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July 12, 2005 4:00PM

From Microcomputer Systems, Inc.

MSI announces an 8-channel, 32-bit Quadrature Decoder/Counter Card

Contact Name: John Hilburn
Contact Email: staff@microcomputersystems.com
WebSite: http://www.microcomputersystems.com/msi_1051.htm

MSI-P402 PC/104 32-Bit Quadrature Decoder/Counter Card 
The MSI-P402 is a 32-bit quadrature decoder/counter card designed for monitoring quadrature encoder inputs used in determining motor shaft positions and rotations in machine control and robotic applications. The card can be supplied with 2, 4, 6 or 8 channels. Each channel provides a 32-bit binary up/down counter with selectable 1X, 2X or 4X decoding and latched count outputs using Agilent HCTL-2032 decoders. For each input channel, connector J1 provides  
quadrature inputs with 10K pull-ups and surge suppressors for operation in harsh environments as well as +5V and ground for powering of user's encoders. Interrupt selection for IRQ3 thru IRQ9 are jumper selectable for managing counter roll-overs, if required. The unit is an 8-bit stackthrough PC/104 with I/O mapped 16-bit addressing for which the card base address is jumper selectable. A count reset to zero is provided for each individual channel. Operates from -40C to +85C. Requires +5V only at 2 mA.