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NI 4071 7½-Digit FlexDMM Calibration Procedure
You have completed verifying the AC current 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 Frequency
Note
The frequency of the NI 4071 is
not
user adjustable. If this verification
procedure indicates that the frequency is out of specification, return the NI 4071 to
NI for repair.
To verify the frequency of the NI 4071, complete the following steps:
1.
Remove all connections from the NI 4071.
Note
Polarity is
not
important in step 2.
2.
Connect a device capable of generating a pulse train at the frequencies listed in Table 27 to
the HI and LO terminals of the NI 4071. The pulse train should be 0
to 5 V and have a duty
cycle of 50%. See Table 1 for possible devices and equipment to use in this step.
3.
Call the niDMM Reset VI to reset the NI 4071 to a known state.
LabVIEW Block Diagram
C/C++ Function Call
Call
niDMM_close
with the
following parameters:
Instrument_Handle
:
The instrument
handle from
niDMM_init
LabVIEW Block Diagram
C/C++ Function Call
Call
niDMM_reset
with the
following parameter:
Instrument_Handle
:
The instrument
handle from
niDMM_init
