4535 612 10261 HD11 Service Manual Page 70
CSIP Level 1 Theory of Operation: Functional Description
- Performs Image processing
- Provides the interface between the PC and the TR boards
- Receives control data sets from PC, processes register values, sends to TR boards
- Houses the transesophageal echocardiography control and temperature monitoring
- Houses the transducer ID circuitry
- Detects the presence of stand-alone transducers
- Houses electronic switching that allows selection of a single active transducer
- Controls high-voltage output from the system power supply
- Provides digital filters and mixers for demodulating 2D, color flow, and PW RF data
- Houses independent transducer CW Doppler electronics and steerable CW detector
- Generates the120-MHz system clock
- Houses the circuitry that generates TGC signals
PC Functions
The PC contains the electronics, firmware, and software that comprise a central processing unit,
performing further processing of the image data, including the generation of the image display to
the screen. The PC also serves as the main controller of the E-box and the system user inter-
face, as well as the organizer of all of the image management functionality. See “System PC Spec-
ifications” on page 44 for a summary of the PC technical specifications.
PC Motherboard
The motherboard and its major elements (the processor chipset, the BIOS, and the cache) con-
trol the computer functions of the system. The motherboard is the physical and electronic inter-
face of the computer (see Figure 4-1).
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