Installation manual

Multi-Channel System
In a multi-channel system where each channel is run on its own cable and connected only to single
channel Remote Stations as in the following diagram, there are no crosstalk issues because the chan-
nels do not share a common ground. Consult the table in the next section for cable recommendations.
It is also important to centrally locate the multi-channel Main Station or Power Supply containing the
termination. Crosstalk does not exist at the termination point, but can increase in proportion to the
length of the wiring to multi-channel stations. If the termination is centrally located and the wiring
length guidelines in the following section are adhered to, then crosstalk will be at a minimum.
Crosstalk Considerations in a Multi-Channel System
In a multi-channel system where multiple channels are run from a Main Station to a Remote Station as
in the following diagram, crosstalk can be an issue. This is because the channels will share a common
ground at both ends of the cable run.
2
3
1
4-Channel
Main Station
or Power
Supply
A
B
C
D
2
3
1
2
3
1
2
3
1
2
3
1
4-Channel
Remote
Station
A
B
C
D
2
3
1
2
3
1
2
3
1
Power
Ch. A Audio
Ch. D Audio
Ch. B Audio
Ch. C Audio
Gnd*
Gnd*
Gnd*
* = Spare Wire used for Gnd
Drain wire Gnd
Ch. D Audio
Gnd*
Ch. C Audio
Ch. B Audio
Gnd*
Gnd*
Ch. A Audio
Power
Drain wire Gnd
** = If the shields from individual
pairs are brought out separately,
they must also be connected to
Pin 1.
Shield**
Shield**
Shield**
Shield**
Shield**
Shield**
Clear-Com System Installation Manual
4
Channel A
Channel BChannel C
Channel D