Northern Airborne Technology AMS42 - Manual (Page 64)

AMS42/44 Dual Channel Audio Controller Manual SM19 Rev. 4.00
Page 3-10 Nov 21, 2003
ENG-FORM: 806-0102.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
In the figure below, the right side configuration remains the same. The left side is set up
to receive and transmit on COM2 while monitoring COM1 and FM2 transceivers as well
as the MKR navaid. Note that FM1, AUX FM, PA, NAV1, NAV2, ADF and DME are not
selected on the left side.
Transmit Selector at COM2
Receive Switches
monitor COM1 and FM2
Receive Switch
at Navaid MKR
Volume Controls
(RX and ICS VOL)
3.10.3 Volume
Controls
The controller features individual master RX and ICS VOL controls on both the left and
right sides of the unit, which can be adjusted to suit the specific user's requirements.
3.10.3.1
RX Volume Control
The RX knobs are the smaller, topmost controls of the dual concentric volume control
assemblies. The RX VOL controls provide adjustment of the RX audio selected by the
controller from 10% to full. As in any audio system, it is important to set the individual
radio volume controls to a nominal level that is acceptable to both pilots, then adjust the
respective master RX VOL on the audio controller to suit user preference. The RX VOL
controls are designd to provide a minimum level, even when set fully ccw.
All receive audio is muted during transmit (NORM and ISO mode).
3.10.3.2
ICS Volume Control
The ICS VOL knobs are the larger, bottom controls of the dual concentric volume
control assemblies. The ICS VOL controls provide adjustment of the ICS audio
selected by the controller. The ICS volume controls provide adjustment from 0 to full
output. See also section 3.11.
3.10.4 Passenger Receive Audio Selection
The passengers normally hear the radio audio as selected on the left side of the
controller. The passengers can be shifted to the right side by changing the setting of the
internal PAX switch, accessible through the right side of the controller. The passengers
will not hear any radio audio when the red mode switch is in the EMER position.