ICA900 Rev150324
8
OPERATION
The Push-To-Talk modules are always in receive mode. The Push-To-Talk button
must be pressed to put the module into transmit mode.
The hands free module is always in transmit mode. To talk on the intercom the
operator speaks and the intercom transmits. It is in receive mode when another module
is transmitting.
Two-Way System
The system includes two control modules with a Push-To-Talk button or one
control module with a Push-To-Talk button and one control module that is hands free.
Three-Way System
The system includes three control modules with a Push-To-Talk button or two
control module with a Push-To-Talk button and one control module that is hands free.
Operational Check
1. Turn on DC power to intercom.
2. Press the Push-To-Talk button to put control module in transmit mode and
speak toward the control module microphone.
Result: Voice is heard over speaker(s) connected to other control modules.
(Adjust the volume level buttons at each module for receive level.)
3. Repeat step 2 at each control module. If a hands free module is installed speak
toward the control module microphone and it is in transmit mode.
Programmable Power-Up Volume Level
ACT intercom control modules include a program that allows for setting the volume
level at power-up. Two modes are available:
Power-Up at the Last Used Volume Setting
1. Press and hold the volume increase button until the top LED flashes. Release
the button and wait 15 seconds.
Result: The volume drops to 50% level; the module sets to the last used volume
level on power-up.
Power-Up at a Pre-Set Volume.
1. Press and hold the volume decrease button until the bottom LED flashes.
Release the button.
2. Press the increase button and set to desired level. Release the button and wait
until the highest LED flashes.
Result: The module sets to this volume level on power-up.
