Creating Two Pulse Trains 90 Degrees Out of Phase

[CharlesD]

Overview
This example program easily creates two pulse trains that are 90 degrees out of phase similar to a quadrature encoder.

Description:
Use a Multifunction DAQ board that has at least two counters capable of pulse generation - any E, M, S, X or Counter/TIO boards will work.  Select the counter that will be in-phase, and the counter that will be out-of-phase.  You must also select a Arm-Start Trigger.  This trigger ensure that the output of both counters start at the same time and that the dlays are in fact forcing the counter outputs to be 90 deg out of phase.  This trigger can come externally or other compatible internal trigger as long as the trigger route is  supported by your device.

Steps to Implement or Execute Code:

To implement this example:

1. Specify the channels to be used of the counters and the trigger source
2. Input the desired frequency
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 Output Module

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