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UP AND DOWN DATA LOADING SYSTEM COMPONENTS
GENERAL
This document shows the components of the data loading
system provided it is installed.
SAFETY PRECAUTIONS
The avionics computers are Electrostatic Sensitive
Devices (ESDs).
These components are susceptible to be damaged by
electrical sources that would not damage conventional
components.
The low energy source, that most commonly destroys
ESDs, is the human body which generates static
electricity in conjunction with the ground.
The precautions to follow are:
- de-energize all power and signal sources,
- place the unit on a grounded conductive work
surface,
- ground any tools that will contact the unit...
When it is specified on the maintenance manual.
MDDU
IDENTIFICATION
FIN: 1TD
LOCATION
ZONE: 211
COMPONENT DESCRIPTION
The MDDU contains :
- an electronic unit composed of a power supply,
Input/output and CPU / Floppy Disk Drive
Control boards,
- a Disk Drive installed on shock mounts,
- a window with 16-character alphanumerical LCD
display,
- a door protecting access to the Disk Drive.
SPECIAL DESIGN
The data support is a 3.5 inch double face, high density
disk (1.44 megabytes).
This disk is in MS-DOS format.
It can be read or written on ground by IBM-PC Ground
Support Equipment (GSE).
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UP AND DOWN DATA LOADING SYSTEM: COMPONENTS - MDDU
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UP AND DOWN DATA LOADING SYSTEM COMPONENTS
DLS
IDENTIFICATION
FIN: 101TD
LOCATION
ZONE: 212
COMPONENT DESCRIPTION
The Data Loading Selector (DLS) is a remote unit which
commands the Data Loading Routing Box (DLRB).
The DLS is composed of a two-line LCD display, an
ON/OFF switch and three keys on the front panel.
The "PREV" and "NEXT" keys allow the user to scroll
between the LRU names available in the list.
The "SEL CTL" key allows an LRU to be selected or
deselected.
DLRB
IDENTIFICATION
FIN: 102TD
LOCATION
ZONE: 120
COMPONENT DESCRIPTION
The Data Loading Routing Box (DLRB) routes the
imput/output data between the disk unit and the target
computer.
It is made of full static devices driven by software.
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UP AND DOWN DATA LOADING SYSTEM: COMPONENTS - DLS / DLRB
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31 - INDICATING/RECORDING SYSTEMS
31-33-00 DFDRS: DFDRS PRESENTATION
CONTENTS:
General
FDIU
SSFDR
Linear Accelerometer
DFDR EVENT Pushbutton
GND CTL Pushbutton
QAR
Self Examination
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DFDRS: DFDRS PRESENTATION
GENERAL
The purpose of the Digital Flight Data Recording System
(DFDRS) is to record various critical flight parameters
in a solid state memory to fulfil the mandatory
requirements of crash recording.
FDIU
The Flight Data Interface Unit (FDIU) is the heart of
the DFDRS.
The FDIU acquires, formats and supplies the SSFDR with
the mandatory parameters from various aircraft
systems.
The Centralized Fault Display Interface Unit (CFDIU)
is connected to the FDIU for system test and failure
data purposes.
The FDIU is located in the aft avionics rack.
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