NI USB-443x Calibration Procedure
14
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5.
Initialize the AI calibration using the DAQmx Initialize External Calibration VI as shown below.
Note
Refer to the NI-DAQmx function parameters for the LabVIEW input values.
6.
Perform the AI calibration adjustment by selecting the DAQmx Adjust DSA AI Calibration VI
from the DAQmx Adjust DSA AI Calibration Polymorphic VI as shown below.
7.
Disable the calibrator output.
Table 16.
AI Adjustment Configuration for NI USB-443
x
Configuration
Value
Minimum value
–10.0
Maximum value
10.0
Terminal configuration
Pseudodifferential
Acquisition mode
Continuous
Rate
1000.0
Coupling
AC
Physical channel
Dev_name/ai
x
*
*
Dev_name is the name shown for the NI USB-443
x
in MAX.
x
refers to the channel number: 0:3 for the
NI USB-4431, and 0:4 for the NI USB-4432.
LabVIEW Block Diagram
NI-DAQmx Function Call
Call
DAQmxInitExtCal
with the following
parameters:
deviceName
:
Dev_name
password
:
NI
calHandle
:
&myCalHandle
LabVIEW Block Diagram
NI-DAQmx Function Call
Call
DAQmxAdjustDSAAICal
with the following
parameters:
calHandle
:
myCalHandle
referenceVoltage
:
6.3
inputsShorted
:
False
