Northern Airborne Technology AA83-001 rev.4.10 - Manual (Page 33)

SM09-2 Rev. 4.10 AA83-001 InterMUSIC™ Stereo Intercom System Manual
3.3.7 Muting
Explanation
When transmitting, any music will be muted quickly, and will slowly return when
transmission is completed. Music will also be muted when ICS or RX functions are
active. The degree of muting is set via the MUSIC MUTE adjustment explained in the
installation section of this manual. The relative volume of the music can be changed
from the front panel by the knob marked with a musical note.
Below is a simple chart to aid in understanding audio switching in the NORMAL
Operation mode. The following terms are used:
' Active' - Function being used.
' Muted' - Functions that are overridden by the active condition.
' Idle' - Functions that are not active, but still available for use.
Music
ICS RX Pilot TX Copilot TX
Active Idle Idle Idle Idle
Muted Active Idle Idle Idle
Muted Idle Active Idle Idle
Muted Muted Idle Active Muted
Muted Muted Idle Idle Active
End of section 3
Oct 20, 2004 Page 3-5
ENG-FORM: 806-0106.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.