R&S FSQ Signal Analyzer - Rohde & Schwarz

R&S FSQ Getting Started
Measurements on Modulated Signals
6. Select the peak detector and increase the sweep time to 10 s.
➢ Press the TRACE key.
➢ Press the DETECTOR softkey.
➢ Press the DETECTOR MAX PEAK softkey.
➢ Press the SWEEP key.
➢ Press the SWEEP TIME softkey and enter 10 s.
The R&S FSQ measures the adjacent channel power generated by the burst
edges and the modulation.
Fig. 2.31 Adjacent channel power due to modulation spectrum and transient spectrum
The peak power display depends on the selected sweep time. The longer the
sweep time, the higher the probability of measuring the highest peak amplitude of
the signal.
With shorter sweep times, level dips can be seen in the time domain traces.
These level dips come from the burst characteristic of the signal. The numerical
results, however, indicate the peak amplitudes during the measurement in the
corresponding channel.
2.46 Operating Manual 1313.9681.12 - 01