Rohde & Schwarz SMU200A - Page 619

Remote Control Commands
R&S
®
SMU200A
599Operating Manual 1007.9845.32 ─ 15
[:SOURce<hw>]:BB:ARB:MCARrier:CARRier:SPACing <Spacing>
The command sets the frequency spacing between adjacent carriers of the multi carrier
waveform. The carriers are generated symmetrically around the RF carrier. The maxi-
mum carrier spacing is limited to Carrier spacing = Total baseband bandwidth /(Num-
ber of carriers - 1).
The total baseband bandwidth is 80 MHz.
Note:In order to avoid wrap-around problems, the effective "Carrier Spacing" might be
slightly modified. The "Carrier Spacing" is rounded in that way that the carrier closest to
the center RF frequency shows no phase jump assuming that the carrier is unmodulated.
●
For odd number of carriers:
RoundedCarrierSpacing=1/OutputSignalDuration* round(CarrierSpacing * Output-
SignalDuration);
●
For even number of carriers:
RoundedCarrierSpacing=2/OutputSignalDuration*round(0.5 *CarrierSpacing * Out-
putSignalDuration);
Parameters:
float
0 Hz to 50 MHz
0.01 Hz
10 kHz
<Spacing>
Range:
Increment:
*RST:
BB:ARB:MCAR:CARR:SPAC 10 MHz
sets a carrier spacing of 10 MHz.
Example:
[:SOURce<hw>]:BB:ARB:MCARrier:CARRier<ch>:DELay <Delay>
The command sets the start delay of the selected carrier.
Parameters:
float
-1.0 to 1.0
1 ns
0 s
s
<Delay>
Range:
Increment:
*RST:
Default unit:
BB:ARB:MCAR:CARR15:DEL 5us
sets a start delay of 50 us for carrier 15.
Example:
[:SOURce<hw>]:BB:ARB:MCARrier:CARRier<ch>:FILE <File>
The command selects the file with I/Q data to be modulated onto the selected carrier.
Parameters:
<file name><File>
SOURce Subsystem