6
|
ni.com
|
NI PXIe-4304/4305 Calibration Procedure
Initial Setup
Refer to the
NI PXIe-4304/4305 and TB-4304 Installation Guide and Terminal Block
Specifications
for information about how to install the software and hardware and how to
configure the device in NI Measurement & Automation Explorer (MAX).
Note
When a device is configured in MAX, it is assigned a device identifier. Each
function call uses this identifier to determine which DAQ device to verify or to verify
and adjust. This document uses
Dev1
to refer to the device name. In the following
procedures, use the device name as it appears in MAX.
Note
If you are using the PXIe-4139 as a source, no self-calibration is required.
Accuracy Verification
The following performance verification procedures describe the sequence of operations and
provides the test points required to verify the PXIe-4304/4305. The verification procedures
assume that adequate traceable uncertainties are available for the calibration references.
The PXIe-4304/4305 has 32 independent analog input channels. You can verify the accuracy of
any or all of the channels depending upon your desired test coverage.
Complete the following steps to verify the voltage mode accuracy of the PXIe-4304/4305.
1.
Set the PXIe-4139 voltage output to zero volts.
2.
Connect the PXIe-4139 and PXI-4071 to the TB-4304 as shown in Figure 2.
3.
Use Table 3 to configure the PXIe-4139 to output a Test Point value for the appropriate
range shown in Table 6, beginning with the values in the first row.
Table 3.
PXIe-4139 Voltage Output Setup
Configuration
Value
Function
Voltage output
Sense
Remote
Range
600 mV range for test points of 0 V
60 V range for all other test points
Current Limit
20 mA
Current Limit Range
200 mA
