GE Voluson i BT06, Service Manual

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GE V
OLUSON
i / V
OLUSON
e
D
IRECTION
KTI106052, R
EVISION
10 S
ERVICE
M
ANUAL
Chapter 5 - Components and Functions (Theory) 5-11
5-2-4-4 D-Mode Autotrace (draws PC-calculated envelope to D-Spectrum)
1.) RBI
- PRF-generator; see: 5-2-4-1 B-Mode
- After DC-cancelling the signal is mixed with RX-Frequency and brought to LF-Spectrum,
where the LowPassFilter cuts HF.
Mixer and Magnitude-Calculator arrange Complex Demodulation.
a.) DMA section
D-mode-Data from RBI is written via SP1 into SDRAM Fifo Buffer memory.
PC calculates Autotrace-Curve from D-Mode data.
Cine Mode with Autotrace: Cine Mode-Memory for the Autotrace-Curve is inside PC-Memory.
Software has to take care that D-Spectrum and Autotrace-Curve are placed exactly one upon
the other, means: have the same Cine-Shift.
2.) RBF
see: 5-2-4-1 B-Mode
5-2-4-5 CFM-Mode (Color Flow Mode)
1.) RBI
- PRF-generator; see: 5-2-4-1 B-Mode
- After DC-cancelling the signal is mixed with RX-Frequency and brought to LF-Spectrum,
where the LowPassFilter cuts HF.
Mixer and Magnitude-Calculator arrange Complex Demodulation.
a.) DMA section
see: 5-2-4-1 B-Mode
2.) RBF
see: 5-2-4-1 B-Mode
3.) Video Section
see: 5-2-4-1 B-Mode
5-2-4-6 3D-Mode (Freezes after 1 volume sweep)
see: 5-2-4-1 B-Mode
5-2-4-7 Real Time 4D-Mode (nonstop volume rendering)
see: 5-2-4-1 B-Mode
5-2-4-8 Sonoview write mode (store Image to Sonoview)
1.) RBI
Not used
a.) DMA section
Not used
2.) RBF
Not used
3.) Video Section
standard PC video logic