ATR833A-II / P/N 833-II (Axxx)-(Axxx)
Operation and Installation
27
Doc.-No. 01.143A.010.71e / Revision 1.00
off xxx s
: automatic display darkening after xxx seconds after last user
interaction (xxx= 10s, 20s, 30s, 60s, 120s)
ACT RX
123.450
SBY
118.275
DISPLAY
off 10s
Reactivation of the darkened display is done by press of any key (except
key
I/O
) or turn of any knob (the action of the key pressed is performed
when pressing the key again after the display turned on) or when
transmitting.
A short press of
SET
switches to the next configuration item.
3.3 PTT SELECT - Button Selection
In case of using two external PTT buttons, this configuration item can be
used to deactivate one PTT button
– and the associated microphone(s) –
from enabling transmission.
With the
VOL/SEL
rotary knob the following options can be selected:
This feature should only be used when:
it can be foreseen that no frequency changes will be
required (i.e. when using only limited airspace near one
airport, e.g. for circuit pattern training flights), and
the crew is familiar with the energy saving mode
In all other cases this feature shall be deactivated, in order to
prevent the usage of wrong frequencies and to avoid
confusion of pilots not aware of the energy saving mode.
