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Comtech EF Data SDM-100A User Manual

Page 62

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Operation

SDM-100A Satellite Modem

3–28

Rev.

0

Notes:

1. A “-” indicates that no fault or alarm exists.

2. A “+” indicates that a fault exists, and will cause

switching in a redundant system.

3. A reversed contrast “+” indicates an active alarm.

SDM-100 "TYPE"

VER: 14.7.4

FUNCTION SELECT

FAULTS/ALARMS

MODULATOR

DEMODULATOR

COMMON

IF SYNTHESIZER

DATA CLOCK SYN

I CHANNEL

Q CHANNEL

AGC LEVEL

MODULE

See notes.

CARRIER DETECT

IF SYNTHESIZER

I CHANNEL

Q CHANNEL

DESCRAMBLER

BER THRESHOLD

MODULE

See notes.

BATTERY/CLOCK

-12 VOLT SUPPLY

+12 VOLT SUPPLY

+5 VOLT SUPPLY

CONTROLLER

INTERFACE MODULE

See notes.

ACCESS TO

SUBMENU

CONDITIONAL OR

OPTION-DEPENDENT

Parameter Information

Key:

TX INTERFACE

RX INTERFACE

TX CLK ACTIVITY

TX AUDIO CLIP

BUFFER CLK ACT

BUFFER UNDERFLOW

BUFFER OVERFLOW

RX AUDIO CLIP

DEMUX LOCK

REMOTE OFF HOOK

Figure 3-8. Faults/Alarms (SDM-100 Operation)