when to use different type of test signals?
when to use different type of test signals?
(OP)
most common test signals that are used as inputs to physical systems under test, or to simulated systems. The following signals are offered:
-Pulse
-Step
-Ramp
-Sinus
When do you use the different testsignals??
-Pulse
-Step
-Ramp
-Sinus
When do you use the different testsignals??





RE: when to use different type of test signals?
Pulse: In TDR applications to look for discontinuities in cables. http://w
Step: Always to check step response and stability margin in systems. Advantage is that a step signal is extremely easy to generate and that there are standardized evaluation methods.
Ramp: Not so often. Sometimes used to check that all drives in a drive system (paper machine for instance) follow with same delay so that draw between sections remains constant.
Sinus (sine for UK/US): General use when checking frequency response (gain and phase angle). Bode plot.
The unit pulse (Dirac pulse) is often used by acoustic engineers to check room properties.
Noise (white): Very useful when doing quick checks to see if a transmission component is free from resonance and has adequate band-width. I use that to check broadband transformers and such components.
Gunnar Englund
www.gke.org
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