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Chapter 9 Revision History
Hardware Revision 9.1
Initial product release with C/US UL Listing.
Added display heater option.
Moved board mounting chassis to the upper left of enclosure, from upper center.
Replaced Samsung SRAM with Cypress.
New firmware released for I/O board because of PIC18F die revision.
Released DC power supply option (DC-INT rev 1.0).
Added alternate LTC cross for AD reference and changed capacitors on I/O board.
Released magnetic switches for configuration & weights and measures.
Prox mounting cup changed from inside mount to outside mount.
Changed display to double the brightness and updated interface board (DISP_INT
rev 1.1).
Added TWIC prox reader option.
Changed regulatory agency from UL to CSA.
Ice shield option added to card reader slot.
Updated prox reader card holder to internal plastic slotted assembly.
Released new CPU board (CPU rev 2.0), and Ethernet update on power supply/
com boards (AC-INT rev 1.1, DC-INT rev 1.1).