97 SNA5000A Vector Network Analyzer User Manual
The marker can be used to search the maximum value, minimum value, peak value, and
target value of the trace in the specified search domain. It can also search for multi-peak value,
multi-target, bandwidth filtering, and band-stop filtering.
1. Search domain:
The search domain is the frequency span included in a marker search operation. Each
marker has an independent search domain, and the default is full span, which is the same as
the current sweep range.
The X coordinate movement range of the marker is limited in its
search domain. The user can set up up to 16 custom search domains. The search domains
are independent of each other and allowed to overlap. The search field can be set for each
marker, and multiple markers are allowed to share one search domain.
To set a custom search domain, press the
Search
button on the front panel, click the
Domain
command in the
Search
submenu, and click the
Add
command in the pop-up menu.
Then click the
Domain
command again, click and select the newly created custom search
domain in the pop-up menu, and enter the required values in the
Start
and
Stop
text boxes
below the domain command.
When the search domain of the current marker is not full span,
the indicator
"Δ" will appear on the x-axis to identify the search domain of the current marker.
To delete a user-defined search domain, click the
Domain
command, select the search domain
to be deleted in the pop-up menu, then click the
Domain
command again, and then click
Delete
in the pop-up menu. If the search domain of the marker is deleted, its search domain is
automatically set to full span.
2. Max and min search:
Press the
Search
button on the front panel and click the
Max Search
command in the
Search
submenu to move the current marker to the maximum response value in the search
domain.
Press the
Search
button on the front panel and click the
Max Search
command in
the
Search
submenu to move the current marker to the maximum response value in the search
domain.
Click the
Min Search
command to move the current marker to the minimum response
value in the search domain.
3. Peak search:
Press the
Search
button on the front panel to search the peak in the
Peak
submenu.
Before searching for the peak value, the effective peak value to be searched should be defined
first. The validity of the peak value is determined by the search domain, peak polarity, threshold,
and deviation:
Peak polarity
:
According to the polarity, the peaks are divided into two categories:
Positive and negative. The positive peak value refers to situations where
the measured value is greater than the measured value at both ends of a
span, and the negative peak value refers to the peak value that the
measured value is less than the measured value at both ends of a span.
Click the
Peak Polarity
command in the
Peak
submenu to select the
peak polarity. The
Both
option means that both positive and negative
peaks are regarded as valid peaks for the search.
Summary of Contents for SNA5000A Series
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