Rohde & Schwarz SGU100A, User Manual, Page: 174 / 236

Remote Control Commands
R&S
®
SGU100A
172 User Manual 1176.7726.02 ─ 09
[:SOURce]:IQ:IMPairment:STATe <State>
Activates/deactivates the impairment or correction values LEAKage, QUADrature and
IQRatio for the baseband signal prior to input to the I/Q modulator.
Parameters:
<State> 0 | 1 | OFF | ON
*RST:
0
Example: See Chapter 11.1.2, "Generating an I/Q Modulated Signal" ,
on page 140.
Options: R&S SGU-B120V/-B140V
Manual operation: See "State" on page 83
[:SOURce]:IQ:CREStfactor <Crest>
Sets the crest factor of the I/Q modulation signal.
Parameters:
<Crest> float
Range:
0 to 35
Increment: 0.01
*RST:
0
Default unit: dB
Example: See Chapter 11.1.2, "Generating an I/Q Modulated Signal" ,
on page 140
Manual operation: See "Crest Factor" on page 82
11.14 SOURce:Local Oscillator Subsystem
R&S SGU as an extension to a compatible R&S signal generator
If a R&S SGU is connected to a compatible R&S signal generator the R&S SGU acts
as an extension to the signal generator extending its frequency range. In this setup a
controller does not need to access the R&S
SGU directly. Instead, the signal generator
acts as a controller to the R&S SGU and depending on the required output signal
parameters performs all required settings automatically.
For example, if the signal generator is set to an output frequency of 15 GHz it passes
this value on to the R&S SGU. On reception of the new frequency R&S SGU blanks its
output and computes the necessary settings for the local oscillator (signal generator).
Next, the signal generator queries R&S
SGU for the required frequency and level val-
ues of the local oscillator, which answers with for example 7.5 GHz and -10 dBm. The
signal generator applies these settings to its own oscillator hardware and confirms that
the required signal is now present at its output connector by sending the apply com-
mand to the R&S
SGU. The R&S SGU unblanks its own output thus finishing the cycle.
SOURce:Local Oscillator Subsystem