Home Community Example Programs Example Code Document

Example Code

cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 
ASK A QUESTION

Write Multiple Waveforms to File

by: Member
‎08-15-2014 02:02 PM
Last Edited by: Member LindyHop ‎01-30-2017 10:21 AM

Products and Environment

This section reflects the products and operating system used to create the example.

To download NI software, including the products shown below, visit ni.com/downloads.

    Hardware

  • Data Acquisition (DAQ)

    Software

  • LabVIEW

    Driver

  • NI DAQmx

Code and Documents

Attachment

Download All

Overview

This example shows how to write multiple waveforms from a single acquisition to file using the Write Waveforms to File VI and then reading that data back in.

 

Description

When you write a waveform directly to file from a DAQ Assistant and then read it back in you only get the last "chunk" of data that was pulled from the devices buffer. This code provides a work around for reading waveforms back from a file by writing all of your data out as a single "chunk" so that it is read back in its entirety.

 

Requirements

Software

  • LabVIEW 2012 or compatible
  • NI-DAQmx 9.5.5 or compatible

Hardware

  • NI Multifunction DAQ Device with at least 3 AI channels

 

Steps to Implement or Execute Code

  1. Specify a file path on the Front Panel
  2. Configure the DAQ Assistant to use your hardware. This example takes readings on three seperate channels.

 

Additional Information or References

 

FrontPanel.PNGBlockDiagram.PNG

 

 **This document has been updated to meet the current required format for the NI Code Exchange.**

Jonathan L.
Technical Support Senior Group Manager
National Instruments

Example code from the Example Code Exchange in the NI Community is licensed with the MIT license.

0 Kudos