SeaLevel SeaLINK REL-16 User manual

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© Sealevel Systems, Inc. 8208 Manual | SL9108 7/2021
SeaLINK REL-16
User Manual | 8208

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© Sealevel Systems, Inc. 8208 Manual | SL9108 7/2021
Contents
INTRODUCTION ...................................................................................................................................................3
Other Sealevel USB Digital I/O Products................................................................................................................3
BEFORE YOU GET STARTED ...............................................................................................................................4
What’s Included.....................................................................................................................................................4
Advisory Conventions.............................................................................................................................................4
Optional Items .......................................................................................................................................................5
SOFTWARE INSTALLATION................................................................................................................................6
Windows Installation .............................................................................................................................................6
PHYSICAL INSTALLATION..................................................................................................................................7
PROGRAMMING THE SEALINK REL-16..............................................................................................................8
Programming for Windows ...................................................................................................................................8
Samples and Utilities .............................................................................................................................................8
Digital I/O Interface ...............................................................................................................................................8
Serial String............................................................................................................................................................8
Output Ports (Reed Relays) ....................................................................................................................................9
Pin Assignments (Removable Terminal Block) .......................................................................................................9
ELECTRICAL CHARACTERISTICS .....................................................................................................................10
Features ...............................................................................................................................................................10
SPECIFICATIONS ...............................................................................................................................................11
Output Relays ......................................................................................................................................................11
Temperature Range .............................................................................................................................................11
Manufacturing.....................................................................................................................................................11
EXAMPLE CIRCUITS ..........................................................................................................................................12
APPENDIX A –TROUBLESHOOTING................................................................................................................13
APPENDIX B –HOW TO GET ASSISTANCE .....................................................................................................14
APPENDIX C –SILK SCREEN - 8208 PCB ........................................................................................................15
APPENDIX D –COMPLIANCE NOTICES ..........................................................................................................16
Federal Communications Commission (FCC) Statement ......................................................................................16
WARRANTY ........................................................................................................................................................17

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© Sealevel Systems, Inc. 8208 Manual | SL9108 7/2021
Introduction
The SeaLINK REL-16 provides 16 reed relays that can latch power, data, or other electronic signals for
control applications. The adapter is USB 1.1 compliant.
The SEALINK REL-16 is designed to be used under Windows 98/ME/2000/XP. The SeaI/O API (Application
Programmer Interface included in the software provides a variety of useful high-level function calls
implemented in a Windows dynamic link library (DLL). This API gives access to the SeaLINK REL-16 I/O
from Windows-based platforms such as Visual C++. In addition to the API, SeaI/O includes an ActiveX
control along with sample code and utilities to simplify software development.
Other Sealevel USB Digital I/O Products
Model No.
Part No.
Description
SeaLINK PLC-16
(P/N 8206)
- 8 Form C Relays/8 Opto-isolated Inputs
SeaLINK DIO-16
(P/N 8209)
- 8 Reed Relays/8 Opto-isolated Inputs
SeaLINK ISO-16
(P/N 8207)
- 16 Opto-isolated Inputs
SeaLINK PIO-48
(P/N 8203)
- 48 TTL Inputs/Outputs
SeaLINK PIO-96
(P/N 8205)
- 96 TTL Inputs/Outputs

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Before You Get Started
What’s Included
The SeaLINK REL-16 is shipped with the following items. If any of these items are missing or damaged,
please contact Sealevel for replacement.
•SeaLINK REL-16 Adapter
•USB A to B Cable, Part# CA179
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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Optional Items
Depending upon your application, you are likely to find one or more of the following items useful for
interfacing the SeaLINK REL-16 to real-world signals. All items can be purchased from our website
(www.sealevel.com) or by calling [phone].
•DIN Rail Clips (Part Number DR102)
A pair of brackets, clips, and hardware necessary for DIN rail mounting the SeaLINK REL-16.
•2U 19” Rack Tray (Part Number RK2U)
Standard 2U rack tray for supporting SeaLINK and other devices.
•Clamp for Rack Tray (Part Number RK-CLAMP)
Metal clamp and necessary hardware to secure SeaLINK or other devices to the RK2U rack tray.
•High Speed USB 2.0 4-Port Hub (Part Number HUB4)
AC powered 4-port USB hub, AC adapter, and USB cable.
•High Speed USB 2.0 7-Port Hub (Part Number HUB7)
AC powered 7-port USB hub, AC adapter, and USB cable.

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Software Installation
Windows Installation
Do not connect the SeaLINK REL-16 Adapter to the host USB device 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 [e-mail] to
receive access to the legacy driver download and installation instructions.
1. Begin by locating, selecting, and installing the correct software from the Sealevel software
driver database.
2. Select the Part Number (#8208) for your adapter from the listing.
3. Select the download for the SeaIO Classic for Windows (Software: SeaIO Classic V5 - Windows
- Sealevel.) The setup file will automatically detect the operating environment and install the
proper components. Next (depending on your browser) select the ‘Run this program from its
current location’ or ‘Open’ option. Follow the information presented on the screens that follow.
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 available to remove SeaIO files
and registry/INI file entries from the system.
4. Go to the “Add New Hardware Wizard” in the Control Panel.
5. When the Wizard asks if you want Windows to search for the new hardware, choose “No, I want
to select the hardware from a list.”
6. Scroll through the list of categorized hardware and select ‘SeaIO Devices.’ If this is the first
SeaIO device you may need to select ‘Other Devices’ and ‘Sealevel Systems, Inc.’ instead of
‘SeaIO Devices.’
7. Click “Next.”
8. Select the card model and press “Next.”
9. The Wizard will guide you through a few more informational prompts; continue to click “Next”
until it is completed.
10. Your card’s resource assignments may be adjusted through the Device Manager (if, for
instance, you need to change the I/O port address Windows assigned when you installed the
card).
11. Windows software installation is complete.
Windows NT is not USB aware and thus cannot support the SeaLINK REL-16.

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Physical Installation
The SeaLINK REL-16 can be installed in any open USB port.
Do not plug the unit into a USB port until the software has been fully installed.
1. Simply connect the SeaLINK REL-16 to your USB port with the supplied cable.
2. The software drivers installed during setup will automatically recognize and configure the device.
3. You should see one or more “New Hardware Found” windows, indicating the actual device being
created.
4. Next, view your system’s Device Manager.
5. You should have a new ‘SeaIO 8208’ in the SeaI/O Device heading indicating the installation was
successful.
The SeaLINK REL-16 is now ready for use.

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Programming the SeaLINK REL-16
Sealevel’s SeaI/O software is available to assist in the development of reliable applications for the Sealevel
Systems family of digital I/O adapters. Included in Sealevel’s software are driver functions for use in
accessing the I/O as well as helpful samples and utilities.
Programming for Windows
The SeaI/O API (Application Programmer Interface) provides a variety of useful high-level function calls
implemented in a Windows dynamic link library (DLL). The API is defined in the help file
(Start/Programs/SeaIO/SeaIO Help) under “Application Programmers Interface”. This help file also
includes detailed information dealing with installation / removal of the software and information about
latency, logic states, and device configuration.
For C language programmers we recommend using the API to access the SeaLINK REL-16. If you are
programming in Visual Basic, using the ActiveX control included with SeaI/O is advised.
Samples and Utilities
A variety of sample programs and utilities (both executable and source code) are included with SeaI/O.
Further documentation on these samples can be found by selecting “Start/Programs/SeaIO/Sample
Application Description”. Information about where the files are physically stored on your disk is also
included in this same file.
Digital I/O Interface
The SeaLINK REL-16 provides two parallel input/output (I/O) ports. The ports are organized as ports A and
B. The SeaLINK REL-16 is a line-powered device requiring a USB port capable of sourcing 500 mA.
Serial String
Each device has an eight digit alphanumeric serial string stored in non-volatile memory. On the Windows
platforms, this number is used to give each unit a separate identity. This identity allows the device to be
moved to any USB port or hub port on your computer while retaining its device number. If a device becomes
damaged and is replaced the new device should be given the same serial string as the device it is replacing.
This string is stored in an EEPROM along with other critical information. This EEPROM is read during
enumeration. The device should not be unplugged during its enumeration due to remote possibility that the
data in the EEPROM could be corrupted if power is removed during a read/write cycle to the EEPROM.
Enumeration is complete when the LED is lit.
The control panel utility provides the capability to read or modify this string. However, setting the same
string for two units connected to the same computer will cause the second unit to fail enumeration, and
make it invisible to the operating system. Should this occur, unplug one unit, and set the serial string for
the other unit to a different string.

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Output Ports (Reed Relays)
Reed relays provide very high quality, long life, low power, dry contact switch closures. Reed relays are not
suited for high current applications, or inductive loads. The relays are normally open, and close when
energized. Writing a logic value of one or zero will change the state. Refer to the Application Programmers
Interface for more information.
Pin Assignments (Removable Terminal Block)
Port A Bit
Port A Terminals
0
0,1
1
2,3
2
4,5
3
6,7
4
8,9
5
10,11
6
12,13
7
14,15
Port B Bit
Port B Terminals
0
0,1
1
2,3
2
4,5
3
6,7
4
8,9
5
10,11
6
12,13
7
14,15
Side Panel View Port A
7 6 5 4 3 2 1 0 Port:A
E
Side Panel View Port B
7 6 5 4 3 2 1 0 Port:B

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Electrical Characteristics
Features
•16 SPST Reed relays
•Highly reliable 10 VA DIP reed relays utilized
•Removable screw terminals
•Powered by USB port

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Specifications
Output Relays
Contact Max Power Rating
10 W
Contact Voltage Maximum
100 VDC/VAC
Contact Current Maximum
.5 A AC/DC RMS
Contact Resistance, Initial
.15 Ω
Rated Life
Low Load: 200 million closures
Maximum Load: 100 million closures
Contact Speed
Operate: .5 mS
Release: .5 mS
Bounce: .5 mS
Maximum Operating Speed
600 Hz
Temperature Range
Operating
0°C - 70°C
Storage
-50°C - 105°C
Power Consumption
Supply line
+5 VDC
Rating
500 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.

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Example Circuits
Output Circuit

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© Sealevel Systems, Inc. 8208 Manual | SL9108 7/2021
Appendix A –Troubleshooting
Following these simple steps can eliminate most common problems.
1. Install software first. After installing the software then proceed to adding the hardware. This places
the required installation files in the correct locations.
2. Read this manual thoroughly before attempting to install the adapter in your system.
3. Use Device Manager under Windows to verify proper installation.
4. Use the SeaIO Control Panel applet or the Device Manager’s property page for card identification
and configuration.
If these steps do not solve your problem, please call Sealevel Systems’ Technical Support, [phone].
Our technical support is free and available Monday through Friday from 8:00 AM - 5:00 PM, Eastern Time.
For email support contact supp[email protected].

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© Sealevel Systems, Inc. 8208 Manual | SL9108 7/2021
Appendix B –How To Get Assistance
Begin by reading through the Trouble Shooting Guide in Appendix A. If assistance is still needed please see
below.
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.
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.
Sealevel Systems maintains a Home page on the Internet. Our home page address is www.sealevel.com.
The latest software updates, and newest manuals are available via our FTP site that can be accessed from
our home page.
Technical support is available Monday to Friday from 8:00 AM to 5:00 PM, Eastern Time. Technical support
can be reached at [phone]. For email support contact sup[email protected].
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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© Sealevel Systems, Inc. 8208 Manual | SL9108 7/2021
Appendix C –Silk Screen - 8208 PCB

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© Sealevel Systems, Inc. 8208 Manual | SL9108 7/2021
Appendix D –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 users 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, 8:00AM to 5:00PM EST
Phone [phone]
Email [email protected]om
Trademarks
Sealevel Systems, Incorporated acknowledges that all trademarks referenced in this manual are the service
mark, trademark, or registered trademark of the respective company.