Rohde & Schwarz SGU100A, User Manual, Page: 175 / 236

Remote Control Commands
R&S
®
SGU100A
173 User Manual 1176.7726.02 ─ 09
R&S SGU as an upconverter for any signal generator
If, on the other hand, the R&S SGU is connected to an incompatible signal generator
the controller has to perform the above steps instead of the signal generator. We
assume that a remote PC (controller) is connected to both the R&S
SGU and the sig-
nal generator (local oscillator). When changing any parameters which affect the output
signal of the combined system of local oscillator and R&S
SGU the controller has to
follow these steps:
Setting the signal of the R&S SGU
1. Set the parameters of the R&S SGU like frequency and level as needed.
2. Query the local oscillator frequency and the local oscillator level from R&S SGU
with the SCPI commands
[:SOURce]:LOSCillator:FREQuency?
and
[:
SOURce]:LOSCillator:POWer?
.
3. Interpret the result and apply the required changes to the LO.
4. Send the SCPI command
[:SOURce]:SETTings:APPLy[:IMMediate]
to
R&S SGU to output the signal.
See Chapter 11.1.3, "Advanced Task for Optimizing Performance" , on page 142 for an
example.
[:SOURce]:LOSCillator:FREQuency?
............................................................................... 173
[:SOURce]:LOSCillator:POWer?
...................................................................................... 173
[:SOURce]:LOSCillator:FREQuency?
Queries the frequency of the local oscillator input signal.
See Chapter 11.14, "SOURce:Local Oscillator Subsystem" , on page 172 for a descrip-
tion of the setting process.
Return values:
<Frequency> float
Range:
1E+6 to 20E+9
Increment: 1E-3
*RST:
1E+9
Usage: Query only
Manual operation: See "Frequency" on page 86
[:SOURce]:LOSCillator:POWer?
Queries the level of the local oscillator input signal.
See Chapter 11.14, "SOURce:Local Oscillator Subsystem" , on page 172 for a descrip-
tion of the setting process.
SOURce:Local Oscillator Subsystem