VERFAHREN UND AUSRÜSTUNG ZUR REDUZIERUNG VON PHASENSPRÜNGEN BEIM UMSCHALTEN ZWISCHEN SYNKRONISATIONSQUELLEN

VERFAHREN UND AUSRÜSTUNG ZUR REDUZIERUNG VON PHASENSPRÜNGEN BEIM UMSCHALTEN ZWISCHEN SYNKRONISATIONSQUELLEN

A method and an arrangment for reducing phase jumps in a frame synchronization signal when switching between synchronization signal when switching between synchronization reference sources are disclosed. A new reference signal to which each of the two reference sources (signals) are phase locked, an...

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Hauptverfasser: WEGO, ARILD, HELLUM, PAL
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Sprache:ger
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AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
SELECTING
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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creator WEGO, ARILD
HELLUM, PAL
description A method and an arrangment for reducing phase jumps in a frame synchronization signal when switching between synchronization signal when switching between synchronization reference sources are disclosed. A new reference signal to which each of the two reference sources (signals) are phase locked, and has frequency n times the respective reference signal, is generated. A selection signal selects the new reference signal to be used, and the selected one is then divided back to its original frequency creating an input signal to a phase-locked loop generating the resulting frame synchronization signal. In this way, the maximum phase jumps are reduced from one period of the original reference signals to one period of the new reference signal. The invention is particularly applicable for reducing phase jumps on a master frame synchronization signal in a PDH system.
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subjects AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
SELECTING
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
title VERFAHREN UND AUSRÜSTUNG ZUR REDUZIERUNG VON PHASENSPRÜNGEN BEIM UMSCHALTEN ZWISCHEN SYNKRONISATIONSQUELLEN
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