ATR 42 Model : 400/500
ADF SYSTEM
NAVIGATION SYSTEM
P 3
NOV 99
001
1.15
.
20
STO button
Allows to enter frequencies into the four memory positions.
- Preset the frequency to be stored.
- Push the STO button : upper window displays an available memory channel.
- For 5 seconds, the MEM switch may be used to change the channel number.
- Push the STO button a second time : displayed frequency is stored in the
displayed channel.
- After 5 seconds, the control returns to normal operation.
ACT button
In normal operation, frequency select knobs(2) change the preset frequency
display. After a 2 second push on the ACT button the bottom, window displays
dashes, the knobs directly act on the active frequency. A second push on the button
enables return to normal operation.
TEST button
Is used to initiate the radio self test diagnostic routine.
Annonciators
MEM (Memory) : illuminates when a preset frequency is being displayed in the
lower window.
RMT (Remote) : illuminates when the ADF control box is being remotely
controlled by an other system (FMS, NCS, etc...).
Light sensor
Automatically adjusts the display brightness.
20.3 ELECTRICAL SUPPLY
EQUIPMENT
DC BUS SUPPLY
(C/B)
ADF 1
DC STBY BUS
(on overhead panel ADF 1)
ADF 2 (if installed)
DC BUS 2
(on overhead panel ADF 2)
AA
6
7
8
9
10
R
AviationLearning.net
01/07//2018 REV 1 These notes are not revised after issue For Training Purposes Only
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