LeCroy 93XXC-OM-E21 free download

File name 93XXC-OM-E21.PDF

& $SSHQGL[ & )DVW )RXULHU 7UDQVIRUP ))7 :KHQ DQG +RZ WR 8VH ))7 The WP02 Spectral Analysis package, with FFT (Fast Fourier Transform), reveals signal characteristics not visible in the time domain and adds the power of frequency domain analysis to your oscilloscope. FFT converts a time domain waveform into frequency domain spectra similar to those of a spectrum analyzer, but with important differences and added benefits. :K\ 8VH ))7" For a large class of signals, greater insight can be gained by looking at spectral representation rather than time description. Signals encountered in the frequency response of amplifiers, oscillator phase noise and those in mechanical vibration analysis -- to mention just some applications -- are easier to observe in the frequency domain. If sampling is done at a rate fast enough to faithfully approximate the original waveform (usually five times the highest frequency component in the signal), the resulting discrete data series will uniquely describe the analog signal. This is of particular value when dealing with transient signals because, unlike FFT, conventional swept spectrum analyzers cannot handle them. 7KHRU\ %HKLQG ))7 Spectral analysis theory assumes that the signal for transformation be of infinite duration. Since no physical signal can meet this condition, a useful assumption for reconciling theory and practice is to view the signal as consisting of an infinite series of replica of itself. These replica are multiplied by a rectangular window (the display grid) that is zero outside of the observation grid.