GE Vivid E7

GE
D
IRECTION GB091046, REVISION 2 VIVID E9 / VIVID E7 BT’13 SERVICE MANUAL
Chapter 5 - Components and functions (theory) 5 - 29
5-8-2-4 Signal control
NOTE: The number of cards depend on the VIVID E9 / VIVID E7 model, and options installed.
• The Global Radio Frequency Interface (GFI) board controls the GTX (transmitter) and GRX / DRX
(analog and digital receiver boards). GFI loads all parameters to the GTX and DRX ASICs. It reads
the probe identification, selects probe connector on Relay board and controls the high voltage
multiplexer in linear probes.
In addition the GFI generates:
- the transmit trigger pulse for GTX
- a receive synchronization pulse (TXTRIG_L) used by DRX
- a differential ATGC voltage used by GRX
- global 50 MHz and 200 MHz system clocks and Reset pulse (SRES)
- Test signal / Dither signal
- Probe ATGC for 3V probe
The output signals from the DRX is fed to the GFI for further signal processing. The result is transferred
via the PCI Express (PCIe) bus to the BEP for more signal processing.
Figure 5-15 The Ultrasound Transmitter and Receiver Control Signals
RELAY
BOARD
GRX
GFI
BOARD
PROBES
DOPPLER PROBE
XD_BUS
FE_BUS
DRX
GTX
STA_BUS
LVDS_BUS
DLP
DL
FE_BUS
CW_BUS (RX)
PCIe BUS
TO/FROM BEP