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.
