Buy IEC Ed. Distribution automation using distribution line carrier systems Part 6: A-XDR encoding rule from SAI Global. IEC (), Distribution automation using distribution line carrier systems. Part 6: A-XDR encoding rule: Defines a set of encoding rules that may be. Purchase your copy of BS EN , IEC as a PDF download or hard copy directly from the official BSI Shop. All BSI.
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Please download Chrome or Firefox or view our browser tips. The first four bytes of each packet are a preamble to measure the channel’s current condition. The high reliability comes from its reliable timing system i. S-FSK spread frequency-shift keying is ic modulation scheme that combines some of the advantages of classical spread-spectrum modulation immunity against narrow-band interference with some of the advantages of classical frequency-shift keying FSK is low complexity.
Wide area networks Networking standards. The system should be able to adjust the receiving method on each byte packet. The frequencies are placed far enough apart that frequency-selective fading and narrow-band interference only blocks one of the frequencies, so the receiver can still recover all the data from the other frequency. The data from zero crossings should 6133-46 collected into 8-bit bytes. One tone is chosen 6334-6 mark i. A-XDR encoding rule Status: Related standards use the physical layer e.
Depending on the signal to noise ratios, the bits can be recovered from the difference between the power of the mark and space tones, the power of the mark tones only, or the space tones only. Find Similar Items This product falls into the following categories. Learn more ied the cookies we use and how to change your settings. The physical layer synchronizes a small 6133-6 of tones to the zero-crossing of the power line’s voltage.
The most significant bits are sent first, unlike a conventional serial port. Your basket is empty. The tones are chosen by utilities, not specified in the standard. This is followed by 38 bytes of data, and 3 byte-times of silence. Accept and continue Learn more about the cookies we use and how to change your settings. It is actually a series of standards describing the 6134-6 physical environment of power lines, a well-adapted physical layer, a workable low-power media access layer, and a management interface.
Take the smart route to manage medical device compliance. The standard permits each zero-crossing to convey 1, 2, 4 or 8 bits, with increased sensitivity to timing as the number of bits increases. You may find similar items within these categories by selecting from the choices below:. This page was last edited on 30 Marchat For example, it lets a central controller read a unit’s signal to noise ratios, and set the bit that enables a station to retransmit weak stations.
Click to learn more. Retrieved from ” https: Each byte is collected into byte packets. Verteilungsautomatisierung mit Hilfe von Traegersystemen auf Verteilungsleitungen.
From Wikipedia, the free encyclopedia.
IECknown as Distribution automation using distribution line carrier systemsis a standard for low-speed reliable power line communications by electricity meterswater meters and SCADA.
BS EN 61334-6:2001, IEC 61334-6:2000
The faster, easier way to work with standards. Search all products by. You may experience issues viewing this site in Internet Explorer 9, 10 or In multiphase power lines, a separate signal might be sent on each phase to speed up the transmission.