Icu Controls And Indicators - COMMUNICATIONS-APPLIED TECHNOLOGY AMCVIS Operating Manual

4. ICU CONTROLS AND INDICATORS

On the ICU is a jack that will mate with U-174/U headset plug.
A spring-loaded clothing clip is provided on the ICU.
To plug the cable's connector into a jack on the front of the IMU, align the ICU plug and IMU jack
Intercom and Radio P-T-T switches, and volume control are installed on the ICU.
Individual Radio Select
for Transmit
FIGURE 8: INTERCOM CONTROL UNIT (ICU)
Volume adjustment for
selected radio
Intercom ONLY "key"
U229 Interface to IMU
- 10 -
Master volume adjustment
for intercom and radio
Selected radio and
intercom 'key"
Interface to EITHER Dynamic
or Electret Microphones. IMU
will auto-adjust for either type.