Acquiring, Analyzing, And Presenting; Completing The Application; Developing An Application Using Labview - National Instruments Isolated Analog Input Device NI PXI-4224 User Manual

Data acquisition (daq) devices with integrated signal conditioning

Table of Contents

Except where otherwise stated, the VIs in Table 5-2 are located on the Functions»

Note

All Functions»NI Measurements»DAQmx - Data Acquisition subpalette and

accompanying subpalettes in LabVIEW.

Acquiring, Analyzing, and Presenting

After configuring the task and channels, you can start your acquisition, read

measurements, analyze the data returned, and display it according to the

needs of your application. Typical methods of analysis include digital

filtering, averaging data, performing harmonic analysis, applying a custom

scale, or adjusting measurements mathematically.

NI provides powerful analysis toolsets for each NI ADE to assist

non-programmers in performing advanced data analysis. After you acquire

the data and perform any required analysis, it is useful to display the data

in a graphical form or log it to a file. NI ADEs provide easy-to-use tools for

graphical display, such as charts, graphs, slide rules, and gauge indicators.

NI ADEs have tools that allow you to save the data to files such as

spreadsheets for easy viewing, ASCII files for universality, or binary files

for smaller file sizes.

After you have completed the measurement, analysis, and presentation of

the data, it is important to stop and clear the task. This releases any memory

used by the task and frees up the DAQ hardware for use in another task.

This section describes in more detail the steps shown in Figure 5-1, such as

how to create a task in LabVIEW and configure the channels of the

NI PXI-4224. For further instructions, select Help»VI, Function, &

How-To Help from the LabVIEW menu bar.

5-5

Chapter 5

Using the NI PXI-4224

NI PXI-4224 User Manual

Table of Contents