User manual

Chapter 1 Introduction to NI-DAQ
NI-DAQ User Manual for PC Compatibles 1-2 ni.com
NI-DAQ can send event-driven messages to Windows or Windows NT
applications each time a user-specified event occurs. Thus, polling is
eliminated and you can develop event-driven DAQ applications. Some
examples of NI-DAQ user events are:
• When a specified number of analog samples has been acquired
• When the analog level and slope of a signal match specified levels
• When the signal is inside or outside a voltage band
• When a specified digital I/O pattern is matched
• When a rising or falling edge occurred on a timing I/O line
How to Set Up Your DAQ System
After you have installed your software and hardware and configured your
hardware, see Figure 1-1 to begin using NI-DAQ in your application
programs.
If you are accessing the NI-DAQ device drivers through LabVIEW, read
the NI-DAQ release notes and then use your LabVIEW Online Reference to
help you get started using the data acquisition VIs in LabVIEW.