IviScopeAcLineTrigger Extension Group
In addition to the fundamental capabilities, the IviScopeAcLineTrigger extension group defines extensions for oscilloscopes that are capable of synchronizing the trigger with the AC Line.
AC Line triggering occurs when the oscilloscope detects a positive zero crossing, negative zero crossing, or optionally either positive or negative zero crossing on the network supply voltage.
IviScopeAcLineTrigger VI
IviScope Configure AC Line Trigger Slope [AT]
IviScopeAcLineTrigger Property
IviScope AC Line Trigger Slope