Clear-Com Cellcom Instruction Manual download pdf (Page 15)

TW-47 TWO-WAY RADIO INTERFACE

1-7

OPTION SETTINGS

Internal switches select the intercom line interface of the TW-47.

To access the switches, remove the four screws retaining the top

cover and remove it. The switches are located on the PCB on the

right hand side of the unit. The switch handles are easily

accessible. The settings are as follows:

• When the Intercom Compatibility Switch is set to Clear-Com

(C-C), intercom audio is on pin 3 of the XLR connector. The

DC level call signal is sensed on this pin. In this position, the

TW intercom channel switch setting has no effect.

• When the Intercom Compatibility Switch is set to TW, the

intercom audio XLR pin connection is determined by the TW

intercom channel switch. The call signal is sensed as a 20 KHz

signal on the selected intercom audio pin.

• When the TW Intercom Channel Switch is set to pin 2,

intercom audio is on pin 2 (channel A) of the XLR connector,

and when the TW intercom channel switch is set to pin 3,

intercom audio is on pin 3 (channel B) of the XLR connector.

The Figure 1-6 on page 1-8 shows the location of the jumpers

and switches on the printed circuit board.

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 29 30

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Clear-Com Cellcom Instruction Manual Page 15