AA12S Series Compact Audio Controller Manual | SM69 Rev. 4.00 |
VOX/TX Annunciator | RX Select Switches | TX Select Switch |
3.3.1.1Receive
The AA12S is typically configured to select the RX audio from three transceivers and up to four additional receivers.
The RX Select switches are white
Transceiver audio can either be selected by setting the appropriate RX select switch to the up position, or as a function of the TX select switch. The transceiver that is selected by the TX select switch is also automatically selected for receive. Receive/sidetone audio for the selected COM is automatically provided.
When a switch is in the
3.3.1.2Transmit
The TX select switch is a
TX selections are available only to the pilot and copilot. Activation of either TX PTT input connects the user’s MIC to the selected COM, and activates the output PTT to the selected COM. When PTT is pressed, all audio except the sidetone of the selected COM and NAV inputs is removed from the headphone of the particular PTT user. The sidetone of the active COM is provided from the COM radio.
The PA position provides PA mic audio and PA keyline to an external amplifier (e.g. AA21, AA23, PA250) for use as either a Loudhailer or Passenger Address system.
A priority transmission feature allows the pilot to override the
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| Oct 13, 2005 |
Amendment #1 | Oct 14, 2005 |
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