Wiring destinations, Wiring destinations -19, Main unit – Clear-Com RCS-2700 User Manual
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WIRING DESTINATIONS
You wire destinations to the main unit and to expansion units 2 and 4, if they
exist. The pinout to the XLR cables connecting to beltpacks and other stations is
simply 1-2-3 from left to right. Pin 3 is the switched connection.
You use the 3-pin XLR connector in 2-wire intercom systems for cabling stations
and beltpacks together. Pin 1 is ground, pin 2 carries power (and sometimes
audio), and pin 3 carries audio (and sometimes power). When a destination is
connected to the RCS-2700, the RCS-2700 is actually switching the destination’s
pin-3 audio connection to one of the sources. The pin-2 connections (which
carry power) and the pin-1 connections do not switch.
Figure 2-20: Connection Wiring to Destinations
You can wire the destination connections for conventional single-channel
Clear-Com party lines or for two-channel TW party lines. The wiring difference
is as follows:
1 2 3
Shield
Main Unit
Destinations
12
13
14
15
16
17
18
19
21
22
23
24
1
2
3
4
5
6
7
8
9
10
11
12
Destinations