OPERATION
3-1-27
ADF mode
The ADF mode is selected using the
[ADF]
key on the
Avionics Mode Selection Menu
shown in Fig. 3-1-9. This menu can be selected from other aviation modes (VOR, ILS,
MARKER BEACON, SEL-CAL) using the
[Avionics Modes]
key. Selecting the ADF mode and
pressing the [SIG GEN] key produces the display shown in Fig. 3-1-23.
Fig. 3-1-23 ADF mode selection menu
The carrier frequency will default to 190 kHz and the modulation depth to 30% from a
1 kHz source. This setting is used to simulate a long wave transmitter for direction finding
purposes. The instrument operation is very similar to non-avionics modes with a single
modulation selected (except that FM cannot be selected).
Pressing the
[Avionics Modes]
key returns the display to the
Avionics Mode Selection
Menu
shown in Fig. 3-1-9.
RF
Level
Carrier
Freq.
LOCAL
AM
ON/OFF
AM
Depth
Source
Freq: F1
Avionics
Modes
Select
Source
Carrier :
Freq.
RF Level:
dBm
ADF Mode
Modulation ENABLED
kHz
Int Std: 10 MHz
AM :
Int F1: 1.0000 kHz
ON
190.0000
-144.0
ON
30.0%
C1132
