AppendixD Troubleshootingand Common Questions
©NationalInstruments Corporation D-9 SerialHardware and Software for Windows
TroubleshootingDiagnostic Messages
Thissection lists possible error messages returned by the diagnostic utility,
along with solutions.
No National Instruments Serial Port Found
Ifthe No National Instruments serial port found errormessage
appears,complete the following steps:
1. Verifythe hardware resources, as follows:
a. In the Device Manager tab, under Multi-function adapters,
double-click on a serial board.
b. Ifa serial board is missing from the Multi-function adapters list,
reinstallthe hardware and software. For instructions on how to do
so,refer to the installation and verificationchapter for your
hardwareplaform.
c. ClickontheResourcestab. If the resources were assigned
properly,the Resources tab shows which resources are assigned
to your serial ports.
d. Checkthe hardware resources. If they are in conflict, refer to the
previoussection, Troublesho oting Diagnostic Messages.
2. In some versions of WindowsMe/9x, in the Device Manager, the
Drivertab shows information about the installed driver. Make sure that
the National Instruments serial driveris inst alled for the port.
Ifthe serialdriver is a Microsoft driver, reinstall the NI-Serial
software.For instructions on how to do so, refer to the installation and
verificationchapter for your hardware platform.
3. Makesure that the N ational Instruments serial driveris installed, as
follows:
a. Locate the niserial.vxd file in the \Windows\system
directory.
b. If the niserial.vxd file is missing, reinstall the hardware and
software.For instructions on how to do so, refer to the installation
and verificationchapter for your hardware platform.