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4535 612 34161 HD3 Service Manual Page 64
CSIP Level 1 Theory of Operation: Functional Description
- Generates the 2D image, spectral Doppler spectrum and audio, Color and Power Dop-
pler image, and transmits these signals to the DSC part of the board and the I/O panel
• DSC and RTC functions:
When the DSC circuits receive ultrasound digital data from the DSP circuits, they perform
2D scan conversion and then transmit the video signals to the video management circuits.
• Video management functions:
- From DSC output to Main Monitor
- Image Save (save image at HDD by PC)
- Color Keying (VGA data + image data)
- Post Mapping (control image curve)
- Dual Mode
- Edge Enhancement
PCC Board
The PCC Board is similar to the motherboard used in a personal computer. The PCC acts as a
central processing unit, performing further processing of the image data, including the generation
of the image display to the screen. The PCC also serves as the main controller of the other
boards and as the organizer of all of the image management functionality.
The PCC determines system functionality and coordinates the overall communication between
the user and the system, which includes storing and saving images. The PCC communicates con-
tinually with the hard drive for operating parameters and hosts the following functions:
• USB
• Battery
• VGA