Northern Airborne Technology AMS43 TSO - Manual (Page 11)

AMS43 TSO Single Channel Audio Controller
SM27 Installation and Operation Manual
Section 2 Rev: 1.00 Issue 4 Page 2-4
2.5.1 Left Side Panel Adjustments
The trimpots on the left side panel are used to adjust the levels of audio in the user’s headphones.
Rotating the trimpots cw increases the level, and ccw reduces it.
The ALERT LEVEL trimpot is used to adjust the levels for the three internally generated Alert signals.
Other parameters relating to these signals are adjusted from the right side panel (see section 2.5.2.)
The S/T LEVEL trimpot adjusts the internal gain of the sidetone of the selected transceiver (from the front
panel) in the user’s headphones.
The VOX LEVEL trimpot sets the sensitivity level for the front panel VOX control (the level of audio
required to activate microphones).
The POWER ON LED will illuminate to indicate that the unit is connected to the power supply.
2.5.2 Right Side Panel Adjustments
A variety of different signals can be selected to trigger the internal Alert signals. The trimpots on the right
side panel are used to adjust the characteristics of the audible signals that the user will hear.
Audio Alert 1 is a single tone signal and Audio Alerts 2 and 3 are two tone signals. The pitch of the
signals can be adjusted using the relevant TONE trimpot, and the cycling rate of the two-tone signals can
be adjusted using the RATE trimpots. The duration of Audio Alert 3 can be adjusted from one to three
seconds using the TIME trimpot.
The DIR AUD LEVEL trimpot is used to adjust the audio level of the devices connected to the DIR AUD 1
input.
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