MTS Multipurpose Elite Test - Manual (Page 70)

5.4.4.0 Overriding System Setpoint and Span
With the External Command activity, you can temporarily override the default system span and setpoint
values, even if you selected Disable for the Span and Setpoint controls on the MPE Command Settings
tab (MPE > Test Definition > Command Settings).
To temporarily override setpoint and span, enable the Change Setpoints or Change Spans check box (or
both) in the External Command activity properties window, and enter span and setpoint values in the
associated entry boxes. This causes the span and setpoint values you enter to overwrite system span and
setpoint values when MPE executes the External Command activity.
The precise way the MPE applications performs the override depends on whether you select Disable or
Enable:
• If you select Disable, the controller sets span to 100% and setpoint to zero as it plays out the test until it
begins to play out the External Command activity. At that point the controller switches to the External
Command activity setpoint and span values. When the activity is done, the modified values remain in
effect for the remainder of the test. The modified values are persisted and restored if the test run is restarted.
With this selection, you cannot make adjustments to the Station Manager application’s Setpoint and Span
controls while the test is running.
• If you select Enable, the controller uses the system setpoint and span values as it plays out the test until
it begins to play out the External Command activity. At that point, the controller switches to the External
Command activity setpoint and span values. However, the modified values are not persisted. With this
selection, you can make adjustments to the Station Manager application’s Setpoint and Span controls
while the test is running.
70 Multipurpose Elite Test Design Guide
5.0 Creating Tests