D.E.V.I.C.E. is an encyclopedia of terms used by manufacturers of test and measurement equipment. T&M Atlantic created this service to better explain the functionality of instruments it offers, and to highlight the latest developments in the world of measurement equipment. We are using such tools as animation to bring words and pictures to life and to create not just an understanding but also an appreciation for technology that goes into the design of every instrument.
D.E.V.I.C.E. on Request
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Pulse Width Modulation is pulse width changing. Period and amplitude are not changed.
The following picture demonstrates pulse width modulation where the rectangular pulse width of the carrier signal (yellow ray) takes on different values depending on the rising blade signal (blue ray) controlling the shift keying without any changes of their period and amplitude.