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CHAPTER 4: Technical Description
4. Technical Description
The Relay Output Card PCI provides four parallel reed relay output ports. The
ports are organized as 1, 2, 3, and 4.
4.1 Features
• 32 SPST relays
• DB37 connectors
• Highly reliable 10-VA DIP reed relays used
• Multiple cards can reside in the same computer
• PCI 2.1 bus compliant
4.2 Reed Relays
Reed relays provide very-high-quality, long-life, low-power, dry-contact switch
closures. Reed relays are not suited for high-current applications, and they can be
destroyed by capacitive or inductive load switching. The relays are normally open,
and they close when energized.
See Chapter 1 for relay specifications.
4.3 Software
The Relay Output Card PCI comes with a suite of Windows
®
drivers. These drivers
provide a consistent and straightforward applications program interface (API),
allowing the developer to concentrate on the details of the application as opposed
to low-level driver development. Popular development environments, including
Visual C++, Visual Basic, and Delphi, are supported for application development.
Windows 98/Me/XP, Windows NT
®
, and Windows 2000 drivers are included.
For DOS, QNX, Linux
®
, and other operating systems, please refer to the software
included with your card.