I tried it, but found the majority of students to be unprepared, undisciplined, and unwilling to learn what I was presenting. So I shifted to Middle School and found the students to be far more cooperative and responsive.
This video has been up for 6 years and the information you present is still pertinent. I have a digital and analog scopes. The digital scope performs all the calculations for me, a no brainer but I still prefer to use my Tektronix analog scope when doing audio work. I prefer the analog waveform over the digital waveform. To me it's like using a VTVM over a DMM when performing a radio alignment. Watching a needle move is much more useful then watching a bunch of changing numbers. Looking at an analog trace is so much nicer than a digital trace when performing audio tests. Learning to use an analog scope can be intimidating to a first time user but taking the time to learn it is very rewarding. Your series on Scope Basics is very useful and very easy to follow and is a goldmine for beginners. I urge new scope users to watch your "Isolation Transformer" video, the gained knowledge will prevent you from blowing up the front end of your scope or having the probe burn up in your hand. Thank You Uncle Doug.
I know this video has been up for a while, but I just bought my first scope. Thanks to your tremendous teaching abilities, I now understand it's usefulness and how to operate it correctly. Thank you, Uncle Doug!
This content should be put all together to form one of the clearest introductions to oscilloscope techniques. Gonna suggest It to my students! Thank you Doug!
Uncle Doug so clear and distinct brilliant tutorial. I don’t know if you have done a video of analogue scope calibration but if you have could you possibly direct me to it, many thanks and go safe..
I'd appreciate it if you re-wrote every technical manual ever printed. Your explanations are absolutely perfect and extremely easy to comprehend. Screw Netflix and Hulu, this is my favorite streaming channel.
Just spent 35 minutes on the phone to my insurance company, 30 minutes of which was spent listening to their stupid jingle jangle music. Then, up pops an email notification from Uncle Doug. Sanity and blood pressure now returned to normal, thank you Doug.
"There is nothing wrong with your television set. Do not attempt to adjust the picture. We are controlling transmission. If we wish to make it louder, we will bring up the volume. If we wish to make it softer, we will tune it to a whisper. We will control the horizontal. We will control the vertical. We can roll the image, make it flutter. We can change the focus to a soft blur, or sharpen it to crystal clarity." - Vic Perrin as The Control Voice of The Outer Limits. Sorry, I just had to. Very informative videos on scopes. Thank you for your time in making these.
Boy did i need this tutorial, perfectly explained for newbies like me. Thanks for taking the time to explain this complex topic to us. I would really appreciate the follow up turtorial where the occiloscope is used on. 1) Battery powered items 2) mainsTransformers, with and without shared common between primary and secondary 3) Isolation transformers 4) Mains powered items Like you say, there is so much hype, contradiction and waffle around on youtube its difficult to know what to believe. Thanks again J...
I' brazilian, i have a tek 2205GM since 1995, i bought it brand New. It's here, i'm fixing/replacing its potentiometers of position. Its aspect is perfect like a new one.
In 5 videos, the 2 on isolation transformers, Oscilloscope Basics 1 and 2, and the dim bulb current limiter, my understanding of my scope has really grown and my confidence level in using it has skyrocketed! Thank you so very much Uncle Doug! I'm between job opportunities just now but as soon as I'm back in the saddle, I'll become a patron! All the best - Luther
Two excellent videos on using the o-scope. My cat would come running when he heard me tearing up a newspaper. When you laid it down he would carefully tear it into strips.
Being a person that has a dozen scopes and use them daily, these types of basic tutorials are great refreshers. Really helps bring us all back to the basic of how to use these wonderful pieces of test gear. Thanks for the great videos as always Uncle Doug. I really enjoy them. BTW I have one of the all time favorite solid state Tektronix scope arriving tomorrow on UPS. Will be doing some videos on getting this classic back up and running and adding it to my collection.
Cool house take care uncle Doug. Watched most vids ys ago spent 2 yrs on rd. I really enjoy them. All things eternal are unseen. Rip Rusty. Cats a welcoming companions.
Cats are fun to watch. When they jump up onto something they first carefully survey the height and then proceed to calculate the exact amount of effort required to just barely clear the edge..... making sure to not over jump or expend any more energy than needed, and they rarely under jump. Doesn't matter if it is 10 inches or 4 ft. Thanks UD for this series. I have always wanted to learn how oscilloscopes work. Your method of presentation is always enjoyable. It is hard to misinterpret the information you provide due to your unique teaching approach.
Hey UD, also meant to mention publicly that I am really enjoying the Newcomb. You did a fantastic job with the conversion, not to mention it is practically brand new looking - inside and out. Heck, my wife even enjoys hearing me play for a change, lol.
These videos were immensely helpful. I bought a 2213 (very similar) because I knew I could learn to use it, thanks to your teachings. Bless you, Uncle Doug.
A very clear explanation. Uncle Doug, I wish that those fellas that print manuals for High tech stuff (especially Seimens and Rockwell) should have you layout the method of instruction in their manuals. After the new manuals cover their asses with all of their safety warnings and disclaimers. They usually start with the first items of explanation with the understanding that the reader knows nothing about the device the manual has been written for. Then, after about a page and a half of good basic explaining, the tone of the instruction becomes that of an explanation to somebody that already knows how the device operates and only needs to be technically tuned up to be able to understand how to install, calibrate, commission, and troubleshoot the device. A big jump in the way the information about the device is being presented. Your explanations have no such surprises in them and leave the instructee with a much clearer understanding of the subject by the end of the instruction. Why the big guys can't follow your example is beyond me.
Siemens and Rockwell... bet you're talking about PLCs and/or drives. That's the stuff I've worked on most of my life and I've concluded they write those manuals like that on purpose. That way they can sell you training to the tune of $500 or $1000 per day, slow paced training that keeps you buying more and more classes hoping to get to The Answers some day. Actually, if the manuals or training were any good I'd probably be out of a job. With good manuals, electricians and maintenance men everywhere would soon figure out that what I do (industrial control systems from scratch, plus troubleshooting and repair) is not magic at all. And yeah, Doug is an excellent teacher. Heck, I've been using scopes for ever and ever, but I still come here to enjoy how he presents things. His style reminds me of a math teacher bacm in middle school who quite literally changed the course of my life...
Thanks so much, Tony. What you describe is exactly what I try to avoid. There are millions of people anxious to learn all sorts of technical skills.....but sadly, they are let down by engineers who are either unable or unwilling to provide effective instruction. This is largely why I became a math and science teacher many years ago, and why I have now turned to TH-cam to continue trying to reach the masses with instruction that can be comprehended.......and not dreaded.
Thanks so much, Sooti. By coincidence, I chose middle school for my teaching career. It's the perfect time to shape students, before they become "hardened" in high school and college.
Thank you for another informative video. My cat is fond of finger picks. Everytime I play the pedal steel guitar, when I quit playing, she knows it is times to steal my picks.
Doug, I love hearing your gentle slow talking voice which explains things very clearly to me. I have to think hard about the math part with how many thousands of a second are the same as so many hundredths of a second etc. This has always never clicked with me. Mental block. But I will keep watching your fantastic videos. You make us WANT to learn and you don't overwhelm us with your cleverness. Thank you kind Sir. Ps...love the cat too. Pete
Thanks so much, Peter. Our goal is to convey useful information, rather than self-glorification, and it's good to hear that this approach is successful :)
Great series! Even I know how to use the oscilloscope it's fun to watch it. With this series every interested viewer is able to learn how to operate it. Thanks!
Another very informative video, very good explanations of the timebase function and triggering. Great demo with the signal generator too. I wish I would have had an instructor like you all of those years ago back at tech school. We had a cat “Katy” that loved to chew on those orange disposable fingernail files, sharpening her teeth as I always told my wife. Our dog “Heidi” comes running when she hears the freezer drawer open to get an ice cube.
So far this has been a great topic of videos! I have tried to watch other oscilloscope videos and they either confuse me, put me to sleep, or both.. Your explanation of this topic has inspired me to dig out my scope and use it. Thanks so much for all your efforts Doug . You are truly keeping this technology alive!
You're welcome, Aaron. I'm really glad to hear that my presentations are relatively understandable and not a substitute for Ambien :) It's our goal to present this information in an effective way.
I watched part one and two tonight, and they are both great videos. These are he best O-scope videos I've seen, and I watched a bunch. I just got my first scope, and am learning how to work it. I have a lot to learn, but your videos helped me a bunch. Thanks for sharing your knowledge.
Cant wait till part 3. Definitely interested in seeing this isolation transformer your building and learning more about using these as tools to evaluate and troubleshoot amplifier circuits!
Ken, you must have had something hold you up on this one. I noticed you were not first this time around. No shame in that.... Uncle Doug's videos are always worth the wait if necessary.
thx. yeah you can tell who leaves feedback from there phone by the empty boxes or an x in a box from the emoji's. yeah gotta get the doug n jack info anyway you can. even the small phone screen works in a pinch! :-)
Not to change the subject...ha ha ha... I also have a BLACK CAT like yours, saved from certain death almost 5 years ago, when she was as tiny as it gets, almost cold to touch; but she made it! Now she provides us with love and despite Shadow's "drama queen behaviour", she is a loving cat! Thanks for your videos!
I have three rescued dogs, and in the past I have had rescued cats as well. Sadly, black dogs or cats are far less likely to be rescued or adopted; apparently for reasons of religious superstition. Sometimes I wonder if we truly live in the 21st century , or if we have been transported back to the Middle Ages. It's not like the animal can self-determine its own color scheme prior to birth. Anyway, thank you for rescuing an animal. I personally tend to identify with those paw- shaped bumper-sticker magnet things that you see on cars which ask the question, "who rescued whom?"
Thank you for your kind words! Cats are a living creatures and deserve to have a safe place - living outside here in Nebraska during winter can be very difficult and many cats don't survive! The cats gave back us -and keep giving us- many great feelings and their personalities are so different, but so much fun to observe. Helping people is also very rewarding and it brings back much more than the original investment! Just like you observed about black cats and how they aren't adapted, compared to other colors...., but also what you say about "Middle Ages".... is sad. Just like people who have not learned (I'm including myself here also!) from our past mistakes, we are likely to repeat the same bad decisions! Good example is communism/socialism and or Egypt and Rome.... they all destroyed themselves from inside out! It is so sad but that is how we people do things!
Jacks back! That’s the first thing my buddy and I noticed about part 1. That and how bad ass 409’s look. Small blocks in everything would be like 12ax7’s in everything. Great job as always!
While an instructor with the US Navy we taught our students that before they could touch the probe to a particular portion of the circuit they had to be able to draw what they expected to see. Voltage deflection/frequency/offset/etc. It may sound difficult to do but actually is essential to understanding what you are looking at. Once you know what to expect you can go to the scope controls and set it up so when you do touch the probe to the circuit you will know if it is good or bad. When I see techs attaching to the circuit and then adjusting the scope controls to get a good presentation it makes me wonder if whatever they end up seeing is really telling them anything they can use. Using this process of figuring it out first and then looking at it will make you a better tech and sharpen the tools in your skill set.
Uncle Doug! Firstly thank you for your amazing content and your kind and giving manner. I have learned so much. I have taken what you have taught and put it into practice restoring and repairing some amazing old amps. I had the same problem with my roll top desk and a cat who would always “unfile” any paperwork in the pigeonholes onto the floor whenever it was open. Bad Kitty!
You're sending me back to school here and I wish you were my teacher! It would have a loooot easier! And how cool is a prof. that is a guitar player and amp tech? The coolest!
@@UncleDoug you said absolutely right that most of other videos just toggle switches and that does not make sense. It would be great if you can make a video on oscilloscope dealing with batteries, home supply and checking circuits with oscilloscope. Also I have a single channel osci. (It was cheap). So just wanted to know that does it worth to buy it.
A very welcome video! Your signal generator is awesome. It may be worth noting that smartphone stereo signal generator apps are readily available for free. All you need to do is rewire a an earbud jack to something more usable, such as quarter inch guitar jacks. Waveforms might not be mathrmaticslly perfect, and I doubt you can get a million Hertz, but it works really well and costs nothing if you have a smartphone.
Thanks, Lindsey.....for the nice comments and the smartphone info. Hopefully, viewers who lack their own signal generator can avail themselves of this app.
Uncle Doug.....Where were you in 1969, as my beloved military instructors (who were most definitely never trained as teachers) tried to convey the same information, albeit somewhat less effectively! LOL Thank you so much for prompting my aging gray matter to organize and remember the most basic of O-scope info! Without your patient, concise instruction, I *might* have figured it out on my own.....but would I have taken the time?? Your efforts much appreciated! :-) I look forward to every new video that you take the time to produce. Thank you.
You're welcome, Norm. I'm glad the videos are helpful :) Sadly, in 1969, I was drinking, drag racing, carousing, and doing all sorts of disreputable things.....not including much work with oscilloscopes :)
Thanks for this series Doug. I just picked up a decent scope after many years and the timing couldn't be better. I also enjoy the Jack interludes, he's a keeper.
Good day sir, thanks so much for this osilloscope lecture, I really enjoyed it, please I need more lecture on how to troubleshoot faulty on electronic circuit with osilloscope
Great video Doug, i have a very similar tecktronics scope and have used it for years without really understanding exactly what every knob does and why. After your last video i quickly checked the calibration and found one of my probes was way out! Will be doing the same on the time div today!
Ahh! Jack and his pipe cleaner! I'd love to know what he thinks about the dancing lines on the oscilloscope! Great tutorials. Love from Pete in the UK.
Great video, I have never really understood the triggering until your explanation. I am looking forward to the isolation transformer video. And...First!
Thanks, Paul. I glossed over a bunch of technical details that are better left to future, for those who choose to pursue all knowledge of the oscilloscope. In the meantime, we'll simply move on with a reasonable and adequate overview :)
Superb! Thanks so much for the instructional videos, top notch! Now I need a scope Dear Santa....! Looking forward to the isolation transformer video and more oscilloscope practical testing etc... Great stuff indeed!
@@UncleDoug Would be interesting seeing you put that O'scope to work on an amp circuit with a problem and explaining what it shows on the screen. That is if you haven't made that video already. Thank you
mestre Uncle gostei muito vou comprar ocilloscope para uso nos meus amplificadores valvulado é uma ferramenta mais eficiente eu imagino obrigado por postar vídeos com conteúdo importante South of Brazil
Another great vid Doug. Looking forward (as always) to more. Love how you incorporate Jack & Rusty into the action. I have a feeling there'll be no way for me keep my cat (Ask'er) out of my videos. She's just GOT to be front and center whenever I'm doing something. She's smart enough to give the soldering iron a wide birth though, lol.
Great instructional videos on the scope !! Well done and explained !! BTW couldn't help notice the model # of the scope, I have a model 2210 along with two other Tek scopes, both 2 channel, 1 is max 250Mhz, 2 the newer one is 400 Mhz,,
Hello Uncle Doug ! Yes you hit the nail on the head with that statement! Yup a Ham I yam :-) :-) KC2UVN is the call sign ! I love the hobby, been playing with radios since I was in my early teens so I have been playing with them since the days when vacuum tubes were KING!! Its nice to sit down and listen to the old radios and bask in the GLOW of the nice warm tubes on a COLD winters night ! the large old AM and single side band transmitters become an efficient shack and or bedroom heater !! I have a Collins KWS-1 transmitter from the late fifties and those Blower COOLED 4CX250B's throw off a good amount of heat when transmitting CW !!!! Enjoy your videos, I remain ------------ John Bellas KC2UVN, 73's my friend !!
If it was "scotch" tape, I would understand, otherwise Jack is just a kooky cat. :)) Again, perfect instructions. I must admit to using the "inverse key" rather than doing the 1/ on the math portion. Looking forward to the isolation transformer build.
Good tut vid Doug. For those looking for a used analog scope, your vids show how nice the Tektronix scopes are. My B&K is much more simplified than this. The little extras can make a difference indeed. Look forward to more good stuff as always. Thanks pal.
Damn I missed the bonus question. I got 7.5k frequency, an obvious got ya question aimed at beer drinking watchers losing focus. What a fantastic learning experience!
Great video again..a quick question please...if a scope doss not have a ch1 bnc output on the back of the scope to say send the signal to a frequency couter , how is the best way to set up a t connector on the scopes ch1 input ensuring that just enough signal is taken from the scopes ch1 input (ie ..i want to limit the signal at the t connector so it is just enough to trigger the frequency counter) Thanks in advance.
I only know the procedures that I have personally worked out and perfected, Andrew......and I have no experience at all with the problem you described. My suggestion in cases like this is to simply use trial and error until you find a solution. Good luck.
Great videos. I loved it. I just bought a techtronics 2225 oscilloscope. For an audio generator. Are there any models you would recommend. How much should I pay for one? If you do not have time to respond. I understand fully. Just keep making the great videos! Thanks Tim
Thanks, Tim. Congratulations on the acquisition......you got a good one :) I've had excellent luck with the Tenma Model 72-455 that I use in the video. I recommend it highly.
Uncle Doug any suggestion on an acceptable price range for those signal generators? Or, what would be too much in your opinion? Good video again. I have a Tek 475. I'm looking forward to having some time to get it out and play with it. Looking forward to the isolation tranny build, too! Take care.
Thanks, Bob. I paid a little less than $100 for mine. I would consider that to be a reasonable price for a rather simple unit like the Tenma. You can spend thousands if you want something state-of-the-art with all sorts of features you will never use.
NOTE: There is an error at 20:26 I meant to say "Ten Thousand" not a hundred thousand.
Did you teach at high schools?
I tried it, but found the majority of students to be unprepared, undisciplined, and unwilling to learn what I was presenting. So I shifted to Middle School and found the students to be far more cooperative and responsive.
This video has been up for 6 years and the information you present is still pertinent. I have a digital and analog scopes. The digital scope performs all the calculations for me, a no brainer but I still prefer to use my Tektronix analog scope when doing audio work. I prefer the analog waveform over the digital waveform. To me it's like using a VTVM over a DMM when performing a radio alignment. Watching a needle move is much more useful then watching a bunch of changing numbers. Looking at an analog trace is so much nicer than a digital trace when performing audio tests. Learning to use an analog scope can be intimidating to a first time user but taking the time to learn it is very rewarding. Your series on Scope Basics is very useful and very easy to follow and is a goldmine for beginners. I urge new scope users to watch your "Isolation Transformer" video, the gained knowledge will prevent you from blowing up the front end of your scope or having the probe burn up in your hand. Thank You Uncle Doug.
Thanks for your nice comments and helpful input, D.
I know this video has been up for a while, but I just bought my first scope. Thanks to your tremendous teaching abilities, I now understand it's usefulness and how to operate it correctly. Thank you, Uncle Doug!
You're welcome, Buddy :)
This content should be put all together to form one of the clearest introductions to oscilloscope techniques. Gonna suggest It to my students! Thank you Doug!
You're welcome, Fabio. I would be most flattered if you did recommend our videos to your students.
Uncle Doug so clear and distinct brilliant tutorial. I don’t know if you have done a video of analogue scope calibration but if you have could you possibly direct me to it, many thanks and go safe..
The occasional program interruption with the idiosyncrasies of your pets is pure entertainment genius. Thank you Uniform Delta !
Glad you enjoy them, Julie Juliet :)
I'd appreciate it if you re-wrote every technical manual ever printed. Your explanations are absolutely perfect and extremely easy to comprehend. Screw Netflix and Hulu, this is my favorite streaming channel.
Wow.....thanks so much, Paul. I agree that most tech manuals are generally counterproductive, inducing far more confusion than understanding.
Just WONDERFUL, we’ve waited for many years for such a complete and easy to understand explanation …
Thanks so much, GP :)
Just spent 35 minutes on the phone to my insurance company, 30 minutes of which was spent listening to their stupid jingle jangle music. Then, up pops an email notification from Uncle Doug. Sanity and blood pressure now returned to normal, thank you Doug.
You're welcome, Jeff. We try to be the affordable alternative to extensive psychotherapy :)
Thanks man. You are teaching a 15 year old who is planning to get an analog oscilloscope how to use one.
I'm impressed that you're starting so young, EZ. Have a great career.
"There is nothing wrong with your television set. Do not attempt to adjust the picture. We are controlling transmission. If we wish to make it louder, we will bring up the volume. If we wish to make it softer, we will tune it to a whisper. We will control the horizontal. We will control the vertical. We can roll the image, make it flutter. We can change the focus to a soft blur, or sharpen it to crystal clarity." - Vic Perrin as The Control Voice of The Outer Limits. Sorry, I just had to. Very informative videos on scopes. Thank you for your time in making these.
Thanks for your nostalgic input, Ross :)
Boy did i need this tutorial, perfectly explained for newbies like me. Thanks for taking the time to explain this complex topic to us. I would really appreciate the follow up turtorial where the occiloscope is used on.
1) Battery powered items
2) mainsTransformers, with and without shared common between primary and secondary
3) Isolation transformers
4) Mains powered items
Like you say, there is so much hype, contradiction and waffle around on youtube its difficult to know what to believe.
Thanks again J...
You're welcome, IG, and thanks for your kind comments. I will show DC traces and fully intend to investigate the truth about isolation transformers.
Same here
Excellent presentation....Very good explanation, which makes it easy for everyone to understand. Thanks!
Very detailed explanation anybody who understand electronics can learn from your videos, keep up..
Thanks, will do!
I' brazilian, i have a tek 2205GM since 1995, i bought it brand New. It's here, i'm fixing/replacing its potentiometers of position. Its aspect is perfect like a new one.
Continued success with your project, Mcac :)
Great teaching. And thank you for allowing us to go out and play for recess (while we watch Jack)
Thanks, Graham. We all need a break once in a while :)
Thanks Uncle Doug for lecturing me. I enjoy learning from your video 👍
I'm glad to hear that, Andy.
excellence is spewing from this channel
Thanks, Sean. We strive to be the Mt. Vesuvius of YT Wisdom :)
Thanks, Uncle! Always glad to get notified you posted a new video! You always teach me something!
You're welcome, Scott :)
Thank you for your time this is brilliant and it is giving me the answers i need in an constructive progress THANK YOU
You are quite welcome, Craig. That's great to hear :)
Thanks Uncle! You are a top notch teacher, and I applaud and appreciate your efforts! Cheers!~
You're welcome, Rick.
In 5 videos, the 2 on isolation transformers, Oscilloscope Basics 1 and 2, and the dim bulb current limiter, my understanding of my scope has really grown and my confidence level in using it has skyrocketed! Thank you so very much Uncle Doug! I'm between job opportunities just now but as soon as I'm back in the saddle, I'll become a patron! All the best - Luther
You're quite welcome, Luther. It's great to hear that the videos are helpful :)
This is great for new scope users like myself... we need to start somewhere..basics understandings are important. Thank you.
You're welcome, GF. Good luck.
You must have been one helluva educator! Excellent job sir.
Thanks, Pete :)
Absolutely clear and professional. Thank you for your job, Mr. Uncle Doug!!
You're quite welcome, Natalia.
UD, the scope series you have done is fantastic, thanks for answering so many of my questions I've had for years!
You're welcome, Dave. I'm glad it's helpful :)
Two excellent videos on using the o-scope. My cat would come running when he heard me tearing up a newspaper. When you laid it down he would carefully tear it into strips.
Thanks, Bob. Cats are crazy guys :)
Being a person that has a dozen scopes and use them daily, these types of basic tutorials are great refreshers. Really helps bring us all back to the basic of how to use these wonderful pieces of test gear. Thanks for the great videos as always Uncle Doug. I really enjoy them. BTW I have one of the all time favorite solid state Tektronix scope arriving tomorrow on UPS. Will be doing some videos on getting this classic back up and running and adding it to my collection.
You're welcome, RS. Good luck with the restoration of your newly acquired oscilloscope.
finally, a good and decent explanation on oscilloscope. thanks again uncle Doug.
You're welcome, B&P :)
Cool house take care uncle Doug. Watched most vids ys ago spent 2 yrs on rd. I really enjoy them. All things eternal are unseen. Rip Rusty. Cats a welcoming companions.
Thanks, David.
Cats are fun to watch. When they jump up onto something they first carefully survey the height and then proceed to calculate the exact amount of effort required to just barely clear the edge..... making sure to not over jump or expend any more energy than needed, and they rarely under jump. Doesn't matter if it is 10 inches or 4 ft.
Thanks UD for this series. I have always wanted to learn how oscilloscopes work. Your method of presentation is always enjoyable. It is hard to misinterpret the information you provide due to your unique teaching approach.
You're welcome, Scott. I agree about cats.....their economical athleticism is always impressive to watch :)
Hey UD, also meant to mention publicly that I am really enjoying the Newcomb. You did a fantastic job with the conversion, not to mention it is practically brand new looking - inside and out. Heck, my wife even enjoys hearing me play for a change, lol.
These videos were immensely helpful. I bought a 2213 (very similar) because I knew I could learn to use it, thanks to your teachings. Bless you, Uncle Doug.
Great to hear! Good luck with it, Eugene.
A very clear explanation. Uncle Doug, I wish that those fellas that print manuals for High tech stuff (especially Seimens and Rockwell) should have you layout the method of instruction in their manuals. After the new manuals cover their asses with all of their safety warnings and disclaimers. They usually start with the first items of explanation with the understanding that the reader knows nothing about the device the manual has been written for. Then, after about a page and a half of good basic explaining, the tone of the instruction becomes that of an explanation to somebody that already knows how the device operates and only needs to be technically tuned up to be able to understand how to install, calibrate, commission, and troubleshoot the device. A big jump in the way the information about the device is being presented. Your explanations have no such surprises in them and leave the instructee with a much clearer understanding of the subject by the end of the instruction. Why the big guys can't follow your example is beyond me.
Siemens and Rockwell... bet you're talking about PLCs and/or drives. That's the stuff I've worked on most of my life and I've concluded they write those manuals like that on purpose. That way they can sell you training to the tune of $500 or $1000 per day, slow paced training that keeps you buying more and more classes hoping to get to The Answers some day.
Actually, if the manuals or training were any good I'd probably be out of a job. With good manuals, electricians and maintenance men everywhere would soon figure out that what I do (industrial control systems from scratch, plus troubleshooting and repair) is not magic at all.
And yeah, Doug is an excellent teacher. Heck, I've been using scopes for ever and ever, but I still come here to enjoy how he presents things. His style reminds me of a math teacher bacm in middle school who quite literally changed the course of my life...
Thanks so much, Tony. What you describe is exactly what I try to avoid. There are millions of people anxious to learn all sorts of technical skills.....but sadly, they are let down by engineers who are either unable or unwilling to provide effective instruction. This is largely why I became a math and science teacher many years ago, and why I have now turned to TH-cam to continue trying to reach the masses with instruction that can be comprehended.......and not dreaded.
Thanks so much, Sooti. By coincidence, I chose middle school for my teaching career. It's the perfect time to shape students, before they become "hardened" in high school and college.
Thanks Uncle Doug! Great video. Very helpful.
You're welcome, GL :)
Thank you for another informative video. My cat is fond of finger picks. Everytime I play the pedal steel guitar, when I quit playing, she knows it is times to steal my picks.
Maybe your cat is trying to learn how to play the guitar. This is how Jack & Ollie got started......stealing my picks.
this is very helpful.slowly explained and thus effective.thank you Uncle Doug
I'm glad to hear this, KC. Thanks :)
Doug, I love hearing your gentle slow talking voice which explains things very clearly to me.
I have to think hard about the math part with how many thousands of a second are the same as so many hundredths of a second etc. This has always never clicked with me.
Mental block.
But I will keep watching your fantastic videos.
You make us WANT to learn and you don't overwhelm us with your cleverness.
Thank you kind Sir.
Ps...love the cat too.
Pete
Thanks so much, Peter. Our goal is to convey useful information, rather than self-glorification, and it's good to hear that this approach is successful :)
Great video of oscilloscope use for beginners.
Thanks, Scorp.
Great series! Even I know how to use the oscilloscope it's fun to watch it. With this series every interested viewer is able to learn how to operate it. Thanks!
You're welcome, Murrat :)
Another very informative video, very good explanations of the timebase function and triggering. Great demo with the signal generator too. I wish I would have had an instructor like you all of those years ago back at tech school. We had a cat “Katy” that loved to chew on those orange disposable fingernail files, sharpening her teeth as I always told my wife. Our dog “Heidi” comes running when she hears the freezer drawer open to get an ice cube.
Thanks so much, Mark. Our pets never cease to amaze us with their quirkiness......just like people, I guess :)
So far this has been a great topic of videos! I have tried to watch other oscilloscope videos and they either confuse me, put me to sleep, or both.. Your explanation of this topic has inspired me to dig out my scope and use it. Thanks so much for all your efforts Doug . You are truly keeping this technology alive!
You're welcome, Aaron. I'm really glad to hear that my presentations are relatively understandable and not a substitute for Ambien :) It's our goal to present this information in an effective way.
@@UncleDoug i have seen videos where they recommend you use a isolation transformer is that requiered?
Dear Uncle Doug, an excellent video, thank you for sharing this with us..
Thanks, Mark. Glad you liked it.
I watched part one and two tonight, and they are both great videos. These are he best O-scope videos I've seen, and I watched a bunch. I just got my first scope, and am learning how to work it. I have a lot to learn, but your videos helped me a bunch. Thanks for sharing your knowledge.
You're quite welcome, Tony......glad it was helpful.
Thank you so much, I found your tutorials are very good comparing to others, special for newbie to electronic. really recomended.
You're welcome, Kevin. Glad it was helpful.
Thanks for another great tutorial Uncle Doug! I haven't used an oscilloscope in years and the refresher is definitely appreciated.
You're welcome, Thomas. Glad it's helpful :)
Автору благодарность за отличное кино! Многие вопросы стали понятны.
Это хорошие новости. Спасибо за просмотр.
You are a very good teacher.
Thanks, Frank.
Cant wait till part 3. Definitely interested in seeing this isolation transformer your building and learning more about using these as tools to evaluate and troubleshoot amplifier circuits!
I've been working on the isolation transformer video, DS. Hopefully, it will be ready to post in the near future.
Thanks for posting this. I'm in tech school and we had a short intro to o-scopes, but I didn't get much out of it. This explains it perfectly. Subbed.
Thanks twice, Mike.
Outstanding introduction UD!
Thanks, Michael.
Very informative as always ... We thank you ... )))
Thx Uncle Doug and jack😎 excellent as always!!
You're welcome, Ken :)
Ken, you must have had something hold you up on this one. I noticed you were not first this time around. No shame in that.... Uncle Doug's videos are always worth the wait if necessary.
yeah my internet went down lol. the tech just left ;-)
It's good to have you back, Ken :)
thx. yeah you can tell who leaves feedback from there phone by the empty boxes or an x in a box from the emoji's. yeah gotta get the doug n jack info anyway you can. even the small phone screen works in a pinch! :-)
Not to change the subject...ha ha ha... I also have a BLACK CAT like yours, saved from certain death almost 5 years ago, when she was as tiny as it gets, almost cold to touch; but she made it! Now she provides us with love and despite Shadow's "drama queen behaviour", she is a loving cat! Thanks for your videos!
You're welcome, Tony. Best Holiday Wishes to Shadow.....and her entire family :)
I have three rescued dogs, and in the past I have had rescued cats as well. Sadly, black dogs or cats are far less likely to be rescued or adopted; apparently for reasons of religious superstition. Sometimes I wonder if we truly live in the 21st century , or if we have been transported back to the Middle Ages. It's not like the animal can self-determine its own color scheme prior to birth. Anyway, thank you for rescuing an animal. I personally tend to identify with those paw- shaped bumper-sticker magnet things that you see on cars which ask the question, "who rescued whom?"
Thank you for your kind words! Cats are a living creatures and deserve to have a safe place - living outside here in Nebraska during winter can be very difficult and many cats don't survive! The cats gave back us -and keep giving us- many great feelings and their personalities are so different, but so much fun to observe. Helping people is also very rewarding and it brings back much more than the original investment! Just like you observed about black cats and how they aren't adapted, compared to other colors...., but also what you say about "Middle Ages".... is sad. Just like people who have not learned (I'm including myself here also!) from our past mistakes, we are likely to repeat the same bad decisions! Good example is communism/socialism and or Egypt and Rome.... they all destroyed themselves from inside out! It is so sad but that is how we people do things!
I love that little Model T truck.
Thanks, LD.
Jacks back! That’s the first thing my buddy and I noticed about part 1. That and how bad ass 409’s look. Small blocks in everything would be like 12ax7’s in everything. Great job as always!
Thanks, Todd. I agree, 409's are the KT-150's of the engine world :)
While an instructor with the US Navy we taught our students that before they could touch the probe to a particular portion of the circuit they had to be able to draw what they expected to see. Voltage deflection/frequency/offset/etc. It may sound difficult to do but actually is essential to understanding what you are looking at. Once you know what to expect you can go to the scope controls and set it up so when you do touch the probe to the circuit you will know if it is good or bad. When I see techs attaching to the circuit and then adjusting the scope controls to get a good presentation it makes me wonder if whatever they end up seeing is really telling them anything they can use. Using this process of figuring it out first and then looking at it will make you a better tech and sharpen the tools in your skill set.
That's a very interesting idea, Thorerik. Thanks for sharing it with us.
Uncle Doug! Firstly thank you for your amazing content and your kind and giving manner. I have learned so much. I have taken what you have taught and put it into practice restoring and repairing some amazing old amps.
I had the same problem with my roll top desk and a cat who would always “unfile” any paperwork in the pigeonholes onto the floor whenever it was open. Bad Kitty!
You're welcome, Jonathan. We're glad to hear that the videos have been helpful. There is something about cats and roll top's, I guess :)
You're sending me back to school here and I wish you were my teacher! It would have a loooot easier! And how cool is a prof. that is a guitar player and amp tech? The coolest!
Thanks so much, Philippe :)
Love your teaching
Thanks, Sam :)
Thank you. A very good basic review.
Glad you liked it, Glen :)
Thanks very much sir I understood most of the part explained.
You're welcome, PK.
@@UncleDoug you said absolutely right that most of other videos just toggle switches and that does not make sense. It would be great if you can make a video on oscilloscope dealing with batteries, home supply and checking circuits with oscilloscope. Also I have a single channel osci. (It was cheap). So just wanted to know that does it worth to buy it.
Thanks, PK. I'll keep your suggestion in mind for the future.
A very welcome video! Your signal generator is awesome. It may be worth noting that smartphone stereo signal generator apps are readily available for free. All you need to do is rewire a an earbud jack to something more usable, such as quarter inch guitar jacks. Waveforms might not be mathrmaticslly perfect, and I doubt you can get a million Hertz, but it works really well and costs nothing if you have a smartphone.
Thanks, Lindsey.....for the nice comments and the smartphone info. Hopefully, viewers who lack their own signal generator can avail themselves of this app.
Uncle Doug.....Where were you in 1969, as my beloved military instructors (who were most definitely never trained as teachers) tried to convey the same information, albeit somewhat less effectively! LOL Thank you so much for prompting my aging gray matter to organize and remember the most basic of O-scope info! Without your patient, concise instruction, I *might* have figured it out on my own.....but would I have taken the time?? Your efforts much appreciated! :-) I look forward to every new video that you take the time to produce. Thank you.
You're welcome, Norm. I'm glad the videos are helpful :) Sadly, in 1969, I was drinking, drag racing, carousing, and doing all sorts of disreputable things.....not including much work with oscilloscopes :)
Excellent tutorial Uncle Doug. Thanks for your time and Jack is a noble predator 😎😉
You're welcome, CC. Yes, Jack has rid our house of all sorts of horrifying intruders :)
Thanks for this series Doug. I just picked up a decent scope after many years and the timing couldn't be better. I also enjoy the Jack interludes, he's a keeper.
You're welcome, John. I'm glad our interests coincided :)
very well explained thanks a lot Uncle Doug and jack of course, you inpire me to make my own guittar tube amplifier, thanks a lot again
You're welcome, Pedro. By all means, build your own amp. It's a great hobby.
Good day sir, thanks so much for this osilloscope lecture, I really enjoyed it, please I need more lecture on how to troubleshoot faulty on electronic circuit with osilloscope
Thanks, DES. I will keep your request in mind for the future.
Great video Doug, i have a very similar tecktronics scope and have used it for years without really understanding exactly what every knob does and why. After your last video i quickly checked the calibration and found one of my probes was way out! Will be doing the same on the time div today!
Thanks, Bill. To be honest, I don't know every knob.....but at least we'll know enough to work effectively on amp circuits.
Awesome! Please part 3😅
Thanks, V1. Maybe some day ;)
Ahh! Jack and his pipe cleaner! I'd love to know what he thinks about the dancing lines on the oscilloscope! Great tutorials. Love from Pete in the UK.
Thanks, Peter. Jack is bored by oscilloscope images, vastly preferring to chase moths that sneak into our house when the door is open at night.
Thanks for the video. Very clear and concise explanation.
You're welcome, T. Glad it was helpful :)
many thanks
Glad to have helped, VP.
Great video, I have never really understood the triggering until your explanation. I am looking forward to the isolation transformer video. And...First!
Thanks, Paul. I glossed over a bunch of technical details that are better left to future, for those who choose to pursue all knowledge of the oscilloscope. In the meantime, we'll simply move on with a reasonable and adequate overview :)
Excellent tutorials
Thanks, K3 :)
Thanks Doug, been watching for awhile. First to say Hi though. All yours vids are awesome.
You're welcome, APB. Thanks for commenting. Don't be a stranger :)
Caught this on Patreon already...but came over here to go full screen on a couple of spots. Thanks again for
sharing your vast knowledge(8-).
You're welcome, Tom :)
Excelent tutorial sir, thank you!
You're welcome, Sergio.
Thank you and hello to Jack.
You're welcome, Anthony. Jack says "Hi" :)
Great topic/information presented with Uncle Doug's patient and concise delivery, thank you! (Btw, I am math/cs degree with a budding passion for EE)
Thanks, A1. You sound like a natural for an EE degree.
Superb! Thanks so much for the instructional videos, top notch! Now I need a scope Dear Santa....! Looking forward to the isolation transformer video and more oscilloscope practical testing etc... Great stuff indeed!
You're welcome, CB. Thanks !!!
@@UncleDoug Would be interesting seeing you put that O'scope to work on an amp circuit with a problem and explaining what it shows on the screen. That is if you haven't made that video already.
Thank you
Great series Doug!
Thanks, Phil :)
Another great video Doug should really help a lot of people to dust off those scopes. Mark
Thanks, Mark. I hope so. They can be a very useful tool, but often end up languishing in a store room due to a lack of understanding.
mestre Uncle gostei muito vou comprar ocilloscope para uso nos meus amplificadores
valvulado é uma ferramenta mais eficiente eu imagino obrigado por postar vídeos
com conteúdo importante South of Brazil
Obrigado Jorge. Eu acho que você gostaria de ter um osciloscópio. Espero que você possa encontrar um em sua área. Boa sorte.
thanks for you timeGod bless you
You're welcome, Gahlan. Likewise :)
Another great vid Doug. Looking forward (as always) to more. Love how you incorporate Jack & Rusty into the action. I have a feeling there'll be no way for me keep my cat (Ask'er) out of my videos. She's just GOT to be front and center whenever I'm doing something. She's smart enough to give the soldering iron a wide birth though, lol.
Thanks so much, CA. Jack does tend to insert himself into all aspects of our home life.....much to our delight :)
Great video interesting thank you
Thanks, Ron :)
Excellent, really helps a lot! Thank you!
You're welcome, Shy.
Great instructional videos on the scope !! Well done and explained !! BTW couldn't help notice the model # of the scope, I have a model 2210 along with two other Tek scopes, both 2 channel, 1 is max 250Mhz, 2 the newer one is 400 Mhz,,
Thanks, John. Wow.....400MHz is ten times the frequency of mine. I would imagine it might be well suited for radio work.
Hello Uncle Doug ! Yes you hit the nail on the head with that statement! Yup a Ham I yam :-) :-) KC2UVN is the call sign ! I love the hobby, been playing with radios since I was in my early teens so I have been playing with them since the days when vacuum tubes were KING!! Its nice to sit down and listen to the old radios and bask in the GLOW of the nice warm tubes on a COLD winters night ! the large old AM and single side band transmitters become an efficient shack and or bedroom heater !! I have a Collins KWS-1 transmitter from the late fifties and those Blower COOLED 4CX250B's throw off a good amount of heat when transmitting CW !!!! Enjoy your videos, I remain ------------ John Bellas KC2UVN, 73's my friend !!
Back at ya', John. Stay toasty :)
3:51...I was curious about that- but I can't remember actually checking it.
Glad it was helpful, Dale.
I bet you have been nominated for Teacher of the Year even more often than Peggy Hill!
The students and parents had a real nice party when I retired......much like the end of Mr. Holland's Opus (movie).
Uncle Doug It must have been a great party! You are the George Bailey of electronics teaching!
If it was "scotch" tape, I would understand, otherwise Jack is just a kooky cat. :)) Again, perfect instructions. I must admit to using the "inverse key" rather than doing the 1/ on the math portion. Looking forward to the isolation transformer build.
He is indeed, Andrew, and thus he fits well in our madhouse. Thanks so much :)
Good tut vid Doug. For those looking for a used analog scope, your vids show how nice the Tektronix scopes are. My B&K is much more simplified than this. The little extras can make a difference indeed. Look forward to more good stuff as always. Thanks pal.
You're welcome, Carl :)
Can you post a video on how to use an o-scope to diagnosis hum, motorboating, oscillation, bad filter caps etc....
Please see my more recent video on tracing noise in a circuit with an oscilloscope.
Damn I missed the bonus question. I got 7.5k frequency, an obvious got ya question aimed at beer drinking watchers losing focus. What a fantastic learning experience!
Yes, those tricky questions do tend to weed out the beer guzzlers......myself included ;)
very helpful. ty
Although this is stuff I already know, still a great tutorial for beginners. The next video sounds interesting, so I'll remember to stay t...
.......uned. Thanks CDC :)
My mind exploded at the tape eating part
It's actually rather tasty, Matt.
@@UncleDoug Are you trolling me, sir?
Thank you
You're welcome, B.
Great video again..a quick question please...if a scope doss not have a ch1 bnc output on the back of the scope to say send the signal to a frequency couter , how is the best way to set up a t connector on the scopes ch1 input ensuring that just enough signal is taken from the scopes ch1 input (ie ..i want to limit the signal at the t connector so it is just enough to trigger the frequency counter)
Thanks in advance.
I only know the procedures that I have personally worked out and perfected, Andrew......and I have no experience at all with the problem you described. My suggestion in cases like this is to simply use trial and error until you find a solution. Good luck.
Great videos. I loved it. I just bought a techtronics 2225 oscilloscope. For an audio generator. Are there any models you would recommend. How much should I pay for one?
If you do not have time to respond. I understand fully. Just keep making the great videos! Thanks Tim
Thanks, Tim. Congratulations on the acquisition......you got a good one :) I've had excellent luck with the Tenma Model 72-455 that I use in the video. I recommend it highly.
Uncle Doug thank you
Uncle Doug any suggestion on an acceptable price range for those signal generators? Or, what would be too much in your opinion? Good video again. I have a Tek 475. I'm looking forward to having some time to get it out and play with it. Looking forward to the isolation tranny build, too! Take care.
Thanks, Bob. I paid a little less than $100 for mine. I would consider that to be a reasonable price for a rather simple unit like the Tenma. You can spend thousands if you want something state-of-the-art with all sorts of features you will never use.
Great tutorial.
Thanks, Jennifer :)