Rohde & Schwarz ZVL series - Optimization; Optimizing the Measurement Speed

R&S ZVL Measurement Examples
Optimization
Operating Manual 1303.6580.32-05
108
Optimization
Optimizing the Measurement Speed
Minimizing the measurement time per sweep contributes to a high measurement throughput. The following
parameters have an influence on the sweep time:
To find the best set of sweep points...
Limit the measurement to the stimulus range that you need for your device:
 Click Channel - Center or Span to access the submenu defining the sweep range.
 To define a sweep range confined by a start and a stop frequency, use Start and Stop. Alternatively,
to define a sweep range of definite width around a known center frequency (e.g. an expected peak),
use Center and Span.
 Alternatively, use the marker functions to define the sweep range.
Use the minimum number of points that will produce an acceptable resolution:
 Click Channel – Sweep – Number of Points and reduce the number of sweep points.
Use the segmented sweep to focus on different subranges of the sweep, using optimized channel settings
for each subrange:
 Set up a segmented frequency sweep as described in Segmented Frequency.
 Optimize the number of points and the noise reduction settings for each individual sweep segment.
The sweep time increases with the Frequency Step Size.
To find the appropriate noise reduction settings...
Use the fastest IF filter that will produce acceptable dynamic range:
 Press the PWR BW key or click Channel – Pwr Bw to access the corresponding submenu.
 Select the widest bandwidth compatible with your measurement task.
 If possible, click Fine Adjust to further increase the bandwidth. Select the Fast filter type unless a
Normal filter is required for your measurement.
Reduce the number of repeated measurements made to obtain an averaged result. Averaging does not
slow down the measurement, however, several consecutive sweeps must be performed until an average
result is available.
 If averaging is not necessary, open the Channel – Power Bandwidth Average menu and make sure
that Average On is not active.
 Alternatively, click Average Factor and reduce the factor to a minimum.