Keithley DAS-1800ST Series User Manual page 90

Table 7-1. Troubleshooting Information (cont.)
Symptom Possible Cause
Data appears to be The most common cause of this
invalid problem is that the I/O bus speed
is in excess of 8MHz.
An open connection exists.
Another system resource is using
the specified base address.
Transducer is not connected to
channel being read.
Board is set for single-ended
mode while transducer is a
differential type, or vice versa.
Computer does not Board not seated properly.
boot.
The base address setting of the
DAS-1800ST/HR Series board
conflicts with that of another
system resource.
The power supply of the host
computer is too small to handle
all the system resources.
System lockup A timing error occurred.
7-4
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If your board is not operating properly after using the information in
Table 7-1, continue with the next two sections to further isolate the
problem.
Possible Solution
Reduce I/O bus speed to a maximum of
8MHz (to change the I/O bus speed, run
BIOS setup). See the documentation for
your computer for instructions on
running BIOS setup.
Check wiring to screw terminal.
Reconfigure the base address of the
DAS-1800ST/HR Series board; refer to
page 3-5 for more information. Check
the I/O assignments of other system
resources and reconfigure, if necessary.
Check the transducer connections.
Check transducer specifications and
board configuration.
Check the installation of the board.
Check the base address settings of your
system resources; each address must be
unique.
Check the needs of all system resources
and obtain a larger power supply.
Press Ctrl + Break.
Troubleshooting