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National Instruments Corporation
55
NI 4065 Calibration Procedure
3.
Call the niDMM Initialize External Cal VI with the
Instrument
Descriptor
of the NI 4065 and your valid user password to output a
calibration session (
Cal Session
) you can use to perform NI-DMM
calibration or regular measurement functions.
Notes
You will use
Cal Session
in all subsequent VI and function calls.
Use the niDMM Set Cal Password VI or the
niDMM_SetCalPassword
function to change
the password.
4.
Call the niDMM Configure Powerline Frequency VI.
Adjusting Linearization
To adjust Linearization for the NI 4065, complete the following steps:
1.
Output 1 V on the calibrator with the range locked to 2.2 V. This range
prevents a 50
calibrator output resistance from creating a voltage
divider with the internal resistance of the NI 4065.
Allow the calibrator
output to settle before proceeding
.
LabVIEW Block Diagram
C/C++ Function Call
Call
niDMM_InitExtCal
with the
following parameters:
Resource_Name
: The resource
descriptor of the NI 4065
Calibration_Password
: Your valid user
password
Instrument_Handle
:
Cal Session
LabVIEW Block Diagram
C/C++ Function Call
Call
niDMM_ConfigurePowerLineFrequency
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
frequency