ATR833A / P/N 833A-(xxx)-(1xx)
Operation and Installation
36
Dokument-Nr.: 01.1411.010.71e / Revision: 3.00
4.7.3.2 Connector RMT for Remote Control
This connector contains the serial interface and the power supplies for
the remote control unit. MSTR = Master Radio
Connector for the
Remote Control
in the cable harness
BSKS833S/D
View from
aircraft’s side
4.7.3.3 Connector EXT-NF for Monaural Audio Input
This connector is used for the input of monaural audio signals. He can be
used e.g. for acoustic traffic warnings, for radio navigation receiver’s
acoustic identifiers, or for input of music into the headsets.
The priority of radio reception in relation to this input can be configured
as described in section 3.4.
4.7.3.4 Auto-ON
Connector pin 20 determines the radio’s behaviour when applying power:
To activate the radio in aircraft with a dedicated avionic master switch by
this master (i.e. by applying power to the radio), connect pin 20 to the
avionic master additionally to pins 11 and 12; in this case, the radio’s
on/off-key has no functionality.
In aircraft without a dedicated avionic master, pin 20 is left open; in these
case, the radio’s on/off-key is used.
