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This topic contains information for calibrating the National Instruments 9237 using Calibration Executive.
Calibration Executive Procedure Features:
|Adjustment||Manual Mode||Selectable Test Points
Approximate Test Time: 6 minutes
|Test Equipment|||||Test Conditions|||||Device Setup|||||Test Limit Equations|
The following table lists the test equipment required for calibrating NI 9237 modules.
|Calibrator||Fluke 5700A||If this instrument is unavailable, use a high-precision voltage source with an accuracy of at least 10 ppm and an output impedance of ≤ 50 Ω.|
|DMM||NI 4070||If this instrument is unavailable, use a multiranging 6 1/2 digit DMM with an accuracy of at least 40 ppm.|
|Bridge Completion Accessories||NI 9949,
350 Ω resistors
|Use one NI 9949 screw terminal accessory and two 350 Ω resistors with at least 1% tolerance.|
The following setup and environmental conditions are required to ensure the NI 9237 meets published specifications.
|Note If the NI 9237 module fails after calibration, return it to NI for repair or replacement.|
The following test limits are derived from the published specifications found in the NI 9237 Calibration Procedure.
TestLimits = TestValue ± (TestValue * GainError + OffsetError)