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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© Sealevel Systems, Inc. 7104 Manual | SL9051 7/2021
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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© Sealevel Systems, Inc. 7104 Manual | SL9051 7/2021
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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© Sealevel Systems, Inc. 7104 Manual | SL9051 7/2021
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
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© Sealevel Systems, Inc. 7104 Manual | SL9051 7/2021
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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© Sealevel Systems, Inc. 7104 Manual | SL9051 7/2021
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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© Sealevel Systems, Inc. 7104 Manual | SL9051 7/2021
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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© Sealevel Systems, Inc. 7104 Manual | SL9051 7/2021
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.