Siemens SONOLINE G50 Service Manual page 28

System Architecture
The A44 STRX (Steered CW Receive/Transmit) is included in systems that have
steered CW or CW capability. It supports the full cardiac function and is standard
equipment for the G60 S. This circuit generates CW transmit pulse and process CW
echo signals. Transmit pulses are sent to the A36 PSEL (Probe Select) PCB for SCW
transducers or to the A40-1 CWRX (CW Receive/Transmit) PCB for CW transducers.
The received process signal is sent to the A56-1 DPPR (Doppler) PCB.
The A46 RXBF (Receive Beamformer) is actually two separate PCBs: the RXBFA
PCB and the RXBFB PCB. The G60 S implements 64 channel digital processing
using the RXBFA; the G50 implements 64 channel fold-over processing using the
A40-3 RX32 in place of the RXBFA. The RXBFA is standard equipment for the G60 S
only, while the RXBFB is standard for both the G50 and G60 S. Both PCBs perform
analog-to-digital conversion and receive-zone blending on the received echo signal.
The A46 RXBF-A also has a signal detection circuit which determines channel
sequencing between the two PCBs. Depending upon the imaging mode, the zone
blended signal may be sent to the A51 CMEM (CINE Memory) PCB, the A56-1 DPPR
(Doppler) PCB, and the A48 BWPP (Black/White Parallel Processing) PCB.
The A48 BWPP (Black/White Parallel Processing) is standard equipment for both the
G50 and the G60 S. It receives either a digital beamformed B-mode or M-mode
signal from the A46 RXBF (Receive Beamformer) PCBs, or an unprocessed analog
B/M-mode echo signal from the A31 MXP (Mechanical Sector Processor) PCB. The
signal arriving from the A31 MXP is converted from analog to echo and then
processed the same way as the signals received from the A46 RXBFs. This PCB
provides complete processing of the B/M-mode signal including scan conversion.
This PCB also sends B/M mode data to the A51 CMEM (CINE Memory) PCB.
The A50 SUBC (Sub Controller) is a daughter board of the A66 DTPS (Data Transfer/
Power Supply) PCB. This PCB provides transmit timing control, probe temperature
detection control, and internal bus control (HS-bus & CI-bus) for the E-Module.
The A51 CMEM (CINE Memory) is a daughter board to the A56 CFPR (Color Flow
Processor) PCB. This PCB is used to capture B/M/C/P-mode CINE. Processed color
and power data is received from the A56 CFPR (Color Flow Processor), and B/M
data is received from the A48 BWPP (Black/White Parallel Processing) PCB.
The A56 CFPR (Color Flow Processor) receives digitally processed echo signals
from the A46 RXBF (Receive Beamformer) PCBs. Color or power echo data is
completely processed on this PCB. Processed data is sent to the A51 CMEM (CINE
Memory) PCB, and the A66 DTPS (Data Transfer/Power Supply) PCB. This PCB
also has two daughter boards; the A51 CMEM (CINE Memory), and the A56-1 DPPR
(Doppler).
The A56-1 DPPR (Doppler) is a daughter board to the A56 CFPR (Color Flow
Processor) PCB. This PCB processes all doppler data received from either the A46
RXBF (Receive Beamformer) PCBs, the A44 STRX (Steered CW Receive/Transmit)
PCB, and the A30 ECG Module. This PCB also stores Doppler CINE data. The
processed Doppler echo trace data is sent to the A66 DTPS (Data Transfer/Power
Supply) PCB, and Doppler audio is send to the system monitor.
The A66 DTPS (Data Transfer/Power Supply) PCB receives processed rectangular
echo data from the A48 BWPP (Black/White Parallel Processing) PCB, the A56-1
DPPR (Doppler) PCB and the A56 CFPR (Color Flow Processing) PCB. This PCB
performs frame interpolation for all imaging modes and sends the image data to the
Page 6 of 16 7482255 Rev 01
October 2002
Siemens