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Remote interface out (j5 and j25), Ac power, Ground – Comtech EF Data SMS-451 User Manual

Page 45: 4 remote interface out (j5 and j25), 5 ac power, 6 ground

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SMS-451 Satellite Switch

Revision 0

Installation

MN/SMS451.IOM

2-19

2.3.3.4 Remote

Interface OUT (J5 and J25)

The Remote Interface is provided on a 25-pin female D connector. Screw locks are
provided for mechanical security of the mating connector.

Signal Function

Name

Pin #

DEMOD SWITCH STATUS

NO(B)
NC(A)
COM

8
7
15

MOD SWITCH STATUS

NO(B)
NC(A)
COM

6
5
13

CONTROL MOD REMOTE

MR(A)
MR(B)
GND

4
3
14

CONTROL DEMOD REMOTE

DR(A)
DR(B)
GND

2
1
9

MODE STATUS

COM
NO
NC

18 LOCAL
16 REMOTE
17

DEMOD SET

D_SET
M_SET
GND

11 MOD SET
12
24

2.3.3.5 AC

Power

The AC power is supplied to the switch by two standard detachable, non-locking,
3-prong power cords. Normal input voltage is 90 to 264 VAC, 47 to 63 Hz. The power
supplies are self-adjusting. For maximum redundancy protection, the switch will operate
with only one power supply. Maximum power consumption is less than 10W.

2.3.3.6 Ground

A#10-32 stud is available on the rear for the purpose of connecting a common chassis
ground between all of the equipment.