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PDC 2000/3000 Repair Manual
Testing&Adjustment
3. PDC-2000 Testing and Adjustment
LabView
Overview
LabView is a graphical application program designed by National Instrument. It is used to
graphically program instrumentation systems for data acquisition and control, data analysis,
and data presentation. This application program offers an innovative method in which a
design engineer can graphically assemble software modules called virtual instruments (VI's)
instead of writing text-based programs. VI's can be used to acquire data from plug-in boards
and programmable instruments such as PDC 2000/3000 digital cameras. VI's can also be
assembled to analyze data and to present results through graphical user interfaces.
A LabView virtual instrument (VI) consists of:
•
Front Panel
•
Block Diagram
•
Icon/Connector
The following paragraphs only gives an overview of the LabView components necessary to
design a test program. Refer to the LabView User's Guide for more detailed information
pertaining to the LabView components necessary to design a test program.
Front Panel
The front panel is the user interface. It serves as an interactive interface for supplying
inputs to and observing outputs from the instrumentation system. LabView makes
creating a front panel as simple as drawing a picture and gives the user a variety of
controls and indicators to use.
When the VI is completed, the user uses it to control his/her system - even while the VI is
running - by clicking a switch, moving a slide, tweaking a knob, or entering a value from
the keyboard, the front panel responds immediately, providing real-time feedback from the
instrumentation system.
Once the necessary information is entered or selected from the applicable front panel, the
user then starts the VI by clicking on the
Start
button. It then performs the test and
displays its results in the Test Status window on the front panel. Refer to the applicable
Testing and Adjustment section for a detailed explanation of the PDC 2000/3000 front
panel.
