4535 612 10261 HD11 Service Manual Page 67
CSIP Level 1 Theory of Operation: Functional Description
Operating
System
The full-service, real-time Windows XP Embedded operating system provides an integrated
range of resources: drivers and handlers for storage, video, serial and parallel ports, and support
of file system services and graphical user interfaces. The operating system is resident on the PC
hard disk drive. The system software performs these tasks:
• Processes requests from the control panel
• Sets up beam-forming parameters
• Processes acquired ultrasound echoes into digital visual representations for conversion into
analog signals
• Performs measurements and calculations on acquired data
• Stores acquired data (such as images and user-entered data) for subsequent retrieval
• Performs all necessary functions to coordinate software tasks
E-box Functions
The E-box contains the electronics that perform many of the ultrasound imaging functions in the
system, such as transducer selection, transmit generation, beam forming, demodulation, detec-
tion, and image processing. The E-box supports transmit and receive channels.
Power, Signal, and Data Distribution
• Signal Distribution Board
- Passes transducer control signals to the imaging system
- Receives transducer identification signals from the Signal Processor Board
- Passes transmit and receive signals from the TR boards to the active transducer
• Backplane Board
- E-box backplane connects all data paths between the TR boards, MC, and SPB
- Distribution point for DC power and ground to all boards
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