User manual

Clear-Com Intercom Systems KB-212 Speaker Station

Rev. B

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:

• Pin 1—(NC)

• Pin 2—(NC)

• Pin 3—Channel A Audio

• Pin 4—Power (30 VDC)

• Pin 5—Ground (Shield).

FIGURE 3: Intercom Line Connector Wiring

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:

• Pin 1—Ground (Shield)

• Pin 2— + Signal

• Pin 3— - Signal.

KB-212 Intercom

Connector

XLR

Connector

Channel A

Pin 1