154 Keysight EXG and MXG X-Series Signal Generators User’s Guide
Avionics VOR/ILS (Option 302)
Using ILS Marker Beacon Softkeys
When testing an ILS [Instrument Landing System], the following ILS Marker
Beacon parameters can be set:
To set the ILS Marker Beacon mode to off, inner, middle, or outer
This process selects a Marker Beacon Mode and can be one of the following:
1.
Press Aux Fctn > Avionics > Marker Beacon
2.
Press Marker Beacon
(Default selection is Off.)
3.
Select either: Off | Inner | Middle | Outer
— Selecting
Off
turns off all Marker Beacon signals. When set to Off, all
Marker Beacon parameter settings are turned off.
— Selecting
Inner
turns on and simulates the Inner Marker Beacon (nominal
3000 Hz modulation) signal.
— Selecting
Middle
turns on and simulates the Middle Marker Beacon
(nominal 1300 Hz modulation) signal.
— Selecting
Outer
turns on and simulates the Outer Marker Beacon (nominal
400 Hz modulation) signal.
To set the ILS Marker Beacon carrier frequency
This process sets the carrier frequency for the three Marker Beacons:
Inner, Middle, and Outer.
1.
Press Aux Fctn > Avionics > Marker Beacon
ILS Marker Beacon Menu
Parameters
Default State
Marker Beacon mode
Off
Carrier Freq Index
17
75.0 MHz
Marker Freq
400 Hz
Outer
Marker Depth
95.0%
Up
COM/ID menu
a
a. For information on the COM/ID menu,
“Using COM/ID Softkeys” on page 124
Setting the mode back to OFF, after selecting one of the other modes
(either: Inner | Middle | Outer) does not turn off the Marker Beacon carrier, specified by
Carrier Freq Index, it is still present on the RF Output of the signal generator.
To turn off this ILS Marker Beacon carrier, set RF Off/On to Off.
