A320飞机维护手册 AMM 指示/记录系统 3(85)

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 The computer checks the data for format and acceptability (out of range, entry not allowed into the field, etc ...). If the data are incorrect, the system will leave the previous data in the data field and then display the associated message indicating the error in the scratchpad. To enter the correct data, the operator must do either of the following:
 -Clear the message from the scratchpad by activating the CLR key. The data that was incorrect will appear in the scratchpad. The operator can then correct the data or clear it out.
 -Enter new data into the scratchpad. This automatically clears the message being displayed and replaces the previous (incorrect) scratchpad data with the new data.
 If the entry was rejected because an incorrect LS key was activated, the entry will be accepted if the correct LS key is activated. To clear the scratchpad of entered or incorrect data, the CLR key can be used. One press of the CLR key erases the last character entered
R 1EFF : 106-149, 211-299, 301-399, 401-499, 1 31-36-00Page A17 1 1 Config-2 Aug 01/05 1 1 1CES 1 in the scratchpad. A second press of the CLR key erases the second last character. At the third press of the CLR key, all data in the scratchpad are deleted. The same process applies if the CLR key is held pressed. Immediately the last character is cleared, one second later, the second character is cleared, after 2 seconds the entire scratchpad will be cleared of any data. Certain data entries into a field also cause the displayed page to be changed automatically. In these cases, any scratchpad data are deleted. Otherwise, scratchpad data is retained when the displayed page is changed. During a page change, scratchpad entries are ignored.

 (9) Clearing Data Fields Data fields on the MCDU can be cleared using the CLR key. Activating the CLR key when the scratchpad is empty results in CLR being displayed. This appears in columns 6 to 8 of the scratchpad. Then, activating the LS key adjacent to the data field results in clearing that data and the scratchpad line is cleared. If the data have a default or computer calculated value, the data revert to this value. If the default value is cleared, the clearing has no effect and there is no message displayed. To remove a CLR prompt from the scratchpad, the CLR key can be activated again once. Or any alphanumeric key can be activated erasing the CLR in the scratchpad and entering the alphanumeric. The computer must distinguish between the CLR key and C-L-R being entered into the scratchpad via alphanumeric keys. C-L-R does not enable the clearing function.
 (10) MCDU Data Field Display Generally, a data is displayed on two lines:
 -
the label line above the data line,

 -
the data line next to the LSK.
 On the data line there are five kinds of display:

 

 -Cyan data if the data is already in the computer and the operator can modify it.
 -Green data if the data is already in the computer but it cannot be modified by an operator entry.
 -Cyan brackets (- -) if no value is defined and the operator can enter the data.
 -Amber boxes ( ) if no value is defined. Then the data entry is mandatory for the correct functioning of the system. Or for the achievement of the function described on the page or on the label line.
 -White dashes ( --- ) if the field is filled by the computer but not yet available. Due to lack of information or a computation has not yet been or a computation has no yet been achieved.
R 1EFF : 106-149, 211-299, 301-399, 401-499, 1 31-36-00Page A18 1 1 Config-2 Aug 01/05 1 1 1CES 1 The entry format of data is described by the number of boxes or the place occupied by the brackets, or the spaces between brackets. On one data line, several data may be displayed and entered : the different fields are separated by a slash ('/'). Each field may be entered separately; it is identified by the number of slashes in front of the entered data: e.g.: EQ/SYS/LAB/SDI to modify the label, the operator has to enter into the scratchpad : '//label'.

 (11)
 Clearing Messages Any message that is displayed can be cleared by activating the CLR key. Messages are automatically cleared under the following conditions:

 -
When data are entered into the scratchpad

 -
When LS or MODE key is activated

 -
When the reason is no longer valid.

 

 (12)
 Use of more than one MCDU at the same Time The FDIMU communicates with one MCDU only at the same time. If MCDU communication is requested from any of these MCDU's while communication is already active on another MCDU, the FDIMU responds with the message: "AIDS (TIMEOUT)". (Ref. Fig. 013)

 **ON A/C 151-199, 201-210,
 D. MCDU Functions and Rules
 (Ref. Fig. 012A)
 Some of the AIDS functions may be controlled via the MCDU.
　
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