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m Disambiguate Signal to Signalling (telecommunication) using popups |
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'''Signal transition''': In the [[modulation]] of a [[carrier wave|carrier]], a change from one [[significant condition]] to another.
''Note 1:'' Examples of [[Signalling (telecommunication)|signal]] transitions are a change from one electrical current, voltage, or [[Power (physics)|power]] level to another; a change from one optical power level to another; a [[phase shift]]; or a change from one [[frequency]] or [[wavelength]] to another.
''Note 2:'' Signal transitions are used to create signals that represent [[information]], such as "0" and "1" or "[[mark frequency|mark]]" and "[[space frequency|space]]."
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