Reference:Pretrigger Samples per Channel Property

Short Name: Ref.PretrigSamples

Property of DAQmx Trigger

Specifies the minimum number of pretrigger samples to acquire from each channel before recognizing the reference trigger. Post-trigger samples per channel are equal to SampQuant.SampPerChan minus the number of pretrigger samples per channel.

Remarks

The following table lists the characteristics of this property.

Permissions	read/write
Resettable	yes
Settable while task is running	device-specific
Available in Run-Time Engine	yes