Problem Isolation - Keithley DAS-800 series User Manual

Problem Isolation

7-2
interface. If DriverLINX detects any problems or unexpected responses, it
reports an error message to help isolate the problem. The device
initialization error messages fall into three basic categories:
"Device not found"—Board address does not match hardware setting
G
or conflicts with another board. Verify the board's address settings.
Also, don't confuse hexadecimal with decimal addresses in the
DriverLINX Device Configure dialog box.
"Invalid IRQ level" or "Invalid DMA level"—Selected level does
G
not match hardware setting, conflicts with another board's IRQ/DMA
levels, or is dedicated to the computer's internal functions (COM port,
disk drive controller, network adapter, etc.)
"Hardware does not match configuration"—Operating
G
mode/range switch or jumper setting does not match selection(s)
made in the DriverLINX Device Configuration dialog box.
If you encounter a problem with a DAS-800 Series board, perform the
following steps to determine whether the problem is in the computer, in
the DAS-800 Series board, or in the I/O circuitry:
1. Remove power connections to the host computer.
2. Unplug the accessory connector(s) or cable(s) from the DAS-800
Series board(s), keeping the connections intact on the accessory or
expansion board(s).
3. Remove the DAS-800 Series board(s) from the computer and visually
check for damage. If a board is obviously damaged, refer to page 7-7
for information on returning the board.
4. With the DAS-800 Series board(s) out of the computer, check the
computer for proper operation. Power up the computer and perform
any necessary diagnostics.
Troubleshooting