No/Yes} Indicates no activity on the External BNC Clock Port.

  • Page 55: System Menu Options And Parameters

    User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Temp Mask: {Pass/Fail, No/Yes} Fail indicates that internal temperature of the modem is out of range. IntFPGA Mask: {Pass/Fail, No/Yes} Indicates a hardware failure on the Interface Card. Battery Mask: {Pass/Fail, No/Yes} Indicates that the Internal Clock Battery is low.
  • Page 56 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Time: {HH:MM:SS} Displays, and allows the user to enter the current time. Backlight (menu): Level: {High, Low} Allows the user to enter the backlight intensity level. Timeout: {00 - 99} Allows the user to enter the length of time in seconds of keyboard inactivity before the backlight shuts off.

  • Page 57: Test Menu Options And Parameters

    User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Remote Addr: {32 - 255} Allows the user to select the Remote Port Multidrop Address. Remote Baud: {300, 600, 1200, 2400, 4800, 9600, 19200} Allows the user to select the Remote Port Baud Rate.

  • Page 58: Terminal Mode Control

    Allows the user to test Front Panel LED function. 4.3 Terminal Mode Control The DMD2401 LB/ST 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 59 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Panel. All operating software for the terminal mode is contained within the DMD2401 LB/ST modem internal control software. A “break” signal on the communications line, pressing “ESC” on the terminal or Power On of the modem will initiate full screen terminal mode printing and redraw the full screen.
  • Page 60 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces 39.Diff Encodr:On 49.Base Loop :Off Enter Selection Number: Figure 4-3. Modulator Control Terminal Screen TM075 - Rev. 1.3 4-23...
  • Page 61 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 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...
  • Page 62 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 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...
  • Page 63 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 1.Main Menu IF Input (dBm :-38 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...
  • Page 64 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 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 :V.35/422/232 3.Remote Mode :RS-485 Uncorrected SER:0 V Mon :+4.9 4.Remote Addr :101 Corrected...

  • Page 65: Remote Port User Interface

    Figure 4-12. G.703 Symmetric Control Terminal Screen 4.4 Remote Port User Interface The Remote Port of the DMD2401 LB/ST allows for complete control and monitor functions via an RS-485 or RS-232 Front Panel Selectable Serial Interface. Control and status messages are conveyed between the DMD2401 LB/ST and the subsidiary modems and the host computer using packetized message blocks in accordance with a proprietary communications specification.

  • Page 66: Protocol Wrapper

    User Interfaces 4.4.2 Protocol Wrapper The Radyne COMMSPEC is byte-oriented, with the Least Significant Bit (LSB) issued first. Each data byte is conveyed as mark/space information with one mark comprising the stop data. When the last byte of data is transmitted, a hold comprises one steady mark (the last stop bit). To begin or resume data transfer, a space (00h) substitutes this mark.

  • Page 67: Frame Description And Bus Handshaking

    M&C computer or by a subordinate piece of equipment (such as the DMD2401 LB/ST) 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 68: Global Response Operational Codes

    (such as increasing or decreasing the transmit power level of a DMD2401 LB/ST modulator), the FSN is incremented after each message packet. When the FSN value reaches 255, it overflows and begins again at zero. 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 69 Bad Checksum Command Not Allowed in LOCAL Mode Command Not Allowed in AUTO Mode Bad Destination Unable to Process Command Packet Too Long The following response error codes are specific to the DMD2401 LB/ST: Response Opcode Description Opcode MPARM_FREQUENCY_ERROR 0x0401 MPARM_DATARATE_ERROR...
  • Page 70 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces MPARM_DROPMODE_ERROR 0x041A MPARM_SCTSOURCE_ERROR 0x041B MPARM_DROPMAP_ERROR 0x041D MPARM_MODE_ERROR 0x0422 MPARM_CIRCUITID_ERROR 0x0423 MPARM_INTERFACETYPE_ERROR 0x0429 MPARM_NOTIMPLEMENTED_ERROR 0x042D MPARM_SUMMARYFAULT_ERROR 0x0430 MPARM_DATAINVERT_ERROR 0x0431 MPARM_ASYNCTERRINTERFACETYPE_ERROR 0x0433 MPARM_CTSCONTROL_ERROR 0x0434 MPARM_CARRIERDELAY_ERROR 0x0443 DPARM_MODE_ERROR 0x0600 DPARM_FREQUENCY_ERROR 0x0601 DPARM_DATARATE_ERROR 0x0603...

  • Page 71: Collision Avoidance

    (“single-thread”) configuration accessible to the M&C computer directly. For example, if two DMD2401 LB/ST 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...

  • Page 72: Software Compatibility

    It is also advantageous to consider the use of multiple bus systems where warranted by a moderate to large equipment complement. Therefore, if a DMD2401 LB/ST is queried for its equipment type identifier, it will return a “27”. 4.4.6 Software Compatibility The DMD2401 LB/ST RLLP is not software-compatible with the following previous Radyne products: RCU5000 and DMD4500.

  • Page 73: Flow Control And Task Processing

    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 74: Rllp Summary

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces occurred, the RLLT causes the equipment to issue the appropriate error message(s) in the pending equipment response frame. To maintain frame synchronization, the IOPT keeps track of error-laden packets and packets intended for other equipment for the duration of each received packet.

  • Page 75: Dmd2401 Lb/St Opcode Command Set

    The modulo 256 sum of all preceding message bytes excluding the <SYNC> character. (1 byte) 4.4.9 DMD2401 LB/ST Opcode Command Set The DMD2401 LB/ST Opcode Command Set is listed below, separated by commands that control the modulator only, the demodulator only, or the entire module. 4.4.10 Modulator Command Set...

  • Page 76: Demodulator Command Set

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Command Mod Operating Mode 2612h Command Mod Scrambler Control 2613h Command Mod Scrambler Type 2614h Command Module Ext Ref Source 2616h Command Mod Terrestrial Loopback 2617h Command Mod Baseband Loopback...

  • Page 77: Module Command Set

    User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Command Demod Descrambler Type 2A0Eh Command Demod Spectrum 2A0Fh Command Demod Buffer Clock 2A11h Command Demod Buffer Clock Polarity 2A12h Command Demod Insert Mode 2A13h Command Demod Operating Mode 2A17h...

  • Page 78: Detailed Command Descriptions

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces 4.4.13 Detailed Command Descriptions 4.4.13.1 DMD2401 LB/ST Modulator Opcode: <2400h> Query a Modulator’s Configuration and Status Query Response <1> Number of Nonvol bytes See Paragraph B.6. This is the number of configuration bytes and is an offset to the start of the status block.
  • Page 79 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver <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> Transmit Power Signed value. -50 to -300 (-5.0 to -30.0 dBm), Implied...
  • Page 80 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces (0 = Mask, 1 = Allow) <24> Tx Circuit ID 24 ASCII Characters <1> Tx Terrestrial 0 = Disabled, 1 = Enabled Loopback <1> Tx Baseband 0 = Disabled, 1 = Enabled Loopback <1>...
  • Page 81 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 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 82 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Bit 3 = IDR Backward Alarm 4 Bits 4 - 7 = Spare (0 = Mask, 1 = Allow) <1> IDR Force 0 = Force Alarm Always ON Backward Alarm...
  • Page 83 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Bit 5 = Terrestrial MFAS Alarm Received (PCM-30 and PCM- 30C only) Bit 6 = Loss of T4errestrial Signaling (reported by DSP) Bit 7 = Spare <1> Drop Backward Alarm Mask Bit 0 = Backward Alarm Received from Drop Terrestrial Bits 2 –...
  • Page 84 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces <1> Latched Alarm 2 Minor Alarm Bit 0 = Terrestrial Clock Activity Detect Fault Minor Alarm Bit 1 = Internal Clock Activity Detect Fault Bit 2 = Tx Sat Clock Activity Detect Fault...
  • Page 85 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Note: The following byte applies only if an asynchronous interface card, IDR or IBS interface card is installed, and the AUPC option is installed and the AUPC is enabled. If Daughter Card not, ignore this byte.
  • Page 86 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces 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 Fault, LBST Only (0 = Pass, 1 = Fail) <1>...
  • Page 87 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver <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> Tx Temperature...
  • Page 88 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces only) Bit 3 = Terrestrial Yellow Alarm Received (T1 only) Bit 4 = Terrestrial FAS Alarm Received (E1 only) Bit 5 = Terrestrial MFAS Alarm Received (PCM-30 and PCM- 30C only)
  • Page 89 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Opcode: <2405h> Query a Modulator’s Latched Alarms Query Response <1> Latched Alarm 1 Bit 0 = Transmit Processor Fault Major Alarm Bit 1 = Transmit Output Power Level Fault Bit 2 = Transmit Oversample PLL Lock Fault...
  • Page 90 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces <1> Common Alarm Bit 0 = -12 V Alarm Bit 1 = +12 V Alarm Bit 2 = +5 V alarm Bit 3 = Temperature Fault Bit 4 = Interface FPGA Fault...
  • Page 91 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver <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> Transmit Power Signed value. -50 to -300 (-5.0 to -30.0 dBm), Implied...
  • Page 92 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces 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>...
  • Page 93 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Interface Type Multiprotocol interface card is installed. If not, set to zero. 0 = V.35,1 = RS-422, 2 = RS-232 <1> G.703 Interface Type Note: The following byte applies only if a symmetric G.703 interface card is installed.
  • Page 94 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Note: AUPC minimum power level < AUPC default power level < AUPC max. power level. Signed value, –50 to –300 (–5.0 to –30 dBm), Implied Decimal Point Note: The following two bytes apply only if an Asynchronous Interface Card, or an IDR OR IBS Interface <2>...
  • Page 95 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Note: The following byte applies only if an IDR OR IBS interface card is installed, and the transmit mode <1> IDR Force parameter is set to IDR Mode. If an IDR OR IBS interface Backward Alarm card is not installed, set to zero.
  • Page 96 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces parameter is not set to IDR mode, these bytes can be set to any valid values, but will be ignored. If G.703 daughter card is installed: 0 = G.703 Unbalanced E1 1 = G.703 Balanced E1...
  • Page 97 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Note: The following command will also turn the carrier off to protect the satellite. <1> Convolutional 0 = None Encoder 1 = Viterbi 1/2 Rate 3 = Viterbi 3/4 Rate...
  • Page 98 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Opcode: <2608h> Command a Modulator’s Differential Encoder <1> Differential 0 = Off, 1 = On Encoder Opcode: <2609h> Command a Modulator’s Carrier Control <1> Carrier Control 0 = Off, 1 = On, 2 = Auto, 3 = VSat, 4 = RTS, 5 = Delay Opcode: <260Ah>...
  • Page 99 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Opcode: <2613h> Command a Modulator’s Scrambler Control <1> Scrambler 0 = Off, 1 = On Control Opcode: <2614h> Command a Modulator’s Scrambler Type <1> Scrambler Type 0 = None 1 = IBS Scrambler 2 = V.35_IESS...

  • Page 100: Dmd2401 Lb/St Demodulator

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces 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)
  • Page 101 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver <1> Convolutional Decoder 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...
  • Page 102 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces <1> Alarm 2 Mask Bit 0 = Buffer Underflow Bit 1 = Buffer Overflow Bit 2 = Buffer Under 10% Bit 3 = Buffer Over 90% Bit 4 = Receive FPGA Configuration Alarm Fault...
  • Page 103 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver <1> Reserved Ignore <1> Data Invert 0 = Normal, 1 = Invert Note: The following byte applies only if an Asynchronous, IDR or IBS Interface is installed. If not, ignore.
  • Page 104 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Note: The following byte applies only if an IDR OR IBS <1> Receive Mode interface card is installed. If not, ignore. 0 = Closed Net Mode 1 = IDR Mode...
  • Page 105 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver <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...
  • Page 106 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces <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 Fault...
  • Page 107 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 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) <1>...
  • Page 108 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Exponent <1> Test 2047 BER Byte 3 = Unsigned Binary Value Exponent Exponent <1> Offset Frequency 0 = Offset Frequency Pos, 1 = Offset Frequency Neg Sign <1> BER/EbNo Status...
  • Page 109 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Bit 6 = Reed-Solomon Uncorrectable Word Fault Bit 7 = Receive Forced Alarm (0 = Pass, 1 = Fail) <1> Alarm 2 Bit 0 = Buffer Underflow Bit 1 = Buffer Overflow...
  • Page 110 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces <1> Latched Alarm 2 Bit 0 = Buffer Underflow Bit 1 = Buffer Overflow Bit 2 = Buffer Under 10% Bit 3 = Buffer Over 90% Bit 4 = Rx FPGA Configuration Fault...
  • Page 111 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver <1> Raw BER Byte 3 = Unsigned Binary Value Exponent Exponent <1> Corrected BER Byte 3 = Unsigned Binary Value Exponent Exponent <1> Test 2047 BER Byte 3 = Unsigned Binary Value Exponent Exponent <1>...
  • Page 112 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Bit 3 = IBS Alarm if BER < 10 Bit 4 = IBS Prompt Alarm Bit 5 = IBS Service Alarm Bits 6 - 7 = Spares <1> Insert Alarms...
  • Page 113 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Bit 5 = External Reference PLL Lock Fault Bit 7 = Frame Sync/Multiframe Sync Fault (0 = Pass, 1 = Fail) <1> Latched Alarm 4 Bit 0 = Buffer Clock Activity Detect Fault...
  • Page 114 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Bit 3 = Viterbi Decoder Lock Fault Bit 4 = Sequential Decoder Lock Fault Bit 5 = Rx 2047 Test Pattern Lock Fault Bit 5 = External Reference PLL Lock Fault...
  • Page 115 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver <2> Raw BER Bytes 1 - 2 = Unsigned Binary Value Raw BER Mantissa <2> Corrected BER Bytes 1 - 2 = Unsigned Binary Value Corrected BER Mantissa <2> EbNo Unsigned Binary Value, 2 Decimal Places Implied <1>...
  • Page 116 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Decoder 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...
  • Page 117 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver <1> Alarm 2 Mask Bit 0 = Buffer Underflow Bit 1 = Buffer Overflow Bit 2 = Buffer Under 10% Bit 3 = Buffer Over 90% Bit 4 = Receive FPGA Configuration Fault...
  • Page 118 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Asynchronous, IDR or IBS Interface is installed. If not, set to zero. 0 = No Framing, 1 = 1/16 IBS, 2 = 1/16 Async, 3 = 96 Kbit <1> Framing Note: The following byte applies only if an asynchronous interface card is installed.
  • Page 119 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 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 120 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Bit 2 = Spare Bit 3 = IBS Alarm if BER < 10 Bit 4 = IBS Prompt Alarm Bit 5 = IBS Service Alarm Bits 6 - 7 = Spares <1>...
  • Page 121 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 14 = Trellis 2/3 Opcode: <2A09h> Command a Demodulator’s Differential Decoder <1> Differential 0 = Off, 1 = On Decoder Opcode: <2A0Ah> Command a Demodulator’s Reed-Solomon <1> Reed-Solomon 0 = Disable, 1 = Enable <1>...
  • Page 122 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Opcode: <2A12h> Command a Demodulator’s Buffer Clock Polarity <1> Buffer Clock 0 = Normal, 1 = Inverted Polarity Opcode: <2A13h> Command a Demodulator’s Insert Mode <1> Insert Mode 0 = Disable...

  • Page 123: Module Queries & Commands

    User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Opcode: <2A31h> Command a Demodulator’s Buffer Size <4> Buffer Size Byte 1 - 2 = buffer size in ms OR Byte 3 - 4 = buffer size in bytes (Either ms or bytes must be specified - the other field should be 0XfFFF) 4.4.13.3 Module Queries &...
  • Page 124 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Opcode: <240Ah> Query Time and Date Query Response <1> Modulator Alarm Bit 0 = Transmit Processor Fault 1 Major Alarm Bit 1 = Transmit Output Power Level Fault Bit 2 = Transmit Oversample PLL Lock Fault...
  • Page 125 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver <1> Demodulator Bit 0 = IF Synthesizer Lock Detect Fault Alarm 3 Bit 1 = Rx Oversample PLL Lock Detect Fault Bit 2 = Buffer Clock PLL Lock Detect Fault...
  • Page 126 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces Bit 4 = Tx 8PSK Encoder Present Bits 5 - 7 = Spare <1> Rx FEC Present Bit 0 = Rx Viterbi Decoder Present Bit 1 = Rx Sequential Decoder Present...

  • Page 127: Default Values Modulator

    User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Opcode: <2C01Bh> Command a Module’s External Reference Frequency <1> Map to Change 0 = Drop Active Map 1 = Insert Active Map 2 = Drop Edit Map 3 = Insert Edit Map <1>...
  • Page 128 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces <1> RS Interleaver <04> Depth <1> Scrambler 1 = On <01> Control <1> Scrambler Type 2 = V35_IESS <02> <2> Transmit Power -30.0 dBm <FE> <D4> Level <1> Differential 1 = On <01>...

  • Page 129: Default Values Demodulator

    User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver <1> BPSK Symbol 0 = Normal <00> Pairing <1> IDR or IBS 1 = Not Masked <01> Daughter Card Fault Mask <1> Transmit Mode 0 = Closed Net <00> <1>...
  • Page 130 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver User Interfaces <1> Reed-Solomon N 126 <7E> <1> Reed-Solomon K 112 <70> <1> Reed-Solomon T 0 <00> <1> RS Interleaver <04> Depth <1> Differential 1 = On <01> Decoder <1> Descrambler 1 = Enable <01>...
  • Page 131 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver <1> Async Baud Rate 3 = 9600 <03> <1> Async Port Type 0 = RS-232 <00> 4-94 TM075 – Rev. 1.3...

  • Page 132: Terminal Port User Interface

    Alarm 5 Mask No Alarms Masked <FF> 4.5 Terminal Port User Interface The Terminal Port of the DMD2401 LB/ST allows for complete control and monitoring of all DMD2401 LB/ST parameters and functions via an RS-232 Serial Interface. TM075 - Rev. 1.3 4-95...
  • Page 133 User Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver This Page is Intentionally Left Blank 4-96 TM075 – Rev. 1.3...

  • Page 134: Section 5 - Electrical Interfaces

    Cord. 5.2 DC Power Input/Switch The Optional DC Power Input and Switch (Figure 5-1) is available for all DMD2401 LB/ST products. The unit may be powered from a 36 – 72 VDC source with a maximum unit power consumption of 2A. Refer to Table 5-1 for pinouts.

  • Page 135: Terminal (J3)

    Electrical Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Figure 5-1. DMD2401 LB/ST Satellite Modem w/ RS-422 Data Interface 5.2.3 TERMINAL (J3) The Terminal Port (J3) pinouts are listed below in Table 5-2. Table 5-2. RS-232 Terminal Port – 9-Pin Female “D” Connector (J3)

  • Page 136: Alarm (J5)

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Electrical Interfaces Table 5-3. RS-485 Remote Port – 9-Pin Female “D” Connector (J4) Pin Number Signal Description Direction RS-485 TxD-B Transmit Data B Output Ground – RS-485 TxD-A Transmit Data A Output...

  • Page 137: Tx If Mon (J6)

    The Transimit IF Monitor Port (J6) is used for injecting an external reference frequency into the modem. The DMD2401 LB/ST Master Oscillator is locked to this source. All internally generated frequencies within the modem will attain the stability of the applied external reference.
  • Page 138 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Electrical Interfaces Table 5-6. Sync Data - 37-Pin Female Connector (J9) Pin Number Signal Description Direction SD-A Send Data A (-) Input SD-B Send Data B (+) Input ST-A Send Timing A (-)

  • Page 139: Adapter To J9

    Electrical Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 5.2.9.1 RS-232 Adapter to J9 Table 5-7 provides the pinouts if the user wishes to fabricate an adapter from a 25-Pin, RS-232 to J9. Table 5-7. 25-Pin RS-232 Adapter to J9...

  • Page 140: Tx Dc Voltage Indicator

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Electrical Interfaces Table 5-8. 25-Pin RS-232 Adapter to J9 V.35 37-Pin Signal 37-Pin Signal Description Direction Connector Connector (J9) Signal Ground RS-A Request to Send A Input CS-A Clear to Send A...

  • Page 141: Dmd2401 Lb/St With Rs-422/V.35/Rs-232/Asynchronous Data Interface

    Electrical Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 5.3 DMD2401 LB/ST with RS-422/V.35/RS-232/Asynchronous Data Interface The DMD2401 LB/ST with RS-422/V.35/RS-232/Asynchronous Data Interface is shown in Figure 5-2. Figure 5-2. DMD2401 LB/ST with RS-422/V.35/RS-232/Asynchronous Data Interface 5.3.1 RX DC POWER (J1) The Receive DC Power Port (J1) is the 950 –...

  • Page 142: Tx If Mon (J6)

    The Transmit IF Monitor Port (J6) is used for injecting an external reference frequency into the modem. The DMD2401 LB/ST Master Oscillator is locked to this source. All internally generated frequencies within the modem will attain the stability of the applied external reference.

  • Page 143: Tx Dc Voltage Indicator

    The Receive DC Voltage Indicator shows if there is DC Voltage present at J1. 5.4 DMD2401 LB/ST with G.703 Data Interface The DMD2401 LB/ST Satellite Modem w/ G.703 Data Interface is shown in Figure 5-3. 5.4.1 RX DC POWER (J1) The Receive DC Power Port (J1) is the 950 –...

  • Page 144: Tx Dc Power (J2)

    The Transmit IF Monitor Port (J6) is used for injecting an external reference frequency into the modem. The DMD2401 LB/ST Master Oscillator is locked to this source. All internally generated frequencies within the modem will attain the stability of the applied external reference.

  • Page 145: Clock (J8)

    Electrical Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 5.4.8 CLOCK (J8) The External Clock Port (J8) is used for injecting an external data clock into the modem. The data symbol clocks may then be selected to be locked to this source. The external clock must...

  • Page 146: Rx Dc Voltage Indicator

    The Receive DC Voltage Indicator shows if there is DC Voltage present at J1. 5.5 DMD2401 LB/ST with G.703 Data Interface with Drop and Insert The DMD2401 LB/ST Satellite Modem w/ G.703 Data Interface with Drop and Insert is shown in Figure 5-4.

  • Page 147: Alarm (J5)

    The Transmit IF Monitor Port (J6) is used for injecting an external reference frequency into the modem. The DMD2401 LB/ST Master Oscillator is locked to this source. All internally generated frequencies within the modem will attain the stability of the applied external reference.

  • Page 148: Esc 8K Data (J12)

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Electrical Interfaces Table 5-11. ESC Alarm Interface - 25-Pin Female “D” (J11) Pin Number Signal Description Direction Ground – ESCBWO 1NO Backward Alarm Out-1NO Output No Connection – ESCBWO 2NO Backward Alarm Out-2 NO...

  • Page 149: Bal (J13)

    Electrical Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Table 5-12. ESC 8K Data Interface - 15-Pin Female “D” Connector (J12) Pin Number Signal Description Direction ESCRXO-B Rx Octet-B Output ESCRXC-B Rx Clock-B Output ESCRXD-B Rx Data-B Output No Connection –...

  • Page 150: Esc 64K Data/Audio (J18)

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Electrical Interfaces 5.4.16 ESC 64K DATA/AUDIO (J18) J18 serves different purposes depending upon configuration IDR Mode – 64 K Data or Voice depending upon Front Panel selection. IBS or D&I Mode – Async Port It is a 9-Pin Female “D”...

  • Page 151: Tx Dc Voltage Indicator

    Electrical Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Table 5-15. Asynchronous Interface - 9-Pin Female “D” Connector (J18) Pin Number Signal Description Direction TX-485-B Transmit Data RS485 (+) Input TXD-232 Transmit Data RS232 Input RXD-232 Receive Data RS232...

  • Page 152: As/3771 Daughter Card

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Electrical Interfaces Table 5-16. Async Port DIP Table 5-17. Async Port DIP Switch Settings – RS-485 Switch Settings – RS-232 Only or RS-485 Table 5-18. Async Port DIP Table 5-19. Async Port DIP Switch Settings –...
  • Page 153 Electrical Interfaces DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Table 5-21. AS/3771 Daughter Card Resistor Corresponds Location to Switch # OFF = TBD ON = 0Ù Resistor 5-20 TM075 – Rev. 1.3...

  • Page 154: Section 6 - Maintenance

    DMD2401 LB/ST. If this does not cure the problem, wiring or power should be suspect. There is no external fuse on the DMD2401 LB/ST. The fuse is located on the power supply assembly inside the case, and replacement is not intended in the field.

  • Page 155: Alarm Masks

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 6.2.1 Alarm Masks The user has the capability to ‘Mask’ individual alarms on the DMD2401 LB/ST. 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 156 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Maintenance Table 6-2. DMD2401 LB/ST RX Fault Matrix Note: When EXT EXC is used as a reference for the Mod Clock, and activity on the EXT EXC is lost, the modem switches Tx clock reference to SCTE if it exists, otherwise it switches to SCT.

  • Page 157: Interpreting The Matrices

    Maintenance DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 6.3.1 Interpreting the Matrices The first vertical column in the Tables represents the various Faults that the modem may identify. The top horizontal column indicates the various actions that the modem will undertake.
  • Page 158 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Maintenance or Greater on Alarm NFAS TSO, Yellow Relevant TS’s Terrestrial Input Alarm FA6 - Alarm Indication AD2 - ‘1’ in Bit 3 of Received on Byte 32 Terrestrial Input Fault Detected From...
  • Page 159 Maintenance DMD2401 LB/ST L-Band Satellite Modem and ODU Driver This Page is Intentionally Left Blank TM075 – Rev. 1.3...

  • Page 160: Section 7 - Technical Specifications

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Technical Specifications Section 7 – Technical Specifications 7.0 Introduction This section defines the technical performance parameters and specifications for the DMD2401 LB/ST Satellite Modem. 7.1 Transmit and Receive Data Rates BPSK, 1/2 Rate: 4800 bps –...

  • Page 161: Demodulator/Receive Specifications

    Technical Specifications DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 7.3 Demodulator/Receive Specifications Frequency: 950 – 1750 MHz Frequency Resolution: 100 Hz Carrier Acquisition: ± 30 kHz Input Carrier Range: -65 to -40 dBm (Symbol Rate < 64 kHz) -50 to -30 dBm (Symbol Rate > 640 kHz)

  • Page 162: Monitor And Control

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Technical Specifications 7.6 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: Modem Mode (Closed Net, IDR, IBS, D&I)

  • Page 163: Bit Error Rate (Ber) Curves

    Technical Specifications DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 7.10 Bit Error Rate (BER) Curves Figures 7-1 through 7-5 represent the BER curves for the DMD2401 LB/ST. Figure 7-1. IBS BER Curve TM075 – Rev. 1.3...
  • Page 164 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Technical Specifications Figure 7-2. IDR BER Curve Figure 7-3. Reed-Solomon (IDR) BER Curve TM075 - Rev. 1.3...
  • Page 165 Technical Specifications DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Figure 4-4. Sequential 384 Kbps BER Curve Figure 7-5. Trellis 8PSK BER Curve TM075 – Rev. 1.3...

  • Page 166: Agc Curve

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Technical Specifications 7.11 AGC Curve Figure 6-6 represents the AGC Curve for the DMD2401 LB/ST. Figure 7-6. DMD2401 LB/ST AGC Curve TM075 - Rev. 1.3...
  • Page 167 Technical Specifications DMD2401 LB/ST L-Band Satellite Modem and ODU Driver This Page is Intentionally Left Blank TM075 – Rev. 1.3...

  • Page 168: Section 8 - Appendices

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 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...
  • Page 169 Appendices DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 14, 18, 21, 22, 23, 24, 25, 26 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...
  • Page 170 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Appendices 38, 42, 45, 47, 48, 49, 50, 51, 52, 53, 54, 55 38, 43, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56 39, 44, 47, 49, 50, 51, 52, 53, 54, 55, 56, 57...
  • Page 171 Appendices DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 68, 70, 72, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83 68, 71, 73, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84 69, 72, 74, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85...
  • Page 172 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Appendices 95, 97, 99, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112 95, 98, 100, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113 96, 99, 101, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114...
  • Page 173 Appendices DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 121, 124, 126, 127, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140 122, 125, 127, 128, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141...
  • Page 174 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Appendices 152, 153, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169 152, 154, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170...
  • Page 175 Appendices DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 179, 180, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197 180, 181, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198...
  • Page 176 DMD2401 LB/ST L-Band Satellite Modem and ODU Driver Appendices 206, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225 207, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224,...
  • Page 177 Appendices DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 228, 229, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247 229, 230, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246,...

  • Page 178: Appendix B - Carrier Control

    DMD2401 LB/ST L-Band Satellite Modem and ODU Driver 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 179 Appendices DMD2401 LB/ST L-Band Satellite Modem and ODU Driver This Page is Intentionally Left Blank 8-12 TM075 - Rev. 1.3...

This manual is also suitable for:

Dmd2401 st

Table of Contents