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Select the marker to be defined for search.
b.Search domain zone
Define the range of marker search. The default search domain is the full bandwidth. In addition, the instrument supports the search of
nine user settings. The user setting to be selected must be defined in the user domain range. The ranges of search domains set by
users are allowed to be overlapping. Various marker can be applied in one search domain. Fig. 3.39 shows a group of search domains
set by users.
Fig. 3.39 Schematic Diagram of Search Domains Set by Marker Users
c.User domain range zone
The [Start] box and [End] box within the User domain range zone are used to define the search domain set by the user.
d.Search type zone
Define the type of marker search. The analyzer supports the following 10 search types:
Minimum value:
search the minimum measurement data point.
Maximum value:
search the maximum measurement data point.
Right peak value:
search next effective peak value on the right side of the marker. The peak must be defined at first.
The peak is defined according to [Threshold] and [Offset]. The minimum peak point is defined in the [Threshold] box. The effective
peak point must be above the threshold value, and the valley points on both sides may be less than the threshold value. The minimum
vertical distance between the peak value and valley value is defined in the [Offset] box. The vertical distance between the effective
peak value and valley values on both sides must be more than the offset value. The analyzer settings in Fig. 3.40 are as follows:
Threshold: -50dB
Offset: 10dB
Scale: 10dB/grid
1) Peak A is effective, and the threshold and peak value conform to the requirements.
2) Peak B is not effective, and the offset does not conform to the requirements.
3) Peak C is not effective, and the threshold does not conform to the requirements.
