National Instruments 5102 User Manual

USER GUIDE
ALIBRATING THE
ALIBRATIONEXECUTIVE
NI 5102

Contents

Introduction............................................................................................. 2
What Is Calibration? ........................................................................ 2
Why Should You Calibrate? ............................................................ 2
How Often Should You Calibrate?.................................................. 2
Equipment and Other Test Requirements ...............................................3
Test Equipment ................................................................................ 3
Recommended Equipment........................................................3
Alternative Equipment.............................................................. 4
Connectors ................................................................................4
Documentation................................................................................. 4
Software ........................................................................................... 5
Test Conditions ................................................................................ 5
Calibration Procedures............................................................................ 6
Connecting Your Calibrator, DMM, and NI 5102........................... 6
Running the Calibration Executive Procedure................................. 6
Viewing the Calibration Report....................................................... 7
Technical Support Resources.................................................................. 8
NI Web Support ............................................................................... 8
Worldwide Support.......................................................................... 8
WITH
National Instruments™,NI™, and ni.com™are trademarks of National Instruments Corporation. Product and company names mentioned herein are trademarks or trade names of their respective companies.
323070A-01 Copyright © 2001 National Instruments Corp. All rights reserved. April 2001

Introduction

This document contains information and step-by-step instructions for loading and running the calibration procedure for the NI 5102 using Calibration Executive.

What Is Calibration?

Calibration consists of verifying the measurement accuracy of a device and correcting for any measurement error. Verification is measuring the performance of a device and comparing the results to the factory specifications of the device. National Instruments calibrates every 5102 device at the factory. During the factory calibration process, the calibration constants are stored on the EEPROM. These values are loaded from memory and used as needed by the device.

Why Should You Calibrate?

The accuracy of electronic components drifts with time and temperature, which can affect measurement accuracy as the device ages. Calibration restores your device to its specified accuracy and ensures that it still meets National Instruments standards.

How Often Should You Calibrate?

The measurement accuracy requirements of your application determine how often you should externally calibrate your NI 5102 device. National Instruments recommends that you perform a complete calibration at least once every year. You can shorten this interval to 90 days or six months based on the demands of your application.
You can also use the verification procedure at a regular interval to determine if your oscilloscope needs adjustment.
Calibrating the NI 5102 with Calibration Executive 2 ni.com

Equipment and Other Test Requirements

This section describes the equipment, documentation, software, and test conditions needed for calibration.

Test Equipment

Tables 1 and 2 list specifications for equipment you can use to calibrate your NI 5102 with Calibration Executive.

Recommended Equipment

Table 1 lists the equipment that National Instruments recommends for this procedure.
Table 1. Required Equipment Specifications for NI 5102 Calibration
Required
Equipment
Scope Calibrator Wav ete k 95 00
Active Head Wav ete k 95 10
Recommended
Equipment
Scope Calibrator
Active Head or better
If you do not have the recommended instruments, use the accuracy requirements listed above to select a substitute calibration standard. Refer to Table 2 for a list of alternative instruments you can use for the calibration procedure. Although these instruments are acceptable, National Instruments recommends that you use the instruments from Table 1.
Parameter
Measured
Ve r t i c a l O f f s e t 0 VDC ±0.1 mV
Ve r t i c a l G a i n DC ±40 mV to ±4.5 V, ±0.1%
AC Coupling sine wave 9–13 Hz ±100 ppm,
Bandwidth 1.5% amplitude flatness
Input Impedance 2-wire resistance accuracy of
Necessary Specifications
into 1 M
1.8 Vpp ±2%into1M
for leveled sine wave 100 kHz–15 MHz ±50 ppm,
0.2–1.9 Vpp ± 2% into 1 M
0.25% for 1 Mmeasurement
© National Instruments Corporation 3 Calibrating the NI 5102 with Calibration Executive

Alternative Equipment

Table 2 contains a list of alternative equipment you can use to calibrate your NI 5102 with Calibration Executive.
Table 2. Alternative Equipment Specifications for NI 5102 Calibration
Required
Equipment
Calibrator Fluke 5700
High-Speed Signal Generator
DMM HP 34401 Input Impedance 2-wire resistance accuracy of
Recommended
Equipment
Calibrator
Tektronix SG503 Bandwidth 1.5% amplitude flatness
Parameter
Measured
Vertical Offset 0 VDC ±0.1 mV
Ve r t i c a l G a i n DC ±40 mV to ±4.5 V, ±0.1%
AC Coupling sine wave 9–13 Hz ±100 ppm,
Necessary Specifications
into 1 M
1.8 Vpp ±2%into1M
for leveled sine wave 100 kHz–15 MHz ±50 ppm,
0.2–1.9 Vpp ± 2% into 1 M
0.25% for 1 Mmeasurement

Connectors

If you are using the Wavetek 9500 and the Active Head, you do not need special connectors.
If you are using the alternative instruments listed in Table 2, you need the following connection equipment:
50 BNC cable
50 BNC terminator
BNC T-connector

Documentation

This section describes the documentation you need to calibrate your 5102 device. In addition to this calibration procedure, you may need to refer to the following documents:
NI-SCOPE Instrument Driver Quick Reference Guide
Where to Start with Your NI 5102 Oscilloscope
NI 5102 User Manual
You can download these documents fromthe NationalInstruments Web site at
ni.com/manuals
Calibrating the NI 5102 with Calibration Executive 4 ni.com

Software

Complete the following steps to install Calibration Executive:
1. Make sure that your computer and monitor are powered on and that you have installed Windows 2000/NT/Me/9x.
2. Close all open applications.
3. Insert the installation CD into the CD-ROM drive.
4. Choose the Run option from the Start menu on the desktop task bar.
5. In the command line box, type of the CD-ROM drive you are using), and click OK.
6. Follow the instructions that appear in the dialog boxes.
The setup program installs Calibration Executive as well as the associated files listed in Table 3.

Table 3. Calibration Executive Directories and Supporting Files

Directory Name Contents
x:\setup.exe
(wherexis the letter
CalExec\Procedures\NI 5102\Limits
CalExec\Procedures\NI 5102\Support Files
CalExec\Procedures\NI 5102\Support Files

Test Conditions

Follow these guidelines to optimize the connections and the environment during calibration:
Keep connections to the NI 5102 short. Long cables and wires act as antennae, picking up extra noise that can affect measurements.
Use a 50 BNC coaxial cable for all connections to the device.
Keep relative humidity between 10 and 90%, noncondensing,
or consult your device hardware manual for the optimum relative humidity.
Maintain the temperature at 25 °C.
Allow a warm-up time of at least 15 minutes to ensure that the
measurement circuitry of the 5102 is at a stable operating temperature.
Microsoft Access database that stores the calibration limits.
Directory structure that contains the calibration procedures.
Required support files.
© National Instruments Corporation 5 Calibrating the NI 5102 with Calibration Executive

Calibration Procedures

This section explains how to set up and run the Calibration Executive procedure.
Using the Wavetek 9500 in automated mode, the calibration procedure takes approximately ten minutes. In manual mode, the procedure takes approximately 30 minutes.
Using the alternative instruments in automated mode, the calibration procedure takes approximately 20 minutes. In manual mode, the procedure takes approximately 40 minutes.

Connecting Your Calibrator, DMM, and NI 5102

The calibration procedure steps you through the connections between the calibrator, function generator, DMM, and NI 5102.
Note
You do not need a function generator or a DMM if you are using the Wavetek 9500.

Running the Calibration Executive Procedure

To run the Calibration Executive calibration procedure, complete the following steps:
1. Launch Calibration Executive and follow the instructions in the in the Calibration Configuration Wizard to load the NI 5102 calibration procedure. Refer to Chapter 1, Introduction to Calibration Executive, in the Calibration Executive Software User Manual if you need more information on configuring and loading a calibration procedure.
2. When prompted by Calibration Executive, enter information about the installed hardware, such as the calibrator, function generator, and DMM.
Note
If you are using the Wavetek 9500, you will not need a function generator or a
DMM, so you can leave Information, Selected DMM Information,andAvailable Addresses. You must also enter N/A in the appropriate fields for the tracking numbers and calibration due dates before you can proceed. The calibration report does not include any of this extra information if you are using the Wavetek 9500.
3. When the procedure is loaded, click Run Procedure to begin. The procedure prompts you to enter the device number, which is the number assigned by Measurement & Automation Explorer (MAX).
4. Follow any instructions you receive from Calibration Executive.
Calibrating the NI 5102 with Calibration Executive 6 ni.com
selected in the list boxes for Selected Generator
none

Viewing the Calibration Report

When the procedure is finished, complete the following steps to view the calibration report:
1. Click View»Reports.
2. Select View to launch your browser and view your report. The
calibration report appears as an printable HTML file.
You have completed calibrating your NI 5102 with Calibration Executive.
Note
If your NI 5102 device fails after calibration, return the device to National
Instruments for repair or replacement.
© National Instruments Corporation 7 Calibrating the NI 5102 with Calibration Executive

Technical Support Resources

NI Web Support

National Instruments Web support is your first stop for help in solving installation, configuration, and application problems and questions. Online problem-solving and diagnostic resources include frequently asked questions, knowledge bases, product-specific troubleshooting wizards, manuals, drivers, software updates, and more. Web support is available through the Technical Support section of

Worldwide Support

National Instruments has offices located around the world to help address your support needs. You can access our branch office Web sites from the Worldwide Offices section of up-to-date contact information, support phone numbers, e-mail addresses, and current events.
If you have searched the technical support resources on our Web site and still cannot find the answers you need, contact your local office or National Instruments corporate. For telephone support in the United States, dial 512 795 8248. For telephone support outside the United States, contact your local branch office:
ni.com
ni.com
. Branch office Web sites provide
Australia 03 9879 5166, Austria 0662 45 79 90 0, Belgium 02 757 00 20, Brazil 011 284 5011, Canada (Calgary) 403 274 9391, Canada (Ottawa) 613 233 5949, Canada (Québec) 514 694 8521, Canada (Toronto) 905 785 0085, China (Shanghai) 021 6555 7838, China (ShenZhen) 0755 3904939, Denmark 45 76 26 00, Finland 09 725 725 11, France 01 48 14 24 24, Germany 089 741 31 30, Greece 30 1 42 96 427, Hong Kong 2645 3186, India 91805275406, Israel 03 6120092, Italy 02 413091, Japan 03 5472 2970, Korea 02 596 7456, Malaysia 603 9596711, Mexico 5 280 7625, Netherlands 0348 433466, New Zealand 09 914 0488, Norway 32 27 73 00, Poland 0 22 528 94 06, Portugal 351 1 726 9011, Singapore 2265886, Spain 91 640 0085, Sweden 08 587 895 00, Switzerland 056 200 51 51, Taiwan 02 2528 7227, United Kingdom 01635 523545
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