R&S ZVL GUI Reference
Channel Menu
Operating Manual 1303.6580.32-06
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is described by the following sweep segment file:
The sweep segment file actually contains more columns listing all channel settings of the individual
sweep segments. The headings of the additional columns read:
Source Power [dBm]; IF Bandwidth [Hz]; enIF Selectivity; en IF Sideband; Meas Delay [
µ
s]; boSweep
Time Auto;
Number of Points
Sets the total number of measurement points per sweep. The minimum number of points is 2.
Together with the sweep range defined with the Center, Span settings, this parameter defines the grid of
sweep points. The sweep points are equidistantly distributed over the entire sweep range: The step width
between two consecutive sweep points is constant on a linear scale (sweep type Lin. Frequency) or on a
logarithmic scale (sweep type Log. Frequency).
In Segmented Frequency sweeps, the number of points can be set independently for each segment; see
Define Segments.
As an alternative to the Number of Points, the Stimulus Step Size can be set.
Measurement time and screen resolution
A large number of points improves the resolution of the trace but increases the measurement time.
The overall measurement time is composed of a hardware settling time at the beginning of the sweep plus
the sum of the measurement times at each individual sweep point. This implies that the measurement time
increases roughly linearly with the number of points.
After changing the channel settings or selecting another measured quantity, the analyzer needs some
time to initialize the new sweep. This preparation period increases with the number of points and
the number of partial measurements involved. It is visualized by a Preparing Sweep symbol in the
status bar:
All analyzer settings can still be changed during sweep initialization. If necessary, the analyzer
terminates the current initialization and starts a new preparation period.
Remote control:
Frequency Step Size
Sets the distance between two consecutive frequency sweep points.
The step size is an alternative to the Number of Points setting:
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