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4 external connectors – Comtech EF Data SDM-9000 User Manual

Page 47

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SDM-9000 Satellite Modem

Installation

Rev. 4

2–5

2.4 External Connectors

When a breakout panel is not required, the external modem connections between the
modem and other equipment are made through several rear panel connectors. These
connectors are shown in Figure 2-2, and their locations are listed in Table 2-1. The
connectors are described in the following paragraphs.

When a B141-1 breakout panel is required, refer to the B141-1 Breakout Panel
Installation and Operation Manual
for connector information.

Figure 2-2. SDM-9000 Rear Panel View

Note: In order to meet the European EMC Directive (EN55022, EN50082-1), properly
shielded cables for DATA I/O are required. These cables must be double-shielded from
end to end, ensuring a continuous ground shield.

Table 2-1. Modem Rear Panel Connectors

Name

Ref.

Desig.

Connector

Type

Function

TX/IF OUTPUT

CP1

BNC

RF output

RX/IF INPUT

CP2

BNC

RF input

RECEIVE DATA

CP3

BNC

RX terrestrial data input

SEND DATA

CP4

BNC

TX terrestrial data input

EXT CLK

CP5

BNC

External clock input

REMOTE

J6

9-pin D

Remote interface

FAULTS

J7

9-pin D

Form C fault relay contacts

DATA I/O

J8

50-pin D

Data I/O (ESC)

AUX1

J9

9-pin D

TTL faults
External reference
AGC output

ALARMS

J10

9-pin D

Form C alarm relay contacts