A320飞机维护手册 AMM 指示/记录系统 7(60)

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 As long as an A/C system key or the STS key is held pressed, the corresponding page appears on the ND instead of the E/W image, but precautions are taken against the jamming of the key: after 30s, the DU automatically displays the E/W image again.
 1EFF : 106-149, 303-399, 1 31-60-00Page 91 1 1 Config-3 Aug 01/05 1 1 1CES 1 As soon as the pilot releases the key, the E/W image appears again. In case of complete failure of the ECAM CP, the ALL key enables the crew to select any A/C system page by means of successive actions on this key. In fact, the contacts of the ALL key are directly wired to the DMC for that purpose.

 (d) ECAM-ND transfer By means of the ECAM/ND XFR selector switch, each pilot can call on his ND an ECAM image (normally A/C system or status image, or Engine/ Warning image if both ECAM DUs are inoperative) instead of the ND image. Obviously, the pilots can at any time get their ND image back if they set the selector switch back to NORM.
 (3) Transmission between DMCs and DUs The transmission of data from the DMCs to the DUs (tele-loading of the drawing programs, and sending of the so-called dynamic data) is made through a digital bus. If a DU is selected for a different image (for instance, the ND having to display an ECAM image), the time delay before obtaining the new image, due to the tele-loading of the new image fixed data, does not exceed 500 ms. The DUs acknowledge proper reception of fixed and dynamic data and send to the DMCs through a digital bus (feedback link):
 -status reports on the tele-loading
 -the drawing of the image
 -information concerning the status and the proper operation of the DU itself (for instance, DU beam, DU temp, DU anomaly informations).
 (Ref. Fig. 046)
 (4) Presentation of the various ECAM display configurations Table 4 gives the various possible ECAM display configurations according to the availability of the ECAM processing channels in the DMCs and the ECAM DUs. The list is not exhaustive. Each DMC ECAM channel can operate in either E/W mode, or S mode, or M (Mono) mode. When an ECAM DU must be supplied with DMC ECAM data through its alternate input, the DMC elaborates a control discrete signal which goes directly to both ECAM DUs to activate their alternate inputs. The two ECAM DUs always use their Normal or their Alternate input simultaneously.
 1EFF : 106-149, 303-399, 1 31-60-00Page 92 1 1 Config-3 Aug 01/05 1 1 1CES 1

 TABLE 4

 -------------------------------------------------------------------------------| | | | DISPATCHING OF ECAM IMAGES : | |CASE| DMC 1,2,3 | Crew | DU inputs ((N or A)), Source DMC and ECAM | | N. | condition | Transfer | processor operating mode (E/W, S, Mono) | | | | Selections |----------------------------------------------| | | | | ND 1 | ECAM 1 DU | ECAM 2 DU | ND 2 | |----|------------|------------|----------|-----------|-----------|-----------| | 1 | NORM | NORM | ND | E/W ((N)) | S ((N)) | ND | | | | | | (DMC 1 | (DMC 2 in | | | | | | | in E/W) | S) | | |----|------------|------------|----------|-----------|-----------|-----------| | 2 | NORM |ECAM/ND F/O | ND | E/W ((N)) | / | S ((N)) | | | | | | (DMC 1 |(diagonal) | (DMC 2 | | | | | | in E/W) | | in S) | |----|------------|------------|----------|-----------|-----------|-----------| | 3 | NORM |ECAM/ND CAPT| S ((N)) | / | E/W ((N)) | ND | | | | | (DMC 1 | (diagonal)| (DMC 2 | | | | | | in S) | | in E/W | | |----|------------|------------|----------|-----------|-----------|-----------| | 4 |DMC 1 failed| NORM | / | / | E/W ((N)) | ND | | | | |(diagonal | | (DMC 2 | | | | | | line) | | in M) | | |----|------------|------------|----------|-----------|-----------|-----------| | 5 |DMC 2 failed| NORM | ND | E/W ((N)) | / | / | | | | | | (DMC 1 | | | | | | | | in M ) | | | |----|------------|------------|----------|-----------|-----------|-----------| | 6 | NORM | NORM | ND | X | | | | | | | |(DU failed)| E/W ((N)) | ND | | | | | | | (DMC 2 | | | | | | | | in M) | | |----|------------|------------|----------|-----------|-----------|-----------| | 7 | NORM |ECAM/ND F/O | ND | X | E/W ((A)) | S ((N)) | | | | | |(DU failed)| (DMC 1 | (DMC 2 | | | | | | | in E/W) | in S) | |----|------------|------------|----------|-----------|-----------|-----------| | 8 | NORM |ECAM/ND CAPT| S ((N)) | X | E/W ((N)) | ND | | | | | (DMC 1 |(DU failed)| (DMC 2 | | | | | | in S) | | in E/W) | | |----|------------|------------|----------|-----------|-----------|-----------| | 9 | NORM | NORM | ND | E/W ((N)) | X | ND | | | | | | (DMC 1 |(DU failed)| | | | | | | in M) | | | |----|------------|------------|----------|-----------|-----------|-----------| | 10 | NORM |ECAM/ND F/O | ND | E/W ((N)) | X | S ((N)) |
 1EFF : 106-149, 303-399, 1 31-60-00Page 93 1 1 Config-3 Aug 01/05 1 1 1CES 1 -------------------------------------------------------------------------------| | | | DISPATCHING OF ECAM IMAGES : | |CASE| DMC 1,2,3 | Crew | DU inputs ((N or A)), Source DMC and ECAM | | N. | condition | Transfer | processor operating mode (E/W, S, Mono) | | | | Selections |----------------------------------------------| | | | | ND 1 | ECAM 1 DU | ECAM 2 DU | ND 2 | |----|------------|------------|----------|-----------|-----------|-----------| | | | | | (DMC 1 |(DU failed)| (DMC 2 | | | | | | in E/W) | | in S) | |----|------------|------------|----------|-----------|-----------|-----------| | 11 | NORM |ECAM/ND CAPT| S ((N)) | E/W ((A)) | X | ND | | | | | (DMC 1 | (DMC 2 |(DU failed)| | | | | | in S) | in E/W) | | | |----|------------|------------|----------|-----------|-----------|-----------| | 12 | NORM |ECAM/ND F/O | ND | X | X | E/W ((N)) | | | | | |(DU failed)|(DU failed)| (DMC 2 | | | | | | | | in M) | |----|------------|------------|----------|-----------|-----------|-----------| | 13 | NORM |ECAM/ND CAPT| E/W ((N))| X | X | ND | | | | | (DMC 1 |(DU failed)|(DU failed)| | | | | | in M) | | | |
　
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