National Instruments NI 4070/4072 6 1/2-Digit FlexDMM 用户手册

14. Call 

niDMM_ConfigureMeasurement

 with the following 

parameters:

•

Function = 

NIDMM_VAL_AC_CURRENT

•

Range = 

1

•

Resolution = 

1e–6

15. Call 

niDMM_Read

. Verify that this measurement falls between the 

limits listed in Table 20.

16. Output 1 A at 1 kHz on the calibrator.

17. Call 

niDMM_Read

. Verify that this measurement falls between the 

limits listed in Table 20.

You have completed verifying the AC current of the NI 4070/4072. Select 
one of the following options:

•

If you want to continue verifying other modes, go to the Verifying 
Frequency section.

•

If you do not want to verify other modes and you are performing a 
post-adjustment verification, go to the 

 section. 

•

If you do not want to verify any additional modes and you are 
performing a pre-adjustment verification, call 

niDMM_close

 to close 

the session.

The frequency of the NI 4070/4072 is not user adjustable. If this verification 

procedure indicates that the frequency is out of specification, return the NI 4070/4072 
to NI for repair.

This verification procedure is optional and requires additional test 
equipment. If you do not want to verify frequency, select one of the 
following options:

•

If you are calibrating an NI 4072 and want to continue verifying other 
modes, go to the 

 section.

•

If you do not want to verify other modes and are performing a 
post-adjustment verification, go to the 

 section.

•

If you do not want to verify any additional modes and you are 
performing a pre-adjustment verification, call 

niDMM_close

 to close 

the session.