4535 611 98931 iE33 Service Manual Page 70
CSIP Level 1 Theory of Operation: Signal Flow
Signal Flow
Ultrasound data (RF) is acquired from each transducer element and beam-formed (summed) into
a coherent data stream. This RF data stream is moved over the RF bus between the Front-End
Controller (FEC) and the Host resident Dual Signal Conditioning (DSC) PCB.
The DSC processes the RF data to estimate space data, commonly referred to as R-Theta data.
This estimate data (2D, Doppler, and so on.) is sent to the SIP Motherboard to be further pro-
cessed into each final display data type supported by the system (2D, 3D, Live 3D, Doppler,
Audio, M-mode, and so on). The SIP Motherboard stores these data types locally in the SIP hard
drive sub-system (Cineloop images).
From Cineloop images, this data is time-aligned by a streaming data manager application and pro-
vided to Frame Composition processing for composite image display and real-time annotation.
Frame Composition uses the Host AGP card to compose each image element into a composite
display containing image, text and graphical elements.
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