OPERATION
3-1-22
Marker beacon mode
The marker beacon mode is selected using the
[MARKER BEACONS]
key on the
Avionics Mode Selection Menu
shown in Fig. 3-1-9. Selecting maker beacon mode and pressing
the [SIG GEN] key produces the display shown in Fig. 3-1-16. Initially the outer beacon is
selected by default. The
[Middle Beacon]
and
[Inner Beacon]
keys change the modulation
frequency to 1.3 kHz and 3 kHz respectively. Carrier frequency and AM depth can be altered,
but always default to 75 MHz and 95% respectively. Modulation frequency can be changed
using the
[Source Freq: F1]
key. Modulation source can be changed using the
[Select Source]
key. Pressing the
[Avionics Modes]
key returns the display to the
Avionics Mode Selection
Menu.
Fig. 3-1-16 Marker beacon mode selection menu
VOR mode
VOR operation can be obtained from the
Avionics Mode Selection Menu
(Fig. 3-1-9) or if
other avionics modes have been selected, by first pressing the
[Avionics Modes]
key. Selecting
[VOR]
will produce the display shown in Fig. 3-1-17. The default carrier frequency for the VOR
mode is 108 MHz.
Fig. 3-1-17 VOR mode operation
RF
Level
Carrier
Freq.
LOCAL
AM
Depth
Source
Freq: F1
Avionics
Modes
Select
Source
Outer
Beacon
Middle
Beacon
Inner
Beacon
Carrier :
Freq.
RF Level :
dBm
OUTER BEACON
Modulation ENABLED
MHz
Int Std: 10 MHz
AM :
Int F1 : 400.0 Hz
ON
75.000 0000
-144.0
ON
95.0 %
C1127
