High-Speed Data Acquisition without CVI 8.1 or later

[Eric_B.]

Description

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Introduction

CVI 8.1 introduced the TDM Streaming Library which includes easy-to-use functions to write to TDMS data files.  The TDMS file structure allows you to stream data to disk at a high rate of speed, which is perfect for applications where a large amount of data is being acquired.  However, prior to CVI 8.1, this functionality is not included.  NI has developed a TDM C DLL which can be used by any programming language that can interface with a C DLL to write TDM and TDMS files.  This example shows an example of high-speed data acquisition using the functions provided by this TDM C DLL.

Steps to Complete

This example uses multithreading and a thread-safe-queue to put the acquisition in one thread and the file writing in a separate thread.

Additional Notes

Example created using CVI 9.0.1, but can be recreated in earlier versions using the source file and header file.

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