Data acquisition concentrator

  • What is a system data acquisition concentrator?

    The SDAC receives signals from peripheral computers aboard the aircraft that have detected systems abnormalities or malfunctions..

  • What is FWC in a320?

    The Flight Warning Computer (FWC) presents failures and status information on the upper and lower ECAM display units.
    It guides pilots on actions to take for specific failures (cf “ECAM Actions”) and presents the relevant system pages for the specific failures..

  • What is the SDAC in aircraft?

    The SDAC receives signals from peripheral computers aboard the aircraft that have detected systems abnormalities or malfunctions.
    The SDAC measures the indicated malfunction against guidelines programmed into its memory and determines the severity..

  • The System Data Acquisition Concentrators (SDACs) receive various signals from the aircraft systems and send them to the FWCs and to the DMCs.
The SDAC measures the indicated malfunction against guidelines programmed into its memory and determines the severity. The SDAC then transmits signals 

How does the Airbus A320 system data acquisition concentrator (SDAC) work?

On the Airbus A320 the System Data Acquisition Concentrators (SDAC) aquire system data, process it and sends system page data to the three Display Management Computers (DMC).
The DMC process the data and generate an image.
Is this for the PFD and ND only.
Or does the DMC also generate the image for the upper and lower ECAM too? .

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What is a data acquisition system?

Data acquisition systems are principally in the business of measuring physical phenomena such as:

  1. Note that there are several other measurands
  2. including :
  3. light and images
  4. sound
  5. mass
  6. position
  7. speed
  8. etc
that can be measured by the data acquisition system.
Check out Dewesoft digital data acquisition systems.
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Where are data concentrators located?

The data concentrators are all situated in physically secure locations such as:

  1. substations or transformer stations operated by the utility

The headend system is located at the utility and comprises a proprietary manufacturer software implementation that is executed on an off-the-shelf server system.
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Why do SDACS supply all 3 DMCs?

A320:

  1. Why do SDACs supply all three DMCs.
    On the Airbus A320
  2. in the Electronic Instrument System (EIS)
  3. there are three Display Management Computers (DMCs):
  4. 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.

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