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Appendix B
Troubleshooting and Common Questions
B-2
©
National Instruments Corporation
EDVR Error Condition with ibcntl Set to 0xE0320029 (–533594071) or
0xE1050029 (–519765975)
If a call is made with a board number that is assigned to a GPIB
interface that is unusable because of a resource conflict, an EDVR error
condition occurs with
ibcntl
set to 0xE0320029 or 0xE1050029. This
error indicates that the GPIB interface is not working properly. Refer to
the
GPIB Interface Not Working Properly
section later in this appendix.
EDVR Error Condition with ibcntl set to 0xE1030043 (–519897021)
This error occurs if you have enabled DOS GPIB support and attempted
to run an existing GPIB DOS application that was compiled with an
older, unsupported DOS language interface.
Troubleshooting Device Manager Problems
The Windows Device Manager contains configuration information for
all of the GPIB hardware it is aware of that is installed in your system.
To start the Windows Device Manager, double-click on the System icon
under Start»Settings»Control Panel. In the System Properties box that
appears, select the Device Manager tab and click on the View devices
by type button at the top of the tab.
• If there is no National Instruments GPIB Interfaces item and
you are certain you have a GPIB interface installed, refer to the
No National Instruments GPIB Interfaces Item section of this
appendix.
•
If the National Instruments GPIB Interfaces item exists, but the
GPIB interface you are looking for is not listed there, refer to the
section of this appendix.
• If the GPIB interface you are looking for is listed, but has a circled
X or exclamation mark (!) over its icon, refer to the
section of this appendix.
No National Instruments GPIB Interfaces Item
The National Instruments GPIB Interfaces item might be missing
from the Device Manager because you have not yet used the
Add New Hardware Wizard in the Control Panel to add the new GPIB
hardware to the system. To start the Add New Hardware Wizard,
double-click on the Add New Hardware icon under Start»Settings»
Control Panel. For details on how to use the Add New Hardware