Point Limit

• Overview

• Turning ON/OFF Point Limit

• Importing/Exporting Point Limit Data File

Other topics about Data Analysis

Overview

The point limit function allows you to define the upper and lower limits at a certain frequency point. Limits are defined in segments, where each segment is a portion of the stimulus span. Each limit segment has an upper and a lower starting limit value.

This function compares the measured data with the defined limits, and provides pass or fail information for each measured data point.

Turning ON/OFF Point Limit

 Follow the steps below to set the point limit segment and turn it ON/OFF:

1. Press Analysis key.

2. Click Point Limit > Edit Point Limit.

3. At the entry table at the bottom of the screen, enter the stimulus, lower limit and upper limit value of the desired segment.

4. Click Type ON/OFF to toggle between turning ON and OFF the segment.

To enter a new segment:

1. Click Edit Point Limit > Add.

2. A new row is added to the entry table with information identical to the previous row.

3. Change the stimulus, lower limit, upper limit value and type of the desired segment.

To delete a segment:

1. Click or highlight the segment to be deleted.

2. Click Edit Point Limit > Delete.

To delete all the point limit segments:

1. Click Edit Point Limit > Clear Point Limit Table > OK.

2. A new row is added to the entry table with information identical to the previous row.

The point limit and limit test can be used simultaneously or independently. If the Point Limit is turned ON and the Point Limit Test is turned OFF, the point limit segments (segments with TYPE set to ON) are displayed on the screen for visual comparison and adjustment of the measurement trace. However, no pass or fail status is provided. If the Point Limit is turned OFF and Point Limit Test is turned ON, the specified limits are still valid and the pass or fail status is indicated even though the point limit lines are not displayed on the screen. If both Point Limit and Point Limit Test are turned ON, the point limit segments (segments with TYPE set to ON) and the pass or fail status are displayed on the screen.

When the Point Limit > Fail Sign is set to ON, a fail sign is displayed at the centre of the screen if the measurement data point is out of the specified segment range and the test has failed.

• If the stimulus of the point limit test is not the same as the measurement points, the closest measurement point is used for judgement. In such cases, interpolation between the measurement points is not applied. However, if the stimulus of the point limit test is the center of the two measurement points, the measurement point on the right side is used for judgement.
• If the stimulus of the point limit test is out of the measurement span, it will not be considered.

Importing/Exporting Point Limit Data File

The test point limit data can be saved in *.csv format and recalled as well.

To export the test point limit data:

1. Click Edit Point Limit > Export to CSV File...

2. Default file name is LimitXX.csv.

3. Click Save to save the file at your preferred location.

To import the test point limit data:

1. Click Edit Point Limit > Import from CSV File...

2. Select the data file you.

3. Click Open to open and load the data file.