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12 Instrumentation Laboratory Exercise
Change the WRITE tab to READ, then click OK to read the voltage in.
Figure 1-9 Program with completed input section
Link the boxes together in left- to- right order (for example, from “X”
to “A”, and then from “Result” to the AlphaNumeric box). To display
the real voltage, change the formula in the Formula box to “A” only
(for example, the output will be equal to A, which is the input).
Now you have your first program ready. Try to measure the voltage
across the resistors by clicking the RUN button (right pointing triangle
on the menu bar).
Wire up the electrical circuit as instructed above, and connect it to
5 V. If everything is working you should get a number around 1.6 in
the AlphaNumeric box at the right.
NOTE
You must enter the quote signs on lines 1 to 5, or it won't work! Also in line 6,
you need to select READ instead of WRITE and assign it to read a REAL64
type if it is not already chosen. Your voltage will automatically be assigned to
the variable X. You may also utilize the MultiInstrument Direct I/O box instead
of the Direct I/O box. The MultiInstrument Direct I/O box can be obtained by
clicking I/O > Advance I/O > MultiInstrument Direct IO. Your VEE program
should now look like Figure 1-9.