Upconverter Settings
R&S
®
SGU100A
82
User Manual 1176.7726.02 ─ 09
Figure 7-4: Positive quadrature offset in the I/Q constellation diagram
7.3.2
General I/Q Settings
► To access the settings of the I/Q modulator, select "SGMA-GUI > Instrument Name
> I/Q Settings > General".
Comprises the settings for setting the state and the analog wideband I/Q input.
Mod State
Switches the I/Q modulation on and off.
Remote command:
Crest Factor
Sets the crest factor of the I/Q modulation signal.
The crest factor gives the difference in level between the peak envelope power (PEP)
and average power value (RMS) in dB. This value is necessary for the generation of
the correct output power at the RF output, i.e. the instrument uses the PEP value to
compensate the average power.
I/Q Modulation and Signal Impairment