GENERAL DESCRIPTION and TYPICAL APPLICATIONS:
The DSC2 is an 8051 based microcontroller (DS80C320) with 2-Wiegand Card Reader control/ interface ports and resources for 4 TTL/CMOS inputs, 2 relay outputs (Form A, 30Vdc @ 1A max.), and 3 additional TTL/CMOS outputs for the readers. In addition the unit can sense several jumper settings, has 7 onboard LED indicators and, a socket for an optional battery backed clock/calendar/RAM. The DSC2 has an addressable (8-bit) RS485 communications port for operation up to 115.2K Baud. An onboard switching regulator allows for 9-35VDC operation of the unit.
|DSC2CP.pdf||DSC2 CPU Schematic|
|DSC2IO.pdf||DSC2 IO Schematic|
|DSC2v2.7aManual.pdf||Manual (Version 2.7A)|
Click on this image of the DSC2 for full-size (178k) photograph:
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R.E. Smith 10330 Chester Rd., Cincinnati, Ohio 45215