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September 2009 - Issue 9 Vol. 8
     
    
Test your knowledge with Tom’s monthly trivia question.

 Question:
When the audience was yelling
for more, what band member
suggested "Old Love" to Eric
Clapton while filming and
recording the famous "Unplugged"
videos for MTV?


Click here if button does not work

LAST MONTH'S TRIVIA
 Question:
What Sealevel Relio industrial computer boasts a fanless Intel
Core 2 Duo processor?

Answer:
Relio R5000
 


   Register for ISA Expo 2009

Chuck Leavell is Sealevel’s Newest Celebrity Spokesperson

Chuck Leavell is Sealevel’s Newest Celebrity Spokesperson Chuck Leavell, Rolling Stones keyboardist, environmental activist, and celebrity spokesperson for Sealevel, was in town to record voice-overs and videos that will be featured throughout Sealevel’s environmental awareness campaign. As owner of a family-owned tree farm and director of environmental affairs for the Mother Nature Network (MNN), Leavell is committed to the environment and helping others improve their communities. Read more here.

More Performance Power with Updated Firmware

More Performance Power with Updated FirmwareSealevel’s industry-leading Ethernet serial servers now pack even more performance with recently updated firmware. The product is optimized to closely mimic the performance of native serial ports. A new customer, who makes communication equipment for the public safety sector, recently switched from a competing product to Sealevel’s improved Ethernet serial server and proclaimed it “a homerun!” New product enhancements include:

Quick installation
Easy configuration through interactive web- and PC-based utilities
Easy to locate on your network
9-bit protocol
Closely mimics native serial ports.

Sealevel customers can click here to quickly upgrade their existing SeaLINK Ethernet serial servers.

Tech Lowdown
What is 9-bit data framing?

9-bit Data Framing Article9-bit data framing is a simple, yet effective, method of allowing many embedded devices on a multidrop network to maximize processing time. This data transfer method is designed to improve the performance of the embedded devices in these networks.

When using typical 5-8 bit data framing, a communication layer protocol must be used to identify the target of the message.  In order for the target to ensure it gets the message, it must constantly check incoming data to see if it is a message intended for the device.  This continuous data checking reduces the amount of processing time available to the embedded device. 9-bit data framing uses the parity bit (see Figure 1) to identify address messages and respond to only those intended for that device.

Read the rest of the 9-bit data framing article and find out how embedded multidrop devices can use 9-bit data framing to significantly reduce wasted time checking network messages. 

 
 

Ethernet to Isolated RS-232, RS-422, RS-485 Serial Server Ethernet Asynchronous Serial Server
Connect a single RS-232, RS-422, or RS-485 serial port to your Ethernet network with the 4103.
Serial ports appear as virtual COM ports to the host machine
Serial port is optically isolated
Includes Reed relay output and optically isolated input
ARM9 Embedded RISC Computer R9 ARM9 Embedded RISC Computers
 The Relio R9 is an application-ready platform for your next product design.
Based on the 200MIPS Atmel AT91SAM9263™ microcontroller boasting a 32-bit ARM® instruction set
Up to 256MB RAM and 256MB Flash memory
Ethernet to RS-232, RS-422, RS-485 Serial Server 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
Relio R5000 Fanless Core™2 Duo Solid-State Computers Fanless Core™2 Duo Solid-State Computers
 The Relio R5000 dual-core industrial computer is designed for CPU-intensive applications in industrial environments.
Fanless 2.16GHz Intel Core 2 Duo processor
One PCI Express and one PCI expansion slot
Six USB 2.0 ports, dual Gigabit Ethernet, and four serial ports
Ethernet to RS-232, RS-422, RS-485 Serial Server Ethernet to RS-232, RS-422, RS-485 Serial Server
 Easily communicate with up to 16 serial devices over an Ethernet network with the 4163 Ethernet serial server.
Each port configurable for RS-232, RS-422, RS-485 via convenient webpage configuration
Serial ports appear as virtual COM port to host system
Built-in watchdog/reset circuit for fault tolerance
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Visit sealevel.com for synchronous or asynchronous serial, analog or digital I/O, industrial computers or touchscreen HMI systems.