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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

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 Reference

9

©

National Instruments Corporation

322614f.qxp  11/23/2004  10:13 AM  Page 9

Содержание Instrument Driver NI-DMM

Страница 1: ...name ViBoolean IDQuery NIDMM_VAL_TRUE NIDMM_VAL_FALSE ViBoolean resetDevice NIDMM_VAL_TRUE NIDMM_VAL_FALSE ViString Option String Simulate 0 RangeCheck 1 QueryInstrStatus 1 Cache 1 ViSession vi Refer...

Страница 2: ...te ViInt32 WaveformPoints Measurement Options ICON TYPE PARAMETER VALUE TO SET COMMENTS ViSession vi Session handle ViReal64 Powerline Default 60 Hz Frequency niDMM Configure Powerline Frequency niDMM...

Страница 3: ...entSource Configures the current source for diode measurements on the NI 4070 4071 4072 niDMM Configure Frequency Voltage Range niDMM_ConfigureFrequencyVoltageRange Specifies the expected maximum ampl...

Страница 4: ...e values on the NI 4072 niDMM Perform Open Cable Comp niDMM_PerformOpenCableComp Performs the open cable compensation measurements and returns open cable compensation conductance and susceptance value...

Страница 5: ...to either rising edge or falling edge polarity niDMM Configure Meas Complete Dest niDMM_ConfigureMeasCompleteDest Specifies the destination of the Measurement Complete MC signal niDMM Configure Sampl...

Страница 6: ...s ViInt32 Number to Read Default 4 ViReal64 Measurements Output ViInt32 Actual Number Output niDMM Read Multi Point niDMM_ReadMultiPoint Acquires multiple measurements and returns an array of measured...

Страница 7: ...surements Output ViInt32 Actual Number Output niDMM Fetch Multi Point niDMM_FetchMultiPoint Returns an array of values from a previously initiated multipoint measurement niDMM Fetch niDMM_Fetch Return...

Страница 8: ...are Revision Output niDMM Revision Query niDMM_revision_query Returns the revision numbers of the instrument driver and instrument firmware niDMM Self Test niDMM_self_test Performs a self test on the...

Страница 9: ...nal 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...

Страница 10: ...put ViInt32 Year Output ViInt32 Hour Output ViInt32 Minute Output niDMM Get Cal Date and Time niDMM_GetCalDateAndTime Returns the date and time of the last calibration performed on the NI 4070 4071 40...

Страница 11: ...nts Corporation 11 NI DMM Instrument Driver Quick Reference National Instruments Corporation Initialize Configure Hardware Read Close Session Initiate Fetch DMM Programming Flow 322614f qxp 11 23 2004...

Страница 12: ...ther product and company names mentioned herein are trademarks or trade names of their respective companies For patents covering National Instruments products refer to the appropriate location Help Pa...

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