Rohde & Schwarz SMAB-B92 - Page 567

Remote Control Commands
R&S
®
SMA100B
565User Manual 1178.3834.02 ─ 05
DDM = [ AM (150 Hz) - AM (90 Hz) ] / 100%
Parameters:
<Polarity> P90_150 | P150_90
*RST: P90_150
Example: See Example "Configure and generate an ILS localizer signal"
on page 543.
Manual operation: See "DDM polarity" on page 138
[:SOURce<hw>]:ILS:LOCalizer:DDM:STEP
<DdmStep>
Sets the variation step of the DDM values.
Parameters:
<DdmStep> DECimal | PREDefined
*RST: DECimal
Example: See Example "Configure and generate an ILS localizer signal"
on page 543.
Manual operation: See "DDM Step" on page 140
[:SOURce<hw>]:ILS:LOCalizer:DDM[:DEPTh] <Depth>
Sets the difference in depth of modulation between the signal of the upper/left lobe (90
Hz) and the lower/right lobe (150 Hz). The maximum value equals the sum of the mod-
ulation depths of the 90 Hz and the 150 Hz tone.The following is true:
ILS:LOC:DDM:DEPTh = (AM(90Hz) - AM(150Hz))/100%
A variation of the DDM value automatically leads to a variation of the DDM value in dB
and the value of the instrument current.
Parameters:
<Depth> float
Range: -0.4 to 0.4
Increment: 1E-4
*RST: 0
Example: See Example "Configure and generate an ILS localizer signal"
on page 543.
Manual operation: See "DDM Depth" on page 140
[:SOURce<hw>]:ILS:LOCalizer:FREQuency <CarrierFreq>
Sets the carrier frequency of the signal.
SOURce Subsystem