GE FC091194, Руководство по обслуживанию

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GE M
EDICAL
S
YSTEMS
D
IRECTION
FC091194, R
EVISION
02 V
IVID
7 / V
IVID
7 PRO S
ERVICE
M
ANUAL
5 - 14 Section 5-4 - Back End Processor
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 for an overview of the
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 5-14 .
Figure 5-5 Backend Processor Mounted in Scanner (BEP-1 shown)
Backend Processor
Front of
Scanner
BEP seen from Left Side of Scanner