Specifies whether the reference waveform is a modulated signal or a combination of one or more sinusoidal signals. To time-align the sinusoidal reference waveform to the acquired signal, set the AMPM Signal Type property to Tones, which switches the AMPM measurement alignment algorithm.

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 Modulated.

Remarks

The following table lists the characteristics of this property.

Short Name AMPM Signal Type
Data type ci32.png
Permissions Read/Write
High-level VIs N/A
Resettable Yes
Modulated 0

The reference waveform is a cellular or connectivity standard signal.
Tones 1

The reference waveform is a continuous signal comprising of one or more tones.