OPTION 006 Avionics
Annex-B-15
When "coupling" is enabled, the 30 Hz AM depth is set to be equal to the 9960 Hz
sub-carrier AM depth setting as the sub-carrier depth is varied. Similarly, the sub-carrier depth is
set to the 30 Hz tone depth when the 30 Hz tone depth is varied. This mode of operation is
disabled by pressing the [Disable Coupling] key.
Identity channel
VOR signals often carry a morse coded tone to identify the transmitter. This signal can
be simulated by selecting the [Ident/Comms] key to produce a display similar to the one shown
in Fig. B-16.
RF
Level
AM2
Depth
Source
Freq: F4
AM2
ON/OFF
Select
Source
Carrier
Freq.
Avionics
Modes
VOR
Bearing
LOCAL
VOR:
Int F4 : 1.0200 kHz
ON
VOR Rate: 30.0 Hz
Bearing 0° FROM Beacon
VOR FIXED BEARING Modulation Enabled
30.0% 10.0%
C1131
Carrier :
Freq.
RF Level :
dBm
MHz
Int Std: 10 MHz
108.000 0000
- 144.0 ON
AM2 :
Fig. B-16 Ident/Comms selected
The instrument will generate a VOR signal having equal sub-carrier and 30 Hz tone
depths with a 0° bearing. The AM depth displayed is the depth of each tone and can be changed
using the [VOR] key.
An additional AM signal, AM2, can be added to this waveform. The source of this
modulation can be selected using the [Select Source] key and if internal modulation has been
selected the modulation frequency can be set using the [Source Freq.] key. The depth of this
additional signal can be set by the [AM2 Depth] key.
ADF mode
The ADF mode is selected using the [ADF] key on the Avionics Mode Selection menu
shown in Fig. B-3. 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. B-17.
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