June 2008 - Issue 6 Vol. 7
 


Question:
The Rolling Stones’ name was inspired by a song from what band?



Click here if button does not work

First 10 correct responses
win Sealevel stuff.

LAST MONTH"S TRIVIA
Question:
In the 70’s, a singer – just into their own early days of fame – climbed over the fence at Graceland in hopes of meeting Elvis. Elvis wasn’t home and security politely escorted this singer off the grounds. Who was the singer?

Answer:
Bruce Springsteen

 

 

 

Industrial USB to RS-232/422/485 Serial Interface Adapters
The SeaLINK 2433 and 2833 USB serial adapters provide four or eight serial ports via USB and are ideal for rugged, industrial environments.
• Each port software configurable for RS-232,
  RS-422, or RS-485
• Electrical interface settings maintained across
  multiple computers
• Includes two USB 1.1 hub ports on front of
  enclosure
• 5VDC @ 500mA on pin 9 of each DB9
  connector
Read about the 2433 and 2833 USB serial adapters



Desktop USB to RS-232/422/485 Serial Interface Adapters

The SeaLINK 2423 and 2823 USB to serial interface adapters offer an easy way to connect four or eight serial devices to a single USB port.
• Each port software configurable for RS-232, RS-422, or RS-485
• USB bus powered
• Data rates to 921.6K bps
• Status LEDs indicate electrical interface and serial data activity for each port
Read about the 2423 and 2823 USB serial adapters

 


Tech Lowdown

There is a significant difference in performance between the "Sealevel architecture" and "industry average architecture" for USB serial adapters. Performance testing of 8-port USB serial adapters proved that the architecture determines the maximum baud rate and more importantly, the throughput of connected serial devices. The findings concluded:

• Architecture design significantly impacts performance of multi-port
  USB serial adapters.
• Sealevel's "dedicated USB UART" design is equivalent to
  connecting multiple single-port USB serial adapters to the host.
• Sealevel's USB serial architecture allows each port to run at its
  specified maximum data rate.

Download the PDF Test Report: Impact of Architecture on Performance of USB and Serial Adapters to learn more.



15” LCD TFT Flat Panel Computer
The SeaPAC S1200-15RX combines the Relio R1200 embedded computer with a 15” resistive touchscreen monitor perfect for a variety of control and HMI applications.
• Embedded 1.0GHz ULV Intel Celeron CPU
• Solid-state operation via CompactFlash memory
• Stainless steel displayed rated for NEMA 4X
  environments

Low Profile PCI RS-232/422/485 Isolated Serial Interface
The 7108 Low Profile PCI serial interface provides one RS-232/422/485 serial port capable of data rates to 921.6K bps.
• Optical isolation provides protection
  against transients and ground loops
• 16C850 buffered UART with 128-byte FIFOs
• MD1 Low Profile and Universal Bus (3.3V and 5V)   compatible

USB to 4 Isolated Inputs / 4 Form C Relay Outputs
The SeaDAC Lite 8112 can control and monitor up to four optically isolated inputs and four Form C relay outputs via any USB connection.
• Removable 3.5mm screw terminal blocks
  simplify field wiring
• Status LEDs display I/O activity and USB
  connection
• Powered by USB connection


I/O Expandable 1U Rackmount Computer
The Relio R4000 computer offers unmatched I/O expansion capabilities and processor options in a 1U rackmount enclosure.
• Versatile serial, digital, and analog I/O expansion
• Reliable, solid-state operation with no fans or
  other moving parts
• Perfect for embedded applications running from
  CompactFlash

USB to Isolated RS-232 DB25 Serial Interface Adapter
The 2103 provides a single RS-232 serial port to any computer with an available USB port.
• Optical Isolation provides protection against
  transients and ground loops
• Data rates to 460.8K bps
• USB bus powered

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