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USB SINGLE-PORT HUB (RS-422/485)
Appendix A. Troubleshooting
A.1 Before Calling Technical Support
Serial Utility test software is supplied with the USB
Single-Port Hub (RS-422/485) and will be used in the
troubleshooting procedures. Using this software and
following these simple steps, most common problems
can be eliminated without calling Technical Support.
1. If your adapter isn’t working, first check to make
sure that USB support is enabled in the system
BIOS and it is functioning properly in the
operating system. This can be done by using either
the Windows 98, Me, or Windows 2000 Device
Manager.
2. Make sure that the systems software has been
installed on the machine so that the necessary files
are in place to complete the installation.
3. When the USB Single-Port Hub (RS-422/485) is
configured properly, the USB Enabled LED (EN)
will be lit. This should allow you to use the
WinSSD utility and the supplied loopback plug to
check communications. The supplied loopback
plug connects TX to RX. If you decide to test the