Author Topic: Oscilloscope training class (long)  (Read 607472 times)

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Offline DSE_Kid

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Re: Oscilloscope training class (long)
« Reply #200 on: May 06, 2020, 10:23:43 am »
Brilliant stuff!  :-+
 
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Offline K5_489

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Re: Oscilloscope training class (long)
« Reply #201 on: August 23, 2020, 03:25:26 am »
Wow...I'm 40 years old now, have been on the internet for over 20 years, and this is, seriously, the very first time I've signed up for a forum with a specific question/need in mind which was actually answered by an easily found sticky post.  Well, at least I assume it will be..just registered a few minutes ago, and haven't yet watched the video, but based on the contents list, I believe it either will be or will at least get me much closer to an answer.  Specifically questioning what a large impedance mismatch between 'scope probe and 'scope input will mean.  I have a Tek 222PS 'scope with a 333.3K input impedance, the proper probes have long since become unobtanium, but I have a bunch of 1M impedance probes on the bench. 

I'm definitely looking forward to finding some time to watch the video here :) 
 

Offline L/C/R Putzer

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Re: Oscilloscope training class (long)
« Reply #202 on: September 07, 2020, 03:56:48 am »
I read that Tektronix probes have a designed center conductor that is not a straight wire, but may have twists and bends for probe compensation. Besides the compensation adjustment.
I am an all around good-guy!!
 

Offline Figaro

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Re: Oscilloscope training class (long)
« Reply #203 on: October 25, 2020, 12:33:40 pm »
w2aew Alan Wolke, best teacher ever, professtional video's, Detailed , Every word to the point (all being said in short time)
Clear langauge (important for those whom English is not thier mother language), Nice pleasend quite voice, No ego ! Please if you meet him at the club, tell him this.
 
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Offline casterle

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Re: Oscilloscope training class (long)
« Reply #204 on: December 20, 2020, 06:10:08 pm »
Armin - if you are interested in analog troubleshooting, I would highly recommend the "Troubleshooting Analog Circuits" book by Robert A. Pease.  Bob Pease just recently was killed, a tremendous loss to the Analog Design community.  Thankfully, he was a prolific writer, with a regular column (Pease Porridge) in the Electronic Design magazine.
I'm an old guy just getting started in analog - I hadn't heard of Mr. Pease before, so thank you for the introduction to this remarkable man.

Here's a link to a large collection of his writings:http://doc.xdevs.com/doc/_Lab/
 

Offline Mace_Hacker

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Re: Oscilloscope training class (long)
« Reply #205 on: March 04, 2021, 04:42:37 pm »
Thank you!!
 

Offline rpiloverbd

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Re: Oscilloscope training class (long)
« Reply #206 on: February 12, 2022, 12:27:22 pm »
Wish it was available during my University days....
 

Offline furnacemike

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Re: Oscilloscope training class (long)
« Reply #207 on: May 16, 2022, 03:26:47 am »
Very cool! I have to watch this video! I'm kind of new in electronics and Oscilloscopes are a little intimidating. I actually bought a Hantek DSO5072P last year but I still haven't gotten to try it out yet.
Mike
 

Offline armandine2

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Re: Oscilloscope training class (long)
« Reply #208 on: July 30, 2022, 10:41:38 am »
I have just dipped my toe in today with some practical scope training, by the arrival of my first digital bench oscilloscope.

A bit of queasy purchase, as getting the right price point,  brand, and model as a beginner is not without risk of disappointment.

At the moment though I'm happy enough with my decision of GW Instek MDO-2302A.

picture shows a ringing trace from my Keysight AWG at 4V pk-pk 2kHz square wave input.


The Private Papers of Henry Ryecroft, ... Principles always become a matter of vehement discussion when practice is at ebb.
 

Offline w2aew

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Re: Oscilloscope training class (long)
« Reply #209 on: August 02, 2022, 03:26:43 pm »
Congrats!  Ringing mostly due to the test lead inductance and unterminated output.
YouTube channel: https://www.youtube.com/w2aew
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Technical Coordinator for the ARRL Northern NJ Section
 

Offline armandine2

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Re: Oscilloscope training class (long)
« Reply #210 on: August 02, 2022, 04:35:12 pm »
Thanks for the pointer

How much is a measurement artefact and how much is the signal must be a recurring issue with analogue, I guess.

Ed.
Have just checked the original photo - 50ns per division

looks like a good excuse to do a calculation

Ed.
and of course ringing goes away with a bnc-to-bnc cable
« Last Edit: August 02, 2022, 07:15:39 pm by armandine2 »
The Private Papers of Henry Ryecroft, ... Principles always become a matter of vehement discussion when practice is at ebb.
 

Offline w2aew

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Re: Oscilloscope training class (long)
« Reply #211 on: August 03, 2022, 02:50:56 pm »
...and you've learned a valuable lesson on the detrimental effects of test lead (and ground lead) inductance. 

This video has some additional detail and examples:
https://youtu.be/zodpCuxwn_o
YouTube channel: https://www.youtube.com/w2aew
FAE for Tektronix
Technical Coordinator for the ARRL Northern NJ Section
 
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Offline armandine2

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Re: Oscilloscope training class (long)
« Reply #212 on: August 03, 2022, 04:25:09 pm »
yes, I kinda knew the good  and poor probe techniques before and I kinda knew that equipment doesn't always produce great square waves. Definitely a learning point in the degree of those two, for me.
The Private Papers of Henry Ryecroft, ... Principles always become a matter of vehement discussion when practice is at ebb.
 


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