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Example Code

Two-Signal Edge-Separation with Different Sources

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

Overview
This code allows the user to change the source signal for a Two-Signal Edge-Seperation measurement from the internal clock, to a different signal.

Description:
This code was developed for use in detecting a signal (called the 'Source' signal) that arrives after a start signal, but before a second.  In this case, the second signal was derived from the first by delaying it with a length of wire to around 200ns.  With the start and stop signals configured, a third signal was to be detected.  A time measurement wasn't of critical importance, just rising edges of the source signal.
This code was created using the Two-Signal Edge-Separation example code included with LabVIEW 2012.  It has been simplified and stripped down to only include Two-Signal Edge-Separation.

Steps to Implement or Execute Code:
To implement this example:

  1. Define the counter, the new source of the signal and the start and stop edges
  2. Wire the DAQ based on the wiring configuration of Two-Signal Edge-Separation
  3. Run the VI
  4. (Optional) Turn on the Highlight Execution to see the flow of the VI

To execute this example:

  1. Install the required software.
  2. Connect the DAQ hardware that supports the Counter features
  3. Confirm the connection with the MAX with TestPanel
  4. Open the VI and refer the Implement Steps


Requirements
Software
LabVIEW 2012 or compatible
NI-DAQmx 9.0 or compatible

Hardware
cDAQ with C series Counter Input Module

 

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

Bobby Breyer
Applications Engineer
National Instruments

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