Q. ACARS Functions The DMU is able to manage different functions to send data via ACARS to the ground (Downlink) or receive data via ACARS from the ground (Uplink). The following functions for downlink and uplink messages are given as below:
R 1EFF : 001-049, 051-099, 101-105, 1 31-36-00Page 66 1 1 Config-1 May 01/05 1 1 1CES 1 Downlink (manually and automatically):
*
AIDS Reports either manual or automatically initiated reports
*
Advisory Messages
-
due to SAR trigger condition
>> Data recording
>> Extended Troubleshooting
>> Event Recording
-
due to SAR memory dump status
>> Data recording - memory dump successful
>> Data recording - memory dump unsuccessful
>> Event recording - memory dump successful
>> Event recording - memory dump unsuccessful
>> Extended troubleshooting - memory dump successful
>> Extended troubleshooting - memory dump unsuccessful
response on uplink request:
* AIDS reports
-immediately initiated
* List of data
-List of temporary changes
-SAR statistic
-SW configuration load status
* Acknowledgement of
-
Temporary changes on uplink request
-
Temporary changes return to default
-Activation of predefinded function
-Modification of Eng. and APU data (ESN, Eng. Cycle Counter)
-Enable/Disable of SAR trigger messages
R 1EFF : 001-049, 051-099, 101-105, 1 31-36-00Page 67 1 1 Config-1 May 01/05 1 1 1CES 1 Uplink:
*
Downlink of reports
-Activation of immediate Generation and Downlink
*
Request for Downlink of list of data
-List of temporary changes
-SAR statistic
-SW configuration load status
*
Activation of predefined functions
-Reports due to predefined logic
-Reset delta EGT
*
Activation/Inhibit of Messages
-SAR trigger messages
*
Reprogramming of functions
-
Temporary changes of limits and constants
-
Temporary changes return to default
-Change of APU and engine serial number and associated hours and cycle counters
8. Operation/Control and Indicating
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A. Energization During normal operation the AIDS is automatically in normal mode at the power-on condition. The DMU is supplied directly from busbar 202XP (115VAC). The DAR (optional) is supplied from busbar 204PP (28VDC).
B. Control and Indication via MCDU The communication with the aircraft systems is done via a Multipurpose Control Display Unit (MCDU) according to ARINC-739. The control of the DMU is done by an interactive and menu controlled user interface.
C. MCDU Functions and Rules
R (Ref. Fig. 010) Some of the AIDS functions are controlled by the MCDU. The MCDU display has 14 lines, each line has 24 characters. Line 1 is used as a title line or to show data to which the operator does not have access. Line 14 is used as a scratchpad line for entering data into the system. Lines 2 through 13 are data lines arranged into six pairs (lines 2-3, 4-5, 6-7, 8-9, 10-11, 12-13). Each pair of lines has a label line and a data line. The data lines are adjacent to the Line Select Keys (LSK), and the label line is above the data line. The line pairs are referenced by LSKs as shown below and in the menu figures:
R 1EFF : 001-049, 051-099, 101-105, 1 31-36-00Page 68 1 1 Config-1 May 01/05 1 1 1CES 1
R MCDU Figure 010
R 1EFF : 1 1 1CES 001-049, 051-099, 101-105, 1 111 Page 6931-36-00 Config-1 May 01/05
LSK CRT Lines
1L and 1R 2 and 3 2L and 2R 4 and 5 3L and 3R 6 and 7 4L and 4R 8 and 9 5L and 5R 10 and 11 6L and 6R 12 and 13
The LSKs allow entry of data into a field and access to a data or a function identified by that field.
(1) MCDU Keys The keyboard has the following alphanumeric keys: Activating an alphanumeric key (0 through 9, A through Z, ., +, -, . and / ) enters that character into the scratchpad of the MCDU.
If you push the MCDU MENU the display shows the MCDU menu. The other
mode keys are not used for AIDS.
Function keys
'NEXT PAGE' = shows the next page
'ARROW up' = scrolls the displayed page up
'ARROW down' = scrolls the displayed page down
'CLR' = clears the scratchpad and data
fields. ' . OVFY' = enters a . into the scratchpad (not used 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM 指示/记录系统 3(30)
