Instrument Driver Quick Start Guide

Utility (continued)

ICON TYPE PARAMETER VALUE TO SET, COMMENTS

ViInt32 Function DC volts, AC volts, and so on

ViReal64 Range Input

ViReal64 Resolution Input

ViReal64 Measurement Input

ViChar [ ] Mode String Output

ViChar [ ] Range String Output

ViChar [ ] Data String Output

ViSession vi Session handle

ViReal64* Digits Output (3.5/4.5/5.5/6.5)

ViSession vi Session handle

ViBoolean Message Box Default = Do not show dialog

(Only applies to LV)

ViStatus* Error Code Input/Output

ViChar [ ] Error Message Output

Calibration

ICON TYPE PARAMETER VALUE TO SET, COMMENTS

ViSession vi Session handle

ViInt32 Area Default = Internal

ViInt32* Count Output

niDMM Get Cal Count

(niDMM_GetCalCount)

Returns the calibration count for the specified type of calibration.

niDMM Self Cal

(niDMM_SelfCal)

Executes the self-calibration routine to maintain measurement accuracy on the

NI 4070/4071/4072.

niDMM Error Message

(niDMM_error_message)

Takes the error cluster returned by the VIs, interprets it, and returns it as a

user-readable string.

niDMM Get Digits Of Precision

(niDMM_GetDigitsOfPrecision)

Returns the digits of precision calculated from the range and resolution information

specified in niDMM Configure Measurement.

niDMM Format Measurements Absolute

(niDMM_FormatMeasAbsolute)

Formats the measurement to the proper number of displayed digits.

NI-DMM Instrument Driver Quick Reference9

National Instruments Corporation

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