Common Analysis and Display Functions
R&S
®
FSW
577User Manual 1173.9411.02 ─ 43
Detector Abbrev. Description
Average Av Calculates the linear average of all samples contained in a sweep point.
To this effect, R&S FSW uses the linear voltage after envelope detection. The
sampled linear values are summed up and the sum is divided by the number of
samples (= linear average value). For logarithmic display, the logarithm is
formed from the average value. For linear display, the average value is dis-
played. Each sweep point thus corresponds to the average of the measured
values summed up in the sweep point.
The average detector supplies the average value of the signal irrespective of
the waveform (CW carrier, modulated carrier, white noise or impulsive signal).
Sample Sa Selects the last measured value of the levels measured at the individual fre-
quencies which are displayed in one sample point; all other measured values
for the frequency range are ignored
Quasi Peak QP Resembles the behavior of an analog voltmeter by analyzing the measured
values for a sample point. The quasipeak detector is especially designed for
the requirements of EMI measurements and is used for analyzing pulse-sha-
ped spurious.
The quasipeak detector displays the maximum signal level weighted to
CISPR 16-1-1 that was detected during the dwell time.
This detector is only available for the CISPR filter, and only if the R&S FSW
EMI measurement option (K54) is installed.
The quasipeak detector is not available for an RBW of 1 MHz.
CISPR Aver-
age detector
The CISPR Average detector displays a weighted average signal level accord-
ing to CISPR 16-1-1.
The average value according to CISPR 16-1-1 is the maximum value detected
while calculating the linear average value during the specified dwell time.
This detector is only available for the CISPR filter, and only if the R&S FSW
EMI measurement option (K54) is installed.
RMS Average
detector
The RMS Average detector is a combination of the RMS detector (for pulse
repetition frequencies above a corner frequency) and the Average detector (for
pulse repetition frequencies below the corner frequency).
The CISPR Average detector is only available for the CISPR filter, and only if
the R&S FSW EMI measurement option (K54) is installed.
The result obtained from the selected detector for a sweep point is displayed as the
value at this frequency point in the trace.
Trace Configuration
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