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The remaining parameters then can be installed according to a scheme defined by a specified pattern. The subframes then are the subdivisions of this frame.

As a rule a whole 25 hours of the life time of an aircraft are recorded and stored. However, when the voltage value is at logical ONE, this value is converted during the bit width. As such, with regard to low security, the deficiencies of the precursor model have been eliminated thanks to the ARINC and data can now be recorded in real-time, so that meaningful results are available to aviation and there is an option for epecification development to a higher level.

The digital flight data acquisition unit buffers the data, thus converting them to frames and subframes. The subframes also always differ in their first parameter, which is used for the purpose of identification. The collected data includes information concerning the condition of the devices.

Often, the plug-in location is not sufficient as identification, so that a table must be used for decoding. In comparison, parameters must always be recorded for an aircraft in the United States of America, and in the case of the Airbus A, the largest commercial aircraft that produced in serial production, one recording is made up of parameters.

Known of in the field of aeronautics for some while, the ARINC protocols are a means that can be deployed in many ways. Starting phase of the ARINC — after installing the digital flight data acquisition unit, this unit receives information from the different components in the aircraft. This makes it possible to determine an element just by its position in the frame, and the parameters can transmit data in their specificatlon order without interruptions and separations.

This data bundle then reaches the Soecification only. Each individual fraction is verified via an 8-bit identifier and additionally, it also contains a payload between 18 bits and 19 bits. Each individual parameter of the set to be transmitted holds 12 bits of stored payload.

This value can be obtained over the entire bit width. This data can also provide information regarding the altitude, the current and average velocity and the position of the rudder. In former times, when ARINC was not yet on the market, aircraft mostly recorded only up to 64 parameters, but since the introduction of the digital flight recorders, the average is parameters. At this point of the ARINC protocol, the bits which regulate identification and synchronization are no longer needed, as the subframes spwcification have the same construction.

Afterwards this process can start again. Here, the DFDAU assumes the position of the computer and the transmission point, as the different data are collected, combined, and transformed into the format of the ARINC protocol on these system components. A frame has a arijc of four subframes, which are then assigned each second of the four seconds of recorded life time. A recording of four seconds of the life soecification an aircraft is called a frame. With this, a procedure is used for coding as a basis.

However, the ARINC is characterised as arinx significant point in this development, starting from which, the standard has been raised and optimized many times over. Most 10 Related.



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