SeaPORT+2/232
TM
Sealevel Systems, Inc
P.O. Box 830
Liberty, SC 29657 USA
Part # 2201
Phone: (864) 843-4343
FAX: (864) 843-3067
www.sealevel.com
Contents
INTRODUCTION........................................................................ 1
OVERVIEW......................................................................................1
WHAT’S INCLUDED ........................................................................1
INSTALLATION......................................................................... 2
OPERATING SYSTEM INSTALLATION...............................................2
SYSTEM INSTALLATION ..................................................................2
ONFIGURATION ..................................................................... 4
C
ELECTRICAL INTERFACE SELECTION ..............................................4
TECHNICAL DESCRIPTION....................................................... 5
FEATURES....................................................................................... 5
RS-232 (DB-9 Male)...............................................................5
SPECIFICATIONS ...................................................................... 6
ENVIRONMENTAL SPECIFICATIONS.................................................6
MANUFACTURING...........................................................................6
POWER CONSUMPTION ...................................................................6
MEAN TIME BETWEEN FAILURES (MTBF).....................................6
PHYSICAL DIMENSIONS ..................................................................6
APPENDIX A - TROUBLESHOOTING.........................................7
APPENDIX B - HOW TO GET ASSISTANCE ..............................8
APPENDIX C - ELECTRICAL INTERFACE.................................9
RS-232...........................................................................................9
APPENDIX D - ASYNCHRONOUS COMMUNICATIONS ............10
APPENDIX E - COMPLIANCE NOTICES.................................. 11
FEDERAL COMMUNICATIONS COMMISSION STATEMENT ..............11
CANADIAN RADIO INTERFERENCE REGULATIONS ........................11
EMC DIRECTIVE STATEMENT ......................................................12
ARRANTY............................................................................13
W
Figure 1 - Asynchronous Communications Bit Diagram .....................10
© Sealevel Systems, Inc.
SL9096 Revision 7/2006
Sealevel Systems, Incorporated. All rights reserved.
Introduction
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.
What’s Included
The SeaPORT+2/232 is sh ipped with the follo wing 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
• Sealevel Software
Sealevel Systems SeaPORT+2/232 Page 1
Installation
Installation
Operating System Installation
Choose Install Software at the beginning of the CD and install SeaCOM.
System 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.
Sealevel Systems SeaPORT+2/232 Page 2
Installation
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.
Sealevel Systems SeaPORT+2/232 Page 3
Configuration
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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Specifications
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
Sealevel Systems SeaPORT+2/232 Page 5
Specifications
Specifications
Environmental Specifications
Specification Operating Storage
Temperature
Range
Humidity Range
0º to 50º C
(32º to 122º 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.
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.
-20º to 70º C
(-4º to 158º F)
10 to 90% R.H.
Non-Condensing
Mean Time Between Failures (MTBF)
Greater than 150,000 hours. (Calculated)
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)
Sealevel Systems SeaPORT+2/232 Page 6
Appendix A – Troubleshooting
Appendix A - T roubleshooting
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 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.
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Appendix B – How To Get Assistance
Appendix B - How To Get Assistance
Please refer to
Appendix A - Troubleshooting prior to calling Technical Support.
1. Read this manual thoroughly before attempting to install the
adapter in your system.
2. When calling for technical assistance, please have your user
manual and current adapter settings. If possible, please have the
adapter connected in a computer ready to run diagnostics.
3. Sealevel Systems maintains a home page on the Internet. Our
home page address is www.sealevel.com
updates, and newest manuals are available via our FTP site that
can be accessed from our home page.
4. Technical support is available Monday thru Friday from 8:00 a.m.
to 5:00 p.m. Eastern time. Technical support can be reached at
(864) 843-4343.
RETURN AUTHORIZATION MUST BE OBTAINED FROM
SEALEVEL SYSTEMS BEFORE RETURNED MERCHANDISE WILL
BE ACCEPTED. AUTHORIZATION CAN BE OBTAINED BY
CALLING SEALEVEL SYSTEMS AND REQUESTING A RETURN
MERCHANDISE AUTHORIZATION (RMA) NUMBER.
. The latest software
Sealevel Systems SeaPORT+2/232 Page 8
Appendix C - Electrical Interface
Appendix C - Electrical Interface
RS-232
Quite possibly the most widely used communication standard is RS-232. This
implementation has been defined and revised several times and is often referred
to as RS-232 or EIA/TIA-232. The IBM PC computer defined the RS-232 port
on a 9 pin D sub connector and subsequently the EIA/TIA approved this
implementation as the EIA/TIA-574 standard. This standard is defined as the
9-Position Non-Synchronous Interface between Data Terminal Equipment and
Data Circuit-Terminating Equipment Employing Serial Binary Data
Interchange. Both implementations are in wide spread use and will be referred
to as RS-232 in this document. RS-232 is capable of operating at data rates up to
20 Kbps at distances less than 50 ft. The absolute maximum data rate may vary
due to line conditions and cable lengths. RS-232 is a single ended or unbalanced
interface, meaning that a single electrical signal is compared to a common signal
(ground) to determine binary logic states. The RS-232 and the EIA/TIA-574
specification define two types of interface circuits, Data Terminal Equipment
(DTE) and Data Circuit-Terminating Equipment (DCE). The SeaPORT+2/232
is a DTE device.
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Appendix D - Asynchronous Communications
r
Appendix D - Asynchronous Communications
Serial data communications implies that individual bits of a character are
transmitted consecutively to a receiver that assembles the bits back into a
character. Data rate, error checking, handshaking, and character framing
(start/stop bits) are pre-defined and must correspond at both the transmitting and
receiving ends.
Asynchronous communications is the standard means of serial data
communication for PC compatibles and PS/2 computers. The original PC was
equipped with a communication or COM: port that was designed around an
8250 Universal Asynchronous Receiver Transmitter (UART). This device
allows asynchronous serial data to be transferred through a simple and
straightforward programming interface. Character boundaries for asynchronous
communications are defined by a starting bit followed by a pre-defined number
of data bits (5, 6, 7, or 8). The end of the character is defined by the
transmission of a pre-defined number of stop bits (usually 1, 1.5 or 2). An extra
bit used for error detection is often appended before the stop bits.
Idle state of
line
1
0
5 to 8 Data Bits
Figure 1 - Asynchronous Communications Bit Diagram
Odd, Even
or
Unused
P
BIT
STOP
Remain Idle o
next start bit
1
1.5
2
This special bit is called the parity bit. Parity is a simple method of determining
if a data bit has been lost or corrupted during transmission. There are several
methods for implementing a parity check to guard against data corruption.
Common methods are called (E)ven Parity or (O)dd Parity. Sometimes parity is
not used to detect errors on the data stream. This is refereed to as (N)o parity.
Because each bit in asynchronous communications is sent consecutively, it is
easy to generalize asynchronous communications by stating that each character
is wrapped (framed) by pre-defined bits to mark the beginning and end of the
serial transmission of the character. The data rate and communication
parameters for asynchronous communications have to be the same at both the
transmitting and receiving ends. The communication parameters are baud rate,
parity, number of data bits per character, and stop bits (i.e. 9600,N,8,1).
Sealevel Systems SeaPORT+2/232 Page 10
Appendix E - Compliance Notices
Appendix E - Compliance Notices
Federal Communications Commission Statement
This equipment has been tested and found to comply with the limits for Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference when the
equipment is operated in a residential installation. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the equipment
off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
• Reorient or relocate the receiving antenna
• Increase the separation between the equipment and receiver
• Connect the equipment into an outlet on a circuit differen t from that to
which the receiver is connected
• Consult the dealer or an experienced radio/TV technician for help
Caution
Sealevel Systems, Inc. is not responsible for any radio or television interference
caused by unauthorized modifications of this equ ipment or the substitution of
attachment of connecting cables and equipment other than those specified by
Sealevel Systems. Such unauthorized modifications, substitutions, or
attachments may void the user’s authority to operate the equipment. The
correction of interference caused by such unauthorized modifications,
substitutions, or attachments will be the responsibility of the user.
Always use cabling provided with this product if possible. If no cable is
provided or if an alternate cable is required, use high quality shielded cabling to
maintain compliance with FCC directives.
Canadian Radio Interference Regulations
This Class B digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.
Cet Appareil numérique de la classe B respecte toutes les exigences de
Règlement sur le matériel du Canada
Sealevel Systems SeaPORT+2/232 Page 11
Appendix E - Compliance Notices
EMC Directive Statement
Products bearing the CE Label fulfill the requirements of
the EMC directive (89/336/EEC) and of the low-voltage
directive (73/23/EEC) issued by the European
Commission.
To obey these directives, the following European standards must be met:
EN55022 Class B - ‘Limits and methods of measurement of radio
EN60950 (IEC950) - ‘Safety of information technology
equipment, including electrical business equipment’
Always use cabling provided with this product if possible. If no cable is
provided or if an alternate cable is required, use high quality shielded cabling to
maintain compliance with EMC directives.
interference characteristics of information technology equipment’
EN55024-‘Information technology equipment Immunity
characteristics Limits and methods of measurement.
Sealevel Systems SeaPORT+2/232 Page 12
Warranty
Warranty
Sealevel Systems, Inc. provides a lifetime warranty for this product. Should this
product fail to be in good working order at any time during this period, Sealevel
Systems will, at it's option, replace or repair it at no additional charge except as
set forth in the following terms. This warranty does not apply to products
damaged by misuse, modifications, accident or disaster.
Sealevel Systems assumes no liability for any damages, lost profits, lost savings
or any other incidental or consequential damage resulting from the use, misuse
of, or inability to use this product. Sealevel Systems will not be liable for any
claim made by any other related party.
RETURN AUTHORIZATION MUST BE OBTAINED FROM
SEALEVEL SYSTEMS BEFORE RETURNED MERCHANDISE WILL
BE ACCEPTED. AUTHORIZATION CAN BE OBTAINED BY
CALLING SEALEVEL SYSTEMS AND REQUESTING A RETURN
MERCHANDISE AUTHORIZATION (RMA) NUMBER.
Sealevel Systems, Incorporated
2779 Greenville Highway
P.O. Box 830
Liberty, SC 29657 USA
(864) 843-4343 FAX: (864) 843-3067
www.sealevel.com
email: support@sealevel.com
Technical Support is available from 8 a.m. to 5 p.m. Eastern time.
Monday - Friday
Trademarks
Sealevel Systems, Incorporated acknowledges that all trademarks referenced in
this manual are the service mark, trademark, or registered trademark of the
respective company.
SeaPORT+2/232 is a trademark of Sealevel Systems, Incorporated.
Sealevel Systems SeaPORT+2/232 Page 13
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