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B - Operational status messages
C - Warning messages
TMUEISH03 LEVEL 1
EFFECTIVITY 31-50-00 Page 18
Oct 31/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 31 INDICATING/RECORDING SYSTEMS
UF94200
EFFECTIVITY Page 132
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31 - INDICATING/RECORDING SYSTEMS
31-50-00 EIS: ECAM DESCRIPTION/OPERATION
CONTENTS:
General Architecture
SDAC
FWC
DMC
Interface
Self Examination
TMUEISU02 LEVEL 3
EFFECTIVITY 31-50-00 Page 1
Jun 30/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 31 INDICATING/RECORDING SYSTEMS
UF94200
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ALL
EIS: ECAM DESCRIPTION/OPERATION
GENERAL ARCHITECTURE
The Electronic Centralized Aircraft Monitoring (ECAM)
performs three main functions:
- data acquisition and concentration,
- data warning computation,
- warning announcement and data display.
Data acquisition is shared between:
- the System Data Acquisition Concentrators
(SDACs),
- the Flight Warning Computers (FWCs),
- the Display Management Computers (DMCs).
Data warning computation and memo information are
achieved by the FWCs. Warning announcement and Data
display is made through Loudspeakers and Display Units.
The FWCs provide aural and visual information in order
to:
- know, in real time, all the system failures
and dangerous configurations with their level
of seriousness,
- identify the systems or circuits affected by
a failure,
- take the appropriate corrective action.
TMUEISU02-T01 LEVEL 3
EFFECTIVITY 31-50-00 Page 2
Jun 30/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 31 INDICATING/RECORDING SYSTEMS
UF94200
EFFECTIVITY Page 134
ALL
TMUEISU02-P01 LEVEL 3
EIS: ECAM DESCRIPTION/OPERATION - GENERAL ARCHITECTURE
EFFECTIVITY 31-50-00 Page 3
Jun 30/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 31 INDICATING/RECORDING SYSTEMS
UF94200
EFFECTIVITY Page 135
ALL
EIS: ECAM DESCRIPTION/OPERATION
SDAC
The two System Data Analog Computers (SDACs) are
identical and interchangeable.
They perform three main functions:
- data acquisition,
- data concentration,
- data digitalization.
The SDACs acquire, from the aircraft systems, the
malfunction and failure data corresponding to caution
situations and send it to the FWCs for generation of
the corresponding alert and procedure messages.
The two SDACs acquire and send, to the three DMCs, all
the A/C system signals necessary for the display on
the System Display (SD). They are also used as data
concentrators for other systems (example: FDIU).
All the signals (discrete, analog, digital) entering
into the SDAC are concentrated and converted into
digital format.
They are delivered via the SDAC outputs on ARINC 429
high speed buses called DATA BUSES.
The SDAC operational software is contained in a
specific device called OBRM (On Board Replaceable
Module) in order to facilitate any software
modification.
TMUEISU02-T02 LEVEL 3
EFFECTIVITY 31-50-00 Page 4
Jun 30/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 31 INDICATING/RECORDING SYSTEMS
UF94200
EFFECTIVITY Page 136
ALL
EIS: ECAM DESCRIPTION/OPERATION - SDAC
TMUEISU02-P02 LEVEL 3
EFFECTIVITY 31-50-00 Page 5
Jun 30/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 31 INDICATING/RECORDING SYSTEMS
UF94200
EFFECTIVITY Page 137
ALL
EIS: ECAM DESCRIPTION/OPERATION
FWC
The two Flight Warning Computers (FWCs) are identical
and interchangeable.
They perform three main functions:
- data acquisition,
- data warning computation corresponding to
warning situations,
- flight phase computation.
The FWCs also generate aural alerts as well as
synthetic voices for radio height, automatic call out
and other announcements.
The FWCs perform acquisition directly from the systems
not connected to the SDACs for Red Warnings (Master
Warning) computation and generation, and acquisition
of the SDAC DATA BUSES for Amber Warning (Master
Caution) computation and generation.
Each FWC generates alphanumeric codes corresponding
to all texts and messages to be displayed on the ECAM
display units.
These are:
- system and warning titles,
- procedures associated with the warnings,
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