ClearCom KB-212 User Manual page 8

Clear-Com Intercom Systems
12—Intercom Line Connection
The KB-212 contains a five-terminal, plug-on connector for intercom line
connection. This connector is intended to be unplugged from the circuit board
when connecting the intercom line, and then plugged back on when the wiring
is completed. The connections for each pin are visible on the circuit board
when the connector is unplugged. The pinout of this connector is as follows:
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•
•
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13—Program Input
A three-terminal, plug-on connector provides the program input to the station.
Program is fed to the speaker. This level is controlled by the Program Level
control. The Program Input accepts a balanced or unbalanced line-level audio
signal from -20 dBv to +10 dBv. If this input is connected to the stage
announce (SA) output of a Main Station it can be used as a paging input.
Since the level of this input is independently adjustable from the intercom
audio volume, it can be used to override the intercom audio in all modes
except Remote Listen-Page. The program input is also independent of the
Mode setting. The pinout of the Program Input connector is as follows:
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© Clear-Com Intercom Systems 2000
Pin 1—(NC)
Pin 2—(NC)
Pin 3—Channel A Audio
Pin 4—Power (30 VDC)
Pin 5—Ground (Shield).
Pin 1
KB-212 Intercom
Connector
FIGURE 3: Intercom Line Connector Wiring
Pin 1—Ground (Shield)
Pin 2— + Signal
Pin 3— - Signal.
2
Channel A
3
1
XLR
Connector
7
KB-212 Speaker Station
Rev. B