Generating More Than 2 Pulse Trains Using CompactDAQ

[John_P1]

Overview

This example shows how to generate four pulse trains of the same frequency and  out of 90 degree phase on cDAQ 9178.

Description

The CompactDAQ 9172 chassis has 2 counters on the back plane. This limits the user to 2 separate pulse train generation tasks for all modules on the chassis. This example program demonstrates the use of correlated digital output to create 4 pulse trains of the same frequency that are 90º out of phase. This example was written for the NI-9401 High-Speed Bidirectional Digital I/O Module, but may work with other modules as well. Please note that the module must be in slot 1,2,3, or 4 for this example to run.

Requirements

 Software

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

 Hardware

• NI cDAQ-9178

• NI cDAQ module(e.g.NI-9401)

 Steps to Implement or Execute Code

  1.Insert NI-9401 into 1,2,3 or 4 slot of cDAQ 9178.

  2.Configure the following settings in the block diagram.

   (1)Select the port to output pulse trains.

   (2)Set the frequency you want to generate

  3.Run the VI.

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