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MN2-2008, Rev.2
SECTION 4
Principle of System Operation
4 - 82
Digital Beam Former part
The reception signal (analog) passed from TGC Amp. is converted to digital signal. Then
the signal for each channel is delayed in accordance with the Rx focus data and added into
an ultrasound beam.
&
The delay is processed digitally as a readout from FIFO memory is delayed by
processing clock etc., that makes it possible to have accurate delays continuously.
(Dynamic reception focusing). It also has the functionality that it adjusts the
weighting of each reception signal continuously that makes the Rx beam sharper.
This is digital signal so that it makes possible to do parallel processing by time
sharing operation. Then it is able to improve the frame rate.
Rx Pixel Focusing
%
Rx continuous dynamic focusing
&
&
It implements Rx Beam former (Three PC boards with 32 ch circuitry for M01050
and before, one PC board with 96 ch circuitry for M01051 and after) as the Delay &
Adder.
&
This system does not have the trouble that shows brightness difference in every 1cm
depth caused by one of the Rx focus boards (Delay and Adder circuit), like
SSD-650, 1200, and 2000 etc.
The US beam from Rx Beam Former is processed by VBPF (Filtering the echo data
according to the depth) in Timing Processor, then passed to Beam Processor 1.
Also, the US beam from Rx Beam Former is processed by detector and filtering in Timing
Processor and then passed to Beam Processor 1 for Doppler analysis. The same data is
transferred to Beam Processor 2 as well for color flow calculation.
Tx & Rx part also has the following circuitry:
The generator of control signal for Rx signal, such as Pre STC and STC signal.
Timing/Control signal generator for Tx/Rx unit.
Motor control for VOL mode scanner and Mechanical scanning probe.
Interface of physiological signal.
Control part for Mother driven TEE probes.
Delay-Depth
Depth
D
e
la
y
Ideal delay
Analog Beam former
Digital Beam former
Содержание ProSound Alpha 10
Страница 7: ...MN2 2008 Rev 2 SSD ALPHA10 SERVICE MANUAL 6 6 Blank page...
Страница 8: ...SECTION 1 SECTION 1 How to use this service manual...
Страница 12: ...MN2 2008 SECTION 1 How to use this service manual 1 4 Blank page...
Страница 13: ...SECTION 2 SECTION 2 PRECAUTIONS...
Страница 20: ...SECTION 3 SECTION 3 Before Repairing...
Страница 32: ...MN2 2008 SECTION 3 Before Repairing 3 12 Blank page...
Страница 33: ...SECTION 4 SECTION 4 PRINCIPLE OF SYSTEM OPERATION...
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Страница 118: ...MN2 2008 Rev 2 SECTION 4 Principle of System Operation 4 85 SSD ALPHA10 Ver 2 Ver 3 M00300...
Страница 119: ...MN2 2008 Rev 2 SECTION 4 Principle of System Operation 4 86 SSD ALPHA10 Ver 3 Ver 5 M00301 M01050...
Страница 120: ...MN2 2008 Rev 2 SECTION 4 Principle of System Operation 4 87 SSD ALPHA10 Ver 5 M01051 M01240...
Страница 121: ...MN2 2008 Rev 2 SECTION 4 Principle of System Operation 4 88 SSD ALPHA10 Ver 6 M01241 M01705...
Страница 122: ...MN2 2008 Rev 2 SECTION 4 Principle of System Operation 4 89 SSD ALPHA10 Ver 6 Ver 7 M01706...
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Страница 128: ...MN2 2008 Rev 2 SECTION 4 Principle of System Operation 4 95 SSD ALPHA10 Ver 2 M00200...
Страница 129: ...MN2 2008 Rev 2 SECTION 4 Principle of System Operation 4 96 SSD ALPHA10 Ver 2 Ver 5 M00201 M00950...
Страница 130: ...MN2 2008 Rev 2 SECTION 4 Principle of System Operation 4 97 SSD ALPHA10 Ver 5 Ver 6 M00951 M01590...
Страница 131: ...MN2 2008 Rev 2 SECTION 4 Principle of System Operation 4 98 SSD ALPHA10 Ver 6 M01591...
Страница 138: ...SECTION 6 SECTION 6 TROUBLESHOOTING...
Страница 140: ...MN2 2008 SECTION 6 Troubleshooting 6 2 Blank page...
Страница 141: ...SECTION 7 SECTION 7 ADJUSTMENT PROCEDURE...
Страница 143: ...MN2 2008 SECTION 7 Adjustment Procedure 7 2 Blank page...
Страница 144: ...SECTION 8 SECTION 8 PERFORMANCE CHECK...
Страница 165: ...SECTION 9 SECTION 9 DISASSEMBLING PROCEDURE...
Страница 170: ...MN2 2008 Rev 2 SECTION 9 Disassembling Procedure 9 5 L KEY 84C...
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Страница 301: ...MN2 2008 Rev 1 SECTION 9 Disassembling Procedure 9 124 12 9 Removing of Monitor fuse 2 Remove the fuse Fuse 5266400052...
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Страница 345: ...MN2 2008 Rev 1 SECTION 9 Disassembling Procedure 9 154 4 Remove the physio unit 4 Physiological signal display unit...
Страница 348: ...SECTION 10 SECTION 10 PARTS LIST...
Страница 355: ...MN2 2008 Rev 2 SECTION 10 Parts List 10 7 01 MAIN BODY USI 153 S N 19 20 18 61...
Страница 357: ...MN2 2008 Rev 2 SECTION 10 Parts List 10 9 01 MAIN BODY USI 153 S N 54 53 PCB 29 52...
Страница 363: ...MN2 2008 Rev 2 SECTION 10 Parts List 10 15 02 OPERATION PANEL L KEY 84 S N 8 3 STC PCB CTRL PCB SW PCB 9 8 19...
Страница 364: ...MN2 2008 Rev 2 SECTION 10 Parts List 10 16 02 OPERATION PANEL L KEY 84 S N 21 10 CTRL PCB...
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Страница 372: ...MN2 2008 Rev 2 SECTION 10 Parts List 10 24 03 CABLE HANGER L KI 630V S N 1...
Страница 374: ...MN2 2008 Rev 2 SECTION 10 Parts List 10 26 04 POWER SUPPLY UNIT EU 6030B EU 6030E S N 1 8 7 6 5 4 9 11 2 3 12 13 10...
Страница 375: ...MN2 2008 Rev 2 SECTION 10 Parts List 10 27 04 POWER SUPPLY UNIT EU 6030F S N 1 2 9 11 3 4 10 12 13 6...
Страница 380: ...MN2 2008 Rev 2 SECTION 10 Parts List 10 32 05 JUNCTION BOX JB 273 JB 274 S N 1 5 4 3 6 2...
Страница 388: ...MN2 2008 Rev 2 SECTION 10 Parts List 10 40 06 USM 28 UNIT USM 28 S N M00101 M01100 M01151 M01184 M01275 M01300 22 21...
Страница 392: ...MN2 2008 Rev 2 SECTION 10 Parts List 10 44 07 STORAGE DRIVE UNIT EU 9098 S N M00101 M01530 1 2 3 4 6 5...
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Страница 396: ...MN2 2008 Rev 2 SECTION 10 Parts List 10 48 08 PHYSIOLOGOCAL SIGNAL UNIT PEU ALPHA10 S N 1 2 6 5 4 3...
Страница 398: ...MN2 2008 Rev 2 SECTION 10 Parts List 10 50 09 MONITOR IPC 1710 S N M00101 M01590 2 1 4 3 5...