GE Vivid 3

GE MEDICAL SYSTEMS
D
IRECTION 2300164-100, REVISION 7 VIVID™ 3 PRO/VIVID™ 3 SERVICE MANUAL
Chapter 5 - Components and Function (Theory) 5-23
5-4-6 Front End Controller Board (FEC) (RFT)
The Front End Controller (FEC) Board controls other boards in the Front End Crate. The control is done
through a synchronous and bidirectional Bus called the Front End Bus. The following tasks are
performed by the FEC Board:
• System master clock generation (including clock to IP).
• Transmitter control.
• ATCG control.
• Receive focusing control.
• Analog test signal control.
• Probe sensing.
• Transmit voltage control.
• Control of Front Board switching.
• Temperature sensing for the TEE probes.
• Memory refresh control for the BF Board.
• Provide 40 MHz clock to IP.
Figure 5-1: Front End Controller Block Diagram
FE Bus P2
FB, TX, RFT Trig Ps-A25
FB P-B35
FB, Probe CTRL P3
FB, ATGC P2-B37+
P2-D37-
All Boards P3-D25
P3-D26
Front End Bus
Interface
AGTC
Generator
Test Signal
Generator
XDCCTRL
Interface
EI Probe
ID/Select
Revision Detect
System Clock
Generator
VMA Bus
Interface
HV Control
HV Readback
CPU
Memory
P3 FB
P3 FB
VME Bus
P IP
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