September 2002 . Volume 1 . Issue 8
 
Welcome to Sealevel Systems' monthly newsletter. The goal is to help our valued customers easily receive timely updates on the latest Sealevel developments. We appreciate your business and continue striving to be the best communications and I/O solutions provider in the market.

In This Issue:

Coming to a Backplane Near You: Low Profile PCI and Universal Bus

Low Profile PCI
Many of today's new computers from the industry leaders, like the Dell Dimension 4500S pictured here, are designed to provide maximum performance in minimum space. To achieve that, more and more systems have adopted the PCISIG Low Profile Specification as the form factor for I/O expansion. There are two card lengths for low profile PCI: MD1 and MD2. MD1 is the smallest of the two, with cards defined to be a maximum of 4.721" (L) x 2.536" (H), and therefore will work in any PCI bus expansion slot if equipped with the correct connector bracket (Sealevel supplies both brackets with all low profile cards).

Universal Bus
The PCI specification defines two types of connectors that may be implemented at the system board level: One for systems that implement 5 Volt signaling levels, and one for systems that implement 3.3 Volt signaling levels.

Three types of add-in boards may be implemented: "5 Volt add-in boards" include a key notch in pin positions 50 and 51 to allow them to be plugged only into 5 Volt system connectors. "3.3 Volt add-in boards" include a key notch in pin positions 12 and 13 to allow them to be plugged only into 3.3 Volt system connectors. "Universal add-in boards" include both key notches to allow them to be plugged into either 5V or 3.3V system connectors. Universal boards must be able to adapt to operation at either signaling level.

Low Profile PCI Serial Adapters

Sealevel announces our new family of Low Profile PCI serial cards designed to comply with the MD1 Low Profile specification and offering Universal Bus (3.3V and 5V) compatibility. Many of today's new computer systems are utilizing the MD1 form factor, the smallest PCI format defined by the PCISIG, for expansion cards. Sealevel's Low Profile Family is a perfect fit for these new devices and offers backward compatibility with older systems since each board ships with both a low profile and a standard PCI connector bracket. Don't take a chance on your I/O card not fitting -- Go Low Profile.

SeaLINK I/O Family Offers OPC Compatibility

Sealevel Systems, Inc., a member of the OPC Foundation, announces a new OPC Server platform: The SeaLINK-I/O family. SeaLINK-I/O products connect to any USB signal to provide interface to a variety of digital signals. Based upon Microsoft's OLE/COM technology, the OPC standard makes possible interoperability between automation and control applications, field systems I/O devices and business/office applications. With minimal configuration required, SeaLINK-I/O can interface easily to any OPC-enabled client including HMI, SCADA, Control and custom applications.

The user can choose from 6 different SeaLINK-I/O modules offering a selection of digital I/O, optically isolated inputs, and Form C relay outputs, affording easy connection to solid state relay racks, switches, sensors and other common devices. Call today for more information.

Sealevel Application Notebook

PCMCIA Serial Card Connects Pocket PC to the Real World

Recently, a Sealevel client working for one of the world's largest communications suppliers thought of a unique solution for remote testing of their switching equipment. Instead of lugging a laptop to perform diagnostic testing, a Pocket PC device equipped with the test software would be carried by the technician. The customer selected the Compaq iPAQ as the best tool for the job. However, a problem arose immediately: The test process is performed over multiple serial links and the iPAQ has only one native serial port. To solve the problem the user purchased a Sealevel PC-SIO PCMCIA to Serial card for each iPAQ. The PC-SIO installed quickly in the available PCMCIA slot and used the standard Windows CE communication driver to enable the RS-232 communication to the remote equipment.

Sealevel manufactures one and two-port PCMCIA to RS-232 cards and also provides a solution for RS-422/485 communication. If you require a communication solution for your Pocket PC or other Windows CE device, Sealevel can help.

This Month's Featured Third Party Software is:

Agilent test and measurement software, including VEE Lab, is designed for the engineer who needs to connect test equipment to a PC. Leveraging the power of Microsoft® Visual Studio.NET, Agilent's connectivity products make connecting instruments and creating test programs in a non-proprietary environment much easier for you. Combined with Sealevel's serial I/O products, this is a great way to accommodate your test and measurement requirements.

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