R&S SMA100B - Signal Settings

Avionic standards
R&S
®
SMA100B
147User Manual 1178.3834.02 ─ 09
"EXT (MOD AM)"
Selects the external source. The external signal is added to the inter-
nal signal. Switching off the internal source is not possible. The exter-
nal signal is input via the Ext connector. The sensitivity is 10 mV per
percent modulation depth.
Note: There can be an overmodulation as a function of the level of
the external signal without a corresponding caution message being
generated. To avoid an overmodulation, the peak value of the exter-
nal signal is to be delimited corresponding to the sum of the modula-
tion depths of the remaining VOR signal components.
Remote command:
[:SOURce<hw>]:ILS[:GS|GSLope]:SOURce on page 610
6.4.2.2 Signal settings
Access:
1. Select "ILS Component > Glide Slope", see Chapter 6.4.2, "ILS glide slope set-
tings", on page 145.
2. Select "ILS > Signal".
This dialog comprises modulation signal settings related to the ILS glide slope
component of the ILS signal.
Settings
Operating Mode.......................................................................................................... 147
DDM Polarity...............................................................................................................148
Up Frequency..............................................................................................................148
Down Frequency.........................................................................................................148
Up/Down Phase.......................................................................................................... 148
Operating Mode
Selects the operating mode for the ILS glide slope modulation signal.
"Norm"
ILS glide slope modulation is active.
ILS configuration and settings