Dynamic Acquisition:Data Interpretation Property

NI Digital Waveform Generator/Analyzer Help

Edition Date: June 2013

Part Number: 370520P-01

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Short Name: DataInterpretation

Property of niHSDIO

Specifies whether you acquire high/low data or valid/invalid data during a static or dynamic acquisition session. Refer to your specific hardware documentation to understand how data is returned to you when the voltage level is above voltage level low but below voltage level high and you select High or Low.

On NI 6555/6556 devices only, you can select the following PFI channels and clocks for the active channel input of the property node using these strings: PFI1, PFI2, STROBE, and DDC_CLKOUT. These strings are not case sensitive and can be grouped with the standard input strings separated by commas. The following are examples of valid string syntax: 0, 4, 6, PFI1, 7 or 0-12, STROBE, DDC_CLKOUT.

This property is valid only for acquisition sessions.

Note   NI 654 x /656 x devices only support the high/low mode of data interpretation. NI-HSDIO returns an error if you select valid/invalid mode for an acquisition with these devices.

Related Topics

High or low (3)

The data read represents logical values (logic high or logic low).

Valid or invalid (4)

The data read represents whether channel data is within a specified voltage range.


The following table lists the characteristics of this property.

Datatype iL
High-level VIs niHSDIO Configure Data Interpretation
Channel-based Yes


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