National Instruments NI PXIe-4139 Calibration Procedure

Also see for NI PXIe-4139: Getting started guide

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National Instruments NI PXIe-4139 Calibration Procedure Manual pdf 14 page image

7. Calculate the lower and upper current measurement test limits using the followingformula:Current Measurement Test Limits = DMM Measured Current ± (|DMM MeasuredCurrent| * % of Current + Offset)8. Disconnect the DMM. Leave the PXIe-4139 output on.9. Make the necessary connections as shown in the following figure:Figure 7. Current Connection Diagram, Part 2Sense LOSense HIHILOPrecisionShuntNI-DCPower Device10. Take a current measurement using the PXIe-4139.11. Record the value from the previous step.12. Verify that the recorded PXIe-4139 value falls within the test limits.13. If more than one test point per level range is specified, repeat the previous steps for eachtest point, from setting the level to the test point on the PXIe-4139 up to this step.14. If more than one level range is specified, repeat the previous steps using the valuesspecified in each level range.Verifying 100 μA to 100 mA Current Measurement andOutputCompare a set of currents measured by a DMM to the current test points requested by thePXIe-4139.Refer to the following table as you complete the following steps.Complete this procedure only after successfully completing all previous verificationprocedures. Verify ranges in the order listed in the table.14 | ni.com | NI PXIe-4139 Calibration Procedure