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National Instruments PXI User Manual

National Instruments PXI
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CALIBRATION PROCEDURE
NI 5114
This document contains instructions for writing an external calibration procedure for the
NI PXI/PXIe/PCI-5114. For more information about calibration, visit ni.com/
calibration
.
Contents
Software.................................................................................................................................... 2
Documentation.......................................................................................................................... 3
Password................................................................................................................................... 4
Calibration Interval................................................................................................................... 4
External Calibration.......................................................................................................... 4
Self-Calibration ................................................................................................................4
Test Equipment......................................................................................................................... 4
Calibration Procedures ............................................................................................................. 5
Initial Setup....................................................................................................................... 5
Test Conditions......................................................................................................... 5
Self-Calibration ................................................................................................................6
MAX......................................................................................................................... 6
NI-SCOPE Soft Front Panel ..................................................................................... 6
NI-SCOPE ................................................................................................................ 7
Verification ....................................................................................................................... 8
Vertical Offset and Vertical Gain Accuracy............................................................. 8
Programmable Vertical Offset Accuracy ................................................................. 18
Timing Accuracy ...................................................................................................... 24
Bandwidth and Flatness............................................................................................ 27
Trigger Sensitivity .................................................................................................... 32
Adjustment........................................................................................................................ 37
Appendix A: Calibration .......................................................................................................... 41
Complete Calibration........................................................................................................ 41
Appendix B: Calibration Utilities............................................................................................. 42
MAX................................................................................................................................. 42
NI-SCOPE ........................................................................................................................43
Where to Go for Support .......................................................................................................... 43
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National Instruments PXI Specifications

General IconGeneral
Number of SlotsVaries by chassis (4, 8, 18)
Power SupplyVaries by chassis (typically AC or DC input)
Operating System SupportWindows, Linux
Typical ApplicationsAutomated test, data acquisition
CompatibilityPXI
CoolingForced air
Operating Temperature0 °C to 55 °C (Varies by module and chassis)
Relative Humidity10% to 90% noncondensing (Varies by module and chassis)

Summary

Software Requirements and Files

Required Software Versions

Lists the NI-SCOPE versions required for NI 5114 calibration.

NI-SCOPE Calibration File Locations

Details file paths and descriptions for NI-SCOPE calibration files.

Related Documentation

NI High-Speed Digitizers Getting Started Guide

Guide for NI-SCOPE installation, hardware, and programming.

NI 5114 Specifications

Contains NI PXI/PXIe/PCI-5114 specifications and calibration interval.

NI-SCOPE Readme

Provides information on operating system and application software support in NI-SCOPE.

NI High-Speed Digitizers Help

Offers detailed information about NI PXI/PXIe/PCI-5114.

NI-SCOPE LabVIEW Reference Help

Explains LabVIEW programming concepts and reference for NI-SCOPE VIs.

NI-SCOPE Function Reference Help

Reference for NI-SCOPE C functions and C properties.

Calibration Interval and Password

Password

The default calibration password for the NI 5114.

External Calibration Frequency

Recommends external calibration frequency based on accuracy needs.

Self-Calibration Usage

Explains self-calibration for compensating environmental changes.

Required Test Equipment

Equipment Specifications

Lists required equipment and their specifications for NI 5114 external calibration.

Calibration Procedure Overview

Initial Setup

Instructions for installing and configuring the device in MAX.

Test Conditions

Guidelines for optimizing connections and environment during calibration.

Self-Calibration Methods

Self-Calibration via MAX

Steps to initiate self-calibration using Measurement & Automation Explorer (MAX).

Self-Calibration via NI-SCOPE SFP

Steps to initiate self-calibration using the NI-SCOPE Soft Front Panel.

Self-Calibration via NI-SCOPE

Steps to initiate self-calibration programmatically using NI-SCOPE.

Verification Procedures

Vertical Offset and Vertical Gain Accuracy

Details verification steps and input parameters for vertical offset and gain accuracy.

Vertical Offset Accuracy Verification

Initialize Session and Configure Characteristics

Steps to initialize the session and configure channel characteristics.

Configure Vertical and Horizontal Properties

Configures common vertical and horizontal timing properties.

Commit Settings and Acquire Waveform

Commits settings, short-circuits input, and initiates waveform acquisition.

Fetch Measurement and Repeat

Fetches measurement, compares to specs, and repeats for all iterations.

Vertical Gain Accuracy Verification

Initialize Session

Steps to initialize the session and obtain a session handle.

Configure Channel and Vertical Properties

Configures input impedance and common vertical properties.

Configure Horizontal Timing and Commit

Configures horizontal properties and commits settings to hardware.

Acquire Waveform and Measure Voltage

Acquires waveform, measures positive and negative voltages for gain calculation.

Calculate Gain Error

Calculates vertical gain error and compares to published specifications.

Programmable Vertical Offset Accuracy

Initialize Session

Steps to initialize the session and obtain a session handle.

Configure Channel and Vertical Properties

Configures input impedance and common vertical properties.

Configure Horizontal Timing and Commit

Configures horizontal properties and commits settings to hardware.

Acquire Waveform and Measure Voltage

Acquires waveform and measures positive and negative voltages for offset calculation.

Calculate Offset Error

Calculates programmable vertical offset error and compares to published specifications.

Timing Accuracy Verification

Initialize Session and Configure Channels

Steps to initialize session and configure channel characteristics and vertical properties.

Configure Horizontal Timing and Commit

Configures horizontal timing and commits parameters to hardware.

Acquire Waveform and Measure Frequency

Acquires waveform and measures the frequency of the signal.

Calculate Timing Error

Calculates timing error in parts per million (ppm).

Bandwidth and Flatness Verification

Initialize Session and Configure Channels

Steps to initialize session and configure channel characteristics and vertical properties.

Configure Horizontal Timing and Commit

Configures horizontal timing and commits parameters to hardware.

Acquire Waveform and Measure RMS Voltage

Acquires waveform and measures RMS voltage for power difference calculation.

Calculate Power Difference

Calculates power difference based on measured RMS voltages.

Trigger Sensitivity Verification

Initialize Session and Configure Channels

Steps to initialize session and configure channel characteristics and vertical properties.

Configure Horizontal Timing and Trigger

Configures horizontal timing and sets up an analog edge trigger.

Acquire Waveform and Check for Timeout

Acquires waveform, checks for timeout to verify trigger sensitivity.

Device Adjustment

Obtain Calibration Session Handle

Step to obtain an instrument session handle using niScope Cal Start VI.

Adjust Vertical Range

Steps to adjust the vertical range of the device using niScope Cal Adjust Range VI.

Adjust Sample Rate

Steps to adjust the sample rate using niScope Cal Adjust VCXO VI.

Final Self-Calibration and Session End

Performing final self-calibration and ending the calibration session.

Appendix A: Calibration Overview

Complete Calibration Procedure

Describes the recommended procedure for a complete calibration.

Appendix B: Calibration Utilities

Retrieving Data Using MAX

Steps to retrieve calibration data using Measurement & Automation Explorer (MAX).

Support Information

National Instruments Website for Support

Information on accessing troubleshooting and support resources on ni.com.

National Instruments Offices and Contact

Corporate headquarters location and global office contact information.

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