Rohde & Schwarz FSV3000, Руководство пользователя

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Common analysis and display functions
R&S
®
FSVA3000/ R&S
®
FSV3000
580 User Manual 1178.8520.02 ─ 08
video
signal
s1 s2 s3 s4 s5 s6 s8 s1
video
signal
s1 s2 s3 s4 s5 s6 s8 s1
Measurement point n
Video
Signal
Meas. point n+1
MAX PEAK
AUTO PEAK
MIN PEAK
SAMPLE
RMS
AVG
You can define the trace detector to be used for the individual traces manually, or the
R&S
FSV/A can select the appropriate detector automatically.
The detectors of the R&S FSV/A are implemented as pure digital devices. All detectors
work in parallel in the background, which means that the measurement speed is inde-
pendent of the detector combination used for different traces.
RMS detector and VBW
If the RMS detector is selected, the video bandwidth in the hardware is bypassed.
Thus, duplicate trace averaging with small VBWs and RMS detector no longer occurs.
However, the VBW is still considered when calculating the sweep time. This leads to a
longer sweep time for small VBW values. Thus, you can reduce the VBW value to ach-
ieve more stable trace curves even when using an RMS detector. Normally, if the RMS
detector is used, the sweep time should be increased to get more stable traces.
Auto detector
If the R&S FSV/A is set to define the appropriate detector automatically, the detector is
set depending on the selected trace mode:
Trace mode Detector
Clear Write Auto Peak
Max Hold Positive Peak
Min Hold Negative Peak
Average Sample Peak
View –
Blank –
Trace configuration