Input Read Test - Keithley PIO-32 User Manual

Input Read Test

If the bit patterns set on the AIO Panel do agree with the logic
levels measured at the I/O terminals, and you have performed an
output set test for all ports, the board is functioning properly.
17. Repeat steps 13, 14, and 15 for additional output channels.
A similar test of input circuitry can be performed by applying an input
signal of suitable type to each input line and verifying that the appropriate
input indicator changes state. Refer to the hardware description in this
user's guide for more details on the input's electrical specifications.
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