SeaLevel COMM+850.LPCI User manual

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© Sealevel Systems, Inc. 7104 Manual | SL9051 7/2021
COMM+850.LPCI
User Manual | 7104

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© Sealevel Systems, Inc. 7104 Manual | SL9051 7/2021
Contents
CONTENTS...........................................................................................................................................................2
INTRODUCTION ...................................................................................................................................................3
BEFORE YOU GET STARTED ...............................................................................................................................4
CARD SETUP ........................................................................................................................................................5
INSTALLATION .................................................................................................................................................... 7
PHYSICAL INSTALLATION.................................................................................................................................. 9
TECHNICAL DESCRIPTION ...............................................................................................................................10
SPECIFICATIONS ...............................................................................................................................................11
APPENDIX A –TROUBLESHOOTING................................................................................................................12
APPENDIX B –HOW TO GET ASSISTANCE .....................................................................................................13
APPENDIX C –ELECTRICAL INTERFACE ........................................................................................................14
APPENDIX D –ASYNCHRONOUS COMMUNICATIONS ..................................................................................15
APPENDIX E –SILK SCREEN ............................................................................................................................16
APPENDIX F –COMPLIANCE NOTICES...........................................................................................................17
WARRANTY ........................................................................................................................................................18

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© Sealevel Systems, Inc. 7104 Manual | SL9051 7/2021
Introduction
The Sealevel COMM+850.LPCI is a single channel PCI Bus serial I/O adapter. It provides one RS-232 serial
port supporting data rates up to 460.8K bps. The board meets the requirements for the MD1 "Low Profile"
specification as defined by PCISIG in PCI 2.2 "Low Profile Addendum." The COMM+850.LPCI also features
Universal Bus (3.3 and 5.0V) operation.
The COMM+850.LPCI ships with a Low Profile PCI bracket that will only work in a Low Profile PCI slot. If
you need a standard size PCI bracket, please order Item# 7104S.

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Before You Get Started
What’s Included
The COMM+850.LPCI is shipped with the following items. If any of these items are missing or damaged,
please contact Sealevel for replacement.
•COMM+850.LPCI Serial I/O Adapter
Item# 7104 ships with a Low Profile PCI bracket
Item# 7104S ships with a standard size PCI bracket
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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Card Setup
Address and IRQ Selection
The COMM+850.LPCI is automatically assigned resources by your motherboard BIOS. Only the I/O address
may be modified by the user.
Adding or removing other hardware may change the assignment of I/O addresses and IRQs.
Clock Modes
The COMM+850.LPCI employs a unique clocking option that allows the end user to select from divide by 4
and divide by 1 clocking modes. These modes are selected at Header J1.
To select the Baud rates commonly associated with COM: ports (i.e., 2400, 4800, 9600, 19.2, … 115.2K bps )
place the jumper in the divide by 4 mode (silk-screen D4) position.
To select the maximum data rates up to 460.8K bps place the jumper in the divide by 1 (silk-screen D1)
position. Please refer to the following page for these additional data rates.
Baud Rates and Divisors for the 'D1' Mode
The following table shows some common data rates and the rates you should choose if using the adapter
in the ‘D1’ mode.
For this Data Rate
Choose this Data Rate
1200 bps
300 bps
2400 bps
600 bps
4800 bps
1200 bps
9600 bps
2400 bps
19.2K bps
4800 bps
57.6 K bps
14.4K bps
115.2 K bps
28.8K bps
230.4K bps
57.6 K bps
460.8K bps
115.2 K bps

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If your communications package allows the use of Baud rate divisors, choose the appropriate divisor
from the following table:
For this Data Rate
Choose this Divisor
1200 bps
384
2400 bps
192
4800 bps
96
9600 bps
48
19.2K bps
24
38.4K bps
12
57.6K bps
8
115.2K bps
4
230.4K bps
2
460.8K bps
1

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Installation
Software Installation
Windows Installation
Do not install the Adapter in the machine until the software has been fully installed.
Only users running Windows 7 or newer should utilize these instructions for accessing and
installing the appropriate driver via Sealevel’s website. If you are utilizing an operating system
prior to Windows 7, please contact Sealevel by calling 864.843.4343 or emailing
[email protected]om to receive access to the proper driver download and installation
instructions.
1. Begin by locating, selecting, and installing the correct software from the Sealevel software
driver database.
2. Type in or select the part number (#7104) for the adapter from the listing.
3. Select “Download Now” for SeaCOM for Windows.
4. The setup files will automatically detect the operating environment and install the proper
components. Follow the information presented on the screens that follow.
5. A screen may appear with text similar to: “The publisher cannot be determined due to the
problems below: Authenticode signature not found.” Please click 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.
6. During setup, the user 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 also included
to remove all registry/INI file entries from the system.
7. The software is now installed, and you can proceed with the hardware installation.

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Linux Installation
You MUST have “root” privileges to install the software and drivers.
The syntax is case sensitive.
SeaCOM for Linux can be downloaded here: https://www.sealevel.com/support/software-seacom-linux/.
It includes the README and the Serial-HOWTO help files (located at seacom/dox/howto). This series of
files both explains typical Linux serial implementations and informs the user about Linux syntax and
preferred practices.
User can use a program such as 7-Zip to extract the tar.gz file.
In addition, the software selectable interface settings can be accessed by referencing
seacom/utilities/7104mode.
For additional software support, including QNX, please call Sealevel Systems’ Technical Support, (864) 843-
4343. Our technical support is free and available from 8:00 AM - 5:00 PM Eastern Time, Monday through
Friday. For email support contact: su[email protected]om.

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Physical Installation
The adapter can be installed in any PCI expansion slot and contains several jumper straps for each port
that must be set for proper.
Do not install the Adapter in the machine until the software has been fully installed.
1. Turn off PC power. Disconnect the power cord.
2. Remove the PC case cover.
3. Locate an available PCI slot and remove the blank metal slot cover.
4. Gently insert the PCI adapter into the slot. Make sure that the adapter is seated properly.
5. Replace the screw. (This is required to ensure FCC Part 15 compliance.)
6. Replace the cover.
7. Connect the power cord
Installation is finished.

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Technical Description
The Sealevel Systems COMM+850.LPCI provides a versatile interface for any RS-232 device including
modems, printers, and plotters.
The COMM+850.LPCI utilizes the 16850 UART. This chip features programmable baud rates, data format,
interrupt control and industry leading 128-byte FIFOs.
Connector Pin Assignments
RS-232 (DB-9 Male)
Name
Pin #
Mode
TD Transmit Data
3
Output
RTS Request To Send
7
Output
DTR Data Term Ready
4
Output
GND Ground
5
RD Receive Data
2
Input
DCD Data Carrier Detect
1
Input
DSR Data Set Ready
6
Input
CTS Clear To Send
8
Input
RI Ring Indicator
9
Input
These assignments meet EIA/TIA/ANSI-574 DTE for DB-9 type connectors.

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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
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
Supply line
+12VDC
-12VDC
+5VDC
Rating
50 mA
50 mA
300 mA
Physical Dimensions
Board length
4.721 inches (11.99 cm)
Board height including Goldfingers
2.536 inches (6.44 cm)
Board height excluding Goldfingers
2.211 inches (5.62 cm)

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Appendix A –Troubleshooting
Sealevel Software is supplied with the Sealevel Systems adapter and may be used in the troubleshooting
procedures. Using this software and following these simple steps can eliminate most common problems
without the need to call Technical Support.
1. Identify all I/O adapters currently installed in your system. This includes your on-board serial ports,
controller cards, sound cards etc. The I/O addresses used by these adapters, as well as the IRQ (if
any) should be identified.
2. Configure your Sealevel Systems adapter so that there is no conflict with currently installed
adapters. No two adapters can occupy the same I/O address.
3. Make sure the Sealevel Systems adapter is using a unique IRQ. While the Sealevel Systems adapter
does allow the sharing of IRQs, many other adapters (i.e., SCSI adapters & on-board serial ports)
do not. The IRQ is typically selected by the BIOS or Operating system. Some BIOS setup software
will allow changing the IRQ, but others do not. Another method of changing assigned resources is
to try changing PCI slots. This will typically cause the BIOS or OS to reassign the resources.
4. Make sure the Sealevel Systems adapter is securely installed in a motherboard slot.
5. When running DOS or Windows 3.x refer to the Sealevel Software and this User Manual to verify
that the Sealevel Systems adapter is configured correctly. This software contains a diagnostic
program ‘SSD’ that will verify if an adapter is configured properly. This diagnostic program is written
with the user in mind and is easy to use. Make sure that if available, the ‘Use Plug-n-Play” option is
turned ‘OFF’ in your BIOS. Having this option set to ‘ON’ in DOS or Windows 3.x will cause erratic
operations.
6. WinSSD is available as a standalone utility and is included with Sealevel’s SeaCOM, SeaLINK and
SeaMAC software suites
7. Remember that a loopback test is not possible with the ‘NE’ switch turned on.
8. Always use the Sealevel Systems diagnostic software when troubleshooting a problem. This will
eliminate any software issues from the equation.

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Appendix B –How To Get Assistance
Please refer to Troubleshooting Guide prior to calling Technical Support.
1. Begin by reading through the Troubleshooting Guide in Appendix A. If assistance is still needed
please see below.
2. When calling for technical assistance, please have your user manual and current adapter
settings. If possible, please have the adapter installed in a computer ready to run diagnostics.
3. Sealevel Systems provides an FAQ section on its web site. Please refer to this to answer many
common questions. This section can be found at http://www.sealevel.com/faq.asp.
4. Sealevel Systems maintains a web page on the Internet. Our home page address is
www.sealevel.com. The latest software updates, and newest manuals are available via our web
site.
5. Technical support is available Monday to Friday from 8:00 AM to 5:00 PM Eastern
Time. Technical support can be reached at [phone].
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.

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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 widespread 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
COMM+850.LPCI is a DTE device.

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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. A start bit,
followed by a pre-defined number of data bits (5, 6, 7, or 8) defines character boundaries for asynchronous
communications. 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.
Figure 1 - Asynchronous Communications Bit Diagram
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 referred 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).

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Appendix E –Silk Screen
2.536"
4.721"

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Appendix F –Compliance Notices
Federal Communications Commission (FCC) Statement
This equipment has been tested and found to comply with the limits for Class A 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 commercial
environment. 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. Operation of this equipment in a residential area is
likely to cause harmful interference in such case the user will be required to correct the
interference at the user’s expense.
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 A - “Limits and methods of measurement of radio interference
characteristics of information technology equipment”
•EN55024 –“Information technology equipment Immunity characteristics Limits
and methods of measurement”.
This is a Class A Product. In a domestic environment, this product may cause radio interference in
which case the user may be required to take adequate measures to prevent or correct the
interference.
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/EMC
directives.

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Warranty
Sealevel's commitment to providing the best I/O solutions is reflected in the Lifetime Warranty that is
standard on all Sealevel manufactured I/O 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 achieved ISO-9001:2015 certification in 2018.
Warranty Policy
Sealevel Systems, Inc. (hereafter "Sealevel") warrants that the Product shall conform to and perform in
accordance with published technical specifications and shall be free of defects in materials and
workmanship for the warranty period. In the event of failure, Sealevel will repair or replace the product at
Sealevel's sole discretion. Failures resulting from misapplication or misuse of the Product, failure to adhere
to any specifications or instructions, or failure resulting from neglect, abuse, accidents, or acts of nature
are not covered under this warranty.
Warranty service may be obtained by delivering the Product to Sealevel and providing proof of purchase.
Customer agrees to ensure the Product or assume the risk of loss or damage in transit, to prepay shipping
charges to Sealevel, and to use the original shipping container or equivalent. Warranty is valid only for
original purchaser and is not transferable.
This warranty applies to Sealevel manufactured Product. Product purchased through Sealevel but
manufactured by a third party will retain the original manufacturer's warranty.
Non-Warranty Repair/Retest
Products returned due to damage or misuse and Products retested with no problem found are subject to
repair/retest charges. A purchase order or credit card number and authorization must be provided in order
to obtain an RMA (Return Merchandise Authorization) number prior to returning Product.
How to obtain an RMA (Return Merchandise Authorization)
If you need to return a product for warranty or non-warranty repair, you must first obtain an RMA number.
Please contact Sealevel Systems, Inc. Technical Support for assistance:
Available Monday –Friday, 8:00 AM to 5:00 PM EST
Phone [phone]
Email [email protected]
Trademarks
Sealevel Systems, Incorporated acknowledges that all trademarks referenced in this manual are the
service mark, trademark, or registered trademark of the respective company.