Remote Control Commands > SOURce Subsystem > SOURce:ILS Subsystem > [:SOURce]:ILS[:GS|GSLope]:DDM:DIRection
[:SOURce]:ILS[:GS|GSLope]:DDM:DIRection <Direction>
[:SOURce]:ILS:LOCalizer:DDM:DIRection <LocDirection>

Selects the simulation mode for the ILS-GS / ILS-LOC modulation signal.A change of the setting automatically changes the sign of the DDM value

Parameters:
<LocDirection>
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 (ILS-LOC)

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).

*RST:LEFT
<GsDirection>
UP| DOWN
UP

The 150-Hz modulation signal is predominant, the DDM value is negative (the airplane is too low, it must climb).

DOWN

The 90-Hz modulation signal is predominant, the DDM value is positive (the airplane is too high, it must descend).

*RST:UP
Example: ILS:DDM:DIR UP

'The airplane is too low, it must climb.

Options: Option R&S SMA-K25
Manual operation: See "Fly - ILS-LOC Modulation"

 


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