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4 external connections – Comtech EF Data SDM-100A User Manual

Page 31

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SDM-100A Satellite Modem

Installation

Rev. 0

2–5

2.4 External Connections

Connections between the modem and other equipment are made through five connectors.
These connectors are listed in Table 2-1, and their locations are shown in Figure 2-2.
The use of each connector is described in the following paragraphs.

Table 2-1. Rear Panel Connectors

Name

Ref.

Desig.

Connector

Type

Function

DATA I/O

J8

Various:

Data Input/Output:

37-pin

D

RS-422/449

34-pin block or
25-pin D

V.35

25-pin

D

RS-232

50-pin

D

ASYNC

50-pin D

ADPCM Voice

REMOTE

J6

9-pin D

Remote Interface

FAULTS

J7

9-pin D

FORM-C Fault Relay
Contacts

TX/IF OUTPUT

CP1

BNC

TX IF Output

RX/IF INPUT

CP2

BNC

RX IF Input

AC POWER

None

Standard

Alternating Current (AC)
Power Input

DC POWER

None

Terminal block

Direct Current (DC)
Power Input

CHASSIS GND

GND

#10-32 stud

Chassis Ground

AGC

AGC

Test point

Automatic Gain Control (AGC)
Test Point



Figure 2-2. Rear Panel View