On the Airbus A320, in the EIS System there are three computer called DMCs. DMC1 supplies the upper ECAM and DMC2 supplies the lower ECAM and DMC3 is a backup. There is a lot more but i will try to keep it simple. There are also two SADACs that acquire system status, process it, and and send system page data to the three DMCs. That's what i don't understand, why would it send it to all the DMCs, because lets say the Hydraulics system. The Hydraulic systems is displayed only on the lower ECAM which is supplied by the DMC2. So why would it send it to DMC1 if it only supplies the upper ECAM. Nothing about the hydraulic system is shown on the upper ECAM. I can understand why it would send it to the DMC3 because its a backup but why the DMC1 same thing for the Air Conditioning System, Electrical System, etc. non of those system are displayed on the upper ECAM which is supplied by DMC1. The only thing displayed on the upper ECAM is engine and MEMO (or emergency stuff in the case of an emergency), i guess the engine is a system but there is an engine system on the lower ECAM as well.The upper ECAM shows the engine performance and the lower shows the oil, so not the same thing. Help?

On the Airbus A320, in the Electronic Instrument System (EIS), there are three Display Management Computers (DMCs):

• DMC1 supplies the upper ECAM
• DMC2 supplies the lower ECAM
• DMC3 is a backup.

There are also two System Data Acquisition Concentrators (SDACs) that acquire system status, process it, and and send system page data to the three DMCs.

Why would it send it to all the DMCs?

The Hydraulic System is displayed only on the lower ECAM which is supplied by the DMC2. Nothing about the hydraulic system is shown on the upper ECAM supplied by the DMC1. So why would SDACs send data to DMC1? I can understand why it would send it to the DMC3 because its a backup but why the DMC1?

Same thing for the Air Conditioning System, Electrical System, etc. None of those systems are displayed on the upper ECAM supplied by DMC1. The only thing displayed on the upper ECAM is engine and MEMO (or emergency stuff in the case of an emergency).

I guess the engine is a system but there is an engine system on the lower ECAM as well. The upper ECAM shows the engine performance and the lower shows the oil, so not the same thing.

On the Airbus A320, in the EIS System there are three computer called DMCs. DMC1 supplies the upper ECAM and DMC2 supplies the lower ECAM and DMC3 is a backup. There is a lot more but i will try to keep it simple. There are also two SADACs who acquire system status, process it, and and send system page data the the three DMCs. That's what i don't understand, why would it send it to all the DMCs, because lets say the Hydraulics system. The Hydraulic systems is displayed on the lower ECAM which is supplied by the DMC2. So why would it send it to DMC1 if it only supplies the upper ECAM. Nothing about the hydraulic system is shown on the upper ECAM. I can understand why it would send it to the DMC3 because its a backup but why the DMC1 same thing for the Air Conditioning System, Electrical System, etc. non of those system are displayed on the upper ECAM. The only thing displayed on the upper ECAM is engine and MEMO, i guess the engine is a system but there is an engine system on the lower ECAM as well. Help?

On the Airbus A320, in the EIS System there are three computer called DMCs. DMC1 supplies the upper ECAM and DMC2 supplies the lower ECAM and DMC3 is a backup. There is a lot more but i will try to keep it simple. There are also two SADACs that acquire system status, process it, and and send system page data to the three DMCs. That's what i don't understand, why would it send it to all the DMCs, because lets say the Hydraulics system. The Hydraulic systems is displayed only on the lower ECAM which is supplied by the DMC2. So why would it send it to DMC1 if it only supplies the upper ECAM. Nothing about the hydraulic system is shown on the upper ECAM. I can understand why it would send it to the DMC3 because its a backup but why the DMC1 same thing for the Air Conditioning System, Electrical System, etc. non of those system are displayed on the upper ECAM which is supplied by DMC1. The only thing displayed on the upper ECAM is engine and MEMO (or emergency stuff in the case of an emergency), i guess the engine is a system but there is an engine system on the lower ECAM as well.The upper ECAM shows the engine performance and the lower shows the oil, so not the same thing. Help?