Analyzing Wavef
orms
When the phase spectrum is a continuous function of frequency, group delay may be computed. This is true of impulse
response testi
ng where an impulse is fed into the system, and the spectrum of the response of the system output is computed.
Group delay mea
sures how well a system passes a signal in terms of phase distortion. Group delay is the derivative of
the phase with respect to frequency. This feature is not useful for analysis of harmonic content of signals where the phase
response is not continuous.
Using Spectra
lAnalysis
Use the following procedure for predefined spectral math expressions.
1. Select Math > Math Setup....
2. Choose one of the predefined spectral
math expressions.
60 TDS6000B & TDS6000C Series Quick Start User Manual
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