ENGINE Page - Display of the Parameter: OIL TEMPERATURE
 Figure 006

R 1EFF : 106-149, 303-399, 401-499, 1 31-67-77Page 14 1 1 Aug 01/05 1 1 1CES 1R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,

 (Ref. Fig. 007)
 **ON A/C ALL
 The oil temperature digital indication is:
 (1)
 Case 1
 green (steady) in normal operation

 (2)
 Case 2 green and pulses if the temperature exceeds 140.C (High oil temperature advisory)

 (3)
 Case 3
 amber (steady) if the temperature exceeds 155.C.

 (4)
 Case 4 When the parameter is received as not valid by the DMC, the value is replaced by amber XX. The display can vary from -95.C to +510.C in 5.C steps.

R 1EFF : ALL 1 31-67-77Page 15 1 1 May 01/05 1 1 1CES 1

 ENGINE Page - Display of the Parameter: OIL TEMPERATURE
 Figure 007

R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 31-67-77Page 16 1201-299, 301-302, 1May 01/05 1 1 1CES 1 EIS - SWITCHING - DESCRIPTION AND OPERATION

___________________________________________
 1. General_______ (Ref. Fig. 001) Various reconfiguration possibilities are provided in the Electronic Instrument System (EIS) in order to cope with the operational requirements below in case of failure of a Display Management Computer (DMC), a Display Unit (DU) or a Control Panel (EFIS control section of the Flight Control Unit (FCU) or ECAM Control Panel) :
 -DMC transfer : EIS DMC 1/3 or 2/3 (DMC 3 replacing DMC 1 or 2)
 -PFD-ND transfer
 -ECAM DU transfer : upper DU to lower DU
 -ECAM-ND transfer : ECAM/CAPT ND or ECAM/F/O ND.
 2. Links Between DMCs and DUs__________________________
 The PFD, ND, ECAM processing channels of a DMC drive their associated DUs through a switching stage and via dedicated links called Master DSDL (Dedicated Serial Data Link).
 The Master DSDL conveys instructions and data.
 In certain conditions, programs are teleloaded from the DMCs to the DUs via this DSDL.
 More particularly, this teleloading operation takes place at DMC initialization (electrical power on setting) if the program stored in the EPROM of the DUs does not match the operational program stored in the DMC memory modules.
 Another kind of teleloading process takes place from the DMC to the
 dedicated RAMs of the ECAM DU at each change of aircraft system image.

 The DUs are all versatile, i.e. each DU is able to display any of the EIS or ECAM images. (However, the ECAM DU cannot display PFD/ND images).
 In normal operation, the DMC 1 drives the CAPT PFD, the CAPT ND and the upper ECAM DU through their normal input N. The DMC 2 drives the F/O PFD, the F/O ND and the lower ECAM DU also through their normal input N (the DMC 3 is in standby, ready to take over from the DMC 1 or 2 in case of failure).
 In fact, each DU has two inputs for receiving the digital signals from the DMC dedicated buses (master DSDL), one normal input N and one alternate input A (This alternate input is used in some reconfiguration cases following transfer control as explained in the paragraph concerning DU failures).
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 31-68-00Page 1 1201-299, 301-302, 1Config-1 May 01/05 1 1 1CES 1

 EFIS/ECAM Reconfigurations Between DMCs and
 Between DUs
 Figure 001

R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 31-68-00Page 2 1201-299, 301-302, 1Config-1 May 01/05 1 1 1CES 1 In turn, each DU sends to its driving DMC digital signals through a dedicated bus which is called feedback DSDL. Through this feedback link, the DUs acknowledge proper reception of the DSDL master signals, and also inform the DMC of their detected failures, so that the DMC can make the proper action (for instance, automatic transfer of a PFD image on an ND in case of detected failure of the PFD).

 NOTE : The connections between the DMC 3 and the DUs are crosswired for the
____ PFD and ND, in order to cope with a possible wire cut-off of the connection which delivers the PFD information. In this case, when the DMC 3 supplies the PFD and the ND on one side, CAPT or F/O, the DMC 3 signals enter the PFD and the ND via their alternate inputs. The activation of the DU alternate inputs and the deactivation of the normal inputs is made by grounding a discrete input on the DU connector. This is achieved by an A/C circuitry which takes into account all the conditions leading to the change of inputs (normal or alternate).
 NOTE : All of the DMCs and DUs know their position aboard the A/C by A/C
____
 wiring : straps connected or not connected.
　
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