August 2008 - Issue 8 Vol. 7

Eagles’ founding member Bernie Leadon suggested the band’s name based on a book of the Hopi Indians authored by?

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First 10 correct responses
win Sealevel stuff.

Led Zeppelin front man Robert Plant was actually the band’s second choice. Their first choice turned the job down for a solo career and recommended Plant instead. Who was the singer?

Terry Reid


Overcome the perils
of moving data
via RS-485

USB to RS-232/422/485 Serial Interface Adapters
The SeaLINK® 2123 and 2223 USB to serial interface adapters are ideal for adding one or two multi-interface COM ports via USB.
• Serial ports are individually software
   configurable for RS-232, RS-422, or RS-485
• Status LEDs indicate power, serial data
  activity, and electrical interface
• USB bus powered with SeaLATCH® locking USB
• DIN rail mounting clips available

Read about the 2123 and 2223 USB serial adapters.


Compact USB Digital I/O Solutions – SeaDAC Lite
SeaDAC Lite USB digital I/O modules provide a low I/O count solution in a small, rugged enclosure. Modules are perfect for applications such as process control, facility management, security, and broadcast automation. 
• Models available with optically isolated inputs,   Reed or Form C relay and TTL outputs
• Powered by USB connection and secured with   SeaLATCH locking USB connector
• Durable plastic enclosure with flexible
  mounting options
• DIN rail mounting clips available

See all SeaDAC Lite modules on our website.

Tech Lowdown– DR105 DIN Rail Clips

Do you want to mount your devices to DIN rail, but they don’t have DIN rail clips? If your device has flanges or mounting ears, you can use the Sealevel DIN rail mounting clips (Item# DR105) to make virtually any device DIN rail compatible.

The durable plastic clips mount to flanges with included self-tapping screws. Two sets of different length screws are included that allow the clips to be installed on thick plastic or thin metal flanges. Once installed, the devices are then easily mounted to all profiles of 35mm wide DIN rail (commonly called “Top Hat” rail).

For convenient field installation and service, order the DR105 DIN rail clips to easily mount your I/O devices near your industrial control equipment.

Embedded High Speed 4-Port USB 2.0 Hub
For industrial computing applications that require embedded USB ports, the HUB4P-OEM is the ideal solution.
Provides four downstream USB 2.0 ports with    full 500mA per port
Supported in Windows, Linux, and other USB
   aware operating systems
Includes +5V internal power cable

Wireless Modbus TCP Interface to 16 Isolated Inputs / 8 Form C Relays
Control and monitor 16 optically isolated inputs and 8 Form C (SPDT) relay outputs over a wireless network with the SeaI/O-420W.
Complies with 802.11b/g (2.4GHz) networking    standards
Expand your distributed I/O network with up to
  246 expansion modules
Removable screw terminals simplify field wiring

USB to 4-Port RS-232 DB9 Serial Interface Adapter
The SeaLINK 2401 USB serial I/O adapter provides an easy method to connect four RS-232 serial devices to a single USB port.
Four DB9M connectors with full modem control   signals implemented
Data rates to 460.8K bps are supported
Powered by USB connection

Low Profile PCI RS-232/422/485/530 Serial Interface
The 7106 Low Profile PCI serial interface provides one serial port configurable for RS-232, RS-422, RS-485, or RS-530.
Utilizes a 16C850 UART with 128-byte Tx/Rx
   FIFOs for maximum data reliability
Supports data rates to 921.6K bps and
  automatically handles RS-485 transmitter     enable/disable
Board is MD1 Low Profile and Universal Bus
  (3.3V and 5V) compatible

Ethernet to 8-Port RS-232/422/485 Serial Server
The SeaLINK 4803 Ethernet serial server is the easiest way to connect RS-232, RS-422, or RS-485 serial devices to your Ethernet network.
Each port individually configurable for RS-232,
  RS-422, or RS-485 with automatic RS-485   enable/disable
Serial ports appear as virtual COM ports to host   machine with each port supporting data rates to   230.4K bps
Ethernet 10/100BaseT (autosense) with   watchdog/reset circuit for fault tolerance

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