TestWare-SX Peak Valley Change Detector

The peak/valley change process is a detector process and should be sequenced in parallel with command processes.

How it works

This process lets you monitor an input signal for changes in the peaks and valleys. The process begins by detecting a peak and valley, these values become the reference levels for a tolerance range. When a peak or valley exceeds the tolerance range the process triggers. If the process is set for continuous triggers, it detects new reference levels for the tolerance setting and continues the process.

More Information

The Peak/Valley Change Detector Design window names the process and sequences it in a test template.

The Peak/Valley Change Detector Parameters window defines the peak/valley sensitivity, change tolerance, and single or continuous operation.

You can find detailed information about this process in Chapter 6 of the 790.10 TestWare-SX Application Manual.


Peak/Valley Change Detector Design Window

This window specifies when the process starts and stops. The information in this window is saved with the test template.

Using the window

Use this window to designate a single test command process in a step.

1	Name the process with the Label entry field.

2	Select a Start Trigger to sequence the process. This process should be sequenced in parallel with a command process.

3	Select an End Trigger to stop the process. Use the default none trigger if you want the process to complete without interruption.

4	Select a Control Channel for the process.

More Information

You can find detailed information about this process in Chapter 6 of the 790.10 TestWare-SX Application Manual.

Go to How it works for an overview of the process.

After you complete this window, you can double-click the name of this process in the Edit Template window to display the Peak/Valley Change Detector Parameters window. This allows you to assign parameters to the default procedure.


Peak/Valley Change Detector Parameters Window

You must create a peak/valley change detector process in a template with the Peak/Valley Change Detector Design window before you can access this window. The information in this window is saved with the test procedure.

Peak/Valley Sensitivity

Determines when a peak or valley is detected. The sensitivity setting is the amount the signal must change to detect a peak or valley. Select the units you want for the sensitivity value.

Change Tolerance

Specifies the tolerance band around the reference peak and valley values. The tolerance value represents a plus and minus deviation from the reference value.

Trigger Option

Trigger Once ends the process when the first peak or valley exceeds the tolerance setting.

Trigger Continuously issues a trigger each time a peak or valley exceeds the tolerance setting. This selection ends according to the end trigger selection.

Using the window

Enter a sensitivity value. Setting the Sensitivity too high may cause low- amplitude signal changes to be missed. Setting the Sensitivity too low may cause signal noise to be recognized as a peak/valley value.

Enter a tolerance value. This value must be larger than the sensitivity value. This value determines the requirements to issue a trigger.

Select a trigger option. The trigger option lets you issue one or more triggers.

More Information

You can find detailed information about this process in Chapter 6 of the 790.10 TestWare-SX Application Manual.

Go to How it works for an overview of the process.