SediGraph III 5120 Service Card Cage and PCBs
Mar 2010 2-11
Card Cage and PCBs
The card cage is located inside of the cabinetry and is used to hold the cards and backplane
PCBs in a central location. It has all of the interconnections needed to interface to the
instrument and the operating computer.
The following is a listing of the PCBs used in the 5120 and their main purpose.
512/17701/011, Backplane PCB
The Backplane PCB’s main purpose is to provide a connection point for the three PCBs
resident in the card cage and the signals needed for operation of the instrument. The PCB
features the following:
• MICBus interface for 3-card slot cage w/slot ID encoding.
• Board ID EEPROM with instrument ID
• System Configuration ID
• Enable jumper for I
2
C Write protect signal
• i386 CPU board interface w/1600 pin DIN connector
• I/O & Control Interface w/96 pin DIN connector
• Cell Stepper PCB interface w/96 pin DIN connector
• Interface connectors for remote Fluid Control PCB
• Connector for front panel LED
• Surface mount design, except for thru-hole connectors
Top Cover Removed - Showing Card Cage
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