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Appendix D Troubleshooting and Common Questions
© National Instruments Corporation D-21 Serial Hardware and Software for Windows
Diagnostic Utility Does Not Show All Installed Ports
If the diagnostic utility does not show all the ports you installed, complete
the following steps:
1. Verify the hardware resources, as follows:
a. Select Start»Settings»Control Panel and double-click on the
niports icon.
b. In the Ports list, select a port and click on the Settings button.
If the serial port is missing from the Ports list, reinstall the
hardware and software. For instructions on how to do so, refer to
the installation and verification chapter for your hardware
platform.
c. In the General Port Settings dialog box, click on the Resources
button to view the resources for the port.
d. Check the hardware resources. If they are in conflict, refer to the
previous section, Resolving Resource Conflicts.
2. Make sure that the National Instruments serial driver is installed,
as follows:
a. Locate the
serial.sys
file in the
WinNT\system32\drivers
directory.
b. If the
serial.sys
file is missing, reinstall the hardware and
software. For instructions on how to do so, refer to the installation
and verification chapter for your hardware platform.
c. Right-click on the
serial.sys
file and select Properties.
d. ClickontheVersion tab. If the Company Name is Microsoft,
the National Instruments serial driver is not installed properly.
To solve this problem, reinstall the NI-Serial software. For
instructionsonhowtodoso,refertotheinstallationand
verification chapter for your hardware platform.
3. Physically make sure the correct number of boards and ports are
installed.
Address Test Failed
If the
address test failed, Interrupt test cannot be
performed
error message appears, you might have an address conflict
with legacy boards in your system. To solve this problem, change the base
addresses assigned to your legacy boards. For instructions on how to do so,
refer to your legacy board documentation.