SeaLevel 270U User manual
Sealevel Systems, Inc.
Sealevel.com
Phone 864.843.4343
©Sealevel Systems, Inc. 270U Manual 2
SL9179 05/2012
Safety Instructions ..........................................................................................................................4
Introduction.......................................................................................................................................5
Features ..........................................................................................................................................5
Before You Get Started..................................................................................................................6
Advisory Conventions ...............................................................................................................6
What’s Included ...........................................................................................................................6
Optional Items..............................................................................................................................7
Installation .........................................................................................................................................8
Windows 98/ME/2000/XP/Vista/7™ Operating Systems ............................................8
Linux Support ...............................................................................................................................8
Hardware Description....................................................................................................................9
Optical Isolation ..........................................................................................................................9
USB Ports ........................................................................................................................................9
Status LEDs................................................................................................................................. 10
External Power .......................................................................................................................... 10
SeaLATCH® USB ............................................................................................................................ 11
SeaLATCH Locking USB Cables ........................................................................................... 12
Mounting Options ........................................................................................................................ 13
Technical Specifications ............................................................................................................ 14
Power Requirements ............................................................................................................... 14
Dimensions................................................................................................................................. 14
Weight........................................................................................................................................... 14
Environmental Specifications .............................................................................................. 14
Manufacturing ........................................................................................................................... 14
Appendix A –Troubleshooting............................................................................................... 15
Appendix B –How to Get Assistance.................................................................................... 16
Technical Support .................................................................................................................... 16
Appendix C –Silk Screen –SeaI/O-270U PCB ................................................................... 17
Appendix D –270U Board Mounting Outline.................................................................... 18
Appendix E –Compliance Notices......................................................................................... 18
Federal Communications Commission Statement ...................................................... 19
EMC Directive Statement....................................................................................................... 19
Warranty........................................................................................................................................... 20
©Sealevel Systems, Inc. 270U Manual 3
SL9179 05/2012
Warranty Policy.......................................................................................................................... 20
Non-Warranty Repair/Retest ................................................................................................ 20
How to Obtain an RMA (Return Merchandise Authorization) ................................. 20
Trademarks ................................................................................................................................ 20
©Sealevel Systems, Inc. 270U Manual 4
SL9179 05/2012
Electrostatic Discharges (ESD)
A sudden electrostatic discharge can destroy sensitive components. Proper packaging and
earthing rules must therefore be observed. Always take the following precautions.
Transport boards and cards in electrostatically secure containers or bags.
Keep electrostatically sensitive components in their containers, until they arrive at an
electrostatically protected workplace.
Only touch electrostatically sensitive components when you are properly earthed.
Store electrostatically sensitive components in protective packaging or on anti-static
mats.
Grounding Methods
The following measures help to avoid electrostatic damages to the device:
Cover workstations with approved antistatic material. Always wear a wrist strap
connected to workplace as well as properly grounded tools and equipment.
Use antistatic mats, heel straps, or air ionizers for more protection.
Always handle electrostatically sensitive components by their edge or by their casing.
Avoid contact with pins, leads, or circuitry.
Turn off power and input signals before inserting and removing connectors or
connecting test equipment.
Keep work area free of non-conductive materials such as ordinary plastic assembly aids
and Styrofoam.
Use field service tools such as cutters, screwdrivers, and vacuum cleaners which are
conductive.
Always place drives and boards PCB-assembly-side down on the foam.
©Sealevel Systems, Inc. 270U Manual 5
SL9179 05/2012
The SeaI/O-270U is an optically isolated 7-port USB hub that protects the host computer from
spikes, surges and ground loops commonly found in industrial environments. The hub is
powered by an industrial grade wall-mount power supply providing a full 500mA to each
attached USB peripheral. The SeaI/O-270U is ideal for adding USB ports to a SeaPAC
touchscreen HMI system, a Relio R1000 embedded solid-state industrial computer, or a SeaI/O
data acquisition “stack”.
The SeaI/O-270 integrates SeaLATCH USB ports, which are fully compatible with standard USB
cables. When used with the included USB cable with a SeaLATCH type B USB connector, the
metal thumbscrew provides a secure metal-to-metal connection to the hub and prevents
accidental cable disconnection. The hub’s seven SeaLATCH type A USB connectors can secure
USB peripherals to the hub in the same way. Additionally, a highly-retentive type B USB
connector helps prevent unintentional separation from a standard USB cable.
Provides 1500 VAC isolation on upstream USB port
Includes 7 USB downstream ports with 500mA available per port
SeaLATCH USB connectors provide locking connection
Native support in Windows 98SE/ME/2000/XP/Vista/7™, and Linux kernel v2.4 operating
systems
Status LEDs indicate external power, connection to host, and fault condition
High-retention USB type “B” connector prevents accidental disconnection of standard USB
cable
©Sealevel Systems, Inc. 270U Manual 6
SL9179 05/2012
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.
The SeaI/O-270U is shipped with the following items. If any of these items is missing or
damaged, please contact Sealevel for replacement.
SeaI/O-270U –SeaI/O 7-Port Isolated USB Hub
CA356 –USB Type A to SeaLATCH USB Type B Cable, 6’ in Length
TR123 –12VDC @ 2.5A Wall-Mount Power Supply
Sealevel Software CD –Manual Only
©Sealevel Systems, Inc. 270U Manual 7
SL9179 05/2012
Depending upon your application, you are likely to find one or more of the following items
useful with the SeaI/O-270U. All items can be purchased from our website or by calling +1
864-843-4343.
SeaLATCH USB Type A and Type B Device Cable, 72” (Item# CA332)
The CA332 is a USB device cable with SeaLATCH USB type A and type B
connectors. The metal thumbscrew on each connector provides a
secure metal-to-metal connection to devices with SeaLATCH USB ports.
SeaLATCH USB Type A to USB Type B Device Cable, 72” (Item# CA355)
The CA355 is a USB device cable with a SeaLATCH USB type A
connector and standard type B connector. This cable secures the
HUB7M to legacy USB peripheral devices.
USB Type A to SeaLATCH Type B Device Cable, 72” (Item# CA356)
The CA356 is a USB device cable with a SeaLATCH USB type B connector
and standard type A connector. This cable is included with all Sealevel
USB products with an integrated SeaLATCH type B USB port.
USB Type A to USB Type A, 3 Meter Extension Cable (Item# CA214)
The CA214 is a fully rated USB extension cable that adds three meters
to any existing USB cable (maximum 5 meters). The CA214 has a type
A male connector on one end and a type A female connector on the
other end.
USB Type A to USB Type B, 72” Device Cable (Item# CA179)
The CA179 is a 72" USB device cable that connects USB peripherals with
a Type B connector to the Type A connector on a host computer. The
CA179 is USB 2.0 compliant and is compatible with USB 1.1 and 1.0
devices.
USB Type A to USB Type B, 5 Meter Device Cable (Item# CA215)
The CA215 is a fully rated 5 meter device cable that connects USB
peripherals with a type B connector to the type A connector on a host
PC. This cable provides the maximum 5 meters (16 feet) for a USB
connection.
©Sealevel Systems, Inc. 270U Manual 8
SL9179 05/2012
1. The SeaI/O-270U is fully supported as a generic USB hub device in Windows
98/ME/2000/XP/Vista/7™operating systems and requires no separate driver. The
Sealevel Software CD is included only for distribution of the user manual and other
literature.
2. Simply connect the included wall-mount power supply to the SeaI/O-270U and connect
to an AC outlet.
3. Using the included SeaLATCH USB device cable, plug the SeaI/O-270U into an available
USB port on your host system.
4. The ‘Found New Hardware’ screen will appear and the hub will be automatically
recognized as a generic USB hub device.
5. The hub is ready to use when you see the screen ‘Your USB hub is installed and ready to
use.’
Windows NT is not USB aware and thus cannot support this device.
USB devices are supported in Linux kernel v2.4 or better. Refer to the help files included with
your Linux distribution for specific instructions on adding generic USB hub devices.
©Sealevel Systems, Inc. 270U Manual 9
SL9179 05/2012
The SeaI/O-270U is an optically isolated USB hub that connects up to seven USB peripherals
while protecting the host computer from voltages up to 1500 VAC. This protects the host
computer from potentially damaging voltage spikes, power surges, and ground loops
commonly found in industrial and OEM applications.
The SeaI/O-270U integrates SeaLATCH USB ports, which are fully compatible with standard USB
cables. When used with the included USB cable with a SeaLATCH type B USB connector, the
metal thumbscrew provides a secure metal-to-metal connection to the hub and prevents
accidental cable disconnection.
Additionally, a highly-retentive type B USB connector helps prevent unintentional separation
from a standard USB cable. The SeaLATCH type B locking connector and high retention type B
port are shown below.
The hub’s seven SeaLATCH type A locking USB connectors can secure USB peripherals to the
hub in the same way. Two of the SeaLATCH type A USB ports are shown below. Each of the
seven downstream type A USB ports provides a full 500mA to USB peripherals.
©Sealevel Systems, Inc. 270U Manual 10
SL9179 05/2012
Status LEDs are also included on the front of the SeaI/O-270U module to indicate the following
information:
ENABLE (Yellow) –Lights when the USB hub is enumerated by the host system.
FAULT (Red) –Lights when there is a problem with a downstream USB port. Disconnect
the downstream devices one at a time until the status returns to normal.
EXT POWER (Green) –Indicates the external power supply is properly connected to the
hub and an AC power source.
The SeaI/O-270U includes an industrial grade wall-mount power supply (Item# TR123) that
outputs 12VDC @ 2.5A. Power is input via a 5mm 2-position removable screw terminal block
(shown below). To prevent accidental disruption of power, the terminal block includes mounting
screws for securing to the hub.
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