SeaLink+422 Users Manual Part Number 2106 Sealevel Systems, Inc. PO Box 830 Liberty, SC 29657 USA Telephone: 864.843.4343 Fax: 864.843.3067 www.sealevel.
Contents INTRODUCTION ........................................................................................................................ 1 OVERVIEW .............................................................................................................................................. 1 WHAT’S INCLUDED ................................................................................................................................. 1 INSTALLATION ...................................................
Introduction and Installation Introduction Overview The Sealevel Systems SeaLINK+422 equips the PC with 1 USB to RS-422 Asynchronous serial port providing a versatile interface for common RS-422 needs. The SeaLINK+422 connects through the PC’s external USB port, so it does not require opening the computer case. Resources such as IRQs and I/O addresses are also not utilized. It does require a system that supports USB in hardware and operating system.
Technical Description Technical Description The SeaLINK+422: utilizes a USB UART. This chip features programmable baud rate, data format, 128 byte Dual Port TX Buffer, and 384 byte Dual Port RX Buffer. The RS-422 transceiver supports data rates up to 921.6K baud. Features • Hot-Pluggable device • Does not require opening the case • No system resources are required (i.e.
Specifications Specifications Environmental Specifications Specification Temperature Range Humidity Range Operating 0º to 70º C (32º to 158º F) 10 to 90% R.H. Non-Condensing Storage -50º to 105º C (-58º to 221º F) 10 to 90% R.H. Non-Condensing Manufacturing All Sealevel Systems Printed Circuit boards are built to UL 94V0 rating and are 100% electrically tested. These printed circuit boards are solder mask over bare copper or solder mask over tin nickel.
Appendix A & B 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 steps, most common problems can be eliminated. 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 the Windows Device Manager. 2.
Appendix C & D Appendix C – RS-422 Electrical Interface The RS-422 specification defines the electrical characteristics of balanced voltage digital interface circuits. RS-422 is a differential interface that defines voltage levels and driver/receiver electrical specifications. On a differential interface, logic levels are defined by the difference in voltage between a pair of outputs or inputs.
Sealevel Systems SeaLINK+422 P1 P IN 1 4 U S B T y p e A P lu g P1 4' 6"(+0", - 6") 5' (+/- 1") 6"(+ 6", -0") P2 PIN 1 9 D B -9 M A L E P2 DB -9 Ma le S H IE L D E D D B -9 C O N N E C T O R 4-4 0 THU M B SC R EW S 4-4 0 N U T S Appendix E – Measured Drawing Appendix E – Measured Drawing Page 6
Warranty Warranty Sealevel's commitment to providing the best I/O solutions is reflected in the Lifetime Warranty that is standard on all Sealevel manufactured products. We are able to offer this warranty due to our control of manufacturing quality and the historically high reliability of our products in the field. Sealevel products are designed and manufactured at its Liberty, South Carolina facility, allowing direct control over product development, production, burn-in and testing. Sealevel Systems, Inc.
