Measure Cable Length with an Oscilloscope

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Today we take a crack at measuring some coax cable using TDR on an oscilloscope with the help of a pulse generator. Cable length can be calculated by sending a pulse down a cable and measuring how long it takes for the pulse to return.
If you don't have a pulse generator, here are a couple of cool little circuits from fellow RU-vidrs:
Mr. Carlson's Lab TDR: • "TDR" or Time Domain R...
W2AEW TDR circuit: • #88: Cheap and simple ...
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www.thecurrentsource.com

Опубликовано:

15 окт 2024

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Комментарии : 14

@fullwaverecked 3 года назад

Or TDS. Great video! Always dig the way you explain complicated concepts, you always crush it! Cheers!

@electronicengineer 3 года назад

This man just explained an extremely complex measurement setup and executed it in such a clear and concise way, that anyone can understand and grasp it! I wish that I would have had the opportunity to have you as my professor in college. BRAVO sir!! Fred

@AmRadPodcast 3 года назад

Thanks!

@electronicengineer 3 года назад

@@AmRadPodcast You are most welcome as it is the truth. Fred

@acestudioscouk-Ace-G0ACE 3 года назад

Thanks for making this video, very interesting and useful.

@jamesdriscoll9405 3 года назад

Always remember, a portion of your transmission will be reflected back to you.

@BaconbuttywithCheese 3 года назад

Very well presented and explained. More to dig into!

$@ehsfrac$

@ehsfrac 3 года назад

Very interesting! Excellent explanations!

@TonyBarr99 3 года назад

Thank you! Great as always. How can something so technical sounding as Time Domain Reflectometry be so darn easy to understand? Of course, when explained by a great teacher! It is so fascinating to know that I have the equipment in my home lab to measure the speed of light!

@FEPLabsRadio 2 года назад

Great video Derek. I need to go back and look at mine again. If I remember, I didn't have the same wave form. Also, I didn't have a pulse gen at the time, and that might have been the difference. Hopefully, I did math right, it is a pretty simple formula.

@AmRadPodcast 2 года назад

In your case the return signal is stacked (summed) on top of the initial signal, which is still ongoing. In my case, the pulse generator goes hi/low before the return pulse, so you see two individual blips.