Theory of Operation
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
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 CompactFlash port.
The Power Converter re12 V 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
Summary of Contents for 4000 Series
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