Rohde & Schwarz SMU200A - Baseband Signal Level Measurement

Instrument Function
R&S
®
SMU200A
319Operating Manual 1007.9845.32 ─ 15
Crest[dB]=Peak_Level[dBFs]/Signal_Level[dBFs]
SCPI command:
[:SOURce<hw>]:BB:CFACtor on page 689
Peak Level - Digital Impairments
Indicates the peak level of the baseband signal relative to full scale of 0.5 V (in terms of
dB full scale).
SCPI command:
[:SOURce<hw>]:BB:POWer:PEAK on page 690
Signal Level (RMS) - Digital Impairments
Indicates the rms level of the baseband signal relative to full scale of 0.5 V (in terms of
dB full scale).
SCPI command:
[:SOURce<hw>]:BB:POWer:RMS on page 690
5.7.4.2 Baseband Signal Level Measurement
Information on the baseband I/Q signal during measurement is indicated in the section
"Baseband Signal Level Measurement". Level, crest factor and duration of the measure-
ment can be displayed for the signal either with or without interfering.
State - Digital Impairments - Measurement
Activates/deactivates the measurement of the digital I/Q baseband signal.
When activated, information on the peak level, rms level and crest factor are indicated.
Additionally the duration of the measurement can be set.
SCPI command:
[:SOURce<hw>]:BB:MEASurement[:STATe] on page 688
Signal Source - Digital Impairments - Measurement
Selects the signal for the measurement. The signal level and crest factor can be retrieved
either from the interference-free digital I/Q baseband signal or the signal superimposed
by the noise generator AWGN.
Impairment of Digital I/Q Signal and Noise Generator - AWGN/IMP Block