Author Topic: Oscilloscope training class (long)  (Read 625527 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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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.
 

Offline LOTO instruments

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Re: Oscilloscope training class (long)
« Reply #213 on: February 01, 2023, 01:49:09 am »
Thumbs up!
LOTO focuses on virtual oscilloscopes, we strengthen software and streamline hardware to develop oscilloscope and peripheral modules. Powerful software and rich scalability of hardware are the customer values we continue to pursue.
 


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