GE Vivid 7 Service Manual
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GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL Chapter 5 - Components and Functions (Theory) 5 - 25 5-3-12-3 Input Signals 5-3-12-4 Output Signals 5-3-12-5 Fuses, Jumpers, Dip-switches and LEDs None Table 5-14 Input Signals INPUTDESCRIPTIONCONNECTION FROM XD1 - XD128 Back scattered echo signals (Receive Mode) and Transmitter pulses (Transmit Mode) Active Probe via Relay board in Receive Mode TX128 in Transmit Mode. Table 5-15 Output Signals OUTPUTDESCRIPTIONCONNECTION TO XD1 - XD128 Transmitter pulses (Transmit Mode) and Back scattered echo signals (Receive Mode) Active Probe via Relay board in Transmit Mode RX-128 in Receive Mode.
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL 5 - 26 Section 5-3 - a Front-End Processor (FEP) 5-3-13 Relay Board (RLY) 5-3-13-1 General Description The Relay Board hosts the connectors for the probes. • On systems without 4D (RT3D), the Relay Board has three PA probe connectors plus a “blind” PA slot used to park a fourth probe. • On systems with 4D (RT3D), the Relay Board has four probe connectors. The three leftmost connectors are used for PA probes, the fourth connector is used for the 4D probe. The Doppler (Pedof) connector, on the front of the Vivid 7, is connected to the Relay board via an internal cable. • In receiving mode, the Relay Board connects the transducer channels from the selected probe to the RX and TX boards via the XDBUS. • The Relay Board routes the TX power supplies to the active probe. • It also routes the Probe Multiplexer Control Signal to the active probe. • FEP2 ONLY: The connectors for the XDBUS connection, are color coded to match the colors on the connectors on the XD BUS Board, to reduce th e risk of using the wrong type of XD Bus boards. Figure 5-19 Probe Connectors A: System without 4D Imaging option 1. Standard probe ports 2. Park probe port B: System with 4D Imaging option 1. Standard probe ports 2. Probe port for 4D Imaging option “PEDOF” DOPPLER PROBE CONNECTOR
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL Chapter 5 - Components and Functions (Theory) 5 - 27 5-3-13-2 Location in the Unit Figure 5-20 RLY Board: Location in Unit RLY Board FRONT OF SCANNER
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL 5 - 28 Section 5-3 - a Front-End Processor (FEP) 5-3-13 Relay Board (RLY) (cont’d) 5-3-13-3 DC Voltages 5-3-13-4 Input Signals 5-3-13-5 Control Signals 5-3-13-6 Output Signals 5-3-13-7 Fuses, Jumpers, Dip-switches and LEDs None Table 5-16 DC Output Voltages, Plug P3 & P4 INPUTDESCRIPTIONCONNECTED FROM + 5 Va DC output voltage, distributed via Motherboard (Backplane). The “a” indicates that this vo ltage is used for analog circuits DC Power Supply > Backplane - 5 Va DC output voltage, distributed via Motherboard (Backplane). The “a” indicates that this voltage is used for analog circuits. DC Power Supply > Backplane GND Distributed via Motherboard (Ba ckplane) DC Power Supply > Backplane Table 5-17 Input Signals INPUTDESCRIPTIONCONNECTION FROM EL1-128Received signals (echoes) and Transmitted pulses (1 of 3 probe connectors) The active probe Table 5-18 Control Signals INPUTDESCRIPTIONCONNECTION FROM Front-End Data Bus Digital data bus used for control of the boards in the Front- End RLY > Backplane > FEC Probe MUX Control Probe Configuration RLY > Backplane > FEC Table 5-19 Output Signals OUTPUTDESCRIPTIONCONNECTION TO XD1 - 128 128 signals to TX-128 and RX-128 XD Bus Boards CW or PW TX CW or PW Doppler tr ansmitter pulses Stand Alone Doppler probe CW or PW RX CW or PW Doppler RX signals (echoes) Stand Alone Doppler probe
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL Chapter 5 - Components and Functions (Theory) 5 - 29 5-3-14 Receiver Board, RX-128 5-3-14-1 General Description 5-3-14-2 Signals From Active Probe • The RX-128 Board has 128 identical receive channels (XD1-XD128). • The signal in each channel is fed via a Tran smit/Receive (T/R) switch to a preamplifier. • From the preamplifier the signal goes to a Time Controlled Gain (TGC) amplifier used to equalize the signal strength from the near fi eld, the mid field and the far field. • The output channels (RX1 - RX128) are then out put via the backplane to the Beamformer boards. Figure 5-21 RX128 Block Diagram DemodulatorMuxAnalog Beamformer T/R T/R Relay Prog LP Filter Pedof (CW mode) (PW mode) I Q 12 Bit ADC MLA0 MLA1 Rx[1:128] Preamp + - Buffer & Level Test Signals TGC Ctrl XD[1:128] Enable
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL 5 - 30 Section 5-3 - a Front-End Processor (FEP) 5-3-14-3 Signals from Pedof Probe The Pedof signals are connected via two dedicated channels on the XD bus PW Mode • The Pedof signals (two channels) are fed via a Transmit/Receive (T/R) switch and relays to three preamplifiers for each Pedof channel. • From the preamplifiers the signal go to Analog Beamformers. • From the Analog Beamformers the signals are fed via a multiplexer for demodulating. • The demodulated (I and Q) signals are then conv erted from analog to digital in 12 bit A/D converters. • The output from the A/D converters (MLA0 and ML A1) are then output to the Beamformer boards. CW Mode • In CW mode, the CW signal is amplified by a de dicated preamplifier (not shown in block diagram) before multiplexing and demodulating. • The demodulated (I and Q) signals are then conv erted from analog to digital in 12 bit A/D converters. • The output from the A/D converters (MLA0 and ML A1) are then output to the Beamformer boards. 5-3-14-4 Location in the Unit NOTICEPlease be careful about the positions when replacing the TX card and RX card. The position of the two cards are interchanged between FEP1 and FEP2. Figure 5-22 RX128 Board: Location in Unit RX128 Board FRONT OF SCANNER Front-End Rack Version 1 Front-End Rack Version 2 RX128 Board FRONT OF SCANNER
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL Chapter 5 - Components and Functions (Theory) 5 - 31 5-3-14 Receiver Board, RX-128 (cont’d) 5-3-14-5 DC Voltages 5-3-14-6 Input Signals 5-3-14-7 Output Signals 5-3-14-8 Fuses None 5-3-14-9 Jumpers and Dip-switches None Table 5-20 DC Input Voltages, Plug P3 & P4 INPUTDESCRIPTIONCONNECTED TO + 5 Va DC output voltage, distributed via Motherboard (Backplane). The “a” indicates that this vo ltage is used for analog circuits DC Power Supply via Backplane - 5 Va DC output voltage, distributed via Motherboard (Backplane). The “a” indicates that this voltage is used for analog circuits. DC Power Supply via Backplane +15 V DC output voltage, distributed via Mother board (Backplane) DC Power Supply via Backplane - 15 VDC output voltages, distributed via Motherboard (Backplane)DC Power Supply via Backplane GNDDistributed via Motherboard (Backplane)DC Power Supply via Backplane Table 5-21 Input Signals INPUTDESCRIPTIONCONNECTION FROM XD1 - XD128 Signals containing the rece ived back-scattered echoes from the active probe. Active Probe > Relay Board > XD Bus Boards > RX128 board PEDOF Signals containing the rece ived back-scattered echoes from PEDOF probe Pedof probe > Relay Board > XD Bus Boards > RX128 board ATGCVP/ATGCVN TGC Control Voltages FEC Board/RFI Board > FE Bus > RX128 board Te s t S I GAnalog test signalFEC Board/RFI Board > FE Bus > RX128 board Table 5-22 Output Signals OUTPUTDESCRIPTIONCONNECTION TO RX1 - RX128 128 RX signals (echoes) B eam Former Boards via Backplane
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL 5 - 32 Section 5-3 - a Front-End Processor (FEP) 5-3-14 Receiver Board, RX-128 (cont’d) 5-3-14-10 LEDs Figure 5-23 RX-128: LEDs (on the Solder Side of the Board) Table 5-23 RX-128: LEDs (on the Solder Side of the Board) LED #LED COLORDESCRIPTIONNORMAL STATE LD1 - Red Board Failure Normally OFF LD2 - Green Board OK Normally ON LD3 - Yellow Spare Normally OFF LD4 - YellowSpa reNormally OFF LD4 LD3 LD2 LD1
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL Chapter 5 - Components and Functions (Theory) 5 - 33 5-3-15 Beam Former Board(s), BF-64 5-3-15-1 General Description, BF-64 boards The BF64 board converts the analog RF-input signal from 64 receiver channels into digital form and performs receiver focusing and steering by digital delay. All digital signal processing to filter and delay ea ch channel is performed in an Application Specific Integrated Circuit (ASIC) named FOC32. The output of this board is either connected to a new BF64 board (to increase the number of channels) or to the RFT or RFI board for digital RF processing. 5-3-15-2 Location in Units Figure 5-24 BF-64 Boards, Location in Units (FEP 1 shown in illustration) BF-64 BoardsFront of Scanner
GE HEALTHCARE DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL 5 - 34 Section 5-3 - a Front-End Processor (FEP) 5-3-15 Beam Former Board(s), BF-64 (cont’d) 5-3-15-3 DC Voltages 5-3-15-4 Input Signals 5-3-15-5 Output Signals 5-3-15-6 Fuses None. Table 5-24 DC Input Voltages INPUTDESCRIPTIONCONNECTED TO + 3.3 V DC voltage, distributed via Mother board (Backplane) DC Power Supply via Backplane + 5 Vd DC output voltage, distributed via Motherboard (Backplane). The “d” indicates that this volt age is used for digital circuits.DC Power Supply via Backplane - 5 Va DC output voltage, distributed via Motherboard (Backplane). The “a” indicates that this voltage is used for analog circuits. DC Power Supply via Backplane GNDDistributed via Motherboard (Backplane)DC Power Supply via Backplane Table 5-25 Input Signals INPUTDESCRIPTIONCONNECTION FROM RX1 - RX128 Receiver signals RX-128 board FE Bus Front-End Bus FEC Board MLA0 to MLA1 BF64 #1 ONLY: Digital data from analog CW beamformer on RX128 board BF64 #1 ONLY RX128 MLA0 to MLA1 or MLA0 to MLA3This input is used on BF64 #2: The output signal from previous board.BF64 Board #1 Table 5-26 Output Signals OUTPUTDESCRIPTIONCONNECTION TO MLA0 to MLA1 or MLA0 to MLA3 This is the digital output from the board. From BF64 #1: To BF64 #2. From BF64 #2: To RFT.