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Theory of Operation
DPO4000 Series Service M anual
2-3
The processor system contains a 440EP Power PC microprocessor that controls
the entire instrument. The processor system also contains FLASH ROM, system
RAM, and interfaces to USB ports and a Compact flash slot.
The power converter receives +12V from the main power supply and generates
voltages for the analog and digital circuitry on the main board.
Front- Panel Board
The front-panel board contains a microprocessor that reads the front-panel
buttons and controls, and then sends this information to the processor system on
the main board. The front-panel board also generates the probe compensation
output signal and provides an interface to the application modules.
Processor System
Power Converter