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NI PXIe-4304/4305 Calibration Procedure
e.
Clear the task.
f.
Compare the resulting average to the
Lower Limit
and
Upper Limit
values in Table 6.
If the result is between these values, the device passes the test.
6.
For each value in Table 6, repeat steps 3 through 5 for all channels.
7.
Set the PXIe-4139 output to be zero volts.
8.
Disconnect the PXIe-4139 and PXI-4071 from the TB-4304.
Adjustment
The following performance adjustment procedure describes the sequence of operations required
to adjust the PXIe-4304/4205.
Complete the following steps to adjust the accuracy of the PXIe-4304/4205.
1.
Set the PXIe-4139 output to be zero volts.
2.
Connect the PXIe-4139 and PXI-4071 to the TB-4304 as shown in Figure 2.
3.
Call the DAQmx Initialize External Calibration function with the following parameters:
Device In
:
Dev1
Password
1
:
NI
4.
Call the 4304/4305 instance of the DAQmx Setup SC Express Calibration function with the
following parameters:
calhandle in
: calhandle output from DAQmx Initialize External Calibration
rangeMax
: Appropriate Range Max starting with the first Test Point value in Table 7
rangeMin
: Appropriate Range Min starting with the first Test Point value in Table 7
physical channels
:
dev1/ai0:31
Table 6.
Voltage Measurement Accuracy Limits
Range (V)
Test
Point (V)
Lower Limit (V)
Upper Limit (V)
Minimum
Maximum
-42
42
-39.9
DMM Reading - 0.019263 V
DMM R 0.019263 V
-42
42
0
DMM Reading - 0.0045 V
DMM R 0.0045 V
-42
42
39.9
DMM Reading - 0.019263 V
DMM R 0.019263 V
1
The default password is NI, which can be changed. Refer to the
NI-DAQmx Help
for details.
