Rohde & Schwarz SMAB-B92 - Page 141

Avionic Standards
R&S
®
SMA100B
139User Manual 1178.3834.02 ─ 05
2. Select "ILS > Amplitude".
This dialog comprises amplitude settings related to the ILS localizer component of
the ILS signal.
Settings
FlyMode...................................................................................................................... 139
Sum of Depth.............................................................................................................. 139
DDM - SDM Coupling..................................................................................................140
DDM Step....................................................................................................................140
DDM Current...............................................................................................................140
DDM Depth................................................................................................................. 140
DDM Logarithmic........................................................................................................ 141
DDM Percent...............................................................................................................141
FlyMode
Selects the simulation mode for the ILS localizer modulation signal. A change of the
setting automatically changes the sign of the DDM value.
This setting simulates the direction in which the pilot has to correct the course.
"Left"
The 150 Hz modulation signal is predominant, the DDM value is neg-
ative (the airplane is too far to the right, it must turn to the left).
"Right"
The 90 Hz modulation signal is predominant, the DDM value is posi-
tive (the airplane is too far to the left, it must turn to the right).
Remote command:
[:SOURce<hw>]:ILS:LOCalizer:DDM:DIRection on page 563
Sum of Depth
Sets the arithmetic sum of the modulation depths of the left lobe (90 Hz) and right lobe
(150 Hz) ILS localizer signal contents.
ILS Configuration and Settings