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

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.