Table 6-1, Troubleshooting Information
If your board is not operating properly after using the information in Table 6-1,
refer to the next section for information on how to contact an applications
engineer.
Technical Support
Before returning any equipment for repair, call Keithley for technical support at:
1-888-KEITHLEY
Monday - Friday, 8:00 A.M. - 5:00 P.M., Eastern Time
Symptom
Possible Cause
Possible Solution
Board does
not respond
The board is damaged.
Contact the Keithley Applications Engineering
Department; see page 6-2
Bad cable or cable not
connected.
Check cable connections. Replace cable if defec-
tive.
No A/C or power cord not
plugged in.
Check power connections to board.
Intermittent
operation
Vibrations or loose con-
nections exist.
Cushion source of vibration and tighten connec-
tions. Check cable.
The board is overheating.
Check environmental and ambient temperature.
See the documentation for your computer for
specifications.
Electrical noise exists.
Provide better shielding or reroute wiring.
Data appears
to be invalid
An open connection
exists.
Check wiring to screw terminal.
Outputs not indicating
proper level.
Check that the circuit is complete (are both relay
and connections used?).
You may need to apply pull-up resistors for the
external source.
6-2 Troubleshooting
