Example Vis; Acquiring Data For Example Vis; Configuring Daq Hardware Used With Examples - National Instruments Order Analysis Toolset User Manual

Chapter 1 Introduction to the LabVIEW Order Analysis Toolset

Example VIs

Acquiring Data for Example VIs

Configuring DAQ Hardware Used with Examples

LabVIEW Order Analysis Toolset User Manual
If you have experience with order analysis, the example VIs, located in
the
examples\Order Analysis
the LabVIEW Order Analysis Toolset. The example VIs illustrate the
following LabVIEW Order Analysis Toolset functions for both analog
and digital tachometer signal processing:
• Acquiring data
• Presenting data
• Gabor order tracking
• Resample order tracking
The example VIs use VIs found on the LabVIEW Order Analysis Toolset
palettes and illustrate the basic capabilities of the LabVIEW Order
Analysis Toolset.
For most of the example VIs, you can use prerecorded data or data you
acquire with data acquisition (DAQ) hardware. The example VIs that
accept either prerecorded data or acquired data have a Boolean control
named Data Source. The Data Source control has two choices, Example
and DAQ. When you choose Example, the VI uses prerecorded data
generated during a fan run-up as the data source. When you choose DAQ,
the VI uses data you acquire with DAQ hardware.
When acquiring data through DAQ hardware, National Instruments
recommends you follow the following guidelines:
• Use an anti-aliasing filter before data acquisition to avoid the
frequency alias.
• Sample the data from different channels simultaneously to maintain
the phase relationship between channels, such as a tachometer signal
and a vibration signal.
The example VIs that accept both prerecorded data and acquired data use
either an analog tachometer signal or a digital tachometer signal. The front
panel of the example VI specifies the type of tachometer signal the VI uses,
for example, Gabor Order Tracking (Analog Tach) or Gabor Order
Tracking (Digital Tach). Depending on whether the example is an analog
tachometer example or a digital tachometer example, when Data Source is
directory, can help you learn how to use
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