ATR833 / P/N 833-(xxx)-(2xx)
Operation and Installation
25
Document-No.: 01.1403.010.71e / Revision: 3.01
3.3 PTT-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.
ACT
123.450
SBY
118.910
PTT all mics
With the
rotary knob the following options can be selected:
all mics
Both PTT buttons and all microphones are used for
transmissions, no matter what PTT button was
pressed
single mic
According to the PTT button pressed, the associated
microphone is activated
left only
Only the left PTT button and the left microphone(s) are
used for transmissions
right only
Only the right PTT button and the right microphone(s)
are used for transmissions
The intercom functionality is not affected by this setting.
A short press of
SET
switches to the next configuration item, a long
press of
SET
exits the configuration menu.
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.
