NI 9219 Calibration Procedure
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4.
Input the external temperature using the DAQmx Set Temperature C Series Calibration VI.
5.
Obtain an array of the recommended calibration voltages for your device using the NI 9219
instance of the DAQmx Get C Series Calibration Adjustment Points VI.
6.
Configure DMM1 for a voltage measurement in the 10 V range.
7.
Enable Auto Zero on DMM1.
8.
Acquire a voltage reading with DMM1. Record this value as V
ExcitationModule
.
9.
Set the voltage source to V
ExcitationModule
.
10. Connect the NI 9219 to DMM1, DMM2, and the voltage source as shown in Figures 16 or 17 for
the appropriate test point value indicated in Table . Observe the following conditions when
connecting the equipment to the NI 9219.
•
Connect the leads of DMM1 as close as possible to the terminals on the NI 9219.
•
Connect the HI lead of DMM2 as close as possible to the same point that the HI lead of the
NI 9219 connects to the resistor network.
•
Connect the LO lead of DMM2 as close as possible to the same point that the LO lead of the
NI 9219 connects to the resistor network.
11. Configure DMM1 for a voltage measurement in the 10 V range.
12. Enable Auto Zero on DMM1.
13. Configure DMM2 for a voltage measurement in the 1 V range.
LabVIEW Block Diagram
NI-DAQmx Function Call
Call
DAQmxCSeriesSetCalTemp
with the
following parameters:
calHandle
:
calHandle
temperature
: The external temperature value in
degrees Celsius.
LabVIEW Block Diagram
NI-DAQmx Function Call
Call
DAQmxGet9219CalAdjustPoints
with
the following parameters:
calHandle
:
calHandle
adjustmentPoints
: An array of reference values.
bufferSize
: The size of the
adjustmentPoints
array in elements.