January 5, 2009 3:00PM

From MICROCOMPUTER SYSTEMS, INC.

MSI-P406 PC/104 32-Bit Quadrature Decoder/Counter Card with Differential Inputs

Contact Name: John Hilburn
Contact Email: staff@microcomputersystems.com
WebSite: http://www.microcomputersystems.com/msi_1070.htm

The MSI-P406 is a 32-bit quadrature decoder/counter card, with differential encoder and index inputs that are RS-422 compliant, is 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 or 4 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. Four connectors (J1-J4) provide differential quadrature inputs for operation in harsh environments as well as +5V and ground for powering of user's encoders. A shield ground is also provided for each input cable that is capacitively coupled to the PC/104 Bus ground. Each index channnel can be indivdually disabled. Interrupt selection for IRQ3 thru IRQ7 and IRQ9 are jumper selectable for managing counter roll-overs, if required. The unit is an 16-bit stackthrough PC/104 with I/O mapped 16-bit addressing for which the card base address is jumper selectable. A counter reset to zero is provided for each individual channel.  
 
Operates from -40°C to +85°C. Requires +5V only. 
 
MICROCOMPUTER SYSTEMS, INC. 
Baton Rouge, LA 
http://www.microcomputersystems.com/msi_1070.htm