Searching for Positions that Match Specified Criteria

• Overview

• Setting Search Range (Bandmarkers)

• Searching in Specified Range

• Setting up Bandmarker for Each Trace Setting up Markers for Coupled Operations Between Traces

• Automatically executing search each time Sweep is done (search tracking)

• Searching for Maximum and Minimum Measured Values

• Searching for Target value

• Searching for Peak

• Searching for Multiple Peaks

• Searching for Spurious

• Searching for Multiple Spurious

Other topics about Data Analysis

Overview

You can search for a position that matches your specified criteria by using the Marker Search feature.

Marker Search allows you to search for a position that matches the following criteria:

• Maximum value

•  Minimum value

• Target (a point that has a target measurement value)

• Target nearest to marker position

• Target nearest to left-hand side of marker position

• Target nearest to right-hand side of marker position

•  Peak

•   Maximum peak (for a positive peak), minimum peak (for a negative peak)

•   Peak nearest to left-hand side of marker position

•   Peak nearest to right-hand side of marker position

• Spurious

• Spurious nearest to left-hand side of marker position

• Spurious nearest to right-hand side of marker position

Setting Search Range (Bandmarkers)

The Marker Search feature allows you to set part of the sweep range as the search target (Bandmarker feature) as well as the entire search range.

Procedure to Set Search Range

1. Press Trace Next or Trace Max to activate the trace on which you want to use the marker.

2. Press Marker Fctn (or press Marker Search).

3. To set the search range for the X-Axis, turn on Bandmarker X.

4. Set the search range using X start, X stop, X center and X span.
   
   Each value for the search range can be changed by one of the following methods.
   "   Enter a numeric value using the ENTRY block key on the front panel.
   "   Turn the rotary knob () on the front panel.
   "   Press the up or down arrow key () on the front panel.
   "   Using the mouse, click one of the buttons ( ) on the right side of the entry area.
   
   You can move the search range by dragging and dropping either one of the bandmarker position pointers ( ) above the graph (pressing the button on the object to be moved and releasing the button on the destination). You can also drag and drop the start/stop line of the search range.

5. To set the search range for the Y-Axis, turn on Bandmarker Y.

6. Set the search range using Y start, Y stop, Y center and Y span.
   
   Each value for the search range can be changed by one of the following methods.
   "   Enter a numeric value using the ENTRY block key on the front panel.
   "   Turn the rotary knob () on the front panel.
   "   Press the up or down arrow key () on the front panel.
   "   Using the mouse, click one of the buttons ( ) on the right side of the entry area.
   
   You can move the search range by dragging and dropping either one of the bandmarker position pointers ( ) above the graph (pressing the button on the object to be moved and releasing the button on the destination). You can also drag and drop the start/stop line of the search range.

Searching in Specified Range

Procedure to Set Search Range

1. Press Trace Next or Trace Max to activate the trace on which you want to use the marker.

2. Press Marker Search.

3. To perform the partial search for the stimulus value (X-Axis), press Search Range(X) to select Bandmarker.

4. To perform the partial search for the response value (Y-Axis), press Search Range(Y) to select Bandmarker.
    

   Setting	Description
   Full Range (Full Scale)	All data are obtained from all traces.
   Bandmarker (Bandmarker)	Partial data are obtained from within bandmarker.

Setting up Bandmarker for Each Trace/Setting up Markers for Coupled Operations Between Traces

The bandmarkers can be set up and moved either in coupled operation for all traces in a channel or independently for each trace.

You can set up bandmarker coupling for frequency/power measurement, transient measurement and the user window.

Bandmarker Coupling

Operational Procedure

1. Press Trace Next or Trace Max to activate the trace on which you want to use the marker.

2. Press Marker Fctn (or press Marker Search).

3. Now you can set up the bandmarker. For more information, refer to Setting Search Range (Bandmarkers).

4. Press Couple to turn the marker coupling on or off.

5. You cannot turn on the bandmarker coupling for the X-Axis.

Automatically Executing Search Each Time Sweep is Done (search tracking)

Search tracking is a function that sets a search to be repeated every time a sweep is done. This function facilitates the observation of measurement results, such as the maximum value of traces.

Operational Procedure

1. Press Trace Next or Trace Max to activate the trace on which search tracking is set up.

2. Press Marker Search.

3. Press Tracking and specify the parameters of the search tracking function.
    

   Setting	Description
   Off	Turns off search tracking function.
   Maximum value	Specifies the maximum value for search tracking function.
   Minimum value	Specifies the minimum value for search tracking function.
   Peak	Specifies the peak for search tracking function.
   Target	Specifies the target for search tracking function.
   Spurious	Specifies the spurious for search tracking function.

Searching for Maximum and Minimum Measured Values

You can search for the maximum or minimum measured value on the trace and move a marker to that point.

Searching for Maximum and Minimum Measured Values

Operational Procedure

1. Following Step1to Step3in Reading Values on Trace, activate the marker you will use to search for the maximum and minimum values.

2. Press Marker Search.

3. Press the corresponding softkey to move the marker to the maximum or minimum measured value.

Searching for Target Value (target search)

The target search function enables you to move the marker to the point that has the target measured value.

Target and Transition Types

A target is a point that has a specific measurement value on the trace. Targets can be divided into the two groups shown below depending on their transition type.

Target and Transition Types

About Target Search Function

The target search is a function that searches for a target that matches the pre-defined target value and transition type(s) (positive, negative, or both positive and negative) and then moves to the peak with maximum response value if the peak polarity is Positive or Both or to the peak with minimum response value if the peak polarity is Negative.

The following three methods are available for executing the target search:

Target Search (when transition type is set to both positive and negative)

Operational Procedure

1. Following Step1through Step3 in Reading Values on Trace, activate a marker you are using for the target search.

2. Press Marker Search.

3. Press Target.

4. Press Target Value and enter a target value in the entry box that appears.
   
   The marker target search will be executed based on the newly set target value and the transition type defined.

5. Press Target Transition.

6. Select a transition type.
    

   Softkey	Function
   Positive	Selects positive as transition type.
   Negative	Selects negative as transition type.
   Both	Selects both positive and negative as transition type.

The marker target search will be executed based on the definitions of the currently set target value and the newly set transition type. Each marker is allowed to have the peak excursion value and the peak polarity individually.

7. Press the corresponding softkey to move the marker to the target.
   
    

   Softkey	Function
   Search Target	Executes target search.
   Search Left	Executes left search.
   Search Right	Executes right search.

Searching for Peak

The peak search function enables you to move the marker to the peak on the trace.

Definitions of Peaks

A peak is a measurement point whose value is greater or smaller than the adjoining measurement points on its right and left sides. Peaks are classified into the following types depending on the difference in magnitude from the measurement points on either side of it.

About the peak search function

The peak search is a function that searches for a peak that matches a pre-defined lower limit for the peak excursion value and peak polarity (positive or negative) and then moves the marker to this peak.

The peak excursion is the smaller of the differences in measurement values from the adjoining peaks of the opposite polarity.

Positive Peak, Negative Peak and Peak Excursion

The following four methods are available for executing the peak search:

Peak Search (when peak polarity is positive)

Operational Procedure

1. Following Step1 through Step3 in Reading Values on Trace, activate a marker you are using for the peak search.

2. Press Marker Search.

3. Press Peak.

4. Press Peak Excursion and enter the lower limit for the peak excursion value.
   
   The marker peak search will be executed based on the definitions of the newly set lower limit for the peak excursion value and the currently set peak polarity.

5. Press Peak Polarity.

6. Select a peak polarity.

The marker peak search will be executed based on the definitions of the currently set lower limit for the peak excursion value and the newly set peak polarity. Each marker is allowed to have the peak excursion value and the peak polarity individually.

7. Press the corresponding softkey to move the marker to the peak.
    

   Softkey	Function
   Search Peak	Executes peak search
   Search Left	Executes left search
   Search Right	Executes right search

Searching for Multiple Peaks

The multi-peak search function enables you to display markers on multiple peaks on traces.

About Peak Search All Functions (Peak Search All)

The peak-search-all is a function that searches for peaks that match a pre-defined lower limit for the peak excursion value and peak polarity (positive or negative) and then displays the markers on these peaks. Up to 10 markers can be displayed.

The peak excursion is the smaller of the differences in measurement values from the adjoining peaks of the opposite polarity.

• About the matched to peak definition see Searching_for_Peak.

Peak Search All (when peak polarity is positive)

Operational Procedure

1. Following Step1 through Step3 in Reading Values on Trace, display the multiple markers you are using for the peak search.

2. The peak search is executed as many times as the number of markers dis­played (up to 10).

2. Press Marker Search.

3. Press Peak.

4. Press Peak Excursion and enter the lower limit for the peak excursion value.
   
   This sets the multiple peak searches to be executed based on the definitions of the newly set lower limit for the peak excursion value and the currently set peak polarity.

5. Press Peak Polarity.

6. Select a peak polarity.
    

   Softkey	Function
   Positive	Selects Positive as the peak polarity.
   Negative	Selects Negative as the peak polarity.
   Both	Selects both Positive and Negative as the peak polarity.

This sets the multiple peak searches to be executed based on the definitions of the currently set lower limit for the peak excursion value and the newly set peak polarity.
 

7. Press Search Peak All to move the marker to the peak. 

  Searching for Spurious

The spurious search function enables you to move the marker to the peak value on the trace. You can use this function when the spurious judgment is enabled. For more information, refer to Confirming Spurious.

About spurious search function

The spurious search is a function that searches for a spurious and then moves the marker to this spurious.

The following three methods are available for executing the spurious search:

Spurious Search

Operational Procedure

1. Following Step1 through Step3 in Reading Values on Trace, activate a marker you are using for the peak search.

2. Press Marker Search.

3. Press Spurious.

4. Press the corresponding softkey to move the marker to the peak.

Searching for Multiple Spurious

The multi-peak spurious function enables you to display markers on multiple spurious on traces.

About Spurious Search All Functions (Spurious Search All)

The spurious-search-all is a function that searches for spurious and then displays the markers on these spurious. Up to 10 markers can be displayed.

Spurious Search All

Operational Procedure

1. Following Step1 through Step3 in Reading Values on Trace, display the multiple markers you are using for the peak search.

2. The spurious search is executed as many times as the number of markers dis­played (up to 10).

2. Press Marker Search.

3. Press Spurious.

4. Press Search Spurious All to move the marker to the spurious.