SeaLevel SeaPORT+2/232 User manual

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© Sealevel Systems, Inc. 2201 Manual | SL9096 6/2021
SeaPORT+2/232
User Manual | 2201

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© Sealevel Systems, Inc. 2201 Manual | SL9096 6/2021
Contents
CONTENTS...........................................................................................................................................................2
INTRODUCTION ...................................................................................................................................................3
BEFORE YOU GET STARTED ...............................................................................................................................4
INSTALLATION INSTRUCTIONS .........................................................................................................................5
CONFIGURATION .................................................................................................................................................7
TECHNICAL DESCRIPTION .................................................................................................................................8
SPECIFICATIONS ................................................................................................................................................. 9
APPENDIX A –TROUBLESHOOTING................................................................................................................10
APPENDIX B –HOW TO GET ASSISTANCE .....................................................................................................11
APPENDIX C –ELECTRICAL INTERFACE ........................................................................................................12
APPENDIX D –ASYNCHRONOUS COMMUNICATIONS ..................................................................................13
APPENDIX E –COMPLIANCE NOTICES...........................................................................................................14
WARRANTY ........................................................................................................................................................16

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© Sealevel Systems, Inc. 2201 Manual | SL9096 6/2021
Introduction
Overview
The Sealevel Systems SeaPORT+2/232 equips the PC with 2 USB to RS-232 Asynchronous serial ports
providing a versatile interface for common serial needs. The advantage of this product over more traditional
approaches is that it does not require opening the computer case, nor does it require resources such as I/O
ports or IRQ’s. It does require a system that supports USB both in terms of hardware and operating system.

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© Sealevel Systems, Inc. 2201 Manual | SL9096 6/2021
Before You Get Started
What’s Included
The SeaPORT+2/232 is shipped with the following items. If any of these items is missing or damaged,
contact the supplier.
•SeaPORT+2/232 USB to RS-232 Serial I/O Adapter
•USB Cable Part Number CA179 for Connecting to Upstream Host/Hub
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. 2201 Manual | SL9096 6/2021
Installation Instructions
Windows 98/ME/2000/XP/Vista™ Operating Systems
Do not connect the device to a USB port until the software is installed.
1. Begin by locating, selecting, and installing the correct software from the Sealevel software driver
database.
2. Select the Part Number (2201) for your device from the listing.
3. The setup file will automatically detect the operating environment and install the proper
components. Follow the information presented on the installation screens that follow.
4. A screen may appear with the declaration: “The publisher cannot be determined due to the
problems below: Authenticode signature not found.” Please select the ‘Yes’ button and proceed
with the installation. This declaration simply means that the Operating System is not aware of the
driver being loaded. It will not cause any harm to your system.
5. During setup, you may specify installation directories and other preferred configurations. This
program also adds entries to the system registry that are necessary for specifying the operating
parameters for each driver. An uninstall option is included to remove the driver and all registry/INI
file entries from your system.
6. Proceed with the physical installation of your SeaLINK USB serial adapter.
Windows NT is not USB aware and thus cannot support this device.

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© Sealevel Systems, Inc. 2201 Manual | SL9096 6/2021
Physical Installation
The screen captures below are taken from a Windows 98 installation. Your particular operating system may
differ slightly from what is shown based on your version of Windows.
The SeaPORT+2/232 can be connected to any upstream type “A” port either at the PC host or an upstream
hub. The SeaPORT+2/232 is hot pluggable, meaning there is no need to power down your computer prior
to installation.
Connect the SeaPORT+2/232 to an upstream host or hub.
The New Hardware Found wizard will now proceed to locate the appropriate drivers. These drivers were
installed during the SeaCOM software setup procedure. Once the drivers are found a new window will pop
up indicating the installation of each of the four new ports.
If you view the system’s Device Manager, you should have new “COM” ports in the Ports (COM & LPT)
Device Class. This is shown on the following page.
You can access your new COM: ports by using the assigned COM: identifiers as shown above. In this case,
it is COM 3, 4. However, this assignment will vary from system to system. At this point, the hardware is
recognized and ready to use.

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© Sealevel Systems, Inc. 2201 Manual | SL9096 6/2021
Configuration
Electrical Interface Selection
Each of the two ports on the SeaPORT+2/232 is pre-configured as an RS-232 interface.
Simply install the included software and connect the SeaPORT adapter to your USB port. The device is
immediately recognized by the system. At that point, connect the adapter to your target device (i.e., modem,
serial printer, scale, bar code, etc.). Now your non-USB peripherals can have the same connection simplicity
and ease of use as USB peripherals.

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© Sealevel Systems, Inc. 2201 Manual | SL9096 6/2021
Technical Description
The SeaPORT+2/232 utilizes two USB UARTs. These chips feature programmable baud rate, data format,
128 byte Dual Port TX Buffer, and 384 byte Dual Port RX Buffer. The RS-232 transceiver supports data rates
up to 460.8K baud.
Features
•Hot pluggable device that does not require opening the case
•No system resources are required (i.e., I/O ports or IRQ’s)
•LED status indicators for USB Enabled and port activity
RS-232 (DB-9 Male)
Signal
Name
Pin#
Mode
GND
Ground
5
TX
Transmit Data
3
Output
RTS
Request To Send
7
Output
DTR
Data Terminal Ready
4
Output
RX
Receive Data
2
Input
CTS
Clear To Send
8
Input
DSR
Data Set Ready
6
Input
DCD
Data Carrier Detect
1
Input
RI
Ring Indicator
9
Input

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© Sealevel Systems, Inc. 2201 Manual | SL9096 6/2021
Specifications
Environmental Specifications
Specification
Operating
Storage
Temperature Range
0º to 50º C (32º to 122º F)
-20º to 70º C (-4º to 158º F)
Humidity Range
10 to 90% R.H. Non-Condensing
10 to 90% R.H. Non-Condensing
Physical Dimensions
Package Length
7.06 inches (17.93 cm)
Package Width
5.32 inches (13.51 cm)
Package Height
1.50 inches (3.81 cm)
Mean Time Between Failures (MTBF)
Greater than 150,000 hours. (Calculated)
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.
Power Consumption
This device is a high-power USB device. It must be plugged into the USB root hub or a self-powered hub
capable of supplying 500 mA per port.

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© Sealevel Systems, Inc. 2201 Manual | SL9096 6/2021
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 is not 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 SeaPORT+2/232 is configured properly, the USB Enabled LED (E) 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 on WinSSD. Contact Sealevel Systems if you need further assistance.
4. When testing the SeaPORT+2/232 in loopback mode, you should see the port LED’s flashing
as well as seeing echoed data on the screen. The loopback test first transmits a HEX pattern,
55AA, and then a ASCII string of data. If this test passes, then the SeaPORT+2/232 is ready for
use in your application.
If these steps do not solve your problem, please call Sealevel Systems’ Technical Support, [phone].
Our technical support is free and available from 8:00AM-5PM Eastern Time Monday through Friday. For
email support contact [e-mail].