Comtech EF Data SDM-650B Specifiche

SDM-650B Satellite Modem Installation and Operation Manual Part Number MN/SDM650B.IOM Revision 5

Preface SDM-650B Satellite Modem vi Rev. 5 This page is intentionally left blank.

Configuration SDM-650B Satellite Modem 3–58 Rev. 5 3.6.2.2 Master/Master (Station Clock) Care should be taken when using this mode. Make sure that

SDM-650B Satellite Modem Configuration Rev. 5 3–59 3.6.2.2.1 Modem Settings (Master) • TX-CLOCK: EXT. • Install JP1 and JP10 on buffer card (AS

Configuration SDM-650B Satellite Modem 3–60 Rev. 5 This page is intentionally left blank.

Rev. 5 4–1 Chapter 4. OPERATION This chapter provides front panel operation information for the standard SDM-650B modem. The following firmware ve

Operation SDM-650B Satellite Modem 4–2 Rev. 5 4.1 Front Panel The modem front panel (Figure 4-1) provides the local user interface, which is neces

SDM-650B Satellite Modem Operation Rev. 5 4–3 4.1.1 LED Indicators General modem status and summary fault information are indicated by eight LEDs

Operation SDM-650B Satellite Modem 4–4 Rev. 5 The modem responds by beeping whenever a key is pressed. • A single beep indicates that the key pre

SDM-650B Satellite Modem Operation Rev. 5 4–5 Table 4-2. Select Configuration Menu Menus Submenus/Options Comments TX-x Code Rate x = A, B, C

Operation SDM-650B Satellite Modem 4–6 Rev. 5 Table 4-3. Select Monitor Menu Menus Submenus/Options Comments Raw_BER Range: < 1.0E-4 to 25

SDM-650B Satellite Modem Operation Rev. 5 4–7 Table 4-5. Select Stored Faults (StFaults) Menu Menus Submenus/Options Comments Mod_Flt0 through

Rev. 5 vii Table of Contents CHAPTER 1. INTRODUCTION... 1–1 1.1 Pur

Operation SDM-650B Satellite Modem 4–8 Rev. 5 Table 4-6. Select Utility Menu Menus Submenus/Options Comments Time SS HH:MM AM/PM Seconds (SS) r

SDM-650B Satellite Modem Operation Rev. 5 4–9 4.1.4 Menu Explanations Modem configuration may be viewed or changed by entering the Config level f

Operation SDM-650B Satellite Modem 4–10 Rev. 5 TX_Freq Programs the modulator transmit frequency between 50 and 90 MHz, or between 100 and 180 MH

SDM-650B Satellite Modem Operation Rev. 5 4–11 BBLoopBk (Test Mode Configuration Option) Programs the modem for baseband loopback operation. Wh

Operation SDM-650B Satellite Modem 4–12 Rev. 5 SWP_CNTR Note: This window is only displayed when Fast Acquisition has been turned ON in the Utilit

SDM-650B Satellite Modem Operation Rev. 5 4–13 CW_Mode (Test Mode Configuration Option) Programs the modem for continuous wave mode. Three modes

Operation SDM-650B Satellite Modem 4–14 Rev. 5 BUF_clk Programs the plesiochronous buffer output clock for: • External • Satellite • Internal •

SDM-650B Satellite Modem Operation Rev. 5 4–15 4.1.4.2 Select Monitor Refer to Table 4-3. When the Monitor level is entered, use [←] and [→] to

Operation SDM-650B Satellite Modem 4–16 Rev. 5 4.1.4.3 Select Faults Refer to Table 4-4. The Faults level is accessible from the Select menu. Fau

SDM-650B Satellite Modem Operation Rev. 5 4–17 4.1.4.3.1 Modulator Faults (Mod_Flts) RF_Syn Modulator RF synthesizer fault. Data Clk Transmit d

Table of Contents SDM-650B Satellite Modem viii Rev. 5 3.1.1.7 Utility Defaults ...

Operation SDM-650B Satellite Modem 4–18 Rev. 5 4.1.4.4 Select Stored Faults (StFaults) Refer to Table 4-5. The modem stores the first 10 (Flt0 to

SDM-650B Satellite Modem Operation Rev. 5 4–19 4.1.4.5 Select Utility Refer to Table 4-6. For additional information, refer to Section A.2. Uti

Operation SDM-650B Satellite Modem 4–20 Rev. 5 POW ADJ Modulator power adjust offset. Allows the user to offset the modulator output power reado

SDM-650B Satellite Modem Operation Rev. 5 4–21 Assign TX_Fltrs Modulator symbol rate assignment. This function is used to view current filter ra

Operation SDM-650B Satellite Modem 4–22 Rev. 5 Assign RX_Fltrs Demodulator symbol rate assignment. This function is used to view current filter r

Rev. 6 5–1 Chapter 5. THEORY OF OPERATION This chapter contains information on the following cards: • Modulator • Sequential decoder/demodulator

Theory of Operation SDM-650B Satellite Modem 5–2 Rev. 6 A block diagram of the modulator is shown in Figure 5-1. INPUTDATADATASCRAMBLERDIFFERENTI

SDM-650B Satellite Modem Theory of Operation Rev. 6 5–3 5.1.1 Specifications Modulation Type QPSK (BPSK optional) Frequency Range 50 to 90 MHz,

Theory of Operation SDM-650B Satellite Modem 5–4 Rev. 6 Figure 5-2. Modulator Output Spectral Occupancy

SDM-650B Satellite Modem Theory of Operation Rev. 6 5–5 5.1.2 Theory of Operation Data that is to be transmitted is input to the digital interfac

SDM-650B Satellite Modem Table of Contents Rev. 5 ix 3.6.1.1.1 Modem Settings (Master)...

Theory of Operation SDM-650B Satellite Modem 5–6 Rev. 6 For example, the rate of the encoder at 7/8 rate means 8 bits are output for every 7 bits i

SDM-650B Satellite Modem Theory of Operation Rev. 6 5–7 5.2 Sequential Decoder/Demodulator Processor The modem sequential decoder/demodulator pro

Theory of Operation SDM-650B Satellite Modem 5–8 Rev. 6 5.2.1 Specification Demodulator Processor Operating Symbol Rate Range 32 Ks/s to 2048 Ks

SDM-650B Satellite Modem Theory of Operation Rev. 6 5–9 5.2.2 Theory of Operation 5.2.2.1 Demodulator Processor The demodulator processor, in co

Theory of Operation SDM-650B Satellite Modem 5–10 Rev. 6 5.2.2.2 Sequential Decoder The sequential decoder works in conjunction with the convoluti

SDM-650B Satellite Modem Theory of Operation Rev. 6 5–11 The input RAM buffers the data to provide history for the backwards searches. Data from t

Theory of Operation SDM-650B Satellite Modem 5–12 Rev. 6 5.2.2.2.1 Sequential Decoder BER Performance Specifications The guaranteed BER performanc

SDM-650B Satellite Modem Theory of Operation Rev. 6 5–13 10-410-310-510-6BER10-710-910-810-103.0 4.0 5.0 6.0Eb/N0 (dB)7.0 8.0 9.0 10.0 11.010-256

Theory of Operation SDM-650B Satellite Modem 5–14 Rev. 6 10-410-310-510-6BER10-710-910-810-103.0 4.0 5.0 6.0Eb/N0 (dB)7.0 8.0 9.0 10.0 11.010-256 k

SDM-650B Satellite Modem Theory of Operation Rev. 6 5–15 10-410-310-510-6BER10-710-910-810-103.0 4.0 5.0 6.0Eb/N0 (dB)7.0 8.0 9.0 10.0 11.010-2154

Table of Contents SDM-650B Satellite Modem x Rev. 5 CHAPTER 6. MAINTENANCE...

Theory of Operation SDM-650B Satellite Modem 5–16 Rev. 6 5.3 Demodulator The modem demodulator card is a 10.25” x 14” card that fits in the lower-

SDM-650B Satellite Modem Theory of Operation Rev. 6 5–17 5.3.1 Specifications Demodulation Type QPSK (BPSK optional) Frequency Range 50 to 90 M

Theory of Operation SDM-650B Satellite Modem 5–18 Rev. 6 5.4 Reacquisition, Fast Acquisition, and Directed Sweep The fast acquisition algorithm ha

SDM-650B Satellite Modem Theory of Operation Rev. 6 5–19 The reacquisition mode is intended to reduce the time for reacquisition at lower symbol r

Theory of Operation SDM-650B Satellite Modem 5–20 Rev. 6 5.4.3 Directed Sweep The directed sweep mode was designed to rapidly acquire a carrier of

Rev. 6 6–1 Chapter 6. MAINTENANCE This chapter provides information on the following: • System checkout • Fault isolation • Interface fault isol

Maintenance SDM-650B Satellite Modem 6–2 Rev. 6 The first step in turning up a carrier is to set the output frequency. This is done in the Config m

SDM-650B Satellite Modem Maintenance Rev. 6 6–3 Refer to Figure 6-3 for a typical eye pattern with noise, and Figure 6-4 for a typical eye pattern

Maintenance SDM-650B Satellite Modem 6–4 Rev. 6 Figure 6-1. Typical Output Spectrum Figure 6-2. Typical Output Spectrum

SDM-650B Satellite Modem Maintenance Rev. 6 6–5 Table 6-1. EFData Conversion of (S+N)/N to S/N and Eb/N0 for Various Code Rates (dB) Code Rate 1

SDM-650B Satellite Modem Table of Contents Rev. 5 xi B.1.3.6.3 Select Modulator Rate Variable ...

Maintenance SDM-650B Satellite Modem 6–6 Rev. 6 Figure 6-3. Typical Eye Pattern with Noise (Approximately 7.5 dB Eb/N0 ) Figure 6-4. Typic

SDM-650B Satellite Modem Maintenance Rev. 6 6–7 Figure 6-5. Typical Eye Constellation with Noise (Approximately 7.5 dB Eb/N0 ) Figure 6-6

Maintenance SDM-650B Satellite Modem 6–8 Rev. 6 6.1.3 Test Points The following sections detail front panel test points, with a description of the

SDM-650B Satellite Modem Maintenance Rev. 6 6–9 6.1.3.2 Demodulator Refer to Figure 6-8. TP10 VCXO Control Voltage. Approximately 0 to +2.5V s

Maintenance SDM-650B Satellite Modem 6–10 Rev. 6 6.1.3.3 Sequential Decoder/Demod Card Refer to Figure 6-9. TPG1 Ground. TP8 VCXO Control Voltag

SDM-650B Satellite Modem Maintenance Rev. 6 6–11 6.2 Fault Isolation System faults are reported in the Faults menu. Stored faults are reported in

Maintenance SDM-650B Satellite Modem 6–12 Rev. 6 I-CHANNL Activity alarm for the I channel digital filter. This alarm is considered a major alarm,

SDM-650B Satellite Modem Maintenance Rev. 6 6–13 I-CHANNL Indicates a loss of activity in the I channel of the quadrature demodulator. Typicall

Maintenance SDM-650B Satellite Modem 6–14 Rev. 6 6.2.3 Common Equipment Faults (CEq_Flts Menu) Fault Possible Problem and Action BATTERY M&

SDM-650B Satellite Modem Maintenance Rev. 6 6–15 6.3 Interface Fault Isolation Stored faults for the interface are reported in the StFaults menu

Table of Contents SDM-650B Satellite Modem xii Rev. 5 B.1.4.16 Bulk Consolidated Status Faults ...

Maintenance SDM-650B Satellite Modem 6–16 Rev. 6 6.3.2 Receive Faults (RX_INTF) The faults listed below are only displayed when the ASYNC overhea

SDM-650B Satellite Modem Maintenance Rev. 6 6–17 Table 6-2. Programmable Data Rates for the Variable Rate SDM-650B Modem 19.2 19.4 19.5 19.6 1

Maintenance SDM-650B Satellite Modem 6–18 Rev. 6 204.5 204.8 205.0 205.5 206.0 206.4 206.5 207.0 207.5 208.0 208.5 209.0 209.5 209.6 210.0 210.5 2

SDM-650B Satellite Modem Maintenance Rev. 6 6–19 609.6 610.0 611.2 612.0 612.8 614.0 614.4 616.0 617.6 618.0 619.2 620.0 620.8 622.0 622.4 624.0

Maintenance SDM-650B Satellite Modem 6–20 Rev. 6 2384.0 2392.0 2400.0 2408.0 2416.0 2424.0 2432.0 2440.0 2448.0 2456.0 2464.0 2472.0 2480.0 2488.0

SDM-650B Satellite Modem Maintenance Rev. 6 6–21 6.4 Module Replacement The modem cards are plug-in cards that can be replaced by removing the de

Maintenance SDM-650B Satellite Modem 6–22 Rev. 6 Table 6-3. EFData Part Numbers for SDM-650B Modules Modulators Base Part Number — AS/0773 Dash #

Rev. 6 A–1 Appendix A. DATA RATES AND FILTERS The modem will operate at data rates from 19.2 kbit/s to 3.584 Mbit/s. Data rates from 19.2 to 48 kb

Data Rates and Filters SDM-650B Satellite Modem A–2 Rev. 6 FIXED RATE MODULATOR FILTERVARIABLE RATEMODULATOR FILTERMODULATORMOUNTINGHARDWARE (2) Fi

SDM-650B Satellite Modem Data Rates and Filters Rev. 6 A–3 6. Re-install the daughter board hold-down screws (Figure A-1). Re-insert the modulato

SDM-650B Satellite Modem Table of Contents Rev. 5 xiii B.2.6 System Commands/Responses...

Data Rates and Filters SDM-650B Satellite Modem A–4 Rev. 6 ASSEMBLY ANDREVISION NUMBERDATA RATEINFORMATIONSERIALNUMBERVARIABLE RATE DEMODULATOR FI

SDM-650B Satellite Modem Data Rates and Filters Rev. 6 A–5 A.1.2 Hardware Configuration This section lists the hardware configuration of a standa

Data Rates and Filters SDM-650B Satellite Modem A–6 Rev. 6 A.2 Variable Rate Filters A.2.1 Data Rate Change Instructions 1. Turn OFF modem power

SDM-650B Satellite Modem Data Rates and Filters Rev. 6 A–7 A.2.2 Hardware Configuration This section lists the differences between a standard mod

Data Rates and Filters SDM-650B Satellite Modem A–8 Rev. 6 The following functions are found in the Select Config menu. Refer to Chapter 4 for more

SDM-650B Satellite Modem Data Rates and Filters Rev. 6 A–9 A.2.3 Utility The following functions are found in the Utility menu. Refer to Chapter

Data Rates and Filters SDM-650B Satellite Modem A–10 Rev. 6 ASSIGN RX_FLTRS Demodulator Symbol Rate Assignment. The demodulator has four symbol

Rev. 6 B–1 Appendix B. REMOTE CONTROL OPERATION This appendix describes the remote control operation of the SDM-650B: • Section B.1 describes the

Remote Control Operation SDM-650B Satellite Modem B–2 Rev. 6 B.1.1 General Remote controls and status information are transferred via an RS-485 (op

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–3 B.1.2.2 Device Address The device address is the address of the one satellite modem wh

Table of Contents SDM-650B Satellite Modem xiv Rev. 5 B.2.8.20 Change Status ...

Remote Control Operation SDM-650B Satellite Modem B–4 Rev. 6 B.1.2.3 Command/Response The command/response portion of the message contains a variab

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–5 B.1.3 Configuration Commands/Responses B.1.3.1 Remote This command configures the mod

Remote Control Operation SDM-650B Satellite Modem B–6 Rev. 6 B.1.3.5 Set Modulator Power Offset Command: <add/MPO_snn.n”cr” Response: >add/

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–7 B.1.3.7 Modulator Rate The modulator has four symbol rate filters. Each filter is for

Remote Control Operation SDM-650B Satellite Modem B–8 Rev. 6 B.1.3.7.2 Select Modulator Rate Command: <add/SMRx_”cr” Response: >add/SMRx_”c

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–9 B.1.3.8 Demodulator Rate The demodulator has four symbol rate filters. Each filter is

Remote Control Operation SDM-650B Satellite Modem B–10 Rev. 6 B.1.3.8.2 Select Demodulator Rate Command: <add/SDRx_”cr” Response: >add/SDRx

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–11 B.1.3.11 Differential Encoder Enable Command: <add/DENC_xxx”cr” Response: >ad

Remote Control Operation SDM-650B Satellite Modem B–12 Rev. 6 B.1.3.15 RF Loopback Command: <add/RFL_xxx”cr” Response: >add/RFL_xxx”cr””lf”

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–13 B.1.3.18 Date Command: <add/DATE_mm/dd/yy”cr” Response: >add/DATE_mm/dd/yy”cr

SDM-650B Satellite Modem Table of Contents Rev. 5 xv F.5.2.3.1 Modulator Faults (Mod_FLTS) ...

Remote Control Operation SDM-650B Satellite Modem B–14 Rev. 6 B.1.3.21 Sweep Reacquisition This command is used to specify time duration of the rea

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–15 B.1.3.22.1 Sweep Center Frequency This command sets the sweep center frequency. Durin

Remote Control Operation SDM-650B Satellite Modem B–16 Rev. 6 B.1.3.22.3 Sweep Direction This command sets the direction of the sweep travel. “+” s

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–17 B.1.3.24.1 Buffer Clock Command: <add/BC_xxx”cr” Response: >add/BC_xxx”cr””lf

Remote Control Operation SDM-650B Satellite Modem B–18 Rev. 6 B.1.4. Status Commands/Responses B.1.4.1 Configuration B.1.4.1.1 Modulator/Coder St

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–19 B.1.4.1.3 Demodulator/Decoder Configuration Status The Demodulator/Decoder configurat

Remote Control Operation SDM-650B Satellite Modem B–20 Rev. 6 B.1.4.1.4 Demodulator/Decoder Configuration Program This command is used by the SMS-6

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–21 B.1.4.3 Modulator Status The modulator status is returned as a block of data which in

Remote Control Operation SDM-650B Satellite Modem B–22 Rev. 6 B.1.4.5 Common Equipment Status The common equipment status command causes a block of

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–23 B.1.4.7 BER Status B.1.4.7.1 Raw BER Command: <add/RBER_”cr” Response: >add/

Table of Contents SDM-650B Satellite Modem xvi Rev. 5 G.6.4.1.3.3 Select Modulator Rate Variable...

Remote Control Operation SDM-650B Satellite Modem B–24 Rev. 6 B.1.4.8 Eb/N0 Status The Eb/N0 status command causes the Eb/N0 ratio to be returned.

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–25 B.1.4.11 Receive Signal Level Status Command: <add/RSL_”cr” Response: >add/RS

Remote Control Operation SDM-650B Satellite Modem B–26 Rev. 6 B.1.4.13 Stored Faults Information on stored faults is returned when requested. If no

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–27 B.1.4.13.3 Common Equipment Stored Faults Command: <add/CSF_#”cr” Response: >

Remote Control Operation SDM-650B Satellite Modem B–28 Rev. 6 B.1.4.14 Bulk Consolidated Status This command causes bulk modem status to be returne

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–29 Parameter 14 (p14): Demodulator rate currently programmed. p14 = nnn_mmmm.m, where “nn

Remote Control Operation SDM-650B Satellite Modem B–30 Rev. 6 B.1.4.15 Bulk Consolidated Analog Status This command is similar to the “BCS_” comman

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–31 Where: Character “c”: Demodulator fault status character 1. Bit 6 = 1 always. Bit 5 =

Remote Control Operation SDM-650B Satellite Modem B–32 Rev. 6 B.1.4.18 Equipment Type This command returns the equipment model number and M&C f

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–33 B.2 Asynchronous Overhead Interface Support Option This section describes the remote

SDM-650B Satellite Modem Table of Contents Rev. 5 xvii G.6.4.5.12.1 Modulator Stored Faults ...

Remote Control Operation SDM-650B Satellite Modem B–34 Rev. 6 B.2.2.1 Start Character A single character precedes all messages transmitted on the r

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–35 B.2.2.3 Command/Response The command/response portion of the message contains a varia

Remote Control Operation SDM-650B Satellite Modem B–36 Rev. 6 B.2.3 Modulator Configuration Commands B.2.3.1 Set Modulator Frequency Command: <

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–37 B.2.3.4 Set Modulator Output Power Level Command: <add/MOP_snn.n”cr” Response: &

Remote Control Operation SDM-650B Satellite Modem B–38 Rev. 6 B.2.3.5 Modulator Rate The modulator has four symbol rate filters. Each filter is for

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–39 B.2.3.5.2 Select Modulator Rate Command: <add/SMRx_”cr” Response: >add/SMRx_”

Remote Control Operation SDM-650B Satellite Modem B–40 Rev. 6 B.2.3.7 Differential Encoder Enable Command: <add/DENC_xxx”cr” Response: >add

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–41 B.2.4.2.1 Demodulator Filter Rate Assignment Command: <add/ADRx_nnn_mmmm.m”cr” Re

Remote Control Operation SDM-650B Satellite Modem B–42 Rev. 6 B.2.4.3 Descramble Enable Command: <add/DE_xxx”cr” Response: >add/DE_xxx”cr””

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–43 B.2.4.7 Sweep Reacquisition This command is used to specify time duration of the reac

Table of Contents SDM-650B Satellite Modem xviii Rev. 5 Figures Figure 1-1. SDM-650B...

Remote Control Operation SDM-650B Satellite Modem B–44 Rev. 6 B.2.4.8.1 Sweep Center Frequency This command sets the sweep center frequency. During

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–45 B.2.4.8.3 Sweep Direction This command sets the direction of the sweep travel. “+” se

Remote Control Operation SDM-650B Satellite Modem B–46 Rev. 6 B.2.5.3 Receive Clock Command: <add/RC_xxx”cr” Response: >add/RC_xxx”cr””lf”]

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–47 B.2.5.7 Interface Coding Format Transmit Command: <add/ICFT_xxxx”cr” Response: &

Remote Control Operation SDM-650B Satellite Modem B–48 Rev. 6 B.2.5.11 Transmit Overhead Baud Rate Command: <add/TOBR_nnnnn”cr” Response: >

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–49 B.2.5.15 Overhead Channels Parity Command: <add/OCP_xxxx”cr” Response: >add/O

Remote Control Operation SDM-650B Satellite Modem B–50 Rev. 6 B.2.6.2 Date Command: <add/DATE_mm/dd/yy”cr” Response: >add/DATE_mm/dd/yy”cr”

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–51 B.2.6.5 Modem Operation Mode This command configures the modem for simplex or duplex

Remote Control Operation SDM-650B Satellite Modem B–52 Rev. 6 B.2.7.1.3 Maximum AUPC Power Limit Command: <add/MAXP_-nn.n”cr” Response: >ad

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–53 B.2.7.1.7 AUPC Local Carrier Loss Action Command: <add/LCL_xxxx”cr” Response: &g

SDM-650B Satellite Modem Table of Contents Rev. 5 xix Figure E-1. Rear Panel View ...

Remote Control Operation SDM-650B Satellite Modem B–54 Rev. 6 B.2.7.2.2 Remote Interface Substitution Pattern (Transmit 2047 Pattern) Command: <

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–55 B.2.8 Status Commands/Responses B.2.8.1 Configuration Status B.2.8.1.1 Modulator/Co

Remote Control Operation SDM-650B Satellite Modem B–56 Rev. 6 B.2.8.1.2 Modulator/Coder Configuration Program This command is used by the SMS-658 M

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–57 B.2.8.1.3 Demodulator/Decoder Configuration Status The Demodulator/Decoder configurat

Remote Control Operation SDM-650B Satellite Modem B–58 Rev. 6 B.2.8.1.4 Demodulator/Decoder Configuration Program This command is used by the SMS-6

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–59 B.2.8.1.5 Interface Configuration Status The interface configuration status command c

Remote Control Operation SDM-650B Satellite Modem B–60 Rev. 6 B.2.8.2 Modem Faults Status (Summary) This command returns the current overall fault

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–61 B.2.8.5 Common Equipment Status The common equipment status command causes a block of

Remote Control Operation SDM-650B Satellite Modem B–62 Rev. 6 B.2.8.8 Bit Error Rate Status B.2.8.8.1 Raw BER Command: <add/RBER_”cr” Response

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–63 B.2.8.9 Eb/N0 The Eb/N0 status command causes the Eb/N0 ratio to be returned. Eb/N0 i

Table of Contents SDM-650B Satellite Modem xx Rev. 5 Tables Table 1-1. Operating Specifications ...

Remote Control Operation SDM-650B Satellite Modem B–64 Rev. 6 B.2.8.12 Receive Signal Level Command: <add/RSL_”cr” Response: >add/RSL_-nn.n

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–65 B.2.8.16 Stored Faults Information on stored faults is returned when requested. If no

Remote Control Operation SDM-650B Satellite Modem B–66 Rev. 6 B.2.8.16.3 Common Equipment Stored Faults Command: <add/CSF_#”cr” Response: >

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–67 B.2.8.17 Bulk Consolidated Status This command causes bulk modem status to be returne

Remote Control Operation SDM-650B Satellite Modem B–68 Rev. 6 Parameter 15 (p15): Demodulator filter B assignment. p15 = nnn_mmmm.m, where “nnn” is

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–69 (See Note 1) Parameter 40 (p40): Interface buffer size. p40 = nnnnnn, where “nnnnnn”

Remote Control Operation SDM-650B Satellite Modem B–70 Rev. 6 B.2.8.19 Bulk Consolidated Status Faults This command causes all modem fault status t

SDM-650B Satellite Modem Remote Control Operation Rev. 6 B–71 Where: Character “f”: Common equipment fault status character 2. Bit 6 = 1 always. Bit

Remote Control Operation SDM-650B Satellite Modem B–72 Rev. 6 B.2.8.20 Change Status This command indicates that a change has or has not occurred o

Rev. 6 C–1 Appendix C. FIELD COMPATIBILITY EFData modems can be configured to be compatible with other modems in the field: • Fairchild • Comstre

Rev. 5 1–1 Chapter 1. INTRODUCTION This manual describes the SDM-650B satellite modem, referred to in this document as “the modem” (Figure 1-1). F

Field Compatibility SDM-650B Satellite Modem C–2 Rev. 6 C.2 SDM-650B Fairchild-Compatible Modem To change the standard modem to a Fairchild-compat

Rev. 5 D–1 Appendix D. SOFTWARE CHANGE INSTRUCTIONS Steps 1 through 5 are instructions for changing software on the M&C card. Steps 6 through

Software Change Instructions SDM-650B Satellite Modem D–2 Rev. 5 8. Install the new firmware FW/XXXX in UX position on the Viterbi decoder. See Ta

Rev. 5 E–1 Appendix E. AGC INTERFACE The AGC interface option has been designed for external monitoring of the dynamic range of a modem. The AGC

AGC Interface SDM-650B Satellite Modem E–2 Rev. 5 GROUNDERDEREMOTEFAULTJ8DATAI/OIJ7J6CP1CP2TX/IFOUTPUTRX/IFINPUTMADE IN USAJ9AGCGAINOFFSETJ10J11 F

SDM-650B Satellite Modem AGC Interface Rev. 5 E–3 E.2.2 Installation Procedure Refer to Figure E-2 as needed. To install the AGC interface option

AGC Interface SDM-650B Satellite Modem E–4 Rev. 5 RemoteJ8GndCP1CP2DataI/OMother BoardJ5 J4-5 +12 -12 +5Gnd-5 +12 -12 +5J6C2FaultJ7J9MOD J1DECODE

SDM-650B Satellite Modem AGC Interface Rev. 5 E–5 Figure E-3. AGC Adapter Board

AGC Interface SDM-650B Satellite Modem E–6 Rev. 5 This page is intentionally left blank.

Rev. 5 F–1 Appendix F. ASYNCHRONOUS OVERHEAD CHANNEL UNIT This appendix provides information on operating the modem from the front panel with the a

Introduction SDM-650B Satellite Modem 1–2 Rev. 5 1.1 Purpose and Function The modem is a high performance, full-duplex, Bi-Phase Shift Keying/Quadr

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–2 Rev. 5 F.1 Functional Description of ASYNC Overhead Channel Unit The ASYNC overhea

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–3 RECEIVE SECTIONTRANSMIT SECTIONINTERFACEES TO ES ASYNCLOGIC (MUX)RS-232 TIM

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–4 Rev. 5 F.1.1 Terrestrial Interface The terrestrial interface (AS/1311) forms the t

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–5 JP4112JP11AS/1311 REVJP51JP6 JP7JP81JP131JP1011111JP12JP9JP321ASYNC OVERHEA

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–6 Rev. 5 F.1.2 Multiplexer The data processor (AS/1289) forms the bottom of the 2-bo

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–7 F.1.4 Plesiochronous Buffer Where the option is installed, data from the D

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–8 Rev. 5 F.2 ASYNC Interface Connector Pinouts The ASYNC interface is provided on a

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–9 F.3 ASYNC Interface Specifications Main Channel Physical Interface MIL-ST

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–10 Rev. 5 F.4 Functional Description of ASYNC Overhead Channel Unit with AUPC The AS

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–11 The action at loss of lock is as follows (modem A loses carrier detect):

SDM-650B Satellite Modem Introduction Rev. 5 1–3 The modem contains: • Built-in scrambler/descrambler • Differential encoder/decoder • Transmit

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–12 Rev. 5 F.5 Front Panel Operation Note: The same version of firmware (FW/0713-34L,

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–13 F.5.1 Menus and Options Overview Refer to Section F.5.2 for menu and opti

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–14 Rev. 5 Table F-5. Select Configuration Demodulator Menu (with AUPC) Menus Subme

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–15 Table F-6. Select Configuration Interface Menu (with AUPC) Menus Submenu

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–16 Rev. 5 CH LENTH 5 bits 6 bits 7 bits 8 bits STOP BIT 1 bit 2 bits PARITY EVEN

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–17 Table F-9. Select Faults Menu (with AUPC) Menus Submenus/Options Commen

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–18 Rev. 5 Table F-10. Select Stored Faults (StFaults) Menu (with AUPC) Menus Subme

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–19 Table F-12. Select Utility Menu (with AUPC) Menus Submenus/Options Com

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–20 Rev. 5 F.5.2 Menu Explanations F.5.2.1 Select Configuration Refer to Table F-3.

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–21 F.5.2.1.1 Configuration Modulator Refer to Table F-4. TX-x Transmitter

Introduction SDM-650B Satellite Modem 1–4 Rev. 5 Figure 1-3. Modular Construction Test points are located on the front board edge of the modula

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–22 Rev. 5 CW_Mode (Test Mode Configuration Option) Programs the modem for continuou

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–23 F.5.2.1.2 Configuration Demodulator Refer to Table F-5. RX-x Receiver R

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–24 Rev. 5 SWP_RACQ Sets the sweep reacquisition rate from 0 to 999 seconds. The ti

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–25 BERT_set This function is used to set the BER threshold. If the BER thre

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–26 Rev. 5 BBLoopBk (Test Mode Configuration Option) Programs the modem for baseband

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–27 RX BAUD Programs the receiver baud rate. On entry, the current receiver

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–28 Rev. 5 F.5.2.1.4 Configuration AUPC Refer to Table F-7. AUPC Programs the AUPC

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–29 F.5.2.2 Select Monitor Refer to Table F-8. When the Monitor level is ent

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–30 Rev. 5 F.5.2.3 Select Faults Refer to Table F-9. The Faults level is accessible

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–31 F.5.2.3.1 Modulator Faults (Mod_FLTS) RF_Syn Modulator RF synthesizer fa

SDM-650B Satellite Modem Introduction Rev. 5 1–5 1.3 System Specification Table 1-1 lists the operating specifications of the modem. Table 1-1. O

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–32 Rev. 5 F.5.2.3.4 Transmit Faults (TX_INTF) The faults listed below are only displ

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–33 F.5.2.4 Select Stored Faults (StFaults) Refer to Table F-10. The modem

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–34 Rev. 5 F.5.2.5 Select Remote Refer to Table F-11. The remote functions may be vi

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–35 F.5.2.6 Select Utility Refer to Table F-12. The Utility functions provid

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–36 Rev. 5 POW ADJ Modulator power adjust offset. Allows the operator to offset the

SDM-650B Satellite Modem Asynchronous Overhead Channel Unit Rev. 5 F–37 Assign TX_Fltrs Transmit filter display/assignment utility. Used to view

Asynchronous Overhead Channel Unit SDM-650B Satellite Modem F–38 Rev. 5 This page is intentionally left blank.

Rev. 5 G–1 Appendix G. TROJAN INTERFACE This appendix provides information on the Trojan interface option for the SDM-650B, including: • Functional

Trojan Interface SDM-650B Satellite Modem G–2 Rev. 5 The data rate synthesizer may take its input reference clock (REF_CLK) from one of four differe

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–3 Receive Data Rate (kbit/s) N K L Receive VCO Frequency (kHz) 56 7 64 7 3584 64 8 64 8 4096

Copyright © EFData Corporation, 1995, 1996. All rights reserved. Printed in the USA. EFData Corporation, 2105 West 5th Place, Tempe, Arizona 85281 US

Introduction SDM-650B Satellite Modem 1–6 Rev. 5 Additional Demodulator Specifications Input Power: Desired Carrier Composite -30 to -55 dBm. +30

Trojan Interface SDM-650B Satellite Modem G–4 Rev. 5 Receiver Ready (RR) indicates that an RF carrier is being received and demodulated with a suffi

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–5 G.2 Connector Pinouts The Asynchronous dejittered MIL-STD-188-114 interface is provided on a 3

Trojan Interface SDM-650B Satellite Modem G–6 Rev. 5 G.3 Specification G.3.1 MIL-STD-188-114 Parameters Circuit Supported SD, ST, TT, RD, RT, DM,

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–7 G.4 Configuration Guide Menu Selection Options BBLoopBk (Baseband Loopback) OFF/ON EXT_REF (

Trojan Interface SDM-650B Satellite Modem G–8 Rev. 5 G.4.2 Demodulator/Decoder Defaults (Dmd_Flts) RXA Receive Filter A 7/8 decode rate, 56 kbit/

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–9 G.5 Front Panel Operation The operation of the front panel has the same “look and feel” as the

Trojan Interface SDM-650B Satellite Modem G–10 Rev. 5 Table G-2. Select Configuration Modulator Menu Menus Submenus/Options Comments TX-x Code

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–11 Table G-4. Select Configuration Interface Menu Menus Submenus/Options Comments TX_Clock R

Trojan Interface SDM-650B Satellite Modem G–12 Rev. 5 Table G-6. Select Faults (StFaults) Menu Menus Submenus/Options Comments Mod Flts RF_Syn

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–13 Table G-7. Select StFaults Menu Menus Submenus/Options Comments Mod Fltx MM/DD/YY HH/MM/

SDM-650B Satellite Modem Introduction Rev. 5 1–7 The specifications for the Bit Energy-to-Noise Ratio (Eb/N0) required to achieve 10-5 and 10-7 BER

Trojan Interface SDM-650B Satellite Modem G–14 Rev. 5 G.5.2 Menu Explanations Note: Only the differences between the standard front panel menus and

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–15 G.5.2.4 Select Stored Faults (StFaults) Refer to Chapter 4 for explanations of menus and opti

Trojan Interface SDM-650B Satellite Modem G–16 Rev. 5 G.6 Remote Control Operation This section describes the remote control operation of the SDM-6

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–17 G.6.1.1.1 Start Character A single character precedes all messages transmitted on the remote

Trojan Interface SDM-650B Satellite Modem G–18 Rev. 5 G.6.2 Command/Response The command/response portion of the message contains a variable length

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–19 G.6.4 Configuration Commands/Responses G.6.4.1 Modulator G.6.4.1.1 Set Modulator Frequency

Trojan Interface SDM-650B Satellite Modem G–20 Rev. 5 G.6.4.1.3 Modulator Rate The modulator has four symbol rate filters. Each filter is for a spe

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–21 G.6.4.1.3.2 Select Modulator Rate Command: <add/SMRx_”cr” Response: >add/SMRx_”cr” RF

Trojan Interface SDM-650B Satellite Modem G–22 Rev. 5 G.6.4.1.3.5 Set Modulator Output Power Level Command: <add/MOP_snn.n”cr” Response: >a

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–23 G.6.4.2 Demodulator G.6.4.2.1 Set Demodulator Frequency Command: <add/DF_nnn.nnnn”cr” Re

Introduction SDM-650B Satellite Modem 1–8 Rev. 5 10-410-310-510-6BER10-710-910-810-103.0 4.0 5.0 6.0Eb/N0 (dB)7.0 8.0 9.0 10.0 11.010-2100 kbit/sSPE

Trojan Interface SDM-650B Satellite Modem G–24 Rev. 5 G.6.4.2.2.1 Demodulator Filter Rate Assignment Command: <add/ADRx_nnn_mmmm.m”cr” Response

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–25 G.6.4.2.3 Descramble Enable Command: <add/DE_xxx”cr” Response: >add/DE_xxx”cr””lf”]

Trojan Interface SDM-650B Satellite Modem G–26 Rev. 5 G.6.4.2.7 Fast Acquisition Mode This command is used to enable or disable fast acquisition an

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–27 G.6.4.2.9 Sweep Width Range This command sets the overall travel of the sweep during acquisit

Trojan Interface SDM-650B Satellite Modem G–28 Rev. 5 G.6.4.3 Interface/Doppler Buffer G.6.4.3.1 Baseband Loopback Command: <add/BBL_xxx”cr” R

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–29 G.6.4.3.5 Interface Reference Clock Command: <add/IRC_xxx”cr” Response: >add/IRC_xxx”

Trojan Interface SDM-650B Satellite Modem G–30 Rev. 5 G.6.4.4 System Commands/Responses G.6.4.4.1 Time of Day Command: <add/TIME_hh:mmxx”cr” R

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–31 G.6.4.4.3 Remote Configures the modem for remote operation. The modem will respond to any sta

Trojan Interface SDM-650B Satellite Modem G–32 Rev. 5 G.6.4.5 Status Commands/Responses G.6.4.5.1 Configuration G.6.4.5.1.1 Modulator/Coder Confi

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–33 G.6.4.5.1.2 Modulator/Coder Configuration Program This command is used by the SMS-658 or SMS-

SDM-650B Satellite Modem Introduction Rev. 5 1–9 10-410-310-510-6BER10-710-910-810-103.0 4.0 5.0 6.0Eb/N0 (dB)7.0 8.0 9.0 10.0 11.010-2100 kbit/sSPE

Trojan Interface SDM-650B Satellite Modem G–34 Rev. 5 G.6.4.5.1.4 Demodulator/Decoder Configuration Program This command is used by the SMS-658 or

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–35 G.6.4.5.2 Modem Faults Status (Summary) This command returns the current overall fault condit

Trojan Interface SDM-650B Satellite Modem G–36 Rev. 5 G.6.4.5.5 Common Equipment Status The common equipment status command causes a block of data

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–37 G.6.4.5.6.2 Corrected BER Command: <add/CBER_”cr” Response: >add/CBER_nE-m”cr””lf”]

Trojan Interface SDM-650B Satellite Modem G–38 Rev. 5 G.6.4.5.9 Demodulator Rate Command: <add/DR_”cr” Response: >add/DR_nnn_mmmm.m”cr””lf”

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–39 G.6.4.5.12.1 Modulator Stored Faults Command: <add/MSF_#”cr” Response: >add/MSF_# hh:

Trojan Interface SDM-650B Satellite Modem G–40 Rev. 5 G.6.4.5.13 Bulk Consolidated Status This command causes bulk modem status to be returned. To

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–41 Parameter 15 (p15): Demodulator filter A assignment. p15 = nnn_mmmm.m, where “nnn” is the code

Trojan Interface SDM-650B Satellite Modem G–42 Rev. 5 G.6.4.5.14 Bulk Consolidated Analog Status This command is similar to the “BCS_” command, but

SDM-650B Satellite Modem Trojan Interface Rev. 5 G–43 Character “c”: Demodulator fault status character 1. Bit 6 = 1 always. Bit 5 = Demodulator fa

Introduction SDM-650B Satellite Modem 1–10 Rev. 5 10-410-310-510-6BER10-710-910-810-103.0 4.0 5.0 6.0Eb/N0 (dB)7.0 8.0 9.0 10.0 11.010-2100 kbit/sSP

Trojan Interface SDM-650B Satellite Modem G–44 Rev. 5 G.6.4.5.17 Equipment Type This command returns the equipment model number and M&C firmwar

Rev. 5 Draft g–1 Glossary The following is a list of acronyms and abbreviations that may be found in this manual. Acronym/ Abbreviation Definitio

Glossary SDM-650B Satellite Modem g–2 Draft Rev. 5 BTU British Thermal Unit BW Backward Alarm or Bandwidth BWR Bandwidth Ratio C Celsius C/N Carri

SDM-650B Satellite Modem Glossary Rev. 5 Draft g–3 DTE Data Terminal Equipment E&M Ear and Mouth Eb/N0 Bit Energy-to-Noise Ratio ECL Emitte

Glossary SDM-650B Satellite Modem g–4 Draft Rev. 5 LSI Large Scale Integration (semiconductors) m Mille (10-3) M&C Monitor and Control mA Mill

SDM-650B Satellite Modem Glossary Rev. 5 Draft g–5 RX Receive (Receiver) RXCLK Receive Clock RXD Receive Data RZ Return-to-Zero s Second S/N Signal

Glossary SDM-650B Satellite Modem g–6 Draft Rev. 5 This page is intentionally left blank.

METRIC CONVERSIONS Units of Length Unit Centimeter Inch Foot Yard Mile Meter Kilometer Millimeter 1 centimeter — 0.3937 0.03281

2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 • 333 • 2200 PHONE 480 • 333 • 2161 FAX

SDM-650B Satellite Modem Introduction Rev. 5 1–11 10-410-310-510-6BER10-710-910-810-103.0 4.0 5.0 6.0Eb/N0 (dB)7.0 8.0 9.0 10.0 11.010-2100 kbit/sor

Introduction SDM-650B Satellite Modem 1–12 Rev. 5 Figure 1-8. SDM-650B Typical Output Spectrum

Rev. 5 2–1 Chapter 2. INSTALLATION This chapter provides the following information: • Unpacking instructions • External connections • System requ

Installation SDM-650B Satellite Modem 2–2 Rev. 5 4. Save the packing material for storage or reshipment purposes. 5. Inspect the equipment for a

SDM-650B Satellite Modem Installation Rev. 5 2–3 2.2.1 DATA I/O For information and pinouts on the data connectors, refer to Chapter 3. 2.2.2 Re

Warranty Policy This EFData Corporation product is warranted against defects in material and workmanship for a period of one year from the

Installation SDM-650B Satellite Modem 2–4 Rev. 5 The fault interface is provided on a 9-pin female D connector. Screw locks are provided for mechan

SDM-650B Satellite Modem Installation Rev. 5 2–5 2.2.7 GROUND A #10-32 stud is available on the rear panel for the purpose of connecting a common

Installation SDM-650B Satellite Modem 2–6 Rev. 5 2.4 System Installation After unpacking, install the modem as follows: 1. Mount the modem chass

Rev. 5 3–1 Chapter 3. CONFIGURATION This chapter provides the following information: • Monitor and control • Digital interfaces • Doppler buffe

Configuration SDM-650B Satellite Modem 3–2 Rev. 5 Figure 3-1. M&C Card 3.1.1 Description of Options 3.1.1.1 Remote Interface All modem fun

SDM-650B Satellite Modem Configuration Rev. 5 3–3 3.1.1.2 Remote Baud Rate The remote communications baud rate and parity are programmed by a swi

Configuration SDM-650B Satellite Modem 3–4 Rev. 5 3.1.1.3 Remote Address Each modem must be configured for a distinct address between 1 and 255 to

SDM-650B Satellite Modem Configuration Rev. 5 3–5 3.1.1.5 Modulator/Coder Defaults TXA Transmit Filter A — 7/8 code rate, 56 kbit/s TXB Transmi

Configuration SDM-650B Satellite Modem 3–6 Rev. 5 3.1.2 Remote Interface Specification Refer to Appendix B for remote control operation informatio

SDM-650B Satellite Modem Configuration Rev. 5 3–7 3.2 Digital Interfaces 3.2.1 RS-422 and MIL-STD-188-114 Interface 3.2.1.1 Functional Descript

Rev. 5 i Preface About this Manual This manual provides installation and operation information for the EFData SDM-650B satellite modem. This is a t

Configuration SDM-650B Satellite Modem 3–8 Rev. 5 Electrical characteristics of the RS-422 interface signals are defined in EIA-STD-RS-422. Electr

SDM-650B Satellite Modem Configuration Rev. 5 3–9 The RS-422 and MIL-STD-188-114 interface provides a Send Timing (ST) clock signal at the modem d

Configuration SDM-650B Satellite Modem 3–10 Rev. 5 Loop timing is supported by the selection of jumper JP10. When in the ON position, the transmit

SDM-650B Satellite Modem Configuration Rev. 5 3–11 Table 3-1. AS/0627-3 Rev. E Board Jumper Selection JP1 TX Clock Select Normal Invert Auto J

Configuration SDM-650B Satellite Modem 3–12 Rev. 5 3.2.1.2 Connector Pinouts The RS-422 and MIL-STD-188-114 interface is provided on a 37-pin fema

SDM-650B Satellite Modem Configuration Rev. 5 3–13 3.2.1.3 Specification Circuit Supported SD, ST, TT, RD, RT, DM, RR, MOD, FAULT, DEMOD FAULT,

Configuration SDM-650B Satellite Modem 3–14 Rev. 5 3.2.2 V.35 Interface 3.2.2.1 Functional Description The V.35 digital interface (Figure 3-4) pr

SDM-650B Satellite Modem Configuration Rev. 5 3–15 INT/EXT CLOCKTO CONTROL LOGICLOOP TIMINGTO LOGIC CONTROLTO BUFFEROPTIONSSCTMODEMTX CLOCKTX DATA

Configuration SDM-650B Satellite Modem 3–16 Rev. 5 Data received by the modem is output on the RD lines, while the recovered clock is output on the

SDM-650B Satellite Modem Configuration Rev. 5 3–17 Table 3-2 lists the jumper settings for the V.35 interface. These jumpers are factory set for a

Preface SDM-650B Satellite Modem ii Rev. 5 • Appendix B — describes the unit’s remote control operation protocol and command structure. • Appendi

Configuration SDM-650B Satellite Modem 3–18 Rev. 5 3.2.2.2 Connector Pinouts The V.35 interface is provided on the industry standard 34-pin block

SDM-650B Satellite Modem Configuration Rev. 5 3–19 3.2.2.3 Specification Circuit Supported SD, SCT, SCTE, RD, SCR, DSR, RLSD, MOD, FAULT, DEMOD

Configuration SDM-650B Satellite Modem 3–20 Rev. 5 3.2.3 DS-1 Interface 3.2.3.1 Functional Description The DS-1 digital interface (Figure 3-6) pr

SDM-650B Satellite Modem Configuration Rev. 5 3–21 DS-1 LINETO BUFFEROPTIONSTX CLOCKDS-1DEJITTERRECEIVER/DRIVERTERRESTRIALSDRDLOOPBACK CONTROLMODE

Configuration SDM-650B Satellite Modem 3–22 Rev. 5 Table 3-3. Equalizer Control Distance to DSX (Ft) (See Note 1) SW1 (See Note 2) (applies on

SDM-650B Satellite Modem Configuration Rev. 5 3–23 3.2.3.2 Connector Pinouts The DS-1 interface is provided on a 15-pin female D connector access

Configuration SDM-650B Satellite Modem 3–24 Rev. 5 3.2.4 G.703, 2048 kbit/s Interface 3.2.4.1 Functional Description The G.703 2048 kbit/s digita

SDM-650B Satellite Modem Configuration Rev. 5 3–25 DS-1 LINETO BUFFEROPTIONSTX CLOCKDS-1DEJITTERRECEIVER/DRIVERTERRESTRIALSDRDLOOPBACK CONTROLMODE

Configuration SDM-650B Satellite Modem 3–26 Rev. 5 They are available on the FAULT connector on the modem rear panel. Generation of these fault con

SDM-650B Satellite Modem Configuration Rev. 5 3–27 3.2.4.3 Switch Configuration for G.703 2048 kbit/s Interface Switch 1 is an 8-position dip swi

SDM-8000 Satellite Modem Preface Rev. 5 iii References Used in this Manual Military Standards References to “MIL-STD-188” apply to the 114A series (

Configuration SDM-650B Satellite Modem 3–28 Rev. 5 3.2.4.5 G.703 2048 kbit/s Connector Board Option The G.703 2048 kbit/s interface has a connecto

SDM-650B Satellite Modem Configuration Rev. 5 3–29 Table 3-5. G.703 2048 kbit/s Interface Connector Jumpers Switch J3 (EXT REF) J4 (SEND DATA)

Configuration SDM-650B Satellite Modem 3–30 Rev. 5 The G.703 2048 kbit/s optional connector board provides the balanced signals on a 15-pin female

SDM-650B Satellite Modem Configuration Rev. 5 3–31 3.2.4.9 Specification Pairs Symmetrical pair, coaxial pair optional. Circuits Supported SD,

Configuration SDM-650B Satellite Modem 3–32 Rev. 5 RECEIVE SECTIONTRANSMIT SECTIONINTERFACEES TO ES ASYNCLOGIC (MUX)RS-232 TIMINGFRAMING/P/OINTLPBK

SDM-650B Satellite Modem Configuration Rev. 5 3–33 The “handshake” asynchronous signals are: • RTS • CTS • DM • DSR • RR • RLSD This board may o

Configuration SDM-650B Satellite Modem 3–34 Rev. 5 Table 3-6. Asynchronous Overhead Jumper Table JP # Pin # Function JP1 1 to 3, and 2 to 4 3 t

SDM-650B Satellite Modem Configuration Rev. 5 3–35 3.2.5.3 Multiplexer The data processor, AS/1289, forms the bottom of the 2-board module. This

Configuration SDM-650B Satellite Modem 3–36 Rev. 5 3.2.5.5 Plesiochronous Buffer User data from the DEMUX section is fed into a plesiochronous buf

SDM-650B Satellite Modem Configuration Rev. 5 3–37 3.2.5.7 Interface Connector Pinouts The asynchronous interface is provided on a 50-pin female

Preface SDM-650B Satellite Modem iv Rev. 5 European EMC Directive In order to meet the European Electro-Magnetic Compatibility (EMC) Directive (EN55

Configuration SDM-650B Satellite Modem 3–38 Rev. 5 3.2.5.8 Asynchronous Interface Specifications Main Channel Physical Interface MIL-STD-188-114.

SDM-650B Satellite Modem Configuration Rev. 5 3–39 3.2.6 Asynchronous Breakout Panel The asynchronous breakout panel supports the use of the asyn

Configuration SDM-650B Satellite Modem 3–40 Rev. 5 3.3 Doppler Buffer The Doppler buffer assembly is an option that plugs on to the modem interfac

SDM-650B Satellite Modem Configuration Rev. 5 3–41 Table 3-8. Jumper Selections Function Install Remove Clock Source Control By M&C JP8, J

Configuration SDM-650B Satellite Modem 3–42 Rev. 5 The formula for calculating the buffer depth is: Buffer Depth (bits) = Bit Rate (bit/s) x Max.

SDM-650B Satellite Modem Configuration Rev. 5 3–43 Figure 3-14. AS/3812 Doppler Buffer Daughter Card Pinouts on the 34-pin V.35 are: • “c”

Configuration SDM-650B Satellite Modem 3–44 Rev. 5 3.3.1 Buffer Setup The receive buffer allows for: • Plesiochronous buffering of two dissimila

SDM-650B Satellite Modem Configuration Rev. 5 3–45 Bit 1Bit 2Bit 3Bit 5Bit 6Bit 7Bit 1Bit 2Bit 3Bit 5Bit 6Bit 7Bit 4ErrorBit 1Bit 2Bit 3Bit 3Bit

Configuration SDM-650B Satellite Modem 3–46 Rev. 5 3.3.1.1 Buffer Size The depth of the receive buffer will depend upon four parameters: • Doppl

SDM-650B Satellite Modem Configuration Rev. 5 3–47 3.3.1.3 Plesiochronous The stability of station reference clocks is normally 10-11 that is der

SDM-8000 Satellite Modem Preface Rev. 5 v Customer Support Contact the EFData Customer Support Department for: • Product support • Information o

Configuration SDM-650B Satellite Modem 3–48 Rev. 5 3.3.1.5 Total Buffer Length The size of the buffer will be determined by the Doppler, plesiochr

SDM-650B Satellite Modem Configuration Rev. 5 3–49 3.4 Doppler Buffer Specification Buffer Size (bits) 512, 1024, 2048, 4096, 8192, 16384, 32768,

Configuration SDM-650B Satellite Modem 3–50 Rev. 5 3.6 Interface Clocking Options Clocking of the data from the terrestrial circuits to the satell

SDM-650B Satellite Modem Configuration Rev. 5 3–51 3.6.1.1 Master/Slave RS-422 or V.35 Refer to Figure 3-16 for the RS-422 or V.35 master/slave

Configuration SDM-650B Satellite Modem 3–52 Rev. 5 3.6.1.1.1 Modem Settings (Master) 1. TX-CLOCK: EXT. 2. Install JP10 and JP11 on buffer card (A

SDM-650B Satellite Modem Configuration Rev. 5 3–53 3.6.1.2 Master/Slave G.703 Refer to Figure 3-17 for the G.703 master/slave configuration. Not

Configuration SDM-650B Satellite Modem 3–54 Rev. 5 3.6.1.3 Master/Slave X.21 Refer to Figure 3-18 for the X.21 master/slave configuration. Figur

SDM-650B Satellite Modem Configuration Rev. 5 3–55 3.6.1.4 Master/Slave External Station Clock Figure 3-19 shows the master/slave external statio

Configuration SDM-650B Satellite Modem 3–56 Rev. 5 3.6.2 Master/Master This application is used where both earth stations have high stability cloc

SDM-650B Satellite Modem Configuration Rev. 5 3–57 3.6.2.1.1 Modem Settings (Master) • TX-CLOCK: EXT. • Install JP10 and JP11 on buffer card (AS