SNA5000A Vector Network Analyzer User Manual 98
Threshold
:
For the positive peak, only the peak whose measured value is greater
than the threshold is considered valid; for the negative peak, only the peak
whose measured value is less than the threshold is considered valid; when
the polarity of the peak is set to
Both
, the threshold is not used as the basis
for judging the validity of the peak. To set the threshold, click the
Threshold
command in the
Peak
submenu to enter the required value.
Deviation
:
The deviation value of peak value refers to the smaller difference between the
measured value of peak value and the measured value of an adjacent peak
with the opposite polarity. Only the peak value with a deviation greater than
the rated value is considered valid. To set the deviation value, click the
Excursion
command in the
Peak
submenu to enter the required value.
After determining the effective peak range and search domain, the peak
search can be started. There are several peak searching modes available:
⚫
Using the
Peak Search
command in the
Peak
submenu, the peak with the largest
measured value among the effective positive peaks or the peak with the smallest
measured value among the effective negative peaks will be included in the search
according to the peak polarity setting. If the current peak polarity is set to
Both
, the
peak with the largest measured value among the effective positive peaks is searched.
⚫
Use the
Peak Right
→ Search
command in the
Peak
submenu to search the nearest
effective peak from the current marker position to the right.
⚫
Use the
Peak Left ← Search
command in the
Peak
submenu to search the nearest
effective peak from the current marker position to the left.
⚫
Use the
Next Peak Search
command in the
Peak
submenu to search for the
effective positive peak value next lower than the current marker measurement value
or the effective negative peak value next higher than the current marker
measurement value according to the peak polarity setting. If the current peak polarity
is set to
Both
, the effective peak next lower than the current vernier measurement
value is searched.
4. Target search:
Press the
Search
button on the front panel to search the target in the
Target
submenu.
Before searching the target, set the target value and transition type:
Target value
:
The target value refers to the response value to search (Y coordinate). If
the response value of a point on the trace is equal to the target value, then
the point is the target point to search. To set the target value, click the
Target Value
command in the
Target
submenu to enter the required value.
Transition type
:
The target points are divided into two types, positive and negative. The
positive target conversion type means that the measured value on the
Summary of Contents for SNA5000A Series
Page 2: ......
