Table of Contents
GE
D
GB091046, R
IRECTION
5-8-2-2
Phased and Linear Array probes
•
Phased and Linear Array probes consist of several identical transducer elements (e.g. 64, 128,
192).
•
Four probes can be connected to the system at the same time. The probe connectors are physically
located on the Relay Board, where one is selected and connected to the transmitter (GTX boards)
and receiver (GRX board) through a number of relays.
5-8-2-3
Receiver signal path
Figure 5-14 The Ultrasound Receiver
DOPPLER PROBE
PROBES
DLP
DL
NOTE:
The number of cards depend on the VIVID E9 / VIVID E7 model, and options installed.
•
The reflected signal from body structures and blood cells are routed from the probe, via the Relay
Board and the Front Plane to the GRX (receiver) boards, where pre-amplification and Analog Time
Gain Compensation (ATGC) is performed. The gain is determined by an analog control signal
(ATGC) generated by the Global Radio Frequency Interface board (GFI).
•
The output channels from the GRX boards are fed to the DRX boards where the signals in each
receiver channel are A/D converted. Then the beamforming for the received signals takes place.
5 - 28
2
EVISION
RELAY
BOARD
XD_BUS
Section 5-8 - Front End Processor (FEP)
VIVID E9 / VIVID E7 BT'13 S
CW_BUS (RX)
DRX
GRX
FE_BUS
LVDS_BUS
FE_BUS
GTX
STA_BUS
M
ERVICE
PCIe BUS
TO/FROM BEP
GFI
BOARD
ANUAL
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