Theory of Operation
DPO4000 Series Service Manual 2-3
The processorsystem contains a 440EP Power PC microprocessor that controls
the entire instrument. The processorsystem also contains FLASH R OM, system
RAM, and interfaces to USB ports and a Com pact flash slot.
The power converterreceives +1 2V from the main power supply and generates
voltages forthe analog and digital circuitry on the main board.
Front-Panel Board
The front-panelboard contains a microprocessor that reads the front-panel
buttons and controls, and thensends this information to the processor system on
the main board. The front-panelboard also generates the probe compensation
output signal and providesan interface to the application modules.
Processor System
Power Converter