Problem Isolation - Keithley PDISO-8 User Manual

Warning

Problem Isolation

Testing the I/O
The procedures in the section are intended for qualified service personnel.
Do not perform these procedures unless you are qualified to do so.
If your PDISO-8 board is not operating properly, use the information in
this section to isolate the problem. If the problem appears serious enough
to warrant technical support, refer to "Technical Support" on page 6-12
for information on how to contact an applications engineer.
If you encounter a problem with a PDISO-8 board, use the instructions in
this section to isolate the cause of the problem before calling Keithley
Hardware Applications Engineering.
If your PDISO-8 board appears not to work properly in general, skip to
the next section, "Testing the Board and Host Computer."
However, if your PDISO-8 board seems to work in general, but not all of
the I/O bits appear to respond appropriately, you can test them without
special hardware or software. You can use the DriverLINX AIO Panel to
set the status of the relay outputs and then use an ohmmeter to check
operation of the relay outputs. You can use a low voltage power supply to
set the status of the isolated inputs and then use the DriverLINX AIO
Panel to read the inputs.
Troubleshooting
6
6-1