NI 4071 7½-Digit FlexDMM Calibration Procedure
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© National Instruments
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5
To set up the test equipment, complete the following steps:
1.
Remove all connections from the four input banana plug connectors on the NI 4071.
2.
Verify that the calibrator has been calibrated within the time limits specified in the
section, and that DC zeros calibration has been performed within the last 30
days. Consult the Fluke 5720A user documentation for instructions for calibrating these
devices.
Note
Ensure that both the calibrator and the NI 4071 (installed in a powered-on
PXI chassis) are warmed up for at least 60 minutes before you begin this procedure.
3.
Call the niDMM Initialize VI with the Instrument Descriptor of the device to create an
instrument session.
Note
You will use this session in all subsequent VI and function calls throughout
the verification procedures. For more information about using the niDMM Initialize
VI or the
niDMM_init
function, refer to the
NI Digital Multimeters Help
.
4.
Call the niDMM Configure Powerline Frequency VI.
LabVIEW Block Diagram
C/C++ Function Call
Call
niDMM_init
with the
following parameters:
Instrument_Descriptor
: The name
of the device to calibrate. You can find
this name under Devices and
Interfaces in Measurement &
Automation Explorer (MAX)
ID_Query
:
VI_FALSE
Reset
:
VI_FALSE
LabVIEW Block Diagram
C/C++ Function Call
Call
niDMM_ConfigurePowerLineFreque
ncy
with the following parameters:
Instrument_Handle
:
The instrument
handle from
niDMM_init
PowerLine Frequency
: Set this parameter
to
50
or
60
, depending on the powerline
frequency (in hertz) powering your
instruments; select
50
for 400 Hz
powerline frequencies