Theory of Operation
TDS3000C Series S ervice Manual
2-3
The processor system contains a MPC860 Power PC microprocessor that
controls the entire instrument. The processor system also contains FLASH
ROM, system RAM, and interfaces to communication modules and the
front-panel USB Flash Drive port.
The power converter receives 15 VDC (or battery voltage) from the battery board
and generates voltages for the analog and digital circuitry on the main board.
Display Module
The display module consists of a color liquid crystal display (LCD), a display
driver, a pair of fluorescent back light tubes, and a high-voltage back light power
supply.
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.
The front-panel board also generates the probe compensation output signal and
provides an interface to the application modules.
USB Port
The front panel USB Flash Drive port is a host port. This port is only for use
with a USB flash drive.
Processor System
Power Converter
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