Oscilloscope Basics, Part 2: Seconds/Division and Triggering 

NOTE: There is an error at 20:26 I meant to say "Ten Thousand" not a hundred thousand.

Great teaching. And thank you for allowing us to go out and play for recess (while we watch Jack)

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!

Just WONDERFUL, we’ve waited for many years for such a complete and easy to understand explanation …

The occasional program interruption with the idiosyncrasies of your pets is pure entertainment genius. Thank you Uniform Delta !

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.

Excellent presentation....Very good explanation, which makes it easy for everyone to understand. Thanks!

Very informative as always ... We thank you ... )))

Автору благодарность за отличное кино! Многие вопросы стали понятны.

Thank you for your time this is brilliant and it is giving me the answers i need in an constructive progress THANK YOU

Thanks Uncle Doug! Great video. Very helpful.

Great series Doug!

Thanks, Uncle! Always glad to get notified you posted a new video! You always teach me something!

excellence is spewing from this channel

Excelent tutorial sir, thank you!

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...

Love your teaching

Dear Uncle Doug, an excellent video, thank you for sharing this with us..

Excellent tutorials

Thanks for the video. Very clear and concise explanation.

Thank you. A very good basic review.

this is very helpful.slowly explained and thus effective.thank you Uncle Doug

UD, the scope series you have done is fantastic, thanks for answering so many of my questions I've had for years!

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!

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

Absolutely clear and professional. Thank you for your job, Mr. Uncle Doug!!

Excellent, really helps a lot! Thank you!

Thanks Uncle! You are a top notch teacher, and I applaud and appreciate your efforts! Cheers!~

I love that little Model T truck.

Outstanding introduction UD!

Excellent tutorial Uncle Doug. Thanks for your time and Jack is a noble predator 😎😉

finally, a good and decent explanation on oscilloscope. thanks again uncle Doug.

You are a very good teacher.

Thanks Uncle Doug for lecturing me. I enjoy learning from your video 👍

Great video of oscilloscope use for beginners.

Thanks for another great tutorial Uncle Doug! I haven't used an oscilloscope in years and the refresher is definitely appreciated.

thanks for you timeGod bless you

Thank you!

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!

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.

very helpful. ty

Great tutorial.

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.

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 Doug, been watching for awhile. First to say Hi though. All yours vids are awesome.

Thank you

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

Great video interesting thank you

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 must have been one helluva educator! Excellent job sir.

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!

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.

Very detailed explanation anybody who understand electronics can learn from your videos, keep up..

Masterpiece!

Thank you so much, I found your tutorials are very good comparing to others, special for newbie to electronic. really recomended.

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.

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.

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 man. You are teaching a 15 year old who is planning to get an analog oscilloscope how to use one.

Thx Uncle Doug and jack😎 excellent as always!!

And again thanks.

thanks so much...

Thank you and hello to Jack.

"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.

This is great for new scope users like myself... we need to start somewhere..basics understandings are important. Thank you.

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.

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

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.

Awesome! Please part 3😅

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)

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!

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-).

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.

Great video, I have never really understood the triggering until your explanation. I am looking forward to the isolation transformer video. And...First!

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 very much sir I understood most of the part explained.

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.

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!

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!

My mind exploded at the tape eating part

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

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

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.

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.

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!

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.

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.

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.

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.

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.

Another great video Doug should really help a lot of people to dust off those scopes. Mark

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...

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.

Thanks again Doug, great explanation as always! Are you planning a video series on solid-state electronics? I'd like to see this pro teaching skills in action on transistor based guitar amplifiers. There are a lot of great circuits to work on but they are more complex and hard to read the schematics than let's say a small tube amp. I would be pleased to gain some knowlage on that topic, too. Cheers from Hungary!

Excellent introduction to oscilloscopes from someone whose explanation-skills are honed to the max. Besides all your great explanations, there is a questions that burns under the fingernails of your devoted viewers: Is Jack only crazy about US-brands like Scotch or 3M, or is this furry connoisseur of adhesive tape also acquainted with the more exotic flavors of sticky comestibles like the German Henkel/Pattex-brands? :) Good show, thanks a lot for sharing!

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,,

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!

Good job as always, if I may I would like to suggest that when measuring frequency on a periodic signal it is common practice to adjust the sweep rate such that you have at least one full cycle on the screen and only one full cycle. The frequency is then the number of boxes times the sweep rate divided into 1, which is really what you did without having to worry about how many full waves you had because it is one. If that makes sense? Anyways good jog and thanks for sharing.

My favorite teacher on all things tube. I thought you had mentioned that you were going to make a video actually using the scope to troubleshoot an amp or audio receiver but I looked through your list of videos and didn't see one. What am I missing?