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CALIBRATION PROCEDURE

NI 9265

4-Channel, 0–20 mA, 16-Bit Analog Current Output Module

This document contains the verification and adjustment procedures for the National Instruments 
9265. For more information on calibration solutions, visit 

ni.com/calibration

.

Contents

Software.................................................................................................................................... 1
Documentation.......................................................................................................................... 2
Test Equipment......................................................................................................................... 3
Test Conditions......................................................................................................................... 3
Initial Setup............................................................................................................................... 3
Verification............................................................................................................................... 4

Accuracy Verification....................................................................................................... 4

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

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

EEPROM Update ..................................................................................................................... 6
Reverification ........................................................................................................................... 6
Accuracy Under Calibration Conditions .................................................................................. 6
Worldwide Support and Services ............................................................................................. 7

Software

Calibrating the NI 9265 requires the installation of NI-DAQmx 9.6 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.

Summary of Contents for NI 9265

Page 1: ...s 3 Initial Setup 3 Verification 4 Accuracy Verification 4 Adjustment 5 Accuracy Adjustment 5 EEPROM Update 6 Reverification 6 Accuracy Under Calibration Conditions 6 Worldwide Support and Services 7 Software Calibrating the NI 9265 requires the installation of NI DAQmx 9 6 or later on the calibration system You can download NI DAQmx from ni com downloads NI DAQmx supports LabVIEW LabWindows CVI A...

Page 2: ...uctions and Specifications NI 9265 specific information specifications and calibration interval NI DAQmx Readme Operating system and application software support in NI DAQmx LabVIEW Help LabVIEW programming concepts and reference information about NI DAQmx VIs and functions NI DAQmx C Reference Help Reference information for NI DAQmx C functions and NI DAQmx C properties NI DAQmx NET Help Support ...

Page 3: ... 9265 temperature will be greater than the ambient temperature Keep relative humidity below 80 Allow a warm up time of at least 10 minutes to ensure that the NI 9265 measurement circuitry is at a stable operating temperature Initial Setup Complete the following steps to set up the NI 9265 1 Install NI DAQmx 2 Make sure that the NI cDAQ 9178 power source is not connected 3 Insert the module into sl...

Page 4: ...the DMM as shown in Figure 1 Figure 1 NI 9265 Current Accuracy Connections 3 Set the DMM to read DC current in the 20 mA range 4 Acquire a sample a Create and configure an AO current task on the NI 9265 according to Table 2 b Start the task c Generate a current output according to Table 3 d Wait the appropriate amount of time for the DMM measurement to settle e Read the NI 9265 output current meas...

Page 5: ...e DMM and the bench top power supply to the NI 9265 as shown in Figure 1 e Set the DMM to read DC current in the 20 mA range f Call and configure the NI 9265 setup calibration function with the DAC value obtained from the array of recommended calibration currents g Wait the appropriate amount of time for the DMM measurement to settle h Read the NI 9265 output current measurement from the DMM i Cal...

Page 6: ...ing your device to NI Refer to Worldwide Support and Services 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 table is valid for calibration under the following conditions Ambient temperature 23 C 5 C NI 9265 installed in sl...

Page 7: ...d phone assistance from NI Application Engineers Visit ni com services for NI Factory Installation Services repairs extended warranty and other services Visit ni com register to register your National Instruments product Product registration facilitates technical support and ensures that you receive important information updates from NI A Declaration of Conformity DoC is our claim of compliance wi...

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