R&S SMJ100A, Operating Manual

Page: 326 / 874

Instrument Function
R&S
®
SMJ100A
310 Operating Manual 1403.7458.32 ─ 14
5.7.4 I/Q Level - Info...
The signal power and the crest factor of the baseband signal at the I/Q output connec-
tors are indicated in the dialog box "Baseband Info". This information is needed, for
example, to use the I/Q signal externally and to adjust the power correctly there, or to
see how the signal is modulated.
The information provided in this dialog box depends on the baseboard version your
instrument is equipped with:
●
Up to baseboard version DacBoard 1141.8090.xx the calculated values of the sig-
nal power are displayed only, as described in Chapter 5.7.4.1, "Baseband Signal
Level" , on page 310.
●
From baseboard version DacBoard 1141.8190.02 or higher, monitoring the mea-
surement with or without interfering is possible. See Chapter 5.7.4.2, "Baseband
Signal Power Measurement" , on page 311.
To check the baseboard version of the instrument, select "Setup > System > Hardware
Config, section Baseband Assembly" (see
Chapter 5.2.3.2, "Hardware Config" ,
on page 132).
To open the "Baseband Info..." dialog for information on the baseband I/Q signal during
measurement, select "AWGN/IMP > Configure > I/Q Level > Info" or use the MENU
key under "AWGN/IMP".
5.7.4.1 Baseband Signal Level
This section applies to instruments equipped with a baseboard up to version DacBoard
1141.8090.xx .
The signal power values and the crest factor of the baseband signal at the I/Q output
connectors are displayed in the dialog.
Impairment of Digital I/Q Signal and Noise Generator - AWGN/IMP Block