Remote Control Commands
R&S
®
SMA100B
563User Manual 1178.3834.02 ─ 05
Manual operation: See "COM/ID State" on page 142
[:SOURce<hw>]:ILS:LOCalizer:DDM:COUPling <Coupling>
Selects if the DDM value is fixed or is changed with a change of sum of modulation
depths (SDM, see [:SOURce<hw>]:ILS:LOCalizer:SDM on page 568).
Parameters:
<Coupling> FIXed | SDM
*RST: FIXed
Example: See Example "Configure and generate an ILS localizer signal"
on page 543.
Manual operation: See "DDM - SDM Coupling" on page 140
[:SOURce<hw>]:ILS:LOCalizer:DDM:CURRent <Current>
Sets the DDM value alternatively as a current by means of the ILS indicating instru-
ment. The instrument current is calculated according to:
DDM µA = DDM × 857,1 µA
A variation of the instrument current automatically leads to a variation of the DDM
value and the DDM value in dB.
Parameters:
<Current> float
Range: -9.6775E-4 to 9.6775E-4
Increment: 1E-7
*RST: 0
Example: See Example "Configure and generate an ILS localizer signal"
on page 543.
Manual operation: See "DDM Current" on page 140
[:SOURce<hw>]:ILS:LOCalizer:DDM:DIRection <Direction>
Sets the simulation mode for the ILS-LOC modulation signal. A change of the setting
automatically changes the sign of the DDM value.
Parameters:
<Direction> LEFT | RIGHt
LEFT
The 150 Hz modulation signal is predominant, the DDM value is
negative (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
positive (the airplane is too far to the left, it must turn to the
right).
SOURce Subsystem
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