Avionic Standards
R&S
®
SMA100B
125User Manual 1178.3834.02 ─ 05
Access:
► Select "ILS > General".
This dialog comprises general settings of the ILS standard, the default and the
"Save/Recall" settings.
By default, an ILS glide slope modulation signal on an RF carrier with a frequency
of 344.7 MHz or ICAO channel 18X. The dual-tone LF signal with frequencies 90
Hz and 150 Hz and a balanced modulation at SDM of 80 %.
If enabled, the avionic standard modulation is displayed in the "Modulation" tile as
follows:
● "Avionic: VOR" for enabled VOR modulation
● "Avionic ILS: Glide Slope/Localizer/Marker Bcn" for enabled ILS glide slope/
localizer/marker beacons modulation
● "Avionic: ADF" for enabled ADF modulation
Changing a parameter in the avionic standards causes an instant signal change in the
R&S SMA100B. There is no extra measurement cycle to calculate the RMS value of
the baseband signal to set the correct RF level.
If the avionics standard is activated for the first time, or after every subsequent on/off
sequence, the measurement cycle will take place to determine the correct RF level.
Every subsequent parameter change in the avionic standard is performed without
another measurement cycle to provide a continuous signal output.
ILS Configuration and Settings
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