Measurement Computing LabVIEW Rev.3.0 - Manual (Page 14)

3-4 10-03-02 IOtech LabVIEW Substitution VIs
6. Right-click on AI Start; then repeat steps 2 through 4. At what would be step 5, select AI Start.
7. Right-click on AI Read; then repeat steps 2 through 4. At what would be step 5, select AI Read.
8. Right-click on AI Clear; then repeat steps 2 through 4. At what would be step 5, select AI Clear.
Testing, Debugging, and Saving the New Application
Testing
You should always verify that your Virtual Instruments function as you expect them to. For example, if you
modified an Analog Input VI, you should connect a known signal to the inputs and verify functionality. If
you modified an Analog Output VI you should use an oscilloscope, or meter, to verify the actual output.
Debugging your Application
If testing your application shows that it does not function properly, debug the application as follows:
1. Using the IOtech Control Panel Applet, verify that the DaqBoard/2000 Series board has been properly
installed and configured. Correct installation and configuration issues as applicable.
2. Physically check all hardware connections. Correct improper connections.
3. Determine if LabVIEW is communicating with the DaqBoard/2000 device.
(a) Go to the LabVIEW Directory.
(b) Go to the IOtech Data Acquisitions Functions Palette.
(c) Open and Run the IOtech LabVIEW Substitution VI named “Install Test.”
(d) Open and Run the “Install Test” VI.
Running Install Test generates a list of every DaqBoard/2000 Series board that is located in your PC.
You can run a communications test on a specific board. If the test does not pass, contact product
support. Chapter 4 includes contact information. If the test does pass, proceed to step 4.
4. Run one of the example programs to ensure that LabVIEW and the DaqBoard/2000 Series Board are
communicating properly.
If you cannot resolve the problem, review Chapter 4, Issues and Caveats. If the problem still can’t be
resolved, seek customer assistance. Note that Chapter 4 includes contact information for product support.
Saving your Application
Save your application using LabVIEW’s standard save procedure. If you are using both IOtech and
National Instrument devices it is a good idea to save your VIs in separate folders.