ATR833A-II / P/N 833-II (Axxx)-(Axxx)
Operation and Installation
39
Doc.-No. 01.143A.010.71e / Revision 1.00
4.6.2 Headset Connection
Two headphones of the same type can be connected in parallel for each
input. The total impedance in this case must not be less than
100Ω.
4.6.3 Audio-Input
The external audio input can be used for the input of warn tones or music
etc. In order to avoid disturbances while this input is not used, the
respective wire needs to be short-circuited.
With cable sets available from f.u.n.k.e. Avionics the external audio-input
is already short-circuited by a blind plug. This blind plug can be easily
removed in order to use the external audio input.
If the external input is not used, it needs to be short-circuited
with GND, in order to avoid the pickup of electrical noise.
4.7 Wiring
4.7.1 Conductor Cross Section
The conductors used must be approved for aircraft installation.
Power Supply (Power, GND):
AWG18 (0.96 mm²)
Signals:
AWG22 (0.38 mm²)
