National Instruments NI 4070/4072 6 1/2-Digit FlexDMM User Manual

31. Reset the calibrator for safety reasons.

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

•

If you want to continue verifying other modes, go to the Verifying 
4-Wire Resistance

 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.

To verify the 4-wire resistance of the NI 4070/4072, complete the 
following steps:

1.

Reset the calibrator.

2.

Fasten the connectors on one end of each Fluke 5440 cable to the 
appropriate banana plug connectors on the NI 4070/4072. Fasten the 
connectors on the other end of each Fluke 5440 cable to the appropriate 
calibrator binding posts. Figure 2 shows the Fluke 5440 cables. Table 7 
lists the cable connections.

Figure 2.  Cable Connections for 4-Wire Resistance

1

NI 4070/4072

2

Fluke 5700A/5720A Calibrator

3

Fluke 5440 Cables

300V

MAX

1A, 250V

MAX

300V

MAX

5V

MAX

AMPS

INPUT 

SENSE

W 4W

6½-Digit FlexDMM

CAT II

 

V

W

SENSE

V

Ω

OUTPUT

V

ΩA

AUX

CURRENT

GUARD

GROUND

1

2

3