Other topics about Data Analysis
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 any of the following criteria.
Maximum peak (for a positive peak), minimum peak (for a negative peak)
Peak on the left-hand side nearest to marker position
Peak on the right-hand side nearest to marker position
Target nearest to the marker position
Target on the left-hand side nearest to marker position
Target on the right-hand side nearest to marker position
The Marker Search feature allows you to set part of the sweep range as the search target (Partial Search feature) as well as the entire search range. For the Partial Search feature, you can select whether to couple traces in the channel.
Press Channel Next (or Channel Prev) and Trace Next (or Trace Prev) to activate the trace for which you want to set the search range.
Press Marker Search > Search Range.
Click Couple to toggle ON/OFF trace coupling within the search range.
Press Channel Next (or Channel Prev) and Trace Next (or Trace Prev) to activate the trace for which you want to set the search range.
Press Marker Search > Search Range.
Click Search Range to turn ON the Partial Search feature.
Click Start, then enter the start value (lower limit) of the search range.
Click Stop, then enter the stop value (upper limit) of the search range.
Search tracking is a function that sets a search to be repeated every time a sweep is done even if the execution key for the search (maximum, minimum, peak, and target) is not pressed. This function facilitates observation of measurement results such as the maximum value of traces (e.g., the insertion loss of a band pass filter).
Press Channel Next (or Channel Prev) and Trace Next (or Trace Prev) to activate the trace on which you want to set up the search tracking.
Press Marker Search key.
Click Tracking and turn the search tracking function ON/OFF.
You can search for the maximum or minimum measured value on the trace and move a marker to that point.
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Search for maximum (Max) |
Move active marker to point on the trace where measured value is the greatest |
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Search for minimum (Min) |
Move active marker to point on the trace where measured value is the lowest |
Activate the marker you are using to search for the maximum and minimum values.
Press Marker Search key.
Click the corresponding softkey to move the marker to the maximum or minimum measured value.
When the data format is in Smith chart or polar format, execute the search only for the main response value.
The peak search function enables you to move the marker to the peak on the trace.
A peak is a measurement point of which the value is greater or smaller than the adjoining measurement points on its right and left sides. Peaks are classified into the following two types depending on the differences in magnitude from the measurement points on either side of it.
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Positive peak |
A peak of which the measured value is greater than the measurement points on either side of it (peak polarity: positive) |
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Negative peak |
A peak of which the measured value is smaller than the measurement points on either side of it (peak polarity: negative) |
The peak excursion value is smaller among the differences in the measured values from the adjoining peaks of the opposite polarity.
The following three methods are available for executing the peak search:
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Peak search |
Moves the marker to the maximum peak when peak polarity is Positive or Both. Moves the marker to the minimum peak when peak polarity is Negative. |
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Left search |
Executes the search from current marker position to the smaller stimulus values and moves the marker to first peak encountered. |
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Right search |
Execute the search from current marker position to the larger stimulus values and moves the marker to first peak encountered. |
Activate the marker you are using for the peak search.
Press Marker Search key.
Click Peak > Peak Excursion.
Enter the lower limit for the peak excursion value. This sets the peak search to be executed based on the definitions of the newly set lower limit for the peak excursion value and the currently set peak polarity.
Click Peak Polarity.
Select a peak polarity. This sets the peak search to be executed based on the definitions of the currently set lower limit for the peak excursion value and the newly set peak polarity.
Click the corresponding softkey to move the marker to the peak.
When the data format is in Smith chart or polar format, execute the search for the main response value of the two marker response values.
The multi-peak search function enables you to display markers on multiple peaks on traces.
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.
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Positive peak (Positive) |
A peak of which the measurement value is greater than the measurement points on either side of it (peak polarity: positive) |
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Negative peak (Negative) |
A peak of which measurement value is smaller than the measurement points on either side of it (peak polarity: negative) |
The multi-peak search is a function that searches for peaks that match with pre-defined lower limit for the peak excursion value and peak polarity (positive or negative) and then displays the markers on the peaks being searched. Depending on number of detected peaks, markers 1 through 9 are displayed from the start frequency.
The peak excursion is the smaller of the differences in measurement values from the adjoining peaks of the opposite polarity.
When the multi-peak search is executed, search and tracking settings for markers 1 through 9 are ignored and the settings for the multi-peak search are used. Note that the reference marker is not affected.
Positive Peak/Negative Peak and Peak Excursion
Multi-peak Search (when peak polarity is positive)
Activate the marker you are using for the multi-peak search.
Press Marker Search > Multi Peak > Peak Excursion
Enter the lower limit for the peak excursion value.
This causes the multi-peak search to be executed based on the definitions of the newly set lower limit for the peak excursion value and currently set peak polarity.
Press Peak Polarity.
Select a peak polarity from positive, negative or both.
This causes the multi-peak search to be executed based on the definitions of the currently set lower limit for the peak excursion value and newly set peak polarity.
Press Search Multipeak to move the marker to the peak.
When the data format is Smith chart or polar format, execute the search for the main response value of the two marker response values.
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 the marker to that target.
A target is a point that has a specific measured value on the trace. Targets can be divided into the two groups shown below depending on their transition type.
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Transition type: Positive (Positive) |
When the value of the target is larger than the measured value that immediately precedes it (on the left side) |
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Transition type: Negative (Negative) |
When the value of the target is smaller than the measured value that immediately precedes it (on the left side) |
The following three methods are available for executing the target search:
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Target search (Search Peak) |
The marker 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. |
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Search left (Search Left) |
Executes the search from the current marker position to the smaller stimulus values and moves the marker to first encountered target. |
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Search right (Search Right) |
Executes the search from the current marker position to the larger stimulus values and moves the marker to first encountered target. |
Activate the marker you are using for the target search.
Press Marker Search key.
Click Target > Target Value
Enter the target value in the entry area that appears. This causes the target search to be executed based on the definitions of the newly set target value and the currently set transition type.
Click Target Transition.
Select a transition type. This sets the target search to be executed based on the definitions of the currently set target value and the newly set transition type.
Press the corresponding softkey to move the marker to the target.
When the data format is in Smith chart or polar format, execute the search for the main response value of the two marker response values.
The multi-target search function enables you to display a marker on each point having the target measurement value.
A target is a point that has a specific measurement value on the trace. Targets can be divided into two groups shown below depending on their transition type.
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Positive
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When the value of the target is larger than the measurement value that immediately proceeds it (on the left side). |
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Negative |
When the value of the target is smaller than the measurement value that immediately proceeds it (on the left side). |
Target and Transition Types
The multi-target search is a function that searches for targets that match to pre-defined target value and transition type(s) (positive, negative, or both of positive and negative) and displays markers on the targets being searched.
Depending on the number of detected targets, markers 1 through 9 are displayed from the start frequency.
When the multi-target search is executed, search and tracking settings for markers 1 through 9 are ignored and the settings for the multi-target search are used. Note that the reference marker is not affected.
Multi-target Search (when transition type is set to "both positive and negative")
Activate the marker you are using for target search.
Press Marker Search > Multi Target > Target Value.
Enter a target value in the entry box that appears.
This causes the target search to be executed based on the target value newly set and the transition type defined at this point.
Press Target Transition.
Selects a transition type from positive, negative or both.
This causes the target search to be executed based on the target value set at this point and the transition type newly set.
Press Search Multi Target to move the marker to the target.
When the data format is in Smith chart or polar format, execute the search for the main response value of the two marker response values.