Northern Airborne Technology AMS50 User Manual
Page 24
AMS50-000 Stereo Audio Panel with Marker Manual
SM50 Rev. 4.00
2.3.6.3
Stereo Music Installations
The AMS50 can accept stereo music input from portable entertainment units, CD players
and other integrated on-board systems. Stereo output delivers high quality music to stereo
aviation headsets or standard monaural general aviation headsets. Frequency response is
50 Hz to 15 kHz. Music muting occurs during all RX, TX, ATC or intercom activity, with a
progressive return to the previous level. Music volume is controlled at the music source.
CAUTION
If monaural headsets are used, ensure that the outputs of the
left and right channels are not connected together, and that
only one channel is connected to the monaural phones jack.
2.3.6.4
Direct Audio Inputs
Accommodation is made for two (2) direct unswitched inputs (P101 pins <10>,
and
inputs are not muted to the Pilot’s headset.
2.3.6.5
Radio PTT Inputs
Separate PTT inputs are provided for the Pilot (P201 pin <10>) and Co-pilot (P201 pin
<11>). Activation of a PTT input connects the user’s microphone 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 direct
audio inputs) is removed from the headphones of the particular PTT user, unless there
is a telephone interconnect. All cockpit speaker audio is muted during radio PTT
operations.
2.3.6.6
Pilot Remote TX Selection
Pilot selection of transmitters can also be made via a remote-mounted momentary
switch, using P201 pins
2.3.6.7 Panel
Lights
To set the AMS50 panel backlighting intensity to remain at maximum and not dim with the
aircraft dimming buss, jumper the light power (P101 pin <20> or pin <21>) to the main dc
power input of the AMS50 (P101 pin <22>).
Page 2-6
Nov 12, 2003
ENG-FORM: 805-0104.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.