Appendix A - Troubleshooting - Sealey SeaLINK+232 User Manual

APPENDIX A - TROUBLESHOOTING

Serial Utility test software is supplied with the Sealevel Systems adapter and should 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.
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.
Ensure that the Sealevel Systems software has been installed on the machine so that the necessary
files are in place to complete the installation.
When the SeaLINK+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
When testing the SeaLINK+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 SeaLINK+232 is ready
for use in your application.
© Sealevel Systems, Inc. 2101 Manual | SL9089 8/2021
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