56
|
ni.com
|
NI 4071 7½-Digit FlexDMM Calibration Procedure
32. Reset the calibrator for safety reasons.
You have completed verifying the AC voltage of the NI 4071. Select one of the following
options:
•
If you want to continue verifying other modes, go to the
section.
•
If you do
not
want to verify other modes
and
you are performing a
post-adjustment
verification, go to the
Completing the Adjustment Procedures
section.
•
If you do
not
want to verify any additional modes
and
you are performing a
pre-adjustment
verification, call the niDMM Close VI to close the session.
Verifying 4-Wire Resistance
To verify the 4-wire resistance of the NI 4071, complete the following steps:
1.
Reset the calibrator.
2.
Connect the NI 4071 and the Fluke 5720A calibrator using the Fluke 5440 cables, as shown
in Figure 2. Table 9 lists the cable connections.
Figure 2.
Cable Connections for 4-Wire Resistance
LabVIEW Block Diagram
C/C++ Function Call
Call
niDMM_close
with the
following parameters:
Instrument_Handle
:
The instrument
handle from
niDMM_init
1
NI 4071
2
Fluke 5720A Calibrator
3
Fluke 5440 Cables
HI
LO
AUX
I/O
300V
MAX
5V
MAX
AMPS
NI PXI-4071
7
1
/
2
-Digit FlexDMM
500V MAX
CAT I
HI
LO
1kV
MAX
3A, 250V
MAX
INPUT
1kV
MAX
HI
LO
HI
LO
HI
AUX
CURRENT
GUARD
GROUND
1
2
3