140 Keysight EXG and MXG X-Series Signal Generators User’s Guide
Avionics VOR/ILS (Option 302)
Using ILS Localizer Softkeys
If SDM is set to 99%, then the full range (-0.99 to 0.99) of DDM is
available. The following demonstrates the limits of DDM’s range:
(–SDM/100) to (SDM/100)
As SDM’s value increases or decrease, so does DDM’s range.
8.
Set the ILS Localizer SDM value.
a.
Press SDM
(Default value is 40.00%.)
b.
(Optional) Select a <value> from 0 to 99% and press Enter.
9.
Set the ILS Localizer mode.
a.
Press ILS LOC Mode
(Default selection is OFF.)
b.
Select NORM to turn on both the Left (90 Hz) and the Right (150 Hz)
ILS Localizer signals.
10.
Set the modulation to on.
a.
Press MOD On and verify that the front panel LED is illuminated,
indicating that it is on.
(Default is on).
11.
Set a desired RF power level.
a.
Press Amptd
(Default power level is around -144 dBm, and depends on the signal
generator model being used, so the signal may be very low and hard
to find if you do not specify a high enough power level.)
b.
Select a value from -20 dBm to -40 dBm.
12.
Set the RF output to on
a.
Press RF On and verify that the front panel LED is illuminated,
indicating that it is on.
(Default is off).
13.
Verify that all settings are as expected on the signal generator display.
a.
Press Aux Fctn > Avionics > ILS Localizer
b.
Review the settings under
ILS-LOC Status Information
