Northern Airborne Technology AMS42 - Manual (Page 57)

SM19 Rev. 4.00 AMS42/44 Dual Channel Audio Controller Manual
Nov 21, 2003 Page 3-3
ENG-FORM: 806-0102.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
3.4 AMS42 - Transceiver Receive Functions
3.4.1 Receive Selection Switches
The receive audio is selected by switching any of the RX switches (white switch bats)
UP to connect the indicated radio to the headphone bus. The AUX position does not
have a separate RX switch and is connected to the headphone bus by rotating the TX
selector to the AUX position. See section 3.4.3.1 for RX volume control.
3.4.2 Transceiver Selection Examples
In the figure below, the right side TX selector is set for transmit and receive operation on
COM2. The Receive function switches are also selected so the right side can monitor
COM1 and FM2 transceivers. Note that FM1 is not selected and AUX cannot be
selected by the RX switches.
RX Switches at COM1 and FM2
TX Selector at COM2
In the figure below, the right side configuration remains the same. The left side is set up
to receive and transmit on FM1 while monitoring the COM2 transceiver. Note that
COM1 and FM2 are not selected on the left side.
TX Selector at FM1
RX switch at COM2
Volume Controls
(RX and ICS VOL)