GE LOGIQ 9 User Manual

GE MEDICAL SYSTEMS PROPRIETARY TO GE
D
IRECTION 2294854-100, REVISION 3 LOGIQ™ 9 PROPRIETARY MANUAL
5-14 Section 5-3 - Front End Processor
5-3-4 Equalization (EQ) Board
5-3-4-1 General Description
The EQ dynamically gains and filters the received signal output from the final beamformer sum. TGC
control calculates range dependent analog and digital gains. The digital gain is applied to the I/Q signal.
The gained signal is then rotated in frequency to place the frequency of interest in the passband of the
subsequent FIR lowpass filter. The rotator center frequency may also be range dependent. These
controls, and the selection of the FIR coefficients may also be processing bank, vector number, or
transmit focal zone dependent.
Figure 5-12 EQ Board Block Diagram
Scan
Control
Bus
SCAN
Control
I/F
Local
Board
Control
Temperature
Monitoring
Circuits
Voltage
Monitoring
Circuits
IIC
SPROM
IIC
A/D
Converters
Local
Board
Control
Local
Board
Control
XDIF/Probe Bus
To: XDIF & Relay
Comm Control Bus
To: XDIF
Local
Board
Control
XDIF
and
Probe I/F
Commutat
or
Control I/F
Local
Board
Control
CLK-10MHZ
CLK-10MHZ
Analog
Delay
Base
TGC
Dynamic
Apodization
Analog
TGC
Digital
TGC
TGC Bus
To: TDs
V-Ref
Gen
MUX
BARREL
SHIFTER
Gain
Mod’s
5
Gain
Mod’s
5
LUT
Delay
Td: I-dat
21
I (L,R)
5
Td: Q-dat
21
Q (L,R)
16
17
17
16
I (L,R) I (L,R)
16
Q (L,R)
16
Q (L,R)
16
I (L,R)
16
Q (L,R)
16
I (L,R)
16
Q (L,R)
16
I (L,R)
16
Q (L,R)
16
I (L,R)
Q (L,R)
MULTIPLIER NCOM
NCO
FPGA
FIR
FIR
Coef
RAM
Coef
RAM
Data Pipe Bus
To: BMP/SCB
BARREL
SHIFT
AND
OUTPUT
FPGA
EQ Board Block Diagram

GE LOGIQ 9 Specifications

General

Brand	GE
Model	LOGIQ 9
Category	Medical Equipment
Language	English