Keysight EXG and MXG X-Series Signal Generators User’s Guide 363
Using Avionics VOR/ILS Softkeys for N5171B/72B and N5181B/82B with Option 302
Using ILS Localizer Softkeys
Figure 14-13 ILS Localizer Softkeys
When testing an ILS [Instrument Landing System],
the following ILS Localizer parameters can be set:
- Sets Right Frequency
-Sets DDM Polarity
Left | Right | In-line
- Sets DDM (Difference
in Depth of Modulation)
- Sets DDM in uA
- Sets DDM in %.
DDM of 1% is
equivalent to 0.001
- Sets the Sum of
Depth of Modulation
- Sets the Phase of the
Right signal relative to
the Left signal
- Turns off the Left (90 Hz)
and Right (150 Hz)
ILS Localizer signals
- Turns on the Left (90 Hz)
and Right (150 Hz)
ILS Localizer signals
- Turns off the Left (90 Hz)
ILS Localizer signal
- Turns off the Right (150 Hz)
ILS Localizer signal
- Sets Left Frequency
- Sets a Carrier Frequency by selecting an Index from 1 to 40.
(Default: Index is 1 and corresponds to 108.10 MHz)
ILS Localizer Menu Parameters Default State
ILS LOC Mode OFF
Carrier Freq Index 1 108.10 MHz
Left/Right menu Left Frequency 90 Hz
Right Frequency 150 Hz
Left/Right Phase 0.00 deg
DDM/SDM menu Fly Left/Right None
DDM 0.0000
DDM uA 0.0 uA
DDM% 0.00%
SDM 40.0%
COM/ID menu
a
a. For information on the COM/ID menu,
refer to
“Using COM/ID Softkeys” on page 354.
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