April 2008 - Issue 4 Vol. 7
 


What product was Intel actually developing when it created the 4004 microprocessor?


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First 10 correct responses
win Sealevel stuff.

LAST MONTH"S TRIVIA
Question:
The first music video played on MTV was “Video Killed the Radio Star” by the Buggles. What was the second video played on MTV?

Answer:
The second video played on MTV was “You Better Run” by Pat Benatar.

 

Many RS-485 Users Are Unaware That They Are Placing
Data At Risk

The RS-485 communications standard introduced by EIA in 1983 does not stipulate a specific method for controlling the driver, and several alternatives have evolved. Some methods have significant risk of data contention and corruption.

To assist users in selecting the ideal method, Sealevel Systems has published a white paper: Eliminate the Risk of RS-485 Data Corruption. Learn which method is most effective for minimizing the risk of communication errors.
Read More…


Isolated 4 Port PC/104 Serial Adapter
The 3547 PC/104 serial interface provides four serial ports with 1,500VDC port-to-port isolation that protect the host system from ground loops and voltage transients that are common in remote installations and industrial environments.
• PC/104 serial I/O adapter with four
  RS-422/485 ports
• Each port software configurable for 4-wire
   RS-422/485 or 2-wire RS-485
• Includes 16954 UART with 128-byte FIFOs
  and 9-bit support
• Supports data rates to 921.6K bps
  Read More…



Tech Lowdown

The Windows® XP Embedded (XPe) operating system offers a configurable set of over 10,000 individual components. Developers can customize their image by including only the components required for their application. Windows XP Embedded is based on Windows XP Professional and a bootable kernel can scale to as low as 8MB in size.

When used with a Sealevel Relio industrial computer, an XPe image can be created that will run from a 1 GB CompactFlash memory card instead of a hard drive. Additionally, Relio computers are fanless which allow complete solid-state operation resulting in the ultimate reliability.

Developers typically use the following process when configuring XPe:

• Develop application using standard Windows XP Pro operating
  system
• Use Windows Embedded Studio tools to "componentize" the OS
• Deploy the target image onto CompactFlash memory
• In production, Sealevel can duplicate the CompactFlash or load the
  image via Ethernet network

XPe is ideal because it allows developers to use the familiar XP operating system and toolsets while still providing complete configuration flexibility. Substantial customization options allow virtually unlimited operating system environments including traditional or headless operation. Essentially every component of the target XPe image can be configured to perfectly match the application requirements.

Call our sales engineers at (864) 843-4343 to discuss how Relio industrial computers and XP Embedded can provide the highest reliability for your application.


Relio Remote Monitoring and Control Solutions
The Relio RMS-1000 is the ideal solution for monitoring, communications, and infrastructure management.
• Turnkey solution available with ScriptEasy™
  software
• No programming skills required with easy-to-use   graphical interface
• Monitor and Control Over 150 Digital and Analog
  I/O points via IP

USB to RS-232 DB9 Serial Interface Adapter
The 2201 provides two RS-232 serial ports for USB connectivity to legacy or non-USB compliant devices.
• High speed UART with 128-byte Tx FIFO and
 384-byte Rx FIFO
• All modem control signals implemented
• Supports data rates to 460.8K bps

USB to 32 Optically Isolated Inputs Digital Interface Adapter
Control and monitor 32 optically isolated inputs via any USB connection with the SeaDAC 8223.
• Optical isolation provides protection against
  surges and ground loops
• Removable 3.5mm screw terminal blocks
  simplify field wiring
• High-retention USB Type B connector prevents
  accidental disconnection of USB cable

Low Profile PCI RS-232 Serial Interface
The 7104 Low Profile PCI serial interface provides one RS-232 serial port capable of data rates to 460.8K bps.
• 16C850 buffered UART with 128-byte FIFOs
• Data rates to 460.8K bps
• MD1 Low Profile and Universal Bus (3.3V and 5V)   compatible

Ethernet to RS-232 Serial Server
Easily communicate with up to 16 serial devices over an Ethernet network with the 4161 Ethernet serial server.
• Appears as virtual COM port to host system
• Supports data rates to 230.4K bps
• Watchdog/reset circuit for fault tolerance

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