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Document Type: Tutorial
NI Supported: Yes
Publish Date: Sep 6, 2006

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Write to Digital Output

6 ratings | 1.17 out of 5
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Table of Contents

  1. Description
  2. Common Applications
  3. What To Expect

Description

Frame grabbers that support triggering usually provide the capability of outputting digital signals. Other devices can then use these signals for triggering, synchronization, or troubleshooting, or simply as a generic programmed digital I/O source.

Options for digital output signals include:
  • Disabled
  • Programmed (asserted/deasserted)
  • Acquisition in progress
  • Acquisition done
  • Pixel clock, horizontal sync, or vertical sync (PCLK, HSYNC, VSYNC)
  • Frame start
  • Frame done

    Common Applications

Triggering other devices, synchronizing cameras, and many miscellaneous control or indication functions.

What To Expect


The specified digital output signal is produced on the external trigger lines or RTSI lines.
Related Links:
Signal I/O with NI-IMAQ in VB
Triggering IMAQ Acquisition Examples
6 ratings | 1.17 out of 5
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This tutorial (this "tutorial") was developed by National Instruments ("NI"). Although technical support of this tutorial may be made available by National Instruments, the content in this tutorial may not be completely tested and verified, and NI does not guarantee its quality in any way or that NI will continue to support this content with each new revision of related products and drivers. THIS TUTORIAL IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND AND SUBJECT TO CERTAIN RESTRICTIONS AS MORE SPECIFICALLY SET FORTH IN NI.COM'S TERMS OF USE (http://ni.com/legal/termsofuse/unitedstates/us/).