National Instruments NI 9227 User Manual Download

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CALIBRATION PROCEDURE

NI 9227

This document contains the verification

and adjustment procedures for the National

Instruments 9227. For more information about calibration solutions, visit

ni.com/

calibration

Contents

Software

Calibrating the NI 9227 requires the installation of NI-DAQmx 9.3 or later on the calibration
system. You can download NI-DAQmx from

ni.com/downloads

. NI-DAQmx supports

LabVIEW, LabWindows

™

/CVI

™

, C/C++, C#, and Visual Basic .NET. When you install

NI-DAQmx, you only need to install support for the application software that you intend to use.

Summary of Contents for NI 9227

Page 1: ...Matching Verification 6 Phase Matching Verification 8 Adjustment 9 Accuracy Adjustment 9 EEPROM Update 10 Reverification 10 Accuracy Under Calibration Conditions 10 Worldwide Support and Services 11 S...

Page 2: ...ctions and Specifications NI 9227 specific information specifications and calibration interval NI DAQmx Readme Operating system and application software support in NI DAQmx LabVIEW Help LabVIEW progra...

Page 3: ...device Use twisted pairs wire to eliminate noise and thermal offsets Maintain an ambient temperature of 23 C 5 C The device temperature will be greater than the ambient temperature Keep relative humid...

Page 4: ...em safety ground 4 Install the module in slot 8 of the NI cDAQ 9178 chassis Leave slots 1 through 7 of the NI cDAQ 9178 chassis empty 5 Connect the NI cDAQ 9178 chassis to your host computer 6 Connect...

Page 5: ...Figure 1 Accuracy Verification Connections 3 Set the calibrator current to a Test Point value indicated in Table 4 4 Set the calibrator to Operate mode OPR 5 Acquire and average samples a Create and c...

Page 6: ...are derived using the values in Table 13 Gain Matching Verification Complete the following procedure to determine the As Found status of the NI 9227 1 Connect the NI 9227 to the function generator as...

Page 7: ...hannel to channel gain difference to the maximum limit of 0 13 dB 7 Disable the function generator 8 Disconnect the calibrator from the device If the Gain Matching verification procedure determines th...

Page 8: ...he function generator 5 Acquire samples a Create and configure an AI current task according to Table 9 b Configure the task timing according to Table 10 c Start the task Table 8 Function Generator Con...

Page 9: ...peration required to adjust the NI 9227 Accuracy Adjustment Complete the following procedure to adjust the accuracy performance of the NI 9227 Note Completing the Accuracy adjustment procedure adjusts...

Page 10: ...g an external calibration setting the C Series calibration temperature and closing the external calibration Reverification Repeat the Verification section to determine the As Left status of the device...

Page 11: ...d in Table 4 are derived using the values in Table 13 Note For operational specifications refer to the most recent NI 9227 Operating Instructions and Specifications online at ni com manuals Worldwide...