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CALIBRATION PROCEDURE
NI 9220
This document contains the verification and adjustment procedures for the NI 9220. In this
document, the NI 9220 with spring terminal and the NI 9220 with DSUB are referred to
inclusively as the NI 9220. For more information about calibration solutions, visit
.
ni.com/calibration
Contents
Software Requirements............................................................................................................. 2
Documentation.......................................................................................................................... 2
Test Equipment......................................................................................................................... 3
Test Conditions......................................................................................................................... 3
Initial Setup............................................................................................................................... 3
Verification............................................................................................................................... 4
Adjustment................................................................................................................................ 5
EEPROM Update ..................................................................................................................... 6
Re-Verification ......................................................................................................................... 6
Accuracy Under Calibration Conditions .................................................................................. 7
NI Services ............................................................................................................................... 7
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Summary of Contents for National Instruments 9220
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Page 1: Table Of Contents
This document contains the verification and adjustment procedures for the NI 9220. In this document, the NI 9220 with spring terminal and the NI 9220 with DSUB are referred to inclusively as the NI 9220. For more information about calibration solutions, visit ni.com/calibration... -
Page 2: Software Requirements
Software Requirements Calibrating the NI 9220 requires the installation of NI-DAQmx 9.6 or later on the calibration system. You can download NI-DAQmx from . NI-DAQmx supports ni.com/downloads ™ ™ LabVIEW, LabWindows /CVI , ANSI C, and .NET. When you install NI-DAQmx, you only need to install support for the application software that you intend to use. -
Page 3: Test Equipment
The following setup and environmental conditions are required to ensure the NI 9220 meets published specifications. • Keep connections to the NI 9220 as short as possible. Long cables and wires act as antennae, picking up extra noise that can affect measurements. •... -
Page 4: Verification
Verification The following performance verification procedure describes the sequence of operation and test points required to check the NI 9220 and assumes that adequate traceable uncertainties are available for the calibration references. Accuracy Verification Complete the following procedure to determine the As-Found status of the NI 9220. -
Page 5: Adjustment
Repeat steps 3 through 6 for each Test Point in Table 4. Set the calibrator to Standby mode (STBY). Disconnect the NI 9220 from the calibrator. 10. Repeat steps 1 through 9 for each channel on the NI 9220. Adjustment The following performance adjustment procedure describes the sequence of operation required to adjust the NI 9220. -
Page 6: Eeprom Update
Call the NI 9220 get C Series adjustment points function to obtain an array of recommended calibration voltages for the NI 9220. Set the calibrator to a reference value determined by the array of recommended calibration voltages. Set the calibrator to Operate mode (OPR). -
Page 7: Accuracy Under Calibration Conditions
For patents covering NI products/technology, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or the National Instruments Patents Notice at ni.com/patents. You can find information about end-user license agreements (EULAs) and third-party legal notices in the readme file for your NI product. Refer to the Export Compliance Information at ni.com/legal/export-compliance for the NI global trade compliance policy and how to obtain relevant HTS codes, ECCNs, and...