4535 612 10261 HD11 Service Manual Page 69
CSIP Level 1 Theory of Operation: Functional Description
- TGC amplification
-A/D conversion
- Summation of echo (receive) data
- Transmit and receive beam forming
- Received signal is pre-amplified, TGC amplified, low-pass filtered, and digitized except for
CW
• 3D Motor Controller Board—HD11 supports live 3D imaging with mechanical “wobbler”
linear array transducers. The 3D transducers are steered by this motor control board
manufactured by Galil Motion Control.
- Steers 3D transducers
- Receives TEE motor control and temperature-sense signals from the Signal Processor
Board
- Provides CW steering
• Signal Processor Board—The Signal Processor Board uses a very large Field Programmable
Gate Array (FPGA). Surrounding the MOAC FPGA are the beam processor (BP), which is
used for control of the beam forming and demodulation functions, and the acoustic
processor (AP), which is used for control of the scan conversion, color/Doppler processing,
and image processing. The acoustic processor has more increased speed and memory access
than previous systems.
- Performs acoustic processing
- Controls beam forming and demodulation
- Performs scan conversion
- Processes color Doppler
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