GE HEALTHCARE
DIRECTION FC091194, REVISION 11 VIVID 7 SERVICE MANUAL
5 - 64 Section 5-3 - a Front-End Processor (FEP)
5-3-21-12 DC Voltages
5-3-21-13 Input Signals
5-3-21-14 Bi-directional Signals
Table 5-50 DC Input Voltages
INPUT DESCRIPTION CONNECTED TO
+ 3.3 Vd
DC output voltage, distributed via Motherboard
(Backplane).
The “d” indicates that this voltage is used for digital circuits.
DC Power Supply via Backplane
+ 5 Vd
DC output voltage, distributed via Motherboard
(Backplane).
The “d” indicates that this voltage 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
+ 15 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 Va
DC output voltage, distributed via Motherboard
(Backplane).
The “a” indicates that this voltage is used for analog circuits.
DC Power Supply via Backplane
GND Distributed via Motherboard (Backplane) DC Power Supply via Backplane
Table 5-51 DC Voltages generated locally on RFI (regulated from +3.3 Vd)
VOLTAGE DESCRIPTION CONNECTED TO
+ 2.5 V Generated from +3.3 Vd. On-board use only. N/A
+ 1.5 V Generated from +3.3 Vd. On-board use only. N/A
+1.4 V Generated from +3.3 Vd. On-board use only. N/A
-2 V Generated from -5 Va. ECL termination voltage. Backplane
Table 5-52 Signal Inputs
INPUT DESCRIPTION CONNECTION FROM
PRPRES Probe Present Relay Board via Backplane
High Voltage V & I
Sense
Senses the voltages and currents from the TX Supply TX Power via Backplane
MLA data (2 buses) Digitized received ultrasound signals from Beam Formers Beam Formers via Backplane
Table 5-53 Bi-directional Signals
NAME DESCRIPTION CONNECTION TO/FROM
PC2IP COMMUNICATION WITH BEP PC2IP (BEP)
FEBUS COMMUNICATION WITH THE OTHER BOARDS IN FEP
I
2
C BUSES
FOR TEMPERATURE AND PROBE ID
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