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CALIBRATION PROCEDURE

NI cDAQ Chassis

This document contains information for calibrating the National Instruments cDAQ chassis. For more 
information on calibration, visit 

ni.com/calibration

.

Contents

Software Requirements........................................................................................................................ 1
Documentation Requirements.............................................................................................................. 1
Calibration Interval .............................................................................................................................. 2
Test Equipment .................................................................................................................................... 2
Test Conditions .................................................................................................................................... 2
Calibration Procedures......................................................................................................................... 2

Initial Setup.................................................................................................................................. 3
Verification .................................................................................................................................. 3

Where to Go for Support ..................................................................................................................... 4

Software Requirements

Calibrating the NI cDAQ chassis requires installing the latest NI-DAQmx driver on the calibration 
system. You can download the NI-DAQmx instrument driver from 

ni.com/downloads

. NI-DAQmx 

supports programming an External Calibration in the LabVIEW, LabWindows

/CVI

, C/C++, C#, and 

Visual Basic .NET. application development environments (ADEs). When you install NI-DAQmx, you 
only need to install support for the ADE that you intend to use.

Documentation Requirements

For information about NI-DAQmx and NI cDAQ chassis, you can consult the following documents:

DAQ Getting Started

 guides—These guides provide instructions for installing and configuring 

NI-DAQ devices.

NI DAQmx Help

—This help file contains general information about measurement concepts, key 

NI-DAQmx concepts, and common applications that apply to all programming environments.

NI-DAQmx C Reference Help

—This help file contains C reference and general information about 

measurement concepts. 

The documents above are installed with NI-DAQmx. You also can find the latest versions of the 
documentation at 

ni.com/manuals

.

NI cDAQ-91xx User Guide and Specifications

—This document includes detailed information 

about your NI cDAQ chassis and provides the published specification values for NI cDAQ chassis. 
Refer to the most recent User Guide and Specifications online at 

ni.com/manuals

 for 

specifications.

ni.com/manuals

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tsch

Français

Summary of Contents for cDAQ

Page 1: ...support for the ADE that you intend to use Documentation Requirements For information about NI DAQmx and NI cDAQ chassis you can consult the following documents DAQ Getting Started guides These guides provide instructions for installing and configuring NI DAQ devices NI DAQmx Help This help file contains general information about measurement concepts key NI DAQmx concepts and common applications t...

Page 2: ...ature will be greater than the ambient temperature Keep relative humidity below 90 Allow a warm up time of at least 10 minutes to ensure that the measurement circuitry is at a stable operating temperature Calibration Procedures The calibration process includes the following steps 1 Initial Setup Install the device and configure it in Measurement Automation Explorer MAX 2 Verification Verify the ex...

Page 3: ... the C Series module Figure 1 NI 9401 and NI 9402 Pin Assignments 2 Create and configure a counter output channel according to Table 2 3 Start the generation of a square wave 4 Configure the counter to measure frequency and use a 1 MΩ impedance 5 Take a measurement of the square wave 6 Compare the counter reading to the limits in Table 3 Table 2 Counter Output Configuration Frequency Scaled Units ...

Page 4: ...on development self help resources to email and phone assistance from NI Application Engineers National Instruments corporate headquarters is located at 11500 North Mopac Expressway Austin Texas 78759 3504 National Instruments also has offices located around the world to help address your support needs For telephone support in the United States create your service request at ni com support and fol...

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