Station Master & Talkback Intercoms Handbook
21
External Inputs
The 25 pin D-Type female (socket) connector provides the stereo balanced inputs for the
four external sources, with the following pins used :
Pin No.
External Inputs
1
Left phase input EXT 1
2
Left chassis ( screen ) input EXT 1
3
Right non-phase input EXT 1
4
Left phase input EXT 2
5
Left chassis ( screen ) input EXT 2
6
Right non-phase input EXT 2
7
Left phase input EXT 3
8
Left chassis ( screen ) input EXT 3
9
Right non-phase input EXT 3
10
Left phase input EXT 4
11
Left chassis ( screen ) input EXT 4
12
Right non-phase input EXT 4
13 N/C
14
Left non-phase input EXT 1
15
Right phase input EXT 1
16
Right chassis ( screen ) input EXT 1
17
Left non-phase input EXT 2
18
Right phase input EXT 2
19
Right chassis ( screen ) input EXT 2
20
Left non-phase input EXT 3
21
Right phase input EXT 3
22
Right chassis ( screen ) input EXT 3
23
Left non-phase input EXT 4
24
Right phase input EXT 4
25
Right chassis ( screen ) input EXT 4
S TAT I O N M A S T E R
CO N N E C T I O N D E TA I L S
ST
A
TION MASTER C
ONNEC
TION DET
AILS
3
Summary of Contents for SM-24
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