GE Vivid 7 Service Manual

							
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DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
Chapter 5 - Components and Functions (Theory) 5 - 15
5-3-10-2 Location in the Unit
5-3-10-3 Input DC Voltages
 
NOTICEPlease be careful about the positions when replacing  the TX card and the RX card. The position of the 
two cards are interchanged between FEP1 and FEP2.
Figure 5-11   TX128-5 Board: Location in Unit
Table 5-4    Input, DC Voltages
INPUTDESCRIPTIONCONNECTOR-PIN#CONNECTION FROM
+6 Va DC voltage, distributed via Motherboard (Backplane). 
The “a” indicates that this vo ltage is used for analog circuits. J7-A22,B22,C22,D22,E22
DC Power Supply > 
Backplane 
+15 Va DC voltage, distributed via Motherboard (Backplane).  J6-C20,D20,E20
J7-A18,A19,A20 DC Power Supply > 
Backplane 
-5 Va DC voltage, distributed via Motherboard (Backplane).  J6-C3,D3,E3 DC Power Supply > 
Backplane
-15 VDC voltage, distributed via Motherboard (Backplane). J6-C1,D1,E1DC Power Supply > 
Backplane
GNDGround is distributed via Motherboard (Backplane).DC Power Supply > Backplane 
HV1
TX Voltage 1 
Voltage can be programmed to vary from +/- 2.5 V to +/- 95V Used to drive the transmitters in 2D Mode and M ModeHV1N: J6-A15HV1P: J6-A24TX Power Supply >  Backplane
HV2 TX voltage 2
Voltage can be programmed to vary from +/- 2,5 V to +/- 95V Used to drive the transmitters in Doppler (CW/PW) mode  and in Color Flow Mapping (CFM) mode HV2N: J6-A18
HV2P: J6-A21 TX Power Supply > 
Backplane
FEP2 with two TX boards
FRONT OF 
SCANNER
TX128 
BOARDS (2X) 
						

							
GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
5 - 16 Section 5-3 - a  Front-End Processor (FEP)
5-3-10-4 Control Signals
5-3-10-5 Outputs
5-3-10-6 Fuses, Jumpers and Dip-switches None Table 5-5    Input, Control Signals 
INPUTDESCRIPTIONCONNECTOR-PIN#CONNECTION FROM
FE_D0-15 Front-End Data bus, Digital TTL J1 RFI > Backplane
FE_PA0-9 Front-End Page Address bus, Digital TTL J1 RFI > Backplane
FE_SA0-5 Front-End Device Select Address bus, Digital TTL J1 RFI > Backplane
TX_TRIG_LTransmit trigger, Digital TTLJ1-D4RFI > Backplane
Table 5-6    Output TX pulses
OUTPUTDESCRIPTIONCONNECTED TO
XD1 - 128  128 transmitter channels via the connectors to the XD Bus 
Board TX128 > XD Bus Board > Relay Board 
						

							
GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
Chapter 5 - Components and Functions (Theory) 5 - 17
5-3-10-7 LEDs on the TX128 board
 
Figure 5-12   TX128 Board: LEDs
Table 5-7    LEDs on the TX128 Board
LED #LED COLORDESCRIPTIONNORMAL STATE
LD1  - Red Board Failure Normally OFF
LD2  - Green Board OK Normally ON
LD3  - Yellow Front-End Bus Protocol Error Normally OFF
LD4 - YellowScanNormally OFF
LD5 - YellowSpa reNormally OFF
LD5LD4LD3
LD2 LD1 
						

							
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DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
5 - 18 Section 5-3 - a  Front-End Processor (FEP)
5-3-10-8 Test points on the TX128 board
 
NOTE: The Voltages on these test points are approxi mately one tenth (1/10) of the TX Voltages used 
by the transmitter circuits. (The exact [calcu lated] value is 10/101). The measured values 
depends on selected scanning mode  and the Acoustic Power adjustment.
Figure 5-13   TX128 Board: Test points
Table 5-8    Test points on the TX128-5 Board
TESTPOINT #DESCRIPTIONTYPICAL VALUE
TP11 HV1+ /10 Between +0.25 VDC and +9.5 VDC
TP12 GROUND 0 VDC
TP13 HV1- /10 Between -0.25 VDC and -9.5 VDC
TP14HV2- /10Between -0.25 VDC and -9.5 VDC
TP15HV2+ /10Between +0.25 VDC and +9.5 VDC
TP12
TP14
TP15
TP11
TP13 
						

							
GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
Chapter 5 - Components and Functions (Theory) 5 - 19
5-3-11 Transmitter Board, TX12 8 (version used before BT’05)
5-3-11-1 General Description
The Transmitter board (TX128) contains 128 individually controlled transmit channels and provides 
transmit pulses via the XDBUS board to the Relay boa rd and then to the transducer array (the probes).
Frequency-, delay- and pulswidth parameters for the TX128 board are received on the FE_BUS from 
the Front End Controller (FEC) on units with FEP1,  and from the Radio Frequency Interface (RFI) on 
units with FEP2. The parameters are decoded and stored in the cache.
A pulse, TX_TRIG_L, trigs the Tran smit Pulse Generators. The transmit pulses are then amplified to the 
correct level in the 128 TX transmitters. 
High Voltage 1 and High Voltage 2 from the TX Power supplies the TX Transmitters with the needed 
voltages to generate the correct power. 
The VDRIVER voltage is used by the TX Dr ivers (drivers for the TX transmitters).
Two TX128 boards are used on units with the 3D option. Figure 5-14   Block Diagram for the TX128 board
8
TRANSMIT
(128 CH.)
TX
128
TRANSMITTERS CACHE
FRONT END
INTERFACE
PULSE GEN.
FROM TX POWER
HV1&2
TX_TRIG_L FROM FEC/RFI
FE_BUS
XD1-128
TO RLY VIA XDBUS HV1P
HV2P
HV2N
HV1N
VDRIVER
(+10V)
FROM DC POWER
FROM FEC/RFI 
						

							
GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
5 - 20 Section 5-3 - a  Front-End Processor (FEP)
5-3-11-2 Location in the Unit
5-3-11-3 Input DC Voltages
 
NOTICEPlease be careful about the positions when replacing  the TX card and the RX card. The position of the 
two cards are interchanged between FEP1 and FEP2.
Figure 5-15   TX128 Board: Location in Unit
Table 5-9    Input, DC Voltages
INPUTDESCRIPTIONCONNECTOR-PIN#CONNECTION FROM
+6 Va DC voltage, distributed via Motherboard (Backplane). 
The “a” indicates that this vo ltage is used for analog circuits. J7-A22,B22,C22,D22,E22
DC Power Supply > 
Backplane 
+10 Va DC voltage, distributed via Motherboard (Backplane). 
The + 10Va is only used by this board. J6-C5,D5,E5
DC Power Supply > 
Backplane 
-5 Va DC voltage, distributed via Motherboard (Backplane).  J6-C3,D3,E3 DC Power Supply > 
Backplane
-15 VDC voltage, distributed via Motherboard (Backplane). J6-C1,D1,E1DC Power Supply > Backplane
GNDGround is distributed via Motherboard (Backplane).DC Power Supply > Backplane 
HV1
TX Voltage 1 
Voltage can be programmed to vary from +/- 2.5 V to +/- 80V Used to drive the transmitters in 2D Mode and M ModeHV1N: J6-A15HV1P: J6-A24TX Power Supply >  Backplane
HV2 TX voltage 2
Voltage can be programmed to vary from +/- 2,5 V to +/- 40V Used to drive the transmitters in Doppler (CW/PW) mode  and in Color Flow Mapping (CFM) mode HV2N: J6-A18
HV2P: J6-A21 TX Power Supply > 
Backplane
TX128 
BOARD
FRONT OF 
SCANNER
FEP1
FEP2 with two TX boards
FRONT OF 
SCANNER
TX128 
BOARDS (2X) 
						

							
GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
Chapter 5 - Components and Functions (Theory) 5 - 21
5-3-11-4 Control Signals
5-3-11-5 Outputs
5-3-11-6 Fuses, Jumpers and Dip-switches None Table 5-10    Input, Control Signals 
INPUTDESCRIPTIONCONNECTOR-PIN#CONNECTION FROM
FE_D0-15 Front-End Data bus, Digital TTL J1 Front-End Controller/RFI > 
Backplane
FE_PA0-9 Front-End Page Address bus, Digital TTL J1 Front-End Controller/RFI > 
Backplane
FE_SA0-5 Front-End Device Select Address bus, Digital TTL J1 Front-End Controller/RFI > 
Backplane
TX_TRIG_LTransmit trigger, Digital TTLJ1-D4Front-End Controller/RFI > 
Backplane
Table 5-11    Output TX pulses
OUTPUTDESCRIPTIONCONNECTED TO
XD1 - 128  128 transmitter channels via the connectors to the XD Bus 
Board TX128 > XD Bus Board > Relay Board 
						

							
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DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
5 - 22 Section 5-3 - a  Front-End Processor (FEP)
5-3-11-7 LEDs on the TX128 board
 
Figure 5-16   TX128 Board: LEDs
Table 5-12    LEDs on the TX128 Board
LED #LED COLORDESCRIPTIONNORMAL STATE
LD1  - Red Board Failure Normally OFF
LD2  - Green Board OK Normally ON
LD3  - Yellow Front-End Bus Protocol Error Normally OFF
LD4 - YellowScanNormally OFF
LD5 - YellowSpa reNormally OFF
LD5LD4LD3
LD2 LD1 
						

							
GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
Chapter 5 - Components and Functions (Theory) 5 - 23
5-3-11-8 Test points on the TX128 board NOTE: If the test points below have not been mounted, and you want to verify the TX voltages, you  must use the TXP test, available via the Di agnostics Test Screen. Please refer to 7-8-3 System 
Test on page 7-66 .
 
NOTE: The Voltages on these test points are approxi mately one tenth (1/10) of the TX Voltages used 
by the transmitter circuits. (The exact [calcu lated] value is 10/101). The measured values 
depends on selected scanning mode and the Acoustic Power adjustment. Figure 5-17   TX128 Board: Test points
Table 5-13    Test points on the TX128 Board 
TESTPOINT #DESCRIPTIONTYPICAL VALUE
TP11 HV1+ /10 Between +0.25 VDC and +8.0 VDC
TP12 GROUND 0 VDC
TP13 HV1- /10 Between -0.25 VDC and -8.0 VDC
TP14HV2- /10Between -0.25 VDC and -4.0 VDC
TP15HV2+ /10Between +0.25 VDC and +4.0 VDC
TP12
TP14
TP15
TP11
TP13 
						

							
GE HEALTHCARE
DIRECTION FC091194, REVISION 11    VIVID 7 SERVICE MANUAL 
5 - 24 Section 5-3 - a  Front-End Processor (FEP)
5-3-12 Transducer Bus Boards, XD BUS
5-3-12-1 General Description The two XD BUS Boards plug into the rear edge  connectors on the Relay Board, the TX128 Board(s) 
and on the RX-128 Board. 
FEP2 ONLY:  The XD Bus boards used on units with two TX  boards, with 4D (RT3D), are not backward 
compatible and cannot be used on units with one TX card (without 4D (RT3D)). And the XD Bus board 
used on units with one TX board cannot be used on units with two TX boards.
FEP2 ONLY:  The connectors for the Relay Board connection, are color coded to match the colors on 
the connectors on the Relay Board, to reduce th e risk of mixing the two types of XD Bus boards.
The XD signals to and from the probes (via the Relay Board) are routed via this board. 
5-3-12-2 Location in the Unit
NOTICETwo different versions of the XD Bus boards are us ed due to the different positions for TX board and 
RX board on FEP1 and FEP2. The two types can NOT be interchanged.
Figure 5-18   XD BUS Boards : Location in Unit with FEP1.
XD BUS BoardFront of 
Scanner
XD BUS Board