R&S SMA100B - Page 606

Remote control commands
R&S
®
SMA100B
606User Manual 1178.3834.02 ─ 09
Manual operation: See "Fly Mode" on page 150
[:SOURce<hw>]:ILS[:GS|GSLope]:DDM:LOGarithmic <Logarithmic>
Sets the depth of modulation value for ILS glide slope modulation in dB.
See also [:SOURce<hw>]:ILS[:GS|GSLope]:DDM[:DEPTh] on page 607.
Parameters:
<Logarithmic> float
Range: -999.9 to 999.9
Increment: 1E-4
*RST: 0
Example: See Example "Configure and generate an ILS glide slope signal"
on page 594.
Manual operation: See "DDM Logarithmic" on page 150
[:SOURce<hw>]:ILS[:GS|GSLope]:DDM:PCT <Pct>
Sets the difference in depth of modulation between the signal of the upper lobe (90 Hz)
and the lower lobe (150 Hz). The maximum value equals the sum of the modulation
depths of the 90 Hz and the 150 Hz tone.
See also [:SOURce<hw>]:ILS[:GS|GSLope]:DDM[:DEPTh] on page 607.
Parameters:
<Pct> float
Range: -80.0 to 80.0
Increment: 0.01
*RST: 0
Example: See Example "Configure and generate an ILS glide slope signal"
on page 594.
Manual operation: See "DDM Percent" on page 151
[:SOURce<hw>]:ILS[:GS|GSLope]:DDM:POLarity <Polarity>
Sets the polarity for DDM calculation (see [:SOURce<hw>]:ILS[:GS|GSLope]:
DDM[:DEPTh] on page 607).
The DDM depth calculation depends on the selected polarity:
●
Polarity 90 Hz - 150 Hz (default setting):
DDM = [ AM(90 Hz) - AM (150 Hz) ] / 100%
●
Polarity 150 Hz - 90 Hz:
DDM = [ AM(150 Hz) - AM (90 Hz) ] / 100%
Parameters:
<Polarity> P90_150 | P150_90
*RST: P90_150
SOURce subsystem