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Getting Started
reading is taken and displayed.
Line 190 refreshes the "WAITING" message prior to the return to
re-enable the interrupts.
The HP 3421A is polled in line 230 to determine if it was the source of the SRQ. The program branches
to re-enable the interrupts if bit 3 of the HP 3421A status register is clear. Otherwise, a voltage reading
is taken and displayed before returning to re-enable the interrupts.
When the [Q] key is pressed the program branches to the shutdown routine.
The interrupts are disabled
and the HP 3468A is switched back to local mode before the program ends.
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