SeaLevel SeaLINK+422 User manual

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© Sealevel Systems, Inc. 2106 Manual | SL9094 8/2022
USB to 1-Port RS-422 DB9
Serial Interface Adapter
User Manual | 2106

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© Sealevel Systems, Inc. 2106 Manual | SL9094 8/2022
Contents
CONTENTS............................................................................................................................................................................................................................2
BEFORE YOU GET STARTED..............................................................................................................................................................................................4
PRODUCT DESCRIPTION...................................................................................................................................................................................................5
FEATURES ...........................................................................................................................................................................................................................5
OPTIONAL ITEMS.................................................................................................................................................................................................................6
PRODUCT FAMILY ...............................................................................................................................................................................................................8
ELECTRICAL SPECIFICATIONS .......................................................................................................................................................................................12
CONNECTOR PIN OUT .......................................................................................................................................................................................................12
LINE TERMINATION &BIASING .........................................................................................................................................................................................12
TECHNICAL SPECIFICATIONS.........................................................................................................................................................................................13
TEMPERATURE RANGE.......................................................................................................................................................................................................13
POWER REQUIREMENTS ....................................................................................................................................................................................................13
MANUFACTURING .............................................................................................................................................................................................................13
HARDWARE CONFIGURATION .......................................................................................................................................................................................14
RUGGEDIZED OVERMOLD ENCLOSURE...............................................................................................................................................................................14
DB9M SERIAL CONNECTOR.............................................................................................................................................................................................14
ATTACHED USB CABLE ....................................................................................................................................................................................................14
SOFTWARE INSTALLATION INSTRUCTIONS................................................................................................................................................................15
SOFTWARE INSTALLATION.................................................................................................................................................................................................15
UPGRADING TO THE CURRENT SEACOM DRIVER...............................................................................................................................................................16
HARDWARE INSTALLATION............................................................................................................................................................................................16
VERIFYING INSTALLATION ................................................................................................................................................................................................20
UNINSTALL &UPGRADE INSTRUCTIONS ...........................................................................................................................................................................21
REMOVE HARDWARE USING DEVICE MANAGER ................................................................................................................................................................21
REMOVE SOFTWARE USING CONTROL PANEL....................................................................................................................................................................23
APPENDIX A – HANDLING INSTRUCTIONS.................................................................................................................................................................25

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© Sealevel Systems, Inc. 2106 Manual | SL9094 8/2022
ESD WARNINGS...............................................................................................................................................................................................................25
ELECTROSTATIC DISCHARGES (ESD) .............................................................................................................................25
GROUNDING METHODS .............................................................................................................................................25
APPENDIX B – TROUBLESHOOTING.............................................................................................................................................................................26
TROUBLESHOOTING/VERIFICATION FOR ASYNCHRONOUS SERIAL PRODUCTS.................................................................................................................. 26
APPENDIX C – RS-422 ELECTRICAL INTERFACE.......................................................................................................................................................30
APPENDIX D – ASYNCHRONOUS COMMUNICATIONS.............................................................................................................................................31
APPENDIX E – CABLE DRAWING...................................................................................................................................................................................32
APPENDIX F – HOW TO GET ASSISTANCE ..................................................................................................................................................................33
WARRANTY ........................................................................................................................................................................................................................34
WARRANTY POLICY ..........................................................................................................................................................................................................34
NON-WARRANTY REPAIR/RETEST....................................................................................................................................................................................34
HOW TO OBTAIN AN RMA (RETURN MERCHANDISE AUTHORIZATION)..............................................................................................................................34

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© Sealevel Systems, Inc. 2106 Manual | SL9094 8/2022
Before You Get Started
What’s Included
The SeaLINK+422 is shipped with the following items. If any of these items are missing or damaged,
contact Sealevel Systems.
•SeaLINK +422 USB to RS-422 cable
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. 2106 Manual | SL9094 8/2022
Product Description
The Sealevel Systems SeaLINK+422 serial interface adapter provides the PC with a single USB to RS-422
asynchronous serial port providing a versatile interface for common RS-422 needs. The SeaLINK+422
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-422 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.
The 2106 features programmable baud rate and data formats with 128-byte transmit and 384-byte receive
buffers. The USB serial adapter is compatible with all standard PC baud rates (300 baud and above) and
supports high-speed communication to 921.6K bps. The 2106 is powered by a host system USB port.
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 2106 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 overall adapter is 60 inches long and fully shielded to protect the 2106 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 Tx FIFO and 384-byte Rx FIFO
•Data rates from 300 bps to 921.6K bps
•Rugged construction using molded connectors
•Powered by USB connection
•Sealevel software supports Windows 98SE/ME/2000/XP/Vista/Windows 7 and Linux
operating systems
•DB-9M connector
•Hot-pluggable device
•Does not require opening the case
•No system resources are required (i.e., I/O ports or IRQs)

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© Sealevel Systems, Inc. 2106 Manual | SL9094 8/2022
Optional Items
Depending upon your application, you are likely to find one or more of the following items useful with the
SeaLINK+422. All items can be purchased from our website (www.sealevel.com) by calling our sales team
at [phone].
Cables & Converters
DB9 Female to DB9 Female RS-422 207M SMPTE Cable (Part# CA190)
The CA190 connects any Sealevel DB9 RS-422 device to a Sony
(or compatible) 207M (SMPTE) 9 Pin connector.
DB9 Female (RS-422) to DB9 Female (Opto 22 Optomux) Converter (Part#
DB103)
The DB103 is designed to convert a Sealevel DB9 male RS-422
connector to a DB9 female pinout compatible with AC24AT and
AC422AT Opto 22 ISA bus cards. This allows Optomux devices
to be controlled from any Sealevel RS-422 board with a DB9
male connector.

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© Sealevel Systems, Inc. 2106 Manual | SL9094 8/2022
Hubs
High Speed USB 2.0 4-Port Hub (Part# Hub4)
This 4-port hub allows you to connect more USB devices to a
computer such as Sealevel USB serial and digital I/O devices,
as well as digital cameras, scanners, mice, and keyboards.
Includes the hub, an AC power supply, and a six-foot USB cable.
High Speed USB 2.0 7-Port Hub (Part# Hub7)
This 7-port hub allows you to connect more USB devices to a
computer such as Sealevel USB serial and digital I/O devices,
as well as digital cameras, scanners, mice, and keyboards.
Includes the hub, an AC power supply, and a six-foot USB cable.
Optically Isolated 7-Port USB Hub (Part# Hub7i)
Sealevel's HUB7i is an optically isolated USB hub that
connects up to seven USB peripherals and protects the host
computer from voltages up to 5500 VAC. The HUB7i includes
an industrial grade wall-mount power supply that provides up
to 4000 VAC isolation. Supported in Windows, Linux, and other
USB aware operating systems, the HUB7i requires no separate
drivers and is easy to install. Simply

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© Sealevel Systems, Inc. 2106 Manual | SL9094 8/2022
Terminal Blocks
Terminal Block - DB9 Female to 5 Screw Terminals (RS-422/485) (Part# TB34)
The TB34 terminal block adapter offers a simple solution for
connecting RS-422 and RS-485 field wiring to a serial port. The
terminal block is compatible with 2-wire and 4-wire RS-485
networks and matches the RS-422/485 pin-out on Sealevel
serial devices with DB9 male connectors. A pair of
thumbscrews secures the adapter to the serial port and
prevents accidental disconnection. The TB34 is compact and
allows multiple adapters to be used on multi-port serial devices,
such as Sealevel USB serial adapters, Ethernet serial servers
and other Sealevel serial devices with two or more ports.
Terminal Block - DB9 Female to 9 Screw Terminals (Part# TB05)
The TB05 terminal block breaks out a DB9 connector to 9 screw
terminals to simplify field wiring of serial connections. It is ideal
for RS-422 and RS-485 networks, yet it will work with any DB9
serial connection, including RS-232. The TB05 includes holes
for board or panel mounting. The TB05 is designed to connect
directly to Sealevel DB9 serial cards or any cable with a DB9M
connector.
Terminal Block Kit - TB05 + CA127 Cable (Part# KT105)
The KT105 terminal block kit breaks out a DB9 connector to 9
screw terminals to simplify field wiring of serial connections. It
is ideal for RS-422 and RS-485 networks, yet it will work with any
DB9 serial connection, including RS-232. The KT105 includes
one DB9 terminal block (Item# TB05) and one DB9M to DB9F
72 extension cable (Item# CA127). The TB05 includes holes for
board or panel mounting. The TB05 is designed to connect
directly to Sealevel DB9 serial cards or any cable with a DB9M
connector.
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.

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© Sealevel Systems, Inc. 2106 Manual | SL9094 8/2022
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

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© Sealevel Systems, Inc. 2106 Manual | SL9094 8/2022
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