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3 asi in/out 1 & 2 connectors, bnc (unused), 4 utility connections, 1 term connector, rj-12 – Comtech EF Data CDM-740 User Manual

Page 46: 2 redundant connector, db-9f

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CDM-740 Advanced Satellite Modem

Revision 0

Rear Panel Connector Pinouts

MN-CDM740

3–4

3.3.3

ASI IN/OUT 1 & 2 Connectors, BNC (UNUSED)

This BNC connector group is unused. All information in this
section is provided for reference only.

3.4

Utility Connections

3.4.1

TERM Connector, RJ-12

The TERM Connector is a standard 6-pin RJ-12 female modular jack. It is used for
management of CDM-740 and IP functions using a terminal emulator connected
(with the supplied adapter cable) to the Console port. This is a EIA-232 DCE
interface. Refer to Table 3-2 for the connector pinouts.

Table 3-2. TERM Connector Pin Assignments

Pin #

Function

1 Ground

2 Rx

3 Tx

4 Ground

5 Not

used

6 Not

used

3.4.2

REDUNDANT Connector, DB-9F

The Redundant connector is a 9-pin Type ‘D’ female connector, intended only
for connection to a CRS-175L L-Band 1:1 Redundancy Switch. Refer to Table 3-3
for pinouts.

Table 3-3. REMOTE Connector Pinouts

Pin #

Description

Direction

1 Ground

2

Receive Serial Data – auxiliary channel

In

3

Redundancy In 1

In

4

Redundancy In 2

In

5 Ground

6

Transmit Serial Data – auxiliary channel

Out

7

Redundancy Out 1

Out

8

Redundancy Out 2

Out

9

Fused +12 volt

Out