SeaLevel SeaLINK+2/PC.SC User manual

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© Sealevel Systems, Inc. 2228 Manual | SL9205 8/2021
SeaLINK+2/PC.SC
User Manual | 2228

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© Sealevel Systems, Inc. 2228 Manual | SL9205 8/2021
Contents
CONTENTS............................................................................................................................................................................................................................ 2
INTRODUCTION................................................................................................................................................................................................................... 3
BEFORE YOU GET STARTED.............................................................................................................................................................................................. 4
OPTIONAL ITEMS ................................................................................................................................................................................................................ 5
INSTALLATION & CONFIGURATION .................................................................................................................................................................................7
HARDWARE INSTALLATION............................................................................................................................................................................................12
VERIFYING INSTALLATION..............................................................................................................................................................................................16
HARDWARE CONFIGURATION ........................................................................................................................................................................................17
HARDWARE DESCRIPTION ............................................................................................................................................................................................. 21
ELECTRICAL SPECIFICATIONS .......................................................................................................................................................................................22
TECHNICAL SPECIFICATIONS.........................................................................................................................................................................................24
APPENDIX A –TROUBLESHOOTING.............................................................................................................................................................................25
APPENDIX B –HOW TO GET ASSISTANCE..................................................................................................................................................................28
APPENDIX C –ELECTRICAL INTERFACES....................................................................................................................................................................29
APPENDIX D –ASYNCHRONOUS COMMUNICATIONS............................................................................................................................................. 31
APPENDIX E –CAD DRAWINGS - 2228 ......................................................................................................................................................................32
APPENDIX F –COMPLIANCE NOTICES.........................................................................................................................................................................33
WARRANTY ........................................................................................................................................................................................................................34

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© Sealevel Systems, Inc. 2228 Manual | SL9205 8/2021
Introduction
Overview
The Sealevel’s SeaLINK® 2228 is a dual-port embedded USB to multi-interface serial adapter intended for
mounting directly to a computer chassis, eliminating the need for an external converter, and providing a
clean, professional installation. All configuration and electrical interface selections are handled through the
driver, so you never need to open the enclosure to set jumpers or switches. Each serial port is individually
software configurable for RS-232, RS-422, and RS-485 with the electrical interface settings maintained
locally, allowing the host computer to be repaired or upgraded without reconfiguring the serial ports.
Sealevel SeaCOM USB software drivers and utilities make installation and operation easy for Windows
98SE, ME, 2000, XP, and Vista operating systems. Once the software is installed, plug the 2228 into an
available USB port and each port is recognized as a standard COM port by the host system enabling
compatibility with legacy software. Serial data rates to 921.6K bps are supported.
The 2228 includes a standard sized PC bracket and ships with an internal USB cable (Item# CA260) that is
compatible with many EBX and larger sized motherboards with 0.1" USB header connectors. For EPIC and
smaller sized motherboards, an internal USB cable with a 2mm header connector (Item# CA383) is
available as an option. Standard operating temperature range is 0°C to 70°C and extended temperature
range (-40°C to 85°C) is optional.
Features
•Each port is individually software configurable for RS-232, RS-422, and two-wire or four-
wire RS-485
•High speed UART with 128-byte Tx FIFO and 384-byte Rx FIFO
•Automatic hardware RS-485 enable/disable
•Two DB9M connectors –each serial port supports data rates to 921.6K bps
•Powered by USB host connection
•Full modem control signals implemented in RS-232 mode
•Includes 14” internal USB header cable (Item# CA260)

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© Sealevel Systems, Inc. 2228 Manual | SL9205 8/2021
Before You Get Started
What’s Included
The SeaLINK+2/PC.SC is shipped with the following items. If any of these items is missing or damaged,
please contact Sealevel for replacement.
•2228 –USB to RS-232/422/485 Two Port Serial Interface Adapter
•CA260 –Internal USB Header Cable, 14” in Length (compatible with many EBX and larger
sized motherboards with 0.1" USB header connectors)
Advisory Conventions
Warning
The highest level of importance used to stress a condition where damage could result to the
product, or the user could suffer serious injury.
Important
The middle level of importance used to highlight information that might not seem obvious or a
situation that could cause the product to fail.
Note
The lowest level of importance used to provide background information, additional tips, or other
non-critical facts that will not affect the use of the product.

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© Sealevel Systems, Inc. 2228 Manual | SL9205 8/2021
Optional Items
Depending upon your application, you are likely to find one or more of the following items useful. All items
can be purchased from our website (http://www.sealevel.com) or by calling our sales team at 864-843-
4343.
Cables
Internal USB Cable for 2mm Box Headers
(Item# CA383)
The CA383 cable has a 1x4 2mm Molex connector for
connecting to Sealevel embedded USB products. The
other end has a 1x4 2mm box header connector found
on very small motherboards.
Internal USB Cable for 2mm Molex Connectors
(Item# CA382)
The CA383 cable has a 1x4 2mm Molex connector for
connecting to Sealevel embedded USB products. The
other end has a 1x4 2mm Molex connector compatible
with Sealevel embedded USB hubs and other devices.
DB9F to DB25M (RS-232) Extension Cable
(Item# CA177)
The CA177 is a standard AT-style RS-232 modem cable
with a DB9F connector on one end and a DB25M
connector on the other. This cable is 72 inches in length.
DB9F to DB9M Extension Cable
(Item# CA127)
The CA127 allows users to extend a DB9 cable up to six
feet. The connectors are pinned one-to-one so the cable
is compatible with any device or cable that has DB9
connectors.

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© Sealevel Systems, Inc. 2228 Manual | SL9205 8/2021
OPTIONAL ITEMS, CONTINUED
Terminal Blocks
Terminal Block –DB9F to 9 Screw Terminals
(Item# TB05)
The TB05 terminal block breaks out a DB9 connector to
nine screw terminals to simplify field wiring of serial
connections including RS-422 and RS-485 networks.
The TB05 is designed to connect directly to Sealevel
DB9 serial cards or any cable with a DB9M connector.
Terminal Block –Dual DB9F to 18 Screw Terminals
(Item# TB06)
The TB06 terminal block breaks out dual DB9
connectors to 18 screw terminals to simplify field wiring
of serial connections including RS-422 and RS-485
networks. The TB06 is designed to connect directly to
Sealevel dual port DB9 serial cards or any cable with
DB9M connectors.
Adapters and Converters
DB9F to RJ45 Modular Adapter
(Item# RJ9S8)
The RJ9S8 is a DB9 female to RJ45 adapter. It can be
configured without tools, and it is an excellent choice
for using available infrastructure wiring.

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© Sealevel Systems, Inc. 2228 Manual | SL9205 8/2021
Installation & Configuration
SeaCOM Software Installation
Windows 98/ME/2000/XP/Vista™ Operating Systems
Do not connect the device to a USB port until the software has been successfully installed.
1. To obtain the most current software driver package from Sealevel’s website, download from here:
•SeaCOM for Windows
•SeaCOM for Linux
2. Click on the SeaCOM link in the ‘Downloads’ section to download the current driver.
3. Once downloaded, double-click on the executable to launch the InstallShield wizard and initiate
the driver installation.
To install Sealevel Systems software, you must log in as an administrator or have administrator
privileges in Windows.

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© Sealevel Systems, Inc. 2228 Manual | SL9205 8/2021
SOFTWARE INSTALLATION, CONTINUED
4. When the ‘SeaCOM - InstallShield Wizard’ window appears, click the ‘Next’ button to initiate the
software installation.
5. When the ‘License Agreement’ window appears, accept the terms, and click ‘Next’ to continue.
You can click the ‘Print’ button to print out a copy of the agreement for your records. If you do
not accept the terms of the agreement, the installation will stop.

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© Sealevel Systems, Inc. 2228 Manual | SL9205 8/2021
SOFTWARE INSTALLATION, CONTINUED
6. When the ‘Ready to Install the Program’ window appears, click the ‘Install’ button to install the
software. The files will be automatically installed into the ‘C:\Program Files (x86)’ folder on
your computer.
7. A dialog box will appear, as shown, with important information. Click the ‘OK’ button to continue.
8. During installation, you may receive a warning dialog stating, “The publisher cannot be
determined due to the problems below: Authenticode signature not found.” Click the ‘Yes’
button to proceed with the installation. This declaration means that SeaCOM has not been
certified by Microsoft’s testing labs.
All SeaCOM software and drivers have been fully tested by Sealevel. Clicking ‘Yes’ will not harm
your system.

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© Sealevel Systems, Inc. 2228 Manual | SL9205 8/2021
SOFTWARE INSTALLATION, CONTINUED
9. If SeaCOM has been previously installed on your computer, you do not need to install it again.
If you are upgrading SeaCOM, you should remove the previous version before installing the
latest version. Refer to the ‘Uninstall & Upgrade Instructions’ section of this manual; otherwise,
click ‘OK’ to continue.
10. The setup file will automatically detect the operating environment and install the proper
components. Once the installation is complete, click ‘Finish’ and close the SeaCOM installer
window.
11. You have completed the software driver installation process.
To confirm that the SeaCOM driver has been successfully installed, click on the ‘Start’ button, and
then select ‘All Programs’. You should see the ‘SeaCOM’ program folder listed.