Appendix A – Troubleshooting
Sealevel Systems
232
Page
8
Appendix A - Troubleshooting
Serial Utility test software is supplied with the Sealevel Systems adapter and
will be used in the troubleshooting procedures. Using this software and
following these simple steps, most common problems can be eliminated
without the need to call 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. Ensure that the Sealevel Systems software has been installed on the
machine so that the necessary files are in place to complete the
installation.
3. When the
232
is configured properly, the USB Enabled LED
(EN) will be lit. This should allow you to use Sealevel’s WinSSD utility
and the supplied loopback plug to check communications. The supplied
loopback plug connects TD to RD. If you decide to test the Modem
Control Signals, a full pin loopback plug will be required. Details on
loopback plugs are included within WinSSD. Contact Sealevel Systems if
you need further assistance
4. When testing the
232
in loopback mode, you should see both
the TD and RD LED’s flashing as well as seeing echoed data on the screen.
The loopback test first transmits a HEX pattern, 55AA, and then an ASCII
string of data. If this test passes, then the
232
is ready for use in
your application.
