SeaLevel SeaLINK+232-DB9 User manual

SEALINK +232-DB9
User Manual | 2105R

Contents
CONTENTS...........................................................................................................................................................2
BEFORE YOU GET STARTED ...............................................................................................................................3
PRODUCT DESCRIPTION..................................................................................................................................... 4
ELECTRICAL SPECIFICATIONS.........................................................................................................................11
TECHNICAL SPECIFICATIONS..........................................................................................................................12
HARDWARE CONFIGURATION..........................................................................................................................13
INSTALLATION ..................................................................................................................................................14
HARDWARE INSTALLATION .............................................................................................................................16
APPENDIX A - HANDLING INSTRUCTIONS......................................................................................................24
APPENDIX B – TROUBLESHOOTING................................................................................................................25
APPENDIX C – ELECTRICAL INTERFACE ........................................................................................................29
APPENDIX D – ASYNCHRONOUS COMMUNICATIONS ..................................................................................30
APPENDIX E – CABLE DRAWING .....................................................................................................................31
APPENDIX F – HOW TO GET ASSISTANCE .....................................................................................................32
WARRANTY ........................................................................................................................................................33

Before You Get Started
What’s Included
The 2105R is shipped with the following items. If any of these items are missing or damaged, please
contact Sealevel for replacement.
•2105R – USB to RS-232 Single Port Serial Interface Adapter
•Serial Loopback Plug – Diagnostics/Troubleshooting
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.

Product Description
The Sealevel Systems SeaLINK+232-DB9 serial interface adapter provides the PC with a single USB to RS-
232 asynchronous serial port providing a versatile interface for common RS-232 needs. The SeaLINK+232
connects to a PC’s external USB port, so it does not require opening the computer case. Resources such
as IRQs and I/O addresses are also not utilized.
The SeaLINK® USB to RS-232 serial adapter utilizes Sealevel’s expertise in military-grade designs by
incorporating a ruggedized, overmolded enclosure design. This improves the reliability and durability in
industrial and mobile applications such as GPS navigation systems, barcode readers, signature input
devices, serial printers, scales, and similar applications.
The 2105R features programmable baud rate and data formats with 128-byte receive and 256-byte transmit
buffers. The USB serial adapter is compatible with all standard PC baud rates (300 bps and above) and
supports high-speed communication to 921.6K bps. The 2105R is powered by the USB port and status LEDs
molded into the enclosure indicate serial data activity and connection to the host.
Sealevel SeaCOM USB software drivers and utilities make installation and operation easy using Windows
and Linux operating systems. After installing the software, simply plug the 2105R into an available USB port
and the serial port is recognized as a standard COM port by the host system enabling compatibility with
legacy software.
The attached cable is 44 inches long and fully shielded to protect the 2105R from RF and EMI interference
that is common in mobile and industrial environments. Standard operating temperature range is 0 - +70°C,
and extended temperature range (-40 - +85°C) is optional.
Features
•Compliant with RoHS and WEEE directives
•High-speed UART with 128-byte Rx FIFO and
256-byte Tx FIFO
•Data rates from 300 bps to 921.6K bps
•All modem control signals implemented
•Powered by USB connection
•DB9M connector

Optional Items
Depending upon your application, you are likely to find one or more of the following items useful with the
2105R. All items can be purchased from our website (www.sealevel.com)by calling our sales team at (864)
843-4343.
Cables
DB9F to DB25M (RS-232) Extension Cable (Part# 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 (Part# 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.
DB9 Female to DB9 Female Null Modem Cable (Part# CA213)
The CA213 is a 10' null modem cable with DB9 female
connectors on both ends. Null modem cables cross pins 2 and
3 (Tx and Rx) and loop back handshaking signals (RTS to CTS
and DTR to DSR) to allow two computers, with DB9 serial ports,
to communicate.

Hubs
High Speed 4-Port USB 2.0 Hub with SeaLATCH USB Ports (Part# HUB4P)
The hub is USB 2.0 compliant, providing a full 480M bps data
rate to the host, and is backwards compatible with USB 1.1 and
1.0 devices. The HUB4P includes a wall-mount AC adapter that
supplies a full 500mA to each attached USB peripheral. The
power supply outputs 5VDC @ 2.4A and has a locking DC
connector to prevent accidental removal of the power cable.
High Speed 7-Port USB 2.0 Hub (Part# Hub 7P)
The HUB7P is USB 2.0 compliant, providing a full 480M bps data
rate to the host, and is backwards compatible with USB 1.1 and
1.0 devices. The powered hub includes a wall-
mount AC
adapter that supplies a full 500mA to each attached USB
peripheral. The power supply outputs 5VDC @ 4A and has a
locking DC connector to prevent accidental removal of the
power cable. The hub is housed in a rugged plastic enclosure
and status LEDs indicate external power, connection to the
host, and fault conditions.

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 is an excellent choice for using
available infrastructure wiring.
DB9 Female to DB25 Male - RS-232 Converter (ParT# CA241)
Converts an RS-232 DB9 Male connector to an RS-232 DB25
Male connector.
DB9 Male to DB9 Female Low Profile Null Modem Adapter (Part# DB113)
DB9 Male to DB9 Female Low Profile Null Modem Adapter.
DB9 Female to DB9 Male - Serial Surge Suppressor (Part# SS-DB9)
User configurable for use with male or female DB9 ports, the
SS-DB9 protects all 9 lines, plus D shell chassis. Convenient
DB9 input and output connects directly to the protected port,
obtaining a ground outlet from the computer chassis. Surge
suppression is handled with balanced arrays of high-speed
avalanche diodes that
divert excess energies created by
electrostatic discharges, faulty wiring, or lightning away from
network interface connections.
Product Family
Whether you require one serial port or 16, SeaLINK USB serial adapters will have you quickly communicating
with RS-232, RS-422, and RS-485 peripherals. Unlike traditional UART-based devices, SeaLINK USB
products use a state-machine architecture that reduces host processor overhead for faster, more reliable
communications. Sealevel's SeaCOM software drivers and utilities make installation and operation easy
using Windows and Linux operating systems.

Part # Description
2105R USB to 1-Port RS-232 DB9 Serial Interface Adapter
2106 USB to 1-Port RS-422 DB9 Serial Interface Adapter
2113 USB to 1-Port RS-232, RS-422, RS-485 DB9 Serial Interface Adapter
2123 USB to 1-Port RS-232, RS-422, RS-485 (Software Configurable) DB9 Serial Interface Adapter
2101 USB to 1-Port RS-232 DB25 Serial Interface Adapter
2102 USB to 1-Port RS 422, RS-485, RS-530 DB25 Serial Interface Adapter
2103 USB to 1-Port Isolated RS-232 DB25 Serial Interface Adapter
2104 USB to 1-Port RS 422, RS-485, RS-530 DB25 Serial Interface Adapter
2108 Embedded USB to 1-Port RS-232 DB9 Serial Interface Adapter with Low Profile PC Bracket
2128 Embedded USB to 1-Port RS-232, RS-422, RS-485 (Software Configurable) DB9 Serial
Interface Adapter with PC Bracket
2213 USB to 2-Port Isolated RS-232, RS-422, RS-485 DB9 Serial Interface Adapter
2223 USB to 2-Port RS-232, RS-422, RS-485 (Software Configurable) DB9 Serial Interface Adapter
2201 USB to 2-Port RS-232 DB9 Serial Interface Adapter
2202 USB to 2-Port RS-422, RS-485 DB9 Serial Interface Adapter
2203 USB to 2-Port RS-232, RS-422, RS-485 DB9 Serial Interface Adapter
2208 Embedded USB to 2-Port RS-232 DB9 Serial Interface Adapter with Standard Size PC
Bracket
2228 Embedded USB to 2-Port RS-232, RS-422, RS-485 (Software Configurable) DB9 Serial
Interface Adapter with PC Bracket
2401 USB to 4-Port RS-232 DB9 Serial Interface Adapter
2402 USB to 4-Port RS-422, RS-485 DB9 Serial Interface Adapter
2403 USB to 4-Port RS-232, RS-422, RS-485 DB9 Serial Interface Adapter
2404 USB to 4-Port RS-232 RJ45 Serial Interface Adapter
2407 USB to 4-Port RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter
2423 USB to 4-Port RS-232, RS-422, RS-485 (Software Configurable) DB9 Serial Interface Adapter
2433 USB to 4-Port RS-232, RS-422, RS-485 (Software Configurable) DB9 Serial Interface Adapter
641U USB to RS-232 RJ45 Serial Interface Adapter

647U USB to RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter
2801 USB to 8-Port RS-232 DB9 Serial Interface Adapter
2802 USB to 8-Port RS-422, RS-485 DB9 Serial Interface Adapter
2803 USB to 8-Port RS-232, RS-422, RS-485 DB9 Serial Interface Adapter
2804 USB to 8-Port RS-232 RJ45 Serial Interface Adapter
2807 USB to 8-Port RS-232, RS-485, RJ45 VersaCom Serial Interface Adapter
2823 USB to 8-Port RS-232, RS-422, RS-485 (Software Configurable) DB9 Serial Interface Adapter
2833 USB to 8-Port RS-232, RS-422, RS-485 DB9 Serial Interface Adapter
681U USB to RS-232 RJ45 Serial Interface Adapter
687U USB to RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter
2161 USB to 16-Port RS-232 RJ45 Serial Interface Adapter
2167 USB to 16-Port RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter
2108S Embedded USB to 1-Port RS-232 DB9 Serial Interface Adapter with Standard Size PC
Bracket
2123-OEM USB to 1-Port RS-232, RS-422, RS-485 (Software Configurable) DB9 Serial Interface Adapter
2223-KT USB to 2-Port RS-232, RS-422, RS-485 (Software Configurable) DB9 Serial Interface Adapter
2223-OEM USB to 2-Port RS-232, RS-422, RS-485 (Software Configurable) DB9 Serial Interface Adapter
641U-OEM USB to RS-232 RJ4 Serial Interface Adapter
647U-OEM USB to RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter
681U-OEM USB to RS-232 RJ45 Serial Interface Adapter
687U-OEM USB to RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter
2106-RoHS RoHS Compliant USB to 1-Port RS-422 DB9 Serial Interface Adapter
2102-RoHS RoHS Compliant USB to 1-Port RS-422, RS-485, RS-530 DB25 Serial Interface Adapter
2201-RoHS RoHS Compliant USB to 2-Port RS-232 DB9 Serial Interface Adapter
2203-RoHS RoHS Compliant USB to 2-Port RS-232, RS-422, RS-485 DB9 Serial Interface Adapter
2401-RoHS RoHS Compliant USB to 4-Port RS-232 DB9 Serial Interface Adapter
2403-RoHS RoHS Compliant USB to 4-Port RS-232, RS-422, RS-485 DB9 Serial Interface Adapter
2801-RoHS RoHS Compliant USB to 8-Port RS-232 DB9 Serial Interface Adapter

2404-RoHS RoHS Compliant USB to RS-232 RJ45 Serial Interface Adapter for Powering 5VDC Serial
Peripherals
2402-DC12 RoHS Compliant USB to RS-232 RJ45 Serial Interface Adapter for Powering 12VDC Serial
Peripherals
2404-DC24 USB to RS-232 RJ45 Serial Interface Adapter for Powering 24VDC Serial Peripherals
2407-DC05 USB to 4-Port RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter for Powering 5VDC
Serial Peripherals
2407-DC12 USB to 4-Port RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter for Powering 12VDC
Serial Peripherals
2407-DC24 USB to 4-Port RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter for Powering 24VDC
Serial Peripherals
2804-DC05 USB to 8-Port RS-232 RJ45 Serial Interface Adapter for Powering 5VDC Serial Peripherals
2804-DC12 USB to 8-Port RS-232 RJ45 Serial Interface Adapter for Powering 12VDC Serial Peripherals
2804-DC24 USB to 8-Port RS-232 RJ45 Serial Interface Adapter for Powering 24VDC Serial Peripherals
2807-DC05 USB to 8-Port RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter for Powering 5VDC
Serial Peripherals
2807-DC12 USB to 8-Port RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter for Powering 12VDC
Serial Peripherals
2807-DC24 USB to 8-Port RS-232, RS-485 RJ45 VersaCom Serial Interface Adapter for Powering 24VDC
Serial Peripherals

Electrical Specifications
The SeaLINK+232-DB9 utilizes a USB UART. This chip features programmable baud rate, data format, 128-
byte RX buffer, and 256-byte RX buffer. The RS-232 transceiver supports data rates from 300 baud up to
921.6K baud. Refer to Appendix C for cable length limitations.
Connector Pin Out
RS-232 (DB-9 MALE)
Pin # Signal Name Mode
1 DCD Data Carrier Detect Input
2 RXD Receive Data Input
3 TXD Transmit Data Output
4 DTR Data Terminal Ready Output
5 GND Ground
6 DSR Data Set Ready Input
7 RTS Request To Send Output
8 CTS Clear To Send Input
9 RI Ring Indicator Input
These assignments meet EIA/TIA/ANSI-574 DTE specifications for DB-9 type connectors. Please
terminate any control signals that are not going to be used. The most common way to do this is connect
RTS to CTS and RI. Also, connect DCD to DTR and DSR. Terminating these pins, if not used, will help
ensure you get the best performance from your adapter.

Technical Specifications
Environmental Specifications
Specification Operating Storage
Temperature Range 0º to 70º C (32º to 158º F) -50º to 105º C (-58º to 221º F)
Humidity Range 10 to 90% R.H. Non-Condensing 10 to 90% R.H. Non-Condensing
Power Requirements
Supply line +5 VDC
Rating 100 mA
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.

Hardware Configuration
Ruggedized Overmold Enclosure
The 2105R is built for harsh conditions and features a military-grade, ruggedized, overmolded enclosure.
This improves the reliability and durability in industrial and mobile applications.
DB9M Serial Connector
The 2105R includes a DB9 male serial connector on one end of the device. The pin assignments for this
connector are detailed in the previous Electrical Specifications section.
Status LEDs
A pair of status LEDs indicate:
Tx (Red) – Light when data is being transmitted
Rx (Green) – Light when data is being received
Attached USB Cable
The attached cable has a clear jacket over a braided shield. The cable is approximately 44” overall with a
USB Type A connector, which is compatible with any available USB port on a host computer or USB hub.
Self-powered hubs can be used as long as they provide a minimum of 100mA to each USB port. The 2105R
is compatible with USB 2.0 ports and is USB 1.1 compliant.

Installation
SEACOM SOFTWARE INSTALLATION
Windows Installation
Do not connect the device to a USB port until the software has been fully installed.
To install Sealevel Systems software, you must log in as an administrator or have
administrator privileges in Windows.
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
[e-mail] 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 (#2105R) 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.

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/2105Rmode.
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: [e-mail].
Upgrading to the current SeaCOM driver
1. Download the current driver using the Instructions from the Installation section above.
Please take note of the destination directory it will save to.
2. Uninstall the currently loaded driver SeaCOM driver found in the Control Panel. Prior to
Windows Vista SeaCOM will be populated in ‘Add/Remove Programs’ list. In Vista and
newer OSs it will be found in the ‘Programs and Features’ list.
3. Navigate to the Device Manager and remove the Sealevel adapter by right clicking on the
line item choosing ‘Uninstall.’ Depending on your product, it can be found under either
‘Multiport Serial adapters’ or ‘Universal Serial Bus controllers.’
4. Single port ISA cards and PCMCIA cards will need to be uninstalled under ‘Ports (COM &
LPT).’
5. In the Device Manager under ‘Action,’ choose ‘Scan for Hardware changes’. This will
prompt the installation of the adapter and associate it with the newly installed SeaCOM
driver.
6. Proceed with the hardware installation of your SeaLINK USB serial adapter.
Windows NT is not USB aware, and thus, it cannot support this device.

Hardware Installation
The SeaLINK+232 can be connected to any Upstream Type “A” USB port at the PC host or an Upstream
Hub. Since it is hot pluggable, there is no need to power down your computer prior to installation. The
SeaLINK+232 requires no user hardware configuration. Once you have installed the software simply plug
the USB connector into an available USB port. The drivers that were installed during setup will automatically
be used to configure the adapter. In Windows XP and previous OS versions, you should see one or more
“Found New Hardware” windows, indicating the actual device being created and enumerated. See below.
In Vista and newer operating systems, the enumeration occurs automatically without user interaction.
Windows XP
Once the device has been connected, the Found New Hardware wizard will appear twice – first for
the USB part, and then for the serial port that you are installing.
The following instructions are applicable to the Windows XP operating system and may vary depending
on your version of Windows.
1. After the software installation is complete, plug the 2105R into an available USB port on
the computer or USB hub.
2. A ‘Found New Hardware’ alert will appear above the system tray.
3. The ‘Found New Hardware Wizard’ will appear.

4. Choose ‘No, not this time’ and click ‘Next’ to proceed.
5. Choose ‘Install the software automatically’ and click ‘Next.’

6. The ‘Hardware Wizard’ will search for the proper drivers; however, it may be interrupted by
a message stating that the hardware has not passed Windows certification. Click ‘Continue
Anyway.’
All SeaCOM software and drivers have been fully tested by Sealevel. Clicking ‘Continue
anyway’ will not harm your system.
7. The appropriate drivers for your SeaLINK device and version of Windows will be installed
as shown.

8. Click ‘Finish’ to complete the installation of your hardware.
The ‘Found New Hardware Wizard’ appears a second time; repeat steps 4-8.
9. When the ‘Found New Hardware’ alert informs you that your hardware is installed and
ready to use, you can proceed with verifying the installation to check functionality and/or
locate the COM port assignments, if necessary.

Verifying Installation
To confirm that the serial port has been successfully installed, look in Device Manager under ‘Ports (COM
&LPT)’ and the COM assignment will be included with the associated COM number in parentheses.
To access Device Manager, follow the steps below:
1. Right click on ‘My Computer’ icon on your desktop or in the Start menu.
2. Click ‘Manage’ in the fly out menu to launch the ‘Computer Management’ console window.
3. In the left pane under ‘System Tools,’ click ‘Device Manager.’
4. In right pane near the bottom, expand the ‘Ports (COM & LPT)’ section by clicking the ‘+’
symbol.
5. You should now see the COM assignment with the associated COM number in
parentheses.
Your system will assign the next available COM number, which will vary by computer
(COM4 as shown in this example).