×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

when to use different type of test signals?

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??
 

RE: when to use different type of test signals?

That differs a lot. In my world (drives, control, general electric engineering) it is like this:

Pulse: In TDR applications to look for discontinuities in cables. http://www.gke.org/pub/files/Cable%20Radar%20Electronic%20Design.pdf

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
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources