Specifies the trigger level for the Index event. This event indicates that the analyzer has completed all acquisitions for the signal.

You do not need to use a selector string to configure or read this property for the default signal instance. Refer to the Selector Strings topic for information about the string syntax for named signals.

The default value is Active Low.

For example, when measuring S-Parameters for a DUT with event polarity set to Active Low, the index event polarity remains HIGH until VNA completes all the acquisitions for the DUT and then switches to LOW.

Remarks

The following table lists the characteristics of this property.

Short Name Index Event Level
Data type ci32.png
Permissions Read/Write
High-level VIs N/A
Resettable Yes
Active High 0

Event level is HIGH when analyzer has completed all the acquisitions for the signal.
Active Low 1

Event level is LOW when analyzer has completed all the acquisitions for the signal.