Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Terminators / Impedance Matching

  1. Dec 18, 2008 #1
    I am not sure how the use of a terminator with an oscilloscope works.

    I have a signal going into the input of an oscilloscope and improved this signal by attaching a terminator to the input of the scope.

    The way I understand it is, that the scope has a large impedance, larger than the impedance of the source and so a voltage results which can't be overcome by the signal, so not all of the energy of the signal is absorbed; some is absorbed which results in signal being reflected back and so original signal becomes distorted.

    Can you explain if this scope is in fact a 'load' -- if it isn't, then I just have a source with an impedance and an open end (zero impedance?) and all of the signal is going to be reflected: then how is anything going to be detected?


    (p.s. i wouldn't have thought this is really an homework question)
    Last edited: Dec 18, 2008
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you help with the solution or looking for help too?
Draft saved Draft deleted

Similar Discussions: Terminators / Impedance Matching
  1. Impedence matching (Replies: 1)

  2. Lighting a match (Replies: 1)