DOC AIRBUS | AMM A320FUP AND DOWN DATA LOADING SYSTEM ACQUISITION/INTERFACE AND EQUIPMENT (DLRB, DLSU) - DESCRIPTION AND OPERATION
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1. General
The digitalization function is to remove the physical field load-service media-on-board. The airline must download Airbus and suppliers software through the Airbus Electronic-Delivery Service.
The data uploading and downloading system is an interface between the onboard computers and the ground-based data-processing stations.
It has the functions that follow (only operational on the ground):
The digitalization function is to remove the physical field load-service media-on-board. The airline must download Airbus and suppliers software through the Airbus Electronic-Delivery Service.
The data uploading and downloading system is an interface between the onboard computers and the ground-based data-processing stations.
It has the functions that follow (only operational on the ground):
A. Uploading Function
This function is used on the ground to update the databases of some onboard computers or to change part of their operational software from a medium (3.5 inch disk, CD-ROM or USB mass storage).
On the ground, this function lets you update the database of some onboard computers or change part of their operational software.
This function is used on the ground to update the databases of some onboard computers or to change part of their operational software from a medium (3.5 inch disk, CD-ROM or USB mass storage).
On the ground, this function lets you update the database of some onboard computers or change part of their operational software.
B. Downloading Function
This function is used on the ground to download to a medium (3.5 inch disk, CD-ROM or USB mass storage), the data recorded by some computers during aircraft operation.
It is possible for the Airlines to make an analysis of these data on the ground with an applicable data processing tool.
On the ground, this function lets you download the data that the computers record during the aircraft operation.
It is possible for the airlines to make an analysis of these data on the ground with an applicable data processing tool.
This function is used on the ground to download to a medium (3.5 inch disk, CD-ROM or USB mass storage), the data recorded by some computers during aircraft operation.
It is possible for the Airlines to make an analysis of these data on the ground with an applicable data processing tool.
On the ground, this function lets you download the data that the computers record during the aircraft operation.
It is possible for the airlines to make an analysis of these data on the ground with an applicable data processing tool.
2. Component Location
The system has the components that follow:
Two storage boxes are installed in the cockpit for the disks, in sidewall panels 211FW and 212FW.
The system has the components that follow:
** ON A/C NOT FOR ALL The system has the components that follow:
Data Uploading and Downloading System - Component Location- Wiring
- A Data Loading Selector Unit (DLSU) (103TD)
- A Data Loading Routing Box (DLRB) (102TD)
- A DLSU mapping-table-software CD-ROM (103TD/MD1).
Two storage boxes are installed in the cockpit for the disks, in sidewall panels 211FW and 212FW.
The system has the components that follow:
- The Wiring
- The Data Loading Selector Unit (DLSU) (103TD)
- The Data Loading Routing Box (DLRB) (102TD).
| FIN | FUNCTIONAL DESIGNATION | PANEL | ZONE | ACCESS DOOR | ATA REF |
|---|---|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||||
| 103TDMD1 | CD-DLSU MAPPING TABLE SOFTWARE | 117 VU | 121 | 31-38-00 | |
| ** ON A/C NOT FOR ALL | |||||
| 103TD | DLSU | 117 VU | 121 | 31-38-23 | |
| 102TD | ROUTING BOX-DATA LOADING | 80VU | 120 | 31-38-34 | |
3. System Description
A. Description
- DLSU
With the DLSU, the user monitors the operation and the operation mode of the DLRB. The user can scroll up or down the target list of Line Replaceable Units (LRUs) that is shown on the DLSU display and to select or unselect the applicable LRU. - DLRB
The DLRB sends the input/output data between the disk unit, the USB flash drive or the CD-ROM and the target computer.
It is not mandatory to use the configuration file for downloading.
- DLSU
With the DLSU, the user monitors the operation and the operation mode of the DLRB. The user can scroll up or down the list of Line Replaceable Units (LRUs) that is shown on the DLSU display and thus select or unselect the applicable LRU. - DLRB
The DLRB sends the input/output data from the software to the target computer and from the target computer to the software.
It is not mandatory to use the configuration file to download the data.
B. Architecture - Computer Interface
Each computer can load data at low speed (ARINC 615 norm) and is connected to the DLRB with two ARINC 429 (input/output) buses and one related load enable discrete.
The Flight Management and Guidance Computer 1(FMGC 1), Air Traffic Service Unit (ATSU), Display Management Computer 1 (DMC 1) and Flight Operations and Maintenance eXchanger (FOMAX) (if installed) can also load data at high speed (ARINC 615A standard). They are connected to the DLRB with Ethernet buses (input/output) and one load enable discrete.
Connected computers:
Each computer can load data at low speed (ARINC 615 norm) and is connected to the DLRB with two ARINC 429 (input/output) buses and one related load enable discrete.
The Flight Management and Guidance Computer 1(FMGC 1), Air Traffic Service Unit (ATSU), Display Management Computer 1 (DMC 1) and Flight Operations and Maintenance eXchanger (FOMAX) (if installed) can also load data at high speed (ARINC 615A standard). They are connected to the DLRB with Ethernet buses (input/output) and one load enable discrete.
Connected computers:
(a) To update the NAV database (waypoints, NAVAIDS, runways, airports, etc.) that the FMGCs use for the flight plans.
(a) To load the maintenance filter database.
(b) Other connections:
- An input discrete signal for the test function
- An output discrete signal for the test result.
(4) Display Management Computer 1 (DMC 1) (Ref. AMM D/O 31-63-00-00)
- To load the operational software of the computer.
(5) Flight Data Interface and Management Unit (FDIMU)
- To load the Digital Flight Data Recording System (DFDRS) software of the FDIMU (Ref. AMM D/O 31-33-00-00)
- To load the Aircraft Integrated Data System (AIDS) software of the FDIMU (Ref. AMM D/O 31-36-00-00).
(6) Elevator Aileron Computers 1 and 2 (ELACs 1 and 2) (Ref. AMM D/O 27-93-00-00)
- To load the ELAC software.
(a) To load the BMC data software.
(8) Flight Operations and MAintenance eXchanger (FOMAX) (if installed) (Ref. AMM D/O 46-26-32-00):
- To load the FOMAX software of the computer.
(9) Spoiler Elevator Computer 1, 2 and 3 (SECs 1, 2 and 3) (Ref. AMM D/O 27-94-00-00)
- To load the SEC software.
(10) Traffic Alert and Collision Avoidance System (TCAS) (Ref. AMM D/O 34-72-10-00)
- To load the software of the TCAS computer.
(11) Flight Augmentation Computers 1 and 2 (FACs 1 and 2) (Ref. AMM D/O 22-60-00-00)
- To load the FAC software.
(12) Head Up Display Computers 1 and 2 (HUDCs 1 and 2) (if installed) (Ref. AMM D/O 34-00-00-00)
- To load the HUDC software.
(13) Air Data/Inertial Reference Units 1, 2 and 3 (ADIRUs 1, 2 and 3) (Ref. AMM D/O 34-12-00-00)
- To load the ADIRU software of the computer.
(14) Onboard Airport Navigation System (OANS) (if installed) (Ref. AMM D/O 34-38-00-00)
- To load the OANS software of the computer.
(16) Satellite Data Unit (SDU) (if installed) (Ref. AMM D/O 23-28-00-00)
- To load the SATCOM software.
(17) Engine Interface Units 1 and 2 (EIUs 1 and 2) (Ref. AMM D/O 73-25-00-00)
- To load the EIU software.
(18) High Frequency Data Radios 1 and 2 (HFDRs 1 and 2) (Ref. AMM D/O 23-11-00-00)
- To load the HFDR software of the computer.
C. Architecture - Landing Gear Control and Interface Unit (LGCIU)
The LGCIU uses a Weight On Wheels (WOW) signal to send flight/ground information.
The LGCIU uses a Weight On Wheels (WOW) signal to send flight/ground information.
(1) Ground
The right main-gear shock-absorber is compressed.
The right main-gear shock-absorber is compressed.
(2) Flight
The right main-gear shock-absorber is extended.
The right main-gear shock-absorber is extended.
D. Architecture - DLRB/DLSU Interface
The DLSU sends the user commands to the DLRB and shows the result of these commands to the DLRB.
The DLSU sends the user commands to the DLRB and shows the result of these commands to the DLRB.
(1) ARINC 429 input/output.
(2) 'Load enable' discrete signal (ON/OFF function):
Discrete signal from LGCIU1 to the DLRB when a Portable Data Loader (PDL) is connected with its cable to the DLSU (refer to the ARINC 615 standard).
Discrete signal from LGCIU1 to the DLRB when a Portable Data Loader (PDL) is connected with its cable to the DLSU (refer to the ARINC 615 standard).
4. Power Supply
The system uses 28VDC and 115VAC.
The system uses 28VDC and 115VAC.
A. 28VDC Power Supply
The DLRB and the DLSU are supplied with 28VDC in flight and on the ground.
The DLRB and the DLSU are supplied with 28VDC in flight and on the ground.
B. 115VAC Power Supply
The PDL is supplied with 115VAC from the DLSU.
The PDL is supplied with 115VAC from the DLSU.
5. Interface
The DLRB is connected to loadable computers with ARINC 429 buses and discrete signals.
The DLRB is connected to loadable computers with ARINC 429 buses and discrete signals.
A. A429 Interface
The interface between the DLRB and the DLSU uses an ARINC 429 bidirectional serial-link.
The interface between the DLRB and the DLSU uses an ARINC 429 bidirectional serial-link.
(1) Exchange of information on the serial line
(a) From the DLRB to the DLSU
1 In the normal operation mode:
The text content shown on the Liquid Crystal Display (LCD) screen.
The text content shown on the Liquid Crystal Display (LCD) screen.
2 In the power-up mode of the DLSU:
Information related to the initialization of the LCD screen.
Information related to the initialization of the LCD screen.
(b) From the DLSU to the DLRB
1 In the normal operation mode:
NEXT, PREV, SEL key signals and DLSU BITE status processed by the DLRB.
NEXT, PREV, SEL key signals and DLSU BITE status processed by the DLRB.
2 In the power-up mode:
The BITE test status result with analysis of the DLRB.
The BITE test status result with analysis of the DLRB.
B. DLSU Interface (Messages)
A LCD backlighted screen with two lines of 16 characters:
A LCD backlighted screen with two lines of 16 characters:
- One line for the target computer
- Next line for the status of its link with the disk unit.
(1) Name and status of the LRUs (SELECTED/NOT SELECTED)
(a) List of messages that come into view when you scroll up or down the menu with the PREV/NEXT key:
- LRU (Target)
SELECTED
or - LRU (Target)
NOT SELECTED
NOTE: When this display flashes two or three times, it shows that the NEXT/PREV action is in progress but the function does not operate.
(2) List of fault messages
(a) Selected channel failure after you push the SEL key:
- LRU CHAN FAIL
PUSH SEL
C. DLSU Interface (other messages)
(1) Message that comes into view when the DLSU is energized and when you scroll up or down the step menu or at the end of the DLRB loading procedure:
DB/N:
PUSH NEXT/PREV
DB/N:
PUSH NEXT/PREV
NOTE: The name of the database is given after the DB/N: indication but not if it is the first loading of the DLRB.
(2) Automatic display after failure of a DLRB loading procedure:
UP-LOADING ERROR
PUSH SEL
Fault symptom origin:
UP-LOADING ERROR
PUSH SEL
Fault symptom origin:
- Not written in the EEPROM database
- The protocol abnormally aborted with the PDL (as per ARINC 615).
(3) STANDBY message:
STANDBY
PUSH NEXT/PREV
This menu is shown before the programmed scrolling menu.
STANDBY
PUSH NEXT/PREV
This menu is shown before the programmed scrolling menu.
6. Component Description
A. DLRB (102TD)
The DLRB is used for the selection of target LRUs (a maximum of 36) before their loading with a PDL. The connection is made with ARINC 429 bi-directional buses and discrete-related load-enable lines.
The DLRB is used for the selection of target LRUs (a maximum of 36) before their loading with a PDL. The connection is made with ARINC 429 bi-directional buses and discrete-related load-enable lines.
B. DLSU (103TD)
The DLSU is the remote unit that controls the DLRB. The user interface has a two-line LCD, an ON/OFF switch and three keys on the front panel.
The ON/OFF switch operates or stops the DLRB with the ON/OFF discrete output. The ON/OFF switch does not control the DLSU power supply directly. The DLRB energizes the DLSU through its supply outputs.
When it is energized, the two-line screen shows the name of the LRU channel and its status (selected/not selected). With the PREV and NEXT keys, you can scroll up or down the list of permitted LRUs. With the SEL key, you can select or deselect an LRU.
The DLSU is the remote unit that controls the DLRB. The user interface has a two-line LCD, an ON/OFF switch and three keys on the front panel.
The ON/OFF switch operates or stops the DLRB with the ON/OFF discrete output. The ON/OFF switch does not control the DLSU power supply directly. The DLRB energizes the DLSU through its supply outputs.
When it is energized, the two-line screen shows the name of the LRU channel and its status (selected/not selected). With the PREV and NEXT keys, you can scroll up or down the list of permitted LRUs. With the SEL key, you can select or deselect an LRU.
7. Operation/Control and Indicating
A. DLSU
With the DLSU, you can select the applicable computer. An LCD display shows the name of the loadable systems. You can update this list with the PDL.
The DLSU is serviceable on the ground only.
Its front face has:
With the DLSU, you can select the applicable computer. An LCD display shows the name of the loadable systems. You can update this list with the PDL.
The DLSU is serviceable on the ground only.
Its front face has:
- A two-line LCD alphanumeric-display
- Three keys
- An ON/OFF power switch
- A PDL plug.
(1) Keys
There are three tactile keys for selection of the target. With the PREV and NEXT keys, you can scroll up and down the LRU target list. With the SEL key, you can select or deselect the applicable LRU. This list of computers, shown on the DLSU, is retrieved from the DLSU mapping table software.
There are three tactile keys for selection of the target. With the PREV and NEXT keys, you can scroll up and down the LRU target list. With the SEL key, you can select or deselect the applicable LRU. This list of computers, shown on the DLSU, is retrieved from the DLSU mapping table software.
(a) PREV and NEXT keys
With the PREV and NEXT keys, the operator can scroll up or down the list of loadable computers.
With the PREV and NEXT keys, the operator can scroll up or down the list of loadable computers.
(b) SEL key
When you push the SEL key, it selects the computer that you will load. If you push the SEL key a second time, it deselects the selected computer.
When you push the SEL key, it selects the computer that you will load. If you push the SEL key a second time, it deselects the selected computer.
B. DLRB
The DLRB lets you select between a target LRU (load enabled) computer and a PDL. The purpose of the DLRB is to do the maintenance of a target LRU computer on the ground.
The primary functions of the DLRB are as follows:
The DLRB lets you select between a target LRU (load enabled) computer and a PDL. The purpose of the DLRB is to do the maintenance of a target LRU computer on the ground.
The primary functions of the DLRB are as follows:
- Switching of the data-loader ARINC 429 bus to the applicable LRU bus including the LOAD ENABLE outputs
- Interface with the operator with the DLSU
- Reading of the ON/OFF and AIR/GND discrete inputs to find its functional status (on or off)
- Start of its self-tests (CFDIU command) and communication of BITE results on its NOT HEALTHY output
- Communication with the maintenance terminal or the test bench.
C. PDL
(1) Principle of the uploading/downloading procedure
For more information on data loading, refer to the PDL user guide or to the maintenance procedure related to the equipment on which you will do the uploading or downloading.
For more information on data loading, refer to the PDL user guide or to the maintenance procedure related to the equipment on which you will do the uploading or downloading.
(2) Security recommendations
The data security of the last-generation PDLs applies. Airbus recommends that you use digital signatures to keep the integrity and authenticity of the software used in the onboard computers.
The data security of the last-generation PDLs applies. Airbus recommends that you use digital signatures to keep the integrity and authenticity of the software used in the onboard computers.
8. BITE
A. DLRB BITE Test
The equipment has a BITE function to monitor the operation of the DLRB, and to make the analysis of the faults and confirm them. But these faults are not stored in the Non-Volatile Memory (NVM).
The DLRB/DLSU is a type-3 system.
The CFDIU starts the DLRB/DLSU self-test sequence through a discrete input. The DLRB gives the BITE status result on an output discrete (this result includes the BITE of the DLS).
The central unit of the DLRB does the DLSU self-test. The BITE capability of the DLSU is passive and consists in information of status bits. These bits are available through the RS422 line.
The self-test always occurs at the time of the power-up sequence regardless of the TEST and ON/OFF discrete inputs. But, the aircraft ground configuration is necessary (for example: AIR/GROUND signal).
The DLRB BITE has the functions that follow:
The equipment has a BITE function to monitor the operation of the DLRB, and to make the analysis of the faults and confirm them. But these faults are not stored in the Non-Volatile Memory (NVM).
The DLRB/DLSU is a type-3 system.
The CFDIU starts the DLRB/DLSU self-test sequence through a discrete input. The DLRB gives the BITE status result on an output discrete (this result includes the BITE of the DLS).
The central unit of the DLRB does the DLSU self-test. The BITE capability of the DLSU is passive and consists in information of status bits. These bits are available through the RS422 line.
The self-test always occurs at the time of the power-up sequence regardless of the TEST and ON/OFF discrete inputs. But, the aircraft ground configuration is necessary (for example: AIR/GROUND signal).
The DLRB BITE has the functions that follow:
- Acquisition of discrete input signals
- Communication with the DLSU (through RS422) and CFDIU (through a discrete output).
The BITE has two basic functions: - Power-on self-test
- Test result.