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Verification
The following performance verification procedures describe the sequence of operation and
provide test points required to verify the NI PXIe-4322. The verification procedures assume that
adequate traceable uncertainties are available for the calibration references.
The NI PXIe-4322 has eight independent isolated analog output channels. Each channel can be
configured as voltage output mode or current output mode. You can verify either voltage or
current for any or all of the channels depending upon your desired test coverage.
Voltage Output Mode Accuracy Verification
Complete the following procedure to verify the voltage mode accuracy of the NI PXIe-4322:
1.
Connect the DMM to the TB-4322 as shown in Figure 2 for the first channel you want to
verify.
2.
Use the information in Table 3 to configure the DMM.
Table 3.
DMM Voltage Setup
Configuration
Value
Measurement
Voltage
Range
1 V (for 0 V test point)
Minimum range to measure 16 V
(for all other test points)
Digits Resolution
7.5
Aperture Time
100 ms
Autozero
On
ADC Calibration
On
Input Impedance
Offset Nulling On
10 M
Ω
DC Noise Rejection
High order
Number of Average
1
Power Line Frequency
Dependent upon the local power line characteristics.
