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CALIBRATION PROCEDURE

NI 9252

8 AI, ±10 V, 24 bit, 50 kS/s/ch Simultaneous

This document contains the verification and adjustment procedures for NI 9252. For more
information about calibration solutions, visit 

ni.com/calibration

.

Contents

Software.................................................................................................................................... 1
Documentation.......................................................................................................................... 1
Test Equipment..........................................................................................................................2
Test Conditions..........................................................................................................................3
Initial Setup............................................................................................................................... 3
Verification................................................................................................................................3

Accuracy Verification....................................................................................................... 3

Adjustment................................................................................................................................ 5

Accuracy Adjustment........................................................................................................5

EEPROM Update......................................................................................................................6
Reverification............................................................................................................................6
Accuracy under Calibration Conditions....................................................................................6
Revision History....................................................................................................................... 7
Worldwide Support and Services.............................................................................................. 7

Software

Calibrating the NI 9252 requires the installation of NI-DAQmx 19.1 or later on the calibration
system.

You can download NI-DAQmx from 

ni.com/downloads

. NI-DAQmx supports 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.

Documentation

Consult the following documents for information about the NI 9252, NI-DAQmx, and your
application software. All documents are available on 

ni.com

 and help files install with the

software.

Summary of Contents for 9252

Page 1: ...6 Accuracy under Calibration Conditions 6 Revision History 7 Worldwide Support and Services 7 Software Calibrating the NI 9252 requires the installation of NI DAQmx 19 1 or later on the calibration system You can download NI DAQmx from ni com downloads NI DAQmx supports LabVIEW LabWindows CVI ANSI C and NET When you install NI DAQmx you only need to install support for the application software tha...

Page 2: ...ort for Visual Studio Reference information for NI DAQmx NET methods and NI DAQmx NET properties key concepts and a C enum to NET enum mapping table Test Equipment The following table lists the equipment recommended for the performance verification and adjustment procedures If the recommended equipment is not available select a substitute using the requirements listed Table 1 Recommended Equipment...

Page 3: ...ssis to the system safety ground a Attach a ring lug to a 14 AWG 1 6 mm wire b Connect the ring lug to the ground terminal on the side of the NI cDAQ 9178 using the ground screw c Attach the other end of the wire to the system 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...

Page 4: ...average samples a Create and configure an AI voltage channel according to the following NI 9252 AI Voltage Task table Table 2 NI 9252 AI Voltage Task Physical Channels Range Terminal Configuration cDAQMod8 AI0 7 10 5 V Differential b Configure the AI voltage channel timing according to the following NI 9252 Task Timing table Table 3 NI 9252 Task Timing Samples Per Channel Acquisition Mode Rate kS ...

Page 5: ... to the calibrator as shown in the Accuracy Verification section 3 Adjust the NI 9252 a Initialize a calibration session on the NI 9252 The default password is NI b Input the external temperature in degrees Celsius c Call the NI 9252 get C Series adjustment points function to obtain an array of recommended calibration voltages for the NI 9252 d Set the calibrator to a reference value determined by...

Page 6: ...ification after performing an adjustment verify that you have met the Test Conditions before returning your device to NI Refer to the Worldwide Support and Services section for assistance in returning the device to NI Accuracy under Calibration Conditions The values in the following table are based on calibrated scaling coefficients which are stored in the onboard EEPROM The following accuracy tab...

Page 7: ... Engineers Visit ni com services for information about the services NI offers Visit ni com register to register your NI product Product registration facilitates technical support and ensures that you receive important information updates from NI NI corporate headquarters is located at 11500 North Mopac Expressway Austin Texas 78759 3504 NI also has offices located around the world For support in t...

Page 8: ...s 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 other import export data NI MAKES NO EXPRESS OR IMPLIED WARRANTIES AS TO THE ACCURACY OF THE INFORMATION CONTAINED HEREIN AND SHALL NOT BE LIABLE FOR ANY ERRORS U ...

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