Comtech-ef-data SDM-300A Manuel d'utilisateur

Part Number MN/SDM300A.IOM Revision 6 SDM-300A Satellite Modem Installation and Operation Manual

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM vi5.4.6.8 Utility: Factory Set-Up...

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–6 SELECT:CONFIGURATIONCONFIGURATIONMODULATORDEMODULATORINTERFACELOCAL AUP

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–7 5.4 Opening Screen This screen is displayed whenever power is first a

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–8 5.4.1.1 FUNCTION SELECT: CONFIGURATION: MODULATOR CONFIGURATION MODUL

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–9 Upon entry, the current transmitter rate is displayed with the flashin

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–10 FUNCTION SELECT: CONFIGURATION: MODULATOR: TX-IF FREQUENCY TX-IF

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–11 FUNCTION SELECT: CONFIGURATION: MODULATOR: TX POWER LEVEL (CONDIT

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–12 FUNCTION SELECT: CONFIGURATION: MODULATOR: DIFF. ENCODER DIFF. E

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–13 FUNCTION SELECT: CONFIGURATION: MODULATOR: MODEM REFERENCE MODEM

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–14 5.4.1.2 FUNCTION SELECT: CONFIGURATION: DEMODULATOR CONFIGURATION DE

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–15 Upon entry, the current transmitter rate is displayed with the flashi

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM viiCHAPTER 9. FORWARD ERROR CORRECTION (OPTIONS) ...

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–16 FUNCTION SELECT: CONFIGURATION: DEMODULATOR: RX-IF FREQUENCY RX-IF

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–17 FUNCTION SELECT: CONFIGURATION: DEMODULATOR: RF LOOP BACK RF LOOP BA

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–18 FUNCTION SELECT: CONFIGURATION: DEMODULATOR: IF LOOP BACK IF LOOP BAC

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–19 FUNCTION SELECT: CONFIGURATION: DEMODULATOR: BER THRESHOLD BER THRES

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–20 FUNCTION SELECT: CONFIGURATION: DEMODULATOR: SWEEP RANGE SWEEP RAN

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–21 FUNCTION SELECT: CONFIGURATION: DEMODULATOR: RS DECODER (CONDITIO

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–22 5.4.1.3 FUNCTION SELECT: CONFIGURATION: INTERFACE CONFIGURATION INTE

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–23 FUNCTION SELECT: CONFIGURATION: INTERFACE: TX CLOCK PHASE TX CL

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–24 FUNCTION SELECT: CONFIGURATION: INTERFACE: BUFFER CLOCK (CONDITIO

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–25 FUNCTION SELECT: CONFIGURATION: INTERFACE: BUFFER SIZE (CONDITIONA

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM viii10.4.9 D&I Framing Formats...

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–26 FUNCTION SELECT: CONFIGURATION: INTERFACE: BUFFER CENTER BUFFER CENTE

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–27 FUNCTION SELECT: CONFIGURATION: INTERFACE: B-BAND LOOP BACK B-BAND L

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–28 FUNCTION SELECT: CONFIGURATION: INTERFACE: INTRFC LOOP BACK INTRFC LO

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–29 FUNCTION SELECT: CONFIGURATION: INTERFACE:LOOP TIMING LOOP TIMING

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–30 FUNCTION SELECT: CONFIGURATION: INTERFACE: RX DATA FAULT (CONDITIONAL)

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–31 FUNCTION SELECT: CONFIGURATION: INTERFACE:RX 2047 PATTERN (CONDITIONA

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–32 FUNCTION SELECT: CONFIGURATION: INTERFACE:RX CODING FORMAT (CONDITI

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–33 Examples: CHANNEL: TX-1 LEVEL = -5 dBm CHANNEL: TX-2 LEVEL = -

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–34 FUNCTION SELECT: CONFIGURATION: INTERFACE:DROP FORMAT (CONDITIONAL)

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–35 FUNCTION SELECT: CONFIGURATION: INTERFACE:INSERT FORMAT (CONDITION

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM ixCHAPTER 15. FLEX MUX ...

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–36 FUNCTION SELECT: CONFIGURATION: INTERFACE:DROP CHANNEL ASSIGNMENTS

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–37 FUNCTION SELECT: CONFIGURATION: INTERFACE:INSERT CHANNEL ASSIGNMEN

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–38 FUNCTION SELECT: CONFIGURATION: INTERFACE:ASYNC TX BAUD (CONDITIONA

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–39 FUNCTION SELECT: CONFIGURATION: INTERFACE: ASYNC TX LENGTH (CONDIT

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–40 FUNCTION SELECT: CONFIGURATION: INTERFACE:ASYNC TX STOP (CONDITIO

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–41 FUNCTION SELECT: CONFIGURATION: INTERFACE: ASYNC TX PARITY (CONDITION

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–42 5.4.1.4 FUNCTION SELECT: CONFIGURATION: LOCAL AUPC (CONDITIONAL) CO

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–43 FUNCTION SELECT: CONFIGURATION: LOCAL AUPC: NOMINAL POWER (CONDITIONA

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–44 FUNCTION SELECT: CONFIGURATION: LOCAL AUPC: MAXIMUM POWER (CONDITIONA

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–45 FUNCTION SELECT: CONFIGURATION: LOCAL AUPC: TRACKING RATE (CONDITIONA

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM x19.4.4 Differential Encoder...

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–46 FUNCTION SELECT: CONFIGURATION: LOCAL AUPC: REMOTE CL ACTION (CON

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–47 5.4.1.5 FUNCTION SELECT: CONFIGURATION: MUX (OPTIONAL/CONDITIONAL)

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–48 FUNCTION SELECT: CONFIGURATION: MUX:TRIBUTARY #N TRIBUTARY #N 204

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–49 Select the mode. If ASYNC is chosen, select the ASYNC FORMAT as well.

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–50 FUNCTION SELECT: CONFIGURATION: FLEX MUX: TX CHAN #1 MODE TX

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–51 FUNCTION SELECT: CONFIGURATION: FLEX MUX: TX CHAN #3 MODE TX C

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–52 FUNCTION SELECT: CONFIGURATION: FLEX MUX: TX CHAN #4 MODE TX CH

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–53 FUNCTION SELECT: CONFIGURATION: FLEX MUX: RX CHAN #1 MODE RX C

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–54 RECEIVE CHANNEL 3 MODE: ASYNC RS232, SYNC RS232, ASYNC RS422, SYNC

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–55 RECEIVE CHANNEL 4 DATA RATE: 0.6 to 64.0 kbps Note: DR is not dis

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM xi19.8 Interface Specifications...

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–56 SELECT:MONITORMONITORMONITORRAW BERCORRECTED BEREb/NoRECEIVED SIGNA

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–57 FUNCTION SELECT MONITOR:CORRECTED BER CORRECTED BER 4.0 E-3 Co

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–58 FUNCTION SELECT MONITOR:RECEIVE SIGNAL RECEIVE SIGNAL -45.0dBm R

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–59 FUNCTION SELECT MONITOR:FRAME ERRORS (CONDITIONAL) FRAME ERRORS n.

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–60 SELECT:FAULTS/ALARMSFAULTS/ALARMSFAULTS/ALARMSMODULATORDEMODULATORTX

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–61 FUNCTION SELECT: FAULTS/ALARMS: MODULATOR MODULATOR ---------

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–62 FUNCTION SELECT: FAULTS/ALARMS: TX INTERFACE TX INTERFACE ---+

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–63 FUNCTION SELECT: FAULTS/ALARMS: RX INTERFACE RX INTERFACE ---

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–64 FUNCTION SELECT: FAULTS/ALRMS: COMMON COMMON ------- B

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–65 SELECT:STORED FLTS/ALMSSTORED FLTS/ALMSSTORED FLTS/ALMSMODULATORDEMOD

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM xii Figures Figure 1-1. Block Diagram ...

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–66 FUNCTION SELECT: STORED FLTS/ALMS: MODULATOR MODULATOR X STORED TI

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–67 FUNCTION SELECT: STORED FLTS/ALMS: RX INTERFACE RX INTERFACE X

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–68 FUNCTION SELECT: STORED FLTS/ALMS:BACKWARD ALRMS (CONDITIONAL) B

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–69 SELECT:REMOTE AUPCREMOTE AUPCREMOTE AUPCCONFIGURATIONAUPC ENABLEB-BAN

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–70 FUNCTION SELECT: REMOTE AUPC: CONFIGURATION (CONDITIONAL) REMOTE A

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–71 FUNCTION SELECT: REMOTE AUPC: CONFIGURATION:B-BAND LOOP BACK (CON

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–72 FUNCTION SELECT: REMOTE AUPC:MONITOR (CONDITIONAL) REMOTE AUPC MONI

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–73 SELECT:UTILITYUTILITYMODULATORDEMODULATORINTERFACESYSTEMMODEM TYPEFAC

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–74 5.4.6 FUNCTION SELECT:UTILITY FUNCTION SELECT UTILITY 5.4.6.1

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–75 5.4.6.3 FUNCTION SELECT: UTILITY:MODULATOR UTILITY MODULATOR Se

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM xiiiFigure 10-1. IBS Interface Block Diagram ...

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–76 • A flashing cursor is displayed on the first character of the codin

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–77 FUNCTION SELECT: UTILITY: MODULATOR:MODULATOR TYPE MODULATOR TYPE IN

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–78 FUNCTION SELECT: UTILITY: MODULATOR:MOD SPECTRUM MOD SPECTRUM NORMA

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–79 FUNCTION SELECT: UTILITY: MODULATOR:TX IESS-315 MODE (CONDITIONAL)

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–80 5.4.6.4 FUNCTION SELECT: UTILITY: DEMODULATOR UTILITY DEMODULATOR

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–81 • A flashing cursor is displayed on the first character of the codi

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–82 FUNCTION SELECT: UTILITY: DEMODULATOR:DEMODULATOR TYPE (CONDITIONAL

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–83 FUNCTION SELECT: UTILITY: DEMODULATOR: RX BPSK ORDERING RX BPSK OR

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–84 IMPORTANT Conditional: Only available when the 8PSK option is selected

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–85 FUNCTION SELECT: UTILITY: DEMODULATOR: RX MODE RX MODE CONTINU

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM xiv Tables Table 1-1. Options ...

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–86 FUNCTION SELECT: UTILITY: INTERFACE: RX OVERHEAD TYPE RX OVERHE

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–87 FUNCTION SELECT: UTILITY: INTERFACE: FRAMING STRUCTURE FRAMING

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–88 Upon entry, the framing type (T1 or E1) is displayed on Line 1. The fr

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–89 IMPORTANT Conditional: This menu is displayed if the optional Overhea

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–90 FUNCTION SELECT: UTILITY: INTERFACE: ASYNC TX TYPE (CONDITIONA

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–91 IMPORTANT Conditional: This selection is available only when Modem Ty

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–92 5.4.6.6 FUNCTION SELECT: UTILITY:SYSTEM UTILITY SYSTEM Select inf

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–93 FUNCTION SELECT: UTILITY: SYSTEM: REMOTE ADDRESS REMOTE ADDRESS 1

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–94 FUNCTION SELECT: UTILITY: SYSTEM:YEAR DISPLAY YEAR DISPLAY 2 - DIG

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–95 FUNCTION SELECT: UTILITY: SYSTEM: LAMP TEST LAMP TEST ?? PRESS EN

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM xv Table 11-6. Local EIA-485 (4-Wire) to Remote EIA-232...

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–96 FUNCTION SELECT: UTILITY: SYSTEM: BOOT FIRMWARE BOOT FIRMWARE FW/NN

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–97 FUNCTION SELECT: UTILITY: SYSTEM: DISPLAY CONTRAST DISPLAY CONTRAS

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–98 FUNCTION SELECT: UTILITY: SYSTEM: DEMO DEMO MODE ON CAUTION Enabl

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–99 5.4.6.7 FUNCTION SELECT: UTILITY: MODEM TYPE UTILITY MODEM TYPE S

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–100 When the modem is changed from one type of operation to another, it i

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–101 FUNCTION SELECT: UTILITY: MODEM TYPE: MODEM EMULATION MODEM EMULA

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–102 5. The revision emulation feature does not affect some interface cha

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–103 FUNCTION SELECT: UTILITY: MODEM TYPE:CARD #1 TYPE CARD #1 TYPE OV

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–104 FUNCTION SELECT: UTILITY: MODEM TYPE: CARD #1 OPTIONS CARD #1 OPTI

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–105 FUNCTION SELECT: UTILITY: MODEM TYPE: CARD #3 OPTIONS CARD #3 OPT

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM xvi This page is intentionally left blank.

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–106 FUNCTION SELECT: UTILITY: MODEM TYPE: CARD #1 SERIAL # CARD #1 SE

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–107 FUNCTION SELECT: UTILITY: MODEM TYPE: CONFIGURATION CODE - MODEM

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–108 FUNCTION SELECT: UTILITY: MODEM TYPE:CONFIGURATION CODE – CARD #

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–109 Entering this code enables the corresponding modem option. To purcha

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–110 5.5 Custom Modem Defaults Note: The following parameters do not reve

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–111 Table 5-3. Custom Modem Defaults (Continued) Configuration Local AUP

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–112 Table 5-3. Custom Modem Defaults (Continued) Utility Modulator Dem

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–113 Table 5-3. Custom Modem Defaults (Continued) Utility System Time 12

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–114 This page is intentionally left blank.

6-1Chapter 6. Modem Type 6.1 Modem Types Refer to Table 6-1 for configuring the modem to the following types of operation. Each type allows the user

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM xvii About this Manual This manual provides installation and operation information for t

SDM-300A Satellite Modem Revision 6 Modem Types MN/SDM300A.IOM 6-26.1.1 IDR Operation To operate the modem in the IDR configuration, the fol

SDM-300A Satellite Modem Revision 6 Modem Types MN/SDM300A.IOM 6-36.1.2 IBS Operation To operate the modem in the IBS configuration, the foll

SDM-300A Satellite Modem Revision 6 Modem Types MN/SDM300A.IOM 6-46.1.3 D&I Operation To operate the modem in the Drop & Insert conf

SDM-300A Satellite Modem Revision 6 Modem Types MN/SDM300A.IOM 6-56.1.4 ASYNC/AUPC Operation To operate in the Asynchronous/AUPC configuratio

SDM-300A Satellite Modem Revision 6 Modem Types MN/SDM300A.IOM 6-6Asynchronous Overhead with AUPC is a closed network application that gives t

SDM-300A Satellite Modem Revision 6 Modem Types MN/SDM300A.IOM 6-7Table 6-7. Comtech EFD Closed Network Parameter Settings Parameter Front Pa

SDM-300A Satellite Modem Revision 6 Modem Types MN/SDM300A.IOM 6-86.1.7 SDM-100 Emulation Operation The SDM-100 Emulation feature of the mod

SDM-300A Satellite Modem Revision 6 Modem Types MN/SDM300A.IOM 6-96.1.8 SDM-6000 Emulation Operation The SDM-6000 Emulation allows the SDM-30

SDM-300A Satellite Modem Revision 6 Modem Types MN/SDM300A.IOM 6-106.2 Reed-Solomon Modes Reed-Solomon polynomial is compatible with Intelsat

SDM-300A Satellite Modem Revision 6 Modem Types MN/SDM300A.IOM 6-11Notes: 1. For IESS-308/309 compliant operation, it is necessary to enable I

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM xviii Metric Conversion Metric conversion information is located on the insid

SDM-300A Satellite Modem Revision 6 Modem Types MN/SDM300A.IOM 6-12 This page is intentionally left blank.

7-1Chapter 7. Clocking Options 7.1 Clocking Options Clocking of the data from the terrestrial equipment to the satellite (and vice versa) will depe

SDM-300A Satellite Modem Revision 6 Clocking Options MN/SDM300A.IOM 7-2 Step Procedure 1 Select TX TERRESTRIAL for the TX clock source when

SDM-300A Satellite Modem Revision 6 Clocking Options MN/SDM300A.IOM 7-3TXCLOCK = TX TERRESTRIALTXCLOCK = TX TERRESTRIALTRANSMITTRANSMITINTERNAL

SDM-300A Satellite Modem Revision 6 Clocking Options MN/SDM300A.IOM 7-4TXCLOCK = TX TERRESTRIALSLAVETXCLOCK = TX TERRESTRIALTRANSMITTRANSMITIN

SDM-300A Satellite Modem Revision 6 Clocking Options MN/SDM300A.IOM 7-5MASTERTX CLOCK = TX TERRESTRIALCLOCKRECOVERYTXCLOCK + TX TERRESTRIALDATA

SDM-300A Satellite Modem Revision 6 Clocking Options MN/SDM300A.IOM 7-6TXCLOCK + TX TERRESTRIALTX CLOCK = TX TERRESTRIALTRANSMITTXTERRESTRIALT

SDM-300A Satellite Modem Revision 6 Clocking Options MN/SDM300A.IOM 7-77.1.5 D&I G.703 Master/Master In the D&I configuration, the most

SDM-300A Satellite Modem Revision 6 Clocking Options MN/SDM300A.IOM 7-8CLOCKRECOVERYCLOCKRECOVERYCLOCKRECOVERYTXCLOCK = TX TERRESTRIALTXCLOCK

Revision 6 8–1Chapter 8. Buffering 8.1 Buffering The purpose of a receive buffer is two reasons: • Plesiochronous buffering of two dissimilar

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM xixELECTRICAL SAFETY The SDM-300A Satellite Modem has been shown to comply with the foll

SDM-300A Satellite Modem Revision 6 Buffering SDM300A.IOM 8–2 BIT 1BIT 2BIT 3BIT 4BIT 5BIT 6BIT 7BIT 1BIT 2BIT 3BIT 5BIT 6BIT 7ERRORINTERFACE1) I

SDM-300A Satellite Modem Revision 6 Buffering SDM300A.IOM 8–3 SATELLITEMOTIONANDORBITALINCLINATIONSATELLITENOMINALPOSITIONNSGEO-SYNCHRONOUSEQUATO

SDM-300A Satellite Modem Revision 6 Buffering SDM300A.IOM 8–48.2 Buffer Size Refer to Table 8-1. The depth of the receive buffer will depen

SDM-300A Satellite Modem Revision 6 Buffering SDM300A.IOM 8–58.4 Plesiochronous The stability of station reference clocks is normally 1 x 10-12 (

SDM-300A Satellite Modem Revision 6 Buffering SDM300A.IOM 8–68.5 Frame/Multiframe Length The depth of the receive buffer required has been discus

SDM-300A Satellite Modem Revision 6 Buffering SDM300A.IOM 8–7Table 8-1. Minimum Doppler/Plesiochronous Buffer Capacity Requirements Satellite Or

SDM-300A Satellite Modem Revision 6 Buffering SDM300A.IOM 8–8 This page is intentionally left blank.

9–1 Chapter 9. Forward Error Correction (Options) 9.1 Introduction As standard, the SDM-300A is equipped with four Forward Error Correction (FEC) enc

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–2 9.2 Viterbi The combina

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–3 9.3 Sequential Although

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM xxInstallation The installation and connection to the line supply must be made in compli

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–4 9.4 Reed-Solomon Outer

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–5 9.4.1 Closed Network Mo

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–6 9.5 Trellis Coding (FAS

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–7 9.6 Turbo Product Cod

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–8 Table 9-1. Turbo Produc

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–9 Notes: 1. The occupi

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–10 The second problem inhe

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–11 ‘3/4 Rate‘1/2 Rate‘7/8

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–12 ‘3/4 Rate‘1/2 Rate‘7/8

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–13 10-410-310-510-6BER10-

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM xxiEMC (Electromagnetic Compatibility) In accordance with European Directive 89/336/EEC,

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–14 10-410-310-510-6BER10

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–15 10-410-310-510-6BER10-

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–16 ‘3/4 Rate‘1/2 Rate‘7

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–17 Figure 9-7. 8-

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–18 ‘3/4 Rate‘1/2 Rate‘7/8

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–19 ‘1/1 RateSpecification

SDM-300A Satellite Modem Revision 6 Forward Error Correction (Options) MN/SDM300A.IOM 9–20 1.0E-101.0E-091.0E-081

10–1Chapter 10. Open Network Operations 10.1 Introduction This chapter summarizes the functionality and specifications of the various Open Network

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–2 The front panel interface provides four clock selections clocking

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–3 Figure 10-1. IBS Interfa

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM xxii Warranty Policy This Comtech EF Data product is warranted against defects in materi

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–4 10.2.1 IBS Specifications Table 10-1. IBS Specifications Paramete

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–5 10.2.2 IBS Modem Defaults Table 10-2. IBS Modem Defaults Modulato

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–6 10.2.3 IBS Primary Data Interfaces • Accepts and outputs primary

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–7 10.3 Intermediate Data Rate (IDR) IDR operation adds 96 kbps over

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–8 The AIS is detected in the receive data and reported to the M&

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–9 Figure 10-2. IDR Int

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–10 10.3.1 IDR Specifications Table 10-3. IDR Specifications Primary

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–11 10.3.2 IDR Modem Defaults Table 10-4. IDR Modem Defaults Modulat

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–12 10.3.3 IDR Primary Data Interfaces When configured for IDR opera

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–13 10.4 Drop and Insert (D&I) Note: If required, refer to Chapte

1–1 Chapter 1. Introduction The SDM-300A is a complete, self-contained unit in a standard, one-rack unit (1 RU), 19-inch (48 cm), rack-mountable encl

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–14 10.4.1 D&I Specifications Table 10-5. D&I Specifications

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–15 Table 10-5. D&I Specifications (Continued) Parameter Specific

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–16 TRANSMIT SECTIONBW ALARMALARMMONITORSALARMMONITORSRECEIVE SECTION

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–17 Figure 10-4. D&I with Asynchronous Overhead Data Flow

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–18 10.4.2 Theory of Operation The main features of the D&I opti

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–19 As a test mode, the transmit data can be replaced with a 2047 patt

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–20 Problems occurring on any of the selected clocks will cause the m

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–21 Figure 10-5. E1 Framing Formats

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–22 Figure 10-6. T1 Framing Formats

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–23 10.4.10 D&I Modem Defaults Table 10-6. D&I Modem Defaults

SDM-300A Satellite Modem Revision 6 Introduction MN/SDM300A.IOM 1–2 Refer to Figure 1-1for a system block diagram. M&CAUXCIRCUITSSAT CLKFAULTRE

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–24 Notes: 1. When selecting E1_CAS or E1_CCS D&I data format,

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–25 10.5 G.703 Note: If required, refer to Chapter 3 for installation

SDM-300A Satellite Modem Revision 6 Open Network Operations MN/SDM300A.IOM 10–26 This page is intentionally left blank.

11–1 Chapter 11. Asynchronous Interface/AUPC 11.1 Asynchronous Interface/AUPC The asynchronous (ASYNC) interface option provides the interface for

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–2 ASYNC overhead is a 1/15 rate overhead channel composed of the followin

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–3 Figure 11-1. ASYNC/AUPC Block Diagram G.703V.35TERR DA

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–4 11.2 AUPC There are two modes of AUPC location: AUPC between two modem

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–5 With Local AUPC On, set modems (A and B), if modem A loses carrier:

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–6 11.2.1.1 Remote AUPC This feature allows the user to monitor and contr

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–7 Notes: 1. Comtech EF Data does not recommend increasing the power

SDM-300A Satellite Modem Revision 6 Introduction MN/SDM300A.IOM 1–3 1.1 Overview The SDM-300A Satellite Modem is a high performance, full-duplex, di

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–8 11.3.3 MUX Operation The MUX receives terrestrial and ASYNC data from t

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–9 The Doppler buffer receives data clocked by the overhead clock from the

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–10 11.3.8 Non-ASYNC Operation The ASYNC interface has pass-through capabi

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–11 11.4.1 Valid ASYNC Baud Rates The ASYNC baud rates are limited by the

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–12 11.4.3 ASYNC Remote Operation Remote modems can be controlled over th

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–13 WYSEREMOTE TERMINAL(OR EQUIVALENT)ASYNC INTERFACE ASYNC INTERFACEV.3

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–14 11.4.3.1 Configuration #1 (Local EIA-232 to Remote EIA-232) Table 11

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–15 11.4.3.2 Configuration #2 (Local EIA-232 to Remote EIA-485 [4-Wire])

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–16 11.4.3.3 Configuration #3 (Local EIA-232 to Remote EIA-485 [2-Wire])

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–17 11.4.3.4 Configuration #4 (Local EIA-485 [4-Wire] to Remote EIA-232)

Filename: T_ERRATA 1 Errata A Comtech EF Data Documentation Update Subject: Appendix A. Remote Control Operation Date: June 21, 2005 Document: SD

SDM-300A Satellite Modem Revision 6 Introduction MN/SDM300A.IOM 1–4 1.1.3 Description of Interface Functions An interface consists of a device havi

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–18 11.4.3.5 Configuration #5 (Local EIA-485 [4-Wire] to Remote EIA-485

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–19 11.4.3.6 Configuration #6 (Local EIA-485 [4-Wire] to Remote EIA-485

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–20 11.4.3.7 Configuration #7 (Local EIA-485 [2-Wire] to Remote EIA-232)

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–21 The local end cable connects the 25-pin female ASYNC connector (on eit

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–22 11.4.3.8 Configuration #8 (Local EIA-485 [2-Wire] to Remote EIA-485

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–23 The local end cable connects the 25-pin female ASYNC connector (on eit

SDM-300A Satellite Modem Revision 6 ASYNC/AUPC Interface MN/SDM300A.IOM 11–24 11.4.4 ASYNC/AUPC Modem Defaults Table 11-11. ASYNC/AUPC Modem Defa

12–1 Chapter 12. Asymmetrical Loop Timing 12.1 Introduction Asymmetrical Loop Timing is the same timing method that is designed into the SDM-650B

SDM-300A Satellite Modem Revision 6 Asymmetrical Loop Timing MN/SDM300A.IOM 12–2 Notes: 1. The clock inputs are as follows: a. ≥ 64 kHz shall be d

SDM-300A Satellite Modem Revision 6 Asymmetrical Loop Timing MN/SDM300A.IOM 12–3 PLLDDSTXDTXCEXTREFINTRXCS2S1MCSTTTTXDS4S3OUTPUT Clock Selection S

SDM-300A Satellite Modem Revision 6 Introduction MN/SDM300A.IOM 1–5 The modem is used in Single Channel Per Carrier (SCPC) applications within the

SDM-300A Satellite Modem Revision 6 Asymmetrical Loop Timing MN/SDM300A.IOM 12–4 BUFPLLSATINTRXDMCEXTTERRTTRTDDSEXTREFINTRXDRXC Note: PLL will be byp

SDM-300A Satellite Modem Revision 6 Asymmetrical Loop Timing MN/SDM300A.IOM 12–5 Example: Master/Slave Clocking Setup: 1. Master site has a 10 MHz

SDM-300A Satellite Modem Revision 6 Asymmetrical Loop Timing MN/SDM300A.IOM 12–6 This page is intentionally left blank.

13–1 Chapter 13. Duplex-Reed Solomon Card Option 13.1 Duplex Reed-Solomon Card Option IMPORTANT Refer to Chapter 3, paragraph 3.6 for removal an

SDM-300A Sattellite Modem Revision 6 Duplex Reed-Solomon Code FEC MN/SDM300A.IOM 13–2 This pagfe is intentionally left blank.

14–1 Chapter 14. 8-Channel Multiplexer 14.1 Introduction The multiplexer (MUX) system (Figure 14-1) provides for 1 to 8 tributary channels to be m

SDM-300A Sattellite Modem Revision 6 8-Channel Multiplexer MN/SDM300A.IOM 14–2 Figure 14-1. 8-Channel Multiplexer PCB (AS/5985) 14.2 Installation

SDM-300A Sattellite Modem Revision 6 8-Channel Multiplexer MN/SDM300A.IOM 14–3 Figure 14-2. 8-Channel Multiplexer Installation

SDM-300A Sattellite Modem Revision 6 8-Channel Multiplexer MN/SDM300A.IOM 14–4 14.3 8-Channel Multiplexer Specifications System Specification Numb

SDM-300A Sattellite Modem Revision 6 8-Channel Multiplexer MN/SDM300A.IOM 14–5 14.4 8-Channel Multiplexer 100-Pin Connector (J10) Pin # Circuit

SDM-300A Satellite Modem Revision 6 Introduction MN/SDM300A.IOM 1–6 1.2 Options Table 1-1. Options Option Decsription & Comments 50Ω IF Impedan

SDM-300A Sattellite Modem Revision 6 8-Channel Multiplexer MN/SDM300A.IOM 14–6 This page is intentionally left blank.

15–1 Chapter 15. Flex Mux 15.1 Introduction Flex Mux (Figure 15-1) PCB is offered as a factory or field installable interface. Simultaneous operat

SDM-300A Sattellite Modem Revision 6 Flex Mux MN/SDM300A.IOM 15–2 User control and status monitoring of the unit via the front panel or the EIA-232

SDM-300A Sattellite Modem Revision 6 Flex Mux MN/SDM300A.IOM 15–3 Table 15-1. System Specification System Specification Number of Channels 1 to 4,

SDM-300A Sattellite Modem Revision 6 Flex Mux MN/SDM300A.IOM 15–4 Table 15-2. Multiplexer Specification Multiplexer Specific Specifications Channel

SDM-300A Sattellite Modem Revision 6 Flex Mux MN/SDM300A.IOM 15–5 Table 15-3. Demultiplexer Specific Specifications Demultiplexer Specific Specific

SDM-300A Sattellite Modem Revision 6 Flex Mux MN/SDM300A.IOM 15–6 15.2 Installation The following tool is required to install the Flex Mux PCB: Des

SDM-300A Sattellite Modem Revision 6 Flex Mux MN/SDM300A.IOM 15–7 Figure 15-2. Flex Mux Multiplexer Installation

SDM-300A Sattellite Modem Revision 6 Flex Mux MN/SDM300A.IOM 15–8 15.3 Flex MUX 50-Pin Connector Definitions Table 5-4. Flex Mux 50-Pin Connector

16–1 Chapter 16. FAST Accessible Options 16.1 Introduction 16.2 FAST Accessible Options Comtech EF Data’s FAST system allows immediate implementation

SDM-300A Satellite Modem Revision 6 Introduction MN/SDM300A.IOM 1–7 1.2.1 Factory-Installed Options Consult a Comtech EF Data Customer Support repre

SDM-300A Satellite Modem Revision 6 FAST Accessible Options MN/SDM300.IOM 16–2 Table 16-1. FAST Options and Required Configurations Hardware Single

SDM-300A Satellite Modem Revision 6 FAST Accessible Options MN/SDM300A.IOM 16–3 16.3 FAST System Theory FAST is an enhancement feature available onl

SDM-300A Satellite Modem Revision 6 FAST Accessible Options MN/SDM300.IOM 16–4 16.4.1.2 Select Features: Step Procedure 1 Use [←] and [→] to select

SDM-300A Satellite Modem Revision 6 FAST Accessible Options MN/SDM300A.IOM 16–5 16.4.1.3 Entering Access Codes from the Front Panel Step Procedure

SDM-300A Satellite Modem Revision 6 FAST Accessible Options MN/SDM300.IOM 16–6 16.4.1.5 Verify Upgrade Step Procedure 1 Press [CLEAR] to return t

17–1 Chapter 17. FLASH Upgrading 17.1 Introduction IMPORTANT Contact Comtech EF Data Customer Support or return the modem to Comtech EF Data or it’s

SDM-300A Satellite Modem Revision 6 Flash Upgrading MN/SDM300.IOM 17–2 This page is intentionally left blank.

18–1 Chapter 18. Troubleshooting 18.1 System Checkout CAUTION This equipment contains parts and assemblies sensitive to damage by ESD. Use ESD preca

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–2 18.2 Interface Checkout Use the following pro

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–3 18.2.1 Modulator Checkout Use the followi

SDM-300A Satellite Modem Revision 6 Introduction MN/SDM300A.IOM 1–8 1.3 Description of FAST Options The modem has a variety of hardware options ava

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–4 Table 18-1. Conversion to S/N and Eb/N0 Char

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–5 Figure 18-2. Typical Output Spectrum (with

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–6 18.2.2 Demodulator Checkout Use the following

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–7 WITH NOISE WITHOUT NOISE Figure 18-4.

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–8 18.3 Fault Isolation The modem’s design allow

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–9 Table 18-2. SDM-300A Fault Tree TX IF OUTPU

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–10 Table 18-2. SDM-300A Fault Tree (Continued)

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–11 Table 18-2. SDM-300A Fault Tree (Continued)

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–12 18.3.2 Faults/Alarms Display General fault,

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–13 18.3.3.1 Modulator Faults Fault/Alarm Possi

SDM-300A Satellite Modem Revision 6 Introduction MN/SDM300A.IOM 1–9 1.4 Compatibility The SDM-300A is functionally compatible with many Comtech EF D

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–14 18.3.3.2 Demodulator Faults Fault/Alarm Pos

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–15 18.3.3.3 Transmit Interface Faults Fault/Ala

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–16 18.3.3.4 Receive Interface Faults Fault/Alar

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–17 Fault/Alarm Possible Problem and Action DEM

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–18 18.3.3.6 Backward Alarms Faults Fault/Alarm

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–19 18.3.4 Remove and Replace Power Supply WAR

SDM-300A Satellite Modem Revision 6 Troubleshooting MN/SDM300A.IOM 18–20 18.3.5 Remove and Replace the Fan Assembly

19–1 Chapter 19. Specifications 19.1 Specifications Summary Table 19-1. Specification Summary Parameter Specification Operating Frequency Range 50

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–2 Table 19-1. General Specification (Continued) Parameter Specification Forwa

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–3 19.2 Environmental and Physical Specifications Table 19-2. Environmental an

SDM-300A Satellite Modem Revision 6 Introduction MN/SDM300A.IOM 1–10 1.5.3 UB-54 Breakout Panel The UB-54 breakout panel functions with the MUX opt

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–4 19.3 Remote Control Specifications Table 19-3. Remote Control Specifications

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–5 19.4 Modulator Specifications Table 19-4. Modulator Specification Parameter

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–6 Table 19-5. Modulator Digital Data Rate (Continued) Data Rate Range Modu

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–7 19.4.2 Modulation and Encoding Types Table 19-6 shows combinations of modulat

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–8 19.4.3 Scrambling Types The operator can select one of the following scrambli

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–9 19.4.7 Transmit Frequency (IF) The range of the output IF spectrum is selecte

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–10 19.4.11 Transmit IF Output Switch When set to Off, no signal present at the

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–11 19.4.17 Transmit IF Test Modes Select from the following TX IF test modes.

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–12 19.5 Demodulator Specifications 19.5.1 Digital Data Rate The digital data r

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–13 Table 19-7. Demodulator Digital Data Rate (Continued) Data Rate Range M

1–11 Table 1-4. Data Interface Connector (J8) Matrix Electrical Interface Mechanical Connector Type RS-232 RS-422 V.35 G.703 Other 25-Pin D, F

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–14 19.5.2 Demodulation and FEC Decoding Types Table 19-8 shows combinations of

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–15 19.5.3 Descrambling Types The operator can select one of the following descr

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–16 19.5.6 Deinterleaver (Reed-Solomon Codec) • QPSK - Depth 4 (IBS, IDR, D&a

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–17 19.5.12 Demodulator IF Input Shape The modem can be set to match any of the

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–18 19.6.1 Performance with Noise, Viterbi Decoder, and Open Network Mode Tabl

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–19 19.6.3 Performance with Noise, Viterbi Decoder, and Reed-Solomon (Optional

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–20 19.6.5 Performance with Noise, 1544 kbps and Sequential Decoder (Optional)

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–21 19.6.7 8-PSK Performance with Noise and With/Without Reed-Solomon Table 19-

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–22 19.6.9 Performance with Noise, Uncoded (1/1) BPSK, QPSK, and Offset QPSK T

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–23 19.7 Acquisition Time Refer to Table 19-20for acquisition time. Table 19-20

SDM-300A Satellite Modem Revision 6 Introduction MN/SDM300A.IOM 1–12 Table 1-6. SDM-300A Spares/Accessories Part No. Description Comments KT/800

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–24 19.7.3 AGC Output A programmable DC output, proportional to the receive sign

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–25 19.8.2.1 Transmit Clock Switching Due to Failure of Selected Clock The mode

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–26 19.8.2.6 Doppler Tracking Performance The modem tracks the Doppler shown bel

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–27 19.8.2.12 Receive Doppler/Plesiochronous Buffer Size The RX Doppler buffer s

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–28 The following interface types are available through the optional 50-pin data

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–29 19.9.3 V.35 Specification V.10, V.11 Specification, Circuit Supported V.35

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–30 19.9.4 EIA-422/EIA-449 MIL-188-114A Specification EIA-422/EIA-449 MIL-188-1

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–31 19.9.5 G.703 (Optional with Overhead Card) G.703 Specification Primary Da

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–32 19.10 System Specifications 19.10.1 Loopback Modes The operator can select o

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–33 19.10.3 Remote Control All modem functions can be controlled remotely throug

SDM-300A Satellite Modem Revision 6 Introduction MN/SDM300A.IOM 1–13 1.7 New in this Release This manual was reformatted in accordance with Comte

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–34 19.10.6 Modem Emulation Modes The modem has the ability to emulate the remot

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–35 19.11 Dimenionsal Envelope All dimensions are in English units (centimeter

SDM-300A Satellite Modem Revision 6 Specifications MN/SDM300A.IOM 19–36 The following figure represents the SDM-300A dimensional outline post-1999.

A–1 Appendix A. Remote Control Operation This appendix describes the remote control operation of the SDM-300A. • Firmware number: FW/6535-1AP • Soft

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–2 A.2.1 Start Character A single character precedes all messages tr

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–3 A.3 Commands/Responses Format The command/response portion of th

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–4 A.5 Modulator Configuration Commands Modulator Frequency Comman

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–5 Modulator Rate Variable Assignment & Selection (Selects & s

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–6 Modulator Encoder Type Command: Response: Status: Response: <add

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–7 TX 8PSK 2/3 IESS-310 Operation Command: Response: Status: Response

Filename: T_ERRATA 1 Errata B Comtech EF Data Documentation Update Subject: Correct RS reference in 4.1.1 Remote Connector and Pinouts (J6) Date:

SDM-300A Satellite Modem Revision 6 Introduction MN/SDM300A.IOM 1–14 This page is intentionally left blank.

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–8 A.6 Demodulator Configuration Commands Set Demodulator Frequenc

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–9 Descramble Enable Command: Response: Status: Response: <add/DE_x

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–10 Bit Error Rate Threshold Command: Response: Status: Response: <

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–11 RX 8PSK 2/3 IESS-310 Operation Command: Response: Status: Respons

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–12 External Clock-Reference Frequency Command: Response: Status: Res

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–13 Interface Buffer Size Buffer size programming is supported in two

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–14 Interface Read Error Select Command: Response: Status: Response: &

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–15 Drop Data Format Command: Response: Status: Response: <add/DDF_

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–16 Bulk Drop Channels Assignment Command: Response: Status: Response:

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–17 Bulk Insert Channels Assignment Command: Response: Status: Respons

2–1 Chapter 2. Functional Description 2.1 Description of Monitor and Control (M&C) The M&C monitors the modem and provides configuration upda

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–18 ASYNC Transmit Channel Stop Bits Command: Response: Status: Respon

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–19 Receive Data Phase Command: Response: Status: Response: <add/R

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–20 A.8 System Configuration Commands Time Of Day Command: Respons

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–21 Recall Modem Config. Command: Response: <add/RMC_n'cr&apos

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–22 A.9 Automatic Uplink Power Control (AUPC) A.9.1 Local Modem AU

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–23 AUPC Maximum Tracking Rate Command: Response: Status: Response: &l

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–24 Remote Interface Read Error Status Command: Response: Example: Co

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–25 Mux Tributary Async Format Command: Response: Status: Response: &l

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–26 TX Channel #4 Enable Command: Response: Status: Response: <add/

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–27 RX Channel #3 Enable Command: Response: Status: Response: <add

SDM-300A Satellite Modem Revision 6 Functional Description MN/SDM300A.IOM 2–2 MODEM11 MHzCLOCKIC BUS2RAM ANDREALTIMECLOCKROM(M&C,BULK,BOOT)FAULT

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–28 A.12 Modulator Configuration Status Modulator Config. Status Co

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–29 Modulator/ Coder Config. Program Status Command: Response: <ad

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–30 BW_TX4_nnn'cr' (Note 2) TXDR_xxxxxx'cr' TOBR_nn

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–31 MTIT_6_yyyyy'cr' (Note 5) MTCP_6_yyy'cr' (Note

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–32 A.13 Demodulator Configuration Status Demodulator Config. Status

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–33 Demod/ Decoder Config. Program Status Command: Response: <add/

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–34 DSR_xxx’cr’ RSDE_xxx’cr’ BW_RX1_nnn’cr’ (Note 2) BW_RX2_nnn’cr’ (No

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–35 A.14 Interface Configuration Status Interface Config. Status Com

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–36 TCCL_n'cr' (Note 5) TCSB_n'cr' (Note 5) TOCP_xx

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–37 MTDP_5_yyy'cr' (Note 7) MTMD_5_yyyyy'cr' (Note

SDM-300A Satellite Modem Revision 6 Functional Description MN/SDM300A.IOM 2–3 The heart of the M&C card is the Dallas 80C310 microcontroller ope

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–38 the current configuration of the interface. Additional configuratio

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–39 Demodulator Status Command: Response: <add/DS_'cr' &

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–40 Common Equipment Status Command: Response: <add/CES_'cr&

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–41 A.15 Error Performance Status Raw BER Command: Response: <a

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–42 Corrected BER Log Command: Response: Examples: <add/CBEL_&apos

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–43 Interface Read Error Status Command: Response: <add/IRES_'

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–44 Modulator Rate Status Command: Response: <add/MR_'cr'

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–45 Interface Buffer Fill Status Command: Response: <add/IBFS_&apos

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–46 Modulator Stored Faults Command: Response: <add/MSF_#'cr&

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–47 Interface Receive Side Stored Faults Command: Response: <add/I

SDM-300A Satellite Modem Revision 6 Functional Description MN/SDM300A.IOM 2–4 2.1.2 Remote Baud Rate The remote communications baud rate and parity

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–48 A.17 Bulk Consolidated Analog Status Bulk Consol. Analog Status

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–49 A.18 Bulk Consolidated Status This command causes bulk modem sta

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–50 11 12 13 14 15 16 17 18 19 20 21 22 23

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–51 25 26 27 28 29 30 31 32 33 34 35 36 37

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–52 40 41 42 43 44 45 46 47 48 49 50 51 5

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–53 (Note 1) (Note 2) (Note 1) (Not

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–54 (Note 5) (Note 5) (Note 5) (Note 5) (Note 6

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–55 (Note 3) (Note 4) (Note 3) (Note 4) (Note 3) (Note 4)

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–56 (Note 16) (Note 16) (Note 15) (Note 15) 99 1

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–57 (Note 8) (Note 9) (Note 8) (Note 8) 113

SDM-300A Satellite Modem Revision 6 Functional Description MN/SDM300A.IOM 2–5 2.2 Description of the Modulator The modulator provides PSK modulated

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–58 (Note 10) (Note 8) (Note 11) (Note 11) (Note 11) (Note 8

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–59 (Note 14) (Note 14) (Note 17) 139 140 141 RX Flex Mux C

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–60 A.19 Bulk Consolidated Status Faults Bulk Consoli-dated Status

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–61 Bit 6 = 1 always. Bit 5 = IF Synthesizer Lock. Bit 4 = reserved. Bi

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–62 Bit 5 = Insert fault. Bit 4 = reserved. Bit 3 through Bit 0 = Binar

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–63 Bit 4 = +5V power supply. Bit 3 = reserved. Bit 2 = +12V power supp

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–64 A.20 Miscellaneous Status Change Status Command: Response: <

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–65 Boot M&C Firmware Information Command: Response: <add/BFI_&

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–66 Card #1 Options/ Misc. Information Command: Response: <add/C1OI

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–67 Card #3 Options/ Misc. Information Command: Response: <add/C3OI

SDM-300A Satellite Modem Revision 6 Functional Description MN/SDM300A.IOM 2–6 2.2.1 Theory of Operation The modulator is composed of eight basic su

SDM-300A Satellite Modem Revision 6 Remote Control Operation MN/SLM3650.IOM A–68 State Of Product (Remove setup information) Command: Response:

g-1Glossary The following is a list of acronyms and abbreviations that may be found in this manual. Acronym Definition Ω Ohms 8PSK 8 Phase Shif

SDM-300A Satellite Modem Revision 5 Glossary MN/SDM300A.IOM g-2 EIA Electronic Industries Association EMC Electro-Magnetic Compatibility ESC Engi

SDM-300A Satellite Modem Revision 5 Glossary MN/SDM300A.IOM g-3 SYNC Synchronize TT Terminal Timing TTL Transistor-Transistor Logic TX Transmit (Tra

SDM-300A Satellite Modem Revision 5 Glossary MN/SDM300A.IOM g-4 This page is intentionally left blank.

i-1Index 50-Pin Connector Assignments, 15-8 8-Channel Multiplexer, 14-1 8-Channel Multiplexer 100-Pin Connector (J10), 14-5 8-Channel Multiplexer Sp

SDM-300A Satellite Modem Revision 5 Index MN/SDM300A.IOM i–2 Demodulator Spectrum Rotation, 19-15 Demodulator Specification, 19-12 Descrambling Type

SDM-300A Satellite Modem Revision 5 Index MN/SDM300A.IOM i-3 M Main PCB Firmware Chips, 3-20 Menu System, 5-4 Message Structure, A-2 Miscellaneous S

SDM-300A Satellite Modem Revision 5 Index MN/SDM300A.IOM i–4 U UB-300 Universal Breakout Panel, 1-9 UB-530 Breakout Panel, 1-9 UB-54 Breakout Panel,

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

SDM-300A Satellite Modem Revision 6 Functional Description MN/SDM300A.IOM 2–7 Direct Digital Modulation follows the two identical digital Nyquist fi

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

SDM-300A Satellite Modem Revision 6 Functional Description MN/SDM300A.IOM 2–8 2.3 Description of the Demodulator A block diagram of the demodulator

SDM-300A Satellite Modem Revision 6 Functional Description MN/SDM300A.IOM 2–9 2.3.1 Theory of Operation The demodulator functions as an advanced, d

Copyright © Comtech EF Data, 2000, 2001, 2002. All rights reserved. Printed in the USA. Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 U

SDM-300A Satellite Modem Revision 6 Functional Description MN/SDM300A.IOM 2–10 The soft decision mapper converts the digital I and Q data to 3-bit

SDM-300A Satellite Modem Revision 6 Functional Description MN/SDM300A.IOM 2–11 2.5 Description of the Interface The terrestrial interface functions

SDM-300A Satellite Modem Revision 6 Functional Description MN/SDM300A.IOM 2–12 INTERFACEBASEBANDLOOPBACKTXOVERHEADTX TERRRECEIVERSLINEPOVERHEADOVER

SDM-300A Satellite Modem Revision 6 Functional Description MN/SDM300A.IOM 2–13 2.5.1 Available Interfaces The following data interfaces are availa

SDM-300A Satellite Modem Revision 6 Functional Description MN/SDM300A.IOM 2–14 2.5.3 Closed Network Typically, the closed network operation does not

SDM-300A Satellite Modem Revision 6 Functional Description MN/SDM300A.IOM 2–15 2.6 Backward Alarm Theory and Connections Four sets of TX and RX bac

SDM-300A Satellite Modem Revision 6 Functional Description MN/SDM300A.IOM 2–16 A backward alarm being received on a particular link is detected by o

3–1 Chapter 3. Installation/ Upgrades CAUTION The equipment contains parts and assemblies sensitive to damage by Electrostatic Discharge (ESD). Use

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–2 3.2 Installation The modem arrives fully assembled from the factory. A

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–3 Figure 3-1. Installation of the Optional Mounting Bracket, KT/6228

iiCustomer Support Contact the Comtech EF Data Customer Support Department for: • Product support or training • Information on upgrading or return

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–4 3.3 Software and Hardware Installation/Upgrades 3.3.1 Overhead Inter

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–5 CAUTION The mounting hardware must be installed to provide proper grou

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–6 3.3.2 Hardware Upgrades 3.4 Reed-Solomon PCB 3.4.1 Unpacking CAUTION

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–7 4. After completing the above installation procedure, turn on the mod

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–8 3.5 Turbo Codec Installation The Turbo Card is installed in the same

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–9 3.5.2 Installation The following tool is required to install the Turbo

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–10 Notes: 1. In this configuration, the Modem allows only Data Rates

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–11 Note: If replacement Firmware IC’s were sent with the Turbo Codec, pe

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–12 the lithium battery NV-RAM (large Black or Yellow IC, U95). U74 is lo

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–13 3.6 Duplex Reed-Solomon Codec Installation Notes: 1. A Duplex Reed

iiiTable of Contents Chapter 1. INTRODUCTION...

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–14 Duplex Reed-Solomon Installation: 1. Disconnect the AC power to the

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–15 Figure 3-6. PCB Location SIMM SOCKET

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–16 Figure 3-7. Installation

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–17 3.7 Data I/O Interface Connector (J8) Removal/Installation Note: The

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–18 3.7.2 Data I/O Connector (J8) Installation 1. (For Ribbon-Configure

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–19 For Ribbon-Configured Connector For 50-Pin Connector with Overhea

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–20 3.8 Hardware Upgrades 3.8.1 Main PCB Firmware Chips The main PCB h

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–21 Figure 3-9. Main Board Field-Changeable Chips

SDM-300A Satellite Modem Revision 6 Installation/Upgrades MN/SDM300A.IOM 3–22 3.8.2 Overhead Interface PCB The overhead interface PCB has four fie

4–1 Chapter 4. External Connections 4.1 External Modem Connections When a breakout panel, such as the UB-300, is not required, the rear panel conne

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM iv2.2 Decription of the Modulator ...

SDM-300A Satellite Modem Revision 6 External Connections MN/SDM300A.IOM 4–2 Table 4-1. Modem Rear Panel Connectors Name Ref. Desig. Connector T

SDM-300A Satellite Modem Revision 6 External Connections MN/SDM300A.IOM 4–3 J6REMOTEALARMSJ10FAULTJ7J9AUX 1EX REF RX/IF INPUTCP3 CP1CP2TX/IF OUTPUT

SDM-300A Satellite Modem Revision 6 External Connections MN/SDM300A.IOM 4–4 4.1.1 Remote Connector and Pinouts (J6) The remote connector is a 9-pin

SDM-300A Satellite Modem Revision 6 External Connections MN/SDM300A.IOM 4–5 4.1.2 Fault Connector and Pinouts (J7) The fault connector provides For

SDM-300A Satellite Modem Revision 6 External Connections MN/SDM300A.IOM 4–6 4.1.3 Data I/O Interface Connector (J8) The Data I/O interface connecto

SDM-300A Satellite Modem Revision 6 External Connections MN/SDM300A.IOM 4–7 Table 4-4. 25-Pin D Connector Pinouts 25-Pin D Connector Pin # RS-422

SDM-300A Satellite Modem Revision 6 External Connections MN/SDM300A.IOM 4–8 Table 4-5. 34-Pin Winchester Connector Pinouts (V.35) Pin # Name A Gro

SDM-300A Satellite Modem Revision 6 External Connections MN/SDM300A.IOM 4–9 Table 4-6. 37-Pin Connector Pinouts (Optional) Pin # RS-422/MIL-188-14

SDM-300A Satellite Modem Revision 6 External Connections MN/SDM300A.IOM 4–10 Table 4-7. 50-Pin Connector Pinouts 50-Pin D Connector Pin # IDR IB

SDM-300A Satellite Modem Revision 6 External Connections MN/SDM300A.IOM 4–11 Notes: 1. IDR configuration connector pinouts: a. Backward alarm rel

SDM-300A Satellite Modem Revision 6 Preface MN/SDM300A.IOM vCHAPTER 4. EXTERNAL CONNECTIONS...

SDM-300A Satellite Modem Revision 6 External Connections MN/SDM300A.IOM 4–12 4.1.4 G.703/ASYNC Interface The G.703 T1, E1/ASYNC Interface Adapter

SDM-300A Satellite Modem Revision 6 External Connections MN/SDM300A.IOM 4–13 4.1.5 Auxiliary 1 Connector and Pinouts (J9) The auxiliary 1 (AUX 1) c

SDM-300A Satellite Modem Revision 6 External Connections MN/SDM300A.IOM 4–14 4.1.6 Alarms Connector and Pinouts (J10) The alarm connector provides

SDM-300A Satellite Modem Revision 6 External Connections MN/SDM300A.IOM 4–15 4.1.9 External Reference (CP3) CP3 is a BNC connector for an external

SDM-300A Satellite Modem Revision 6 External Connections MN/SDM300A.IOM 4–16 This page is intentionally left blank.

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–1Chapter 5. FRONT PANEL OPERATION 5.1 Front Panel The modem front p

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–2 5.1.1 LED Indicators The 10 LEDs on the front panel indicate modem summ

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–3 5.1.2 Front Panel Keypad The front panel keypad permits local operati

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–4 5.2 Menu System Note: The menus show features and options that are not

SDM-300A Satellite Modem Revision 6 Front Panel Operation MN/SDM300A.IOM 5–5 Press [↑] or [↓] to change the parameters. After the display represent