Back End Processor; Introduction; Signal Flow And Processing; Location Of The Back End Processor - GE Vivid 7 Service Manual

GE M S
EDICAL YSTEMS
D FC091194, R
IRECTION
Section 5-4

Back End Processor

5-4-1

Introduction

The Back End Processor is a computer designed specially for the use in Ultrasound Scanners made by
GE. The first version, called BEP-1 in this manual, has been used since the introduction of the Vivid 7 /
Vivid 7 PRO ultrasound scanners. A new version, called BEP-2 in this manual, will be introduced second
half of 2002 as a replacement for BEP-1, both for new ultrasound scanners from factory and for service
replacement in the field.
When the descriptions in this section applies only to one of the models, it will be marked in the text (BEP-
1 or BEP-2)
5-4-2

Signal Flow and Processing

The Back End Processor receives the data from the Front-End Electronics, stores it in memory,
performs scan conversion to pixel domain, and drives the system RGB monitor.
Back End Processor software is also providing processing of Color Flow, Doppler, and M-Mode Data.
See Figure 5-6 "CPU/Backend Processor Block Diagram (BEP-1)" on page 5-15
Back End Processor.
5-4-3

Location of the Back End Processor

The BEP is located on the left side, inside the scanner. The cover on the left side has been removed in
Figure 5-5 "Backend Processor Mounted in Scanner (BEP-1 shown)" on page
Figure 5-5 Backend Processor Mounted in Scanner (BEP-1 shown)
5 - 14
02
EVISION
BEP seen from Left Side of Scanner
Section 5-4 - Back End Processor
V 7 / V 7 PRO S
IVID IVID ERVICE
for an overview of the
5-14.
Backend Processor
Front of
Scanner
M
ANUAL