Rohde & Schwarz SMAB-B92 - Signal Settings

Avionic Standards
R&S
®
SMA100B
130User Manual 1178.3834.02 ─ 05
5.4.2.2 Signal Settings
Access:
1. Select "ILS Component > Glide Slope", see Chapter 5.4.2, "ILS Glide Slope Set-
tings", on page 127.
2. Select "ILS > Signal".
This dialog comprises modulation signal settings related to the ILS glide slope
component of the ILS signal.
Settings
Operating Mode.......................................................................................................... 130
DDM Polarity...............................................................................................................131
Up Frequency..............................................................................................................131
Down Frequency.........................................................................................................131
Up/Down Phase.......................................................................................................... 131
Operating Mode
Selects the operating mode for the ILS glide slope modulation signal.
"Norm"
ILS glide slope modulation is active.
"90 Hz"
Amplitude modulation of the output signal with the upper lobe signal
component (90 Hz signal content) of the ILS glide slope signal.
The modulation depth of the 90 Hz signal results from the settings of
the parameters Sum of Depth and DDM Depth according to:
●
"Fly > Down"
AM (90 Hz) = 0.5 × (SDM + DDM × 100 %)
●
"Fly > Up"
AM (90 Hz) = 0.5 × (SDM - DDM × 100 %)
ILS Configuration and Settings