Rohde & Schwarz SMAB-B92 - ILS Localizer Settings; General Settings

Avionic Standards
R&S
®
SMA100B
134User Manual 1178.3834.02 ─ 05
The DDM value in percent is calculated as follows:
●
"DDM Polarity > 90 Hz - 150 Hz":
DDM = [ AM (90 Hz) - AM (150 Hz) ]
●
"DDM Polarity > 150 Hz - 90 Hz":
DDM = [ AM (150 Hz) - AM (90 Hz) ]
A variation of the DDM value automatically leads to a variation of the value of the
instrument current and the DDM value in dB.
Remote command:
[:SOURce<hw>]:ILS[:GS|GSLope]:DDM:PCT on page 555
DDM - SDM Coupling
Selects if the DDM value is fixed or is changed with a change of sum of modulation
depths (SDM, see below).
"Fixed DDM"
The absolute DDM value stays constant, if the SDM is changed.
"Coupled to SDM"
The absolute DDM value changes, if the SDM is changed. The DDM
value expressed in dB stays constant.
Remote command:
[:SOURce<hw>]:ILS[:GS|GSLope]:DDM:COUPling on page 553
5.4.3 ILS Localizer Settings
Access:
1. Select "ILS > General".
2. Select "ILS Component > Localizer".
Settings
● General Settings .................................................................................................. 134
● Signal Settings...................................................................................................... 136
● Amplitude Settings................................................................................................ 138
● COM/ID Settings................................................................................................... 141
5.4.3.1 General Settings
Access:
1. Select "ILS Component > Localizer", see Chapter 5.4.3, "ILS Localizer Settings",
on page 134.
ILS Configuration and Settings