infoTECH Feature

August 18, 2008

Sealevel Systems Adds to SeaLINK USB Serial Product Line

Sealevel Systems (News - Alert) has added to the SeaLINK USB serial product line, the SeaLINK.SC and SeaLINK+2.SC. The new adapters offer one or two serial ports that are software configurable for RS-232, RS-422, or RS-485, and thus eliminate the need to open the enclosure to change jumper settings or dipswitches.
Both models maintain their electrical interface settings locally, which enable the host computer to be repaired or upgraded without reconfiguring the serial ports. These adapters can also be configured at one computer and deployed to other computers.
According to company sources, the serial ports on each SeaLINK adapter appear as standard COM ports to the host computer, which enables compatibility with legacy software.
The company informs that all Sealevel SeaLINK USB serial adapters use state-machine architecture. This feature not only reduces the host computer’s overhead when communicating over multiple serial ports simultaneously, but also supports data rates to 921.6K bps at the same time. Users can conveniently know the serial data activity, electrical interface, and power through the Status LEDs located on the front of the enclosure.
Housed in rugged, plastic enclosures, Sealevel Systems’ new adapters are USB bus powered, which eliminates the need of external power supply. The company is also offering DIN rail mounting clips as an option. Both SeaLINK.SC and SeaLINK+2.SC integrate SeaLATCH locking USB ports, which are fully compatible with standard USB cables. The company further explains that the metal thumbscrew provides a secure connection to the device and prevents accidental cable disconnection when used with the included USB cable with a locking type B (News - Alert) connector.
Sealevel Systems’ new adapters ship with the company’s SeaCOM suite of Windows drivers and diagnostic utilities as well as include WinSSD, a full-featured application providing powerful testing and diagnostic capabilities. WinSSD can be used for BERT (Bit Error Rate Testing), throughput monitoring, loopback tests, and transmit test pattern messages, said the company.
Founded in 1986, Sealevel Systems provides industrial computing solutions in addition to a variety of communications and I/O products including PCI Bus cards, Ethernet serial servers, USB serial adapters, PCMCIA cards, and PC/104 modules. Last month, the company announced two additions to their SeaLINK USB to serial product line, the SeaLINK 4.SC and SeaLINK 8.SC, which offer four or eight serial ports that are software configurable for RS-232, RS-422, or RS-485. These adapters eliminate the need to open the enclosure to change jumper settings or dipswitches.
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Anuradha Shukla is a contributing editor for TMCnet. To read more of Anuradha’s article, please visit her columnist page.

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