Frequency Domain Smoothing - Teledyne T3SP Series Operator's Manual

T3SP-Series Operator's Manual

6. Frequency Domain Smoothing

Figure 10: Result Visualization Window shows with smoothing turned
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OFF (left) and ON (right), the video bandwidth is 200 MHz.
To achieve smoothing of frequency domain traces, a moving average filter
can be activated. The degree of averaging is specified by means of the Video
bandwidth, which can be setup via the menu entry Extras Change Video
Bandwidth of the Result Visualization Window. The set value is retained
from then on and saved in project mas files.
The term video bandwidth actually comes from RF spectrum analysis, but
is used accordingly in this context. The default value is 20 MHz. The cur-
rent bandwidth is shown in the Result Visualization Window, if smoothing is
activated in frequency domain measurement.
An example of a smoothed trace is shown in Fig. 10. The left plot shows
the original curve, while the smoothed trace is shown on the right. The
video bandwidth is set to 200 MHz. To switch frequency domain smoothing
ON/OFF, open the Advanced tab of the Options Dialog (see section 2.5.4).
The smoothing functionality can be used in all frequency domain measure-
ment modes.
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