Measurement Computing WBK20A - Manual (Page 35)

WBK20A, PCMCIA/EPP Interface Card 04-03-02 Troubleshooting 6-3
If you have determined that the WBK20A has been installed successfully as an LPT device
but that the Daq*Configuration test does not work (after making sure that you have selected
the correct LPT port), then continue with step 6.
6. From the Windows Device Manager (in Control Panel ⇒System), see if there is an
exclamation point (!) in front of the WBK20A parallel port designation.
The exclamation point (!), if present, indicates that the parallel port was installed with a
resource conflict (I/O address or IRQ interrupt assignment).
If this is the case, complete the following:
• Double-click on the WBK20A designation.
• Select the Resources tab.
• Uncheck the “use automatic settings” box.
• Try different Basic Configuration options until you find one that shows no
resource conflicts.
An option is to try selecting either the interrupt request setting number or the
I/O address range and then clicking on the “Change Setting” button to
change the resources individually.
Note: Windows will give a message about whether the new configuration
conflicts with other devices or not.
7. After you have found an acceptable new resource setting, i.e., one that shows no conflicts,
restart the computer, then go to the Daq*Configuration utility and try the communication test
again.
You can find out what resources are currently free by going to the Windows Device
Manager and double-clicking on the Computer icon located at the top of the list. This
brings up a “View Resources” window that has an interrupt request (IRQ) option and
an Input/Output (I/O) resources option. Select each option in turn, and note which
IRQs and I/O addresses are not being used and are available.
8. If software support for other PCMCIA devices has been installed on the computer, but are not
currently being used, it is possible that there is a resource conflict that Windows is not
reporting. You can try to eliminate this conflict through the following process:
• One at a time, insert each other PCMCIA device into your computer.
• In the Device Manager, highlight the device, and click the button to
remove the device from the list.
• Repeat this process until you have removed all other PCMCIA devices from the
computer. This frees up the resources that these devices have been using and
eliminates any conflicts that were present.
• If necessary, search for available resources and select them (see steps 6 and 7).
Restart the computer, go to the Daq*Configuration utility, then retry the
communication test.
Note: If the Resource Tests still fail after performing these steps, and there are no other devices to be
removed, it is likely that a successful WBK20A installation cannot be completed. If this is the
case, you will need to use the computer’s native parallel port. If the native parallel port is
available, and if you can run the port in either ECP or EPP mode, you will be able to obtain a
data transfer rate that approaches the WBK20A throughput.