NI PXI-4070 Calibration Procedure
10
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Verification Procedures
You can use the verification procedures described in this section for both
pre-adjustment and post-adjustment verification. The steps of each
verification procedure must be performed in the order listed; however, you
can omit entire sections (for example, the entire
section), if necessary.
The parameters
Range
,
Resolution
, and
Sample Interval
used in function
calls throughout this section have floating point values. For example, if
Range
=
1
, the floating point value is
1.0
. The parameters
Trigger Count
,
Sample Count
,
Array Size
, and
ParamValue
have integer values. Refer
to the
NI Digital Multimeters Help
for more information.
Note
Many of the parameter values listed in this document are expressed in scientific
notation. Some programming languages do not support the direct entry of numbers in this
format. Care must be taken to properly enter these values with the appropriate number of
zeros. For example, the scientific notation number 10e–6 must be entered as
0.00001
, and
the number 100e3 must be entered as
100000
. If your programming language supports
numeric entries in scientific notation, NI recommends that you use this feature to minimize
possible data entry errors.
Setting Up the Test Equipment
Note
The
section is necessary for pre-adjustment
verifications only. If you are performing a post-adjustment verification, skip the setup and
go directly to the
section.
To set up the test equipment, complete the following steps:
1.
Remove all connections from the four input banana connectors on the
NI 4070.
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 5700A/5720A user documentation for instructions on
calibrating these devices.
Note
Ensure that both the calibrator and the NI 4070 (installed in a powered-on PXI
chassis) are warmed up for at least 30 minutes before you begin this procedure.
3.
Call
niDMM_init
with the resource name of the device to create a
Session
.
