(1) Test of the engine red lines exceedances The DMC connected to the upper ECAM DU monitors primary parameter indications of both engines. The maximum values (red lines) of the N1, N2 AND EGT parameters are written in the BITE according to the type of engine installed on the aircraft.
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EIS LRU IDENTIFICATION Display
Figure 058
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DUMP OF THE BITE MEMORY
Figure 059
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INTERNAL & EXTERNAL FAULTS IN FLT Menus
Figure 060 (SHEET 1)
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INTERNAL & EXTERNAL FAULTS IN FLT Menus
Figure 060 (SHEET 2)
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FAULTS ON GND
Figure 061
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MAIN EIS MENU Display
Figure 062
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(2) EIS confidence checks The TEST function (4R) on the EIS menu displays the EIS TEST page which present three different tests. (Ref. Fig. 064)
-System Test Operation The SYSTEM TEST performs all the DMC self-tests and checks the computer operation. when the line key adjacent to the SYSTEM TEST indication is pushed, a SYSTEM TEST/PROCEDURE page comes into view and shows indications for test preparation. The RETURN function (6L) is used to select a second page which enables the test to be initiated through the line key adjacent to the START TEST indication (5L). (Ref. Fig. 065) When the test is initiated, the DMC leaves the maintenance mode and records, in the BITE, any occurring failure until the EIS TEST page is selected in order to activate the SYSTEM TEST RESULT function (4L).This action displays the SYSTEM TEST RESULT page to show the results of the test or the TEST OK indication. (Ref. Fig. 065)
-Input test operation (Ref. Fig. 066) During 5 s, the DMC scans all its ONSIDE buses, i.e. it checks that each bus sends labels with their correct refresh rate. During the next 5 s, the DMC scans all its OFFSIDE buses. At the end of this test, the DMC signals all the buses seen as faulty for display on the I/P TEST RESULTS display.
-Display Test (Ref. Fig. 067) When a Display test is selected for a given DMC, the 3 DUs connected to this DMC display a test pattern showing the fundamental colors and geometrical outlines (lines, circles...).
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ENGINES OVERSPD/TEMP Test
Figure 063
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TESTS Menu Figure 064
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SYSTEM Test Figure 065
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INPUT TEST Operation
Figure 066
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DISPLAY TEST Figure 067
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R **ON A/C ALL
D. Configuration of a DMC and its Associated DUs in the Menu Mode
(1)
Display on the DUs connected to a DMC in the maintenance mode As long as a given DMC is in the maintenance mode operation, the DUs connected to this DMC display: MAINTENANCE MODE in green color, instead of the normal operational displays.
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