#287 

Thank you so much for this lesson. I recently purchased a 2465B and had no Idea how to use this feature. Over the next week, I have to get on the bench and practice this until I am comfortable using it. Can't wait.

I for one marvel at the inventiveness of engineers of yesteryear, who couldn't just throw a faster processor and more ram at a problem. Some of the things they came up with were just stunning.

Excellent video. I just added a 2465B to my bench and am amazed as to what these old analog scopes can do. Thanks!

Old scopes always amaze me. I can't even start to figure out how they fit all of those features in a unit with old school component technology. I have a Tek 2465 at home I just fire up now and then to play with.

Wow. Still have a lot to learn about my 2467. Thanks for the demonstration.

I have a 2445a and I never knew about this! I'm amazed!

What an extremely complex feature for an analog scope, would never have expected such an old scope to have such a complicated feature.

I have that 'scope and realise how much of it's potential I've missed - great video, will try this out tomorrow!

Love that sharp analog display. Beautiful instrument.

i bought a second hand scope , the 350Mhz version. After seeing your vid, i finally know all the features of it, and that the scope is functionning perfectly still. Tthanks :)

I have a 2465B, love it, also have a TDS350 but still use the analogue more, and now I know another function to further keep me away from digital scopes!! I think this series of scopes were some of the best made!!

A button for everything. The real beauty of these scopes. So easy to change modes and see what's happening without going into menus! Although I do prefer the vertical position knobs to be closer to the scaling knobs. ;-)

Always i say that are incredible the characteristics of these analog equipments. I imagine the team behind the construction and the responsabilities of the engeneer in chief. Very thanks for sharing Alan.

Love my 2465. Love your videos. Thanks for sharing this. Amazing what Tek was doing so long ago!

Nice video Alan. Amazing what we forget due to technology. Have a great day.

I have a 2467 with the CTT option and I've just discovered that it gives you a couple of extra tricks. First, the CTT will measure the time delta between triggered B sweeps. Second, with the CTT option, it's possible to set up separate slope and trigger levels for each of the B sweeps. In combination, you could e.g. use this to measure the length of a pulse by triggering on the fall/rise.

Always enjoy your videos Alan. I just was given a 2445A, that was is need of some care. Turns out it works just fine, but some prior owner, broke off the shafts of the vernier controls for both VOLT/DIV channels. Fortunately I got them back to the calibrated position, but not enough shaft left to attach a knob on. I also own the 2465 (300 Mhz) and it is my go to scope even though I have a modern digital scope.I just think Tektronix made the best scopes and their durability is a testament their quality.

I thought this kind of functions is exclusive to the digital oscilloscope. Very interesting. Thank you.

Wow I never knew my old 2465 could do this, thanks for the very clear explanation.

Thanks for this Alan. I used to use my Phillips scope to view video with the delayed time base, now I know how to do it on my 2465A. Excellent well explained video as usual.

Another very well presented video. Very useful content. Thank You !!!!!

An excellent showcase of a complex feature! We test these scopes at my workplace, and the timebase testing has always been difficult to understand. Your explanation has helped me understand it so much better.

Clear and easy to understand video , nice shot of the front of the 'scope ;-)

Tektronix is great.Tthe way they managed the company and how the engineers were working at their full potential amaze me

Excellent tutorial. Thanks for taking the time.

That was a good one, very nice, thanks for sharing.

Thanks Alan! There's a lot of ability to my scope that I haven't taken the time to learn about.

Amazing features, thank you!

Thank you for the insight. Awesome design

Another part of the puzzle explained. Thanks Alan!

Nice. I just got my hands on type 453 oldie scope. Still learning these triggering features. Seems I also got this delay thing you speak of.

I have a 2467B and will be awesome if you can do much more videos exploring these beasts.

Tek had this technology nailed! I'm still using my Tek R7844 and Tek 7834 each equipped with 2) 7B92A delay time bases every day alongside a contemporary imported DSO. Also use a Tek 2247A portable.👍

Great video!!!! Really like your videos.

Благодаря за видеото! Thanks for video!

Thankyou. Very informative.

Show us more, these scopes are great

I guess a lot of people are not going to use these tricks for much longer but it is a good demonstration on how instruments can be designed to be smart. And explains some of the complexity of the device and why there are gazillions of parts on the boards inside, nowadays that would just be a bit of software I guess.

Useful video

Nice video Alan. Tek did and do make some outstanding scopes. That's a nice example, I'de be proud to own that. I think I would prefer to use it than my two modern DSO's. Siglent SDS1102CML and SDS1104X-E. both of which together, probably don't cost as much as your TEK2445B.

This is one of my favorite trigger modes and I miss not having it on the lower end scopes.

Thanks for showing how to pull the knob, I thought my old 2465 had issues.

Useful! Thank you.

Excellent

Great as always. May be do an episode about how the delays are used to make meaningful measurements. Even something goofy like how a switching transistor in a power supply works. The "delay" of the inductive aspect of the transformer winding is interesting. Can we make a quality guess without a Clive style teardown by looking at the different individual windings? Crazy I know, but that's the sort of stuff we tried to do in '85.

great vid ty

Best video for My morning coffee:) 2445B series is the MUST have analog scopes. I still hunting for a nice piece, but nobody wanna sell it :) I found one NOS! Price? 3500 bucks! Eh... thanks!

Just scored a Tek 2430A. I hope it works is well as the old 485 I got a few weeks ago. Becoming an old Tektronix junkie 😝 I need to stop looking at scope deals on eBay. Got the 2430A for $45, $55 to ship lol. Running out of bench space.

Is any chance you could do the video, about the techniques used to measure/spot short, single pulses on analog scope (Tektronix 2465b or similar)

I love my Tektronix 2465 DMS, but since I never understood completely A/B Sweep Delay .... until I saw your video! You are a wealth of information and thank you for helping others like me by making your videos! My scope isn't as sharp - display isn't as crisp as yours - what would be some steps I can take to remedy that? Stay sage and healthy!

Great video! I have Tek 2465 DMS that isn't working well. Any suggestions where to look to fix it? Sometimes I get trace on all 4 channels but sometimes they go away, Also the text/numbers at the top + bottom aren't always visible, they go to some electronics heaven but if I wiggle stuff, sometimes I get ti to stay on. Also, when I push the "beam finder" button, everything shrinks, so all 4 channels are about 2" long and the text is just small pixels - all in the center. Thanks for sharing and teaching here!

Why are these scopes a little more expensive? now we can see why! For their age, superb scopes indeed.

I want to get a used analog Tek scope in Australia, but gosh they are so expensive.

How are you, thanks for all your very helpful videos. Do you have any information about how to troubleshoot a 2465b and how to calibrate it?

Cool !! I just got my scope 2 years ago. All sorts of cool stuff !! I use the analog one for when I need more perception. Like when a waveform has more complicated structures. In a digital scope the refresh rate is dismal, so catching non-periodic anomalies Is damn near impossible... I really wish the old scope had more on screen measurements and COLOR .. jeez different color traces . who woulda thought that was needed !! =joke ... I knew the pull knob zoomed, but I didn't know when you turn it it magically pops up a new mini version, and all the other tricks u showed .... hmm . now thinking about it > whats the deal with the var , is there some magic special reasons they exist more than merely shrinking ?

Hey! I got a Tek 2465A, it appears to me that the focus is not perfect! I'm afraid to try the calibration of the focus trimpots. Have you ever done it ?

These Ole Tekz R00l! Tho come to think of it, this one's not _that_ old... 😉

Thank you for this Alan. I've got a 2467B and had been trying to find out what other features I'm missing out on. This makes it so much easier. One thing I've also got to ask about the 2400 series is why does the ground terminal use a banana jack over the clip on method used today and on the cal signal on top for probe cal. Does it offer a dual purpose?

A++

Great video. I have a 2246 with an odd symptom I wonder if you had seen before. The Voltmeter function of the scope is intermittent, and when it doesn't work it displays "Ouch. Turn Volts/Div CCW" even with no signal in. I can't find anything in the service manual and thought with you vast experience that maybe you had experienced this symptom before? Thanks for the wonderful content.

Quick question. I'm assembling my electronics workbench (aimed at RF - primarily HF but it would be nice to cover up to the 70 cm band) and I need to pick a scope. Any suggestions that wont break the bank? As we are on the topic, a video on how to put together a instrument setup for RF test, repair and design without selling you kidney and first-born would be great!

Helo Alan,it worth buyng a autumotive usb picoscope for ham radio aplication

I just bought a 2445 for $186 on eBay including shipping. Did I get burned or a good deal? I currently have a Iwatsu SS-5710 but I've always wanted a Tektronix because they show information on the screen like the volts/div and the sec/div and my Iwatsu doesn't do it.

Hi Alan, Interesting piece of test equipment. I was wondering what they would cost, and a refurbished one goes for about $1300. 73 WB3BJU

I love classic analog Tektronix scopes! My 2465A is the pride of my collection. One of these days maybe I'll snag a 2465B or 2467B... :-)

Slightly different subject. Do you know where I could find a replacement fan for the 2465A? Any information would be appreciated. Thanks.

Hi. One question about the crt. How much better would be the micro-channel plate CRT in 2467(B) compared to the "standard" crt? Especially with those high bandwidth scopes. In anyway one would maybe wanted to spot some glitches and I was wandering if the u-channel plate would provide much more chance to see it...???

Hi mate. I was wondering if you have an opinion on whether you should operate your analog oscilloscope on no timebase mode (beam stationary) or any mode that would leave a constant electron beam on a single area. Will it burn the phosphor behind the glass? I purchased my analog oscilloscope last night and the seller has taken very good care of it and told me not to let the trace stay stationary. I believe him, I just don't know how paranoid I need to be and how many seconds/minutes before it will overheat. The model is a Pintek PS-605

how can i stop the triggering sweep on a 7hz wave?, like it is too damn slow so that i can count the peaks. how can i save it on memory?

Is this only on the B series or was this also available on the A and original?

Hi, I am reading that some (better) analog scopes have delay line so one can see the actual trigger signal, or even some part before? I think, if somebody, you should know about that feature? So you maybe would like to elaborate on that. And if they do not have it, if we would have a external analog delay, we could feed the original signal into the external trigger input and the delayed signal to a regular channel. Old TV's used (only PAL maybe, not sure) a delay line, but my knowledge about that ends there. And no idea what handy part could be used here for (not to have to use a big lumpy coil). I am getting tomorrow a blown-up 2445 that I will try to resurrect from the dead. I hope only one of the RIFA's blown up and the rest hopefully stayed undamaged, fingers crossed 🤞 Greets! Edit: if I calculated it right, 10m of coax would give a nice 50ns delay 🤔 That is actually not so bad. Edit 2: I see that an Tektronix external delay line like DL-11 is still not very cheap 😁

Were these scopes aided by some CPU or it is just pure analog electronics? It's pure magic if it is.

Hi Sir I get 2465B from my dear friend ho died from cancer few month before... i have problem with oscilloscope and for legacy and memory i wont repair.. can you help me to fine manual and anther stuff... best regards..

I don’t understand why shortening the A sweep would help with B sweep intensity. If there are separate beams for A and B sweep, it shouldn’t matter. If one beam is drawing both, surely it can’t draw both sweeps at the same time - it must draw first sweep A and then wait for another trigger, delay and sweep B, so the length of sweep A shouldn’t affect the intensity of sweep B in this case either.

HAY

hi, how to see power on hours and cycle counts?

i don't have this kind of OSCILLOSCOPE

Can you please give us example(s) of circumstances wherein this particular tool would be more useful than a spectrum analyzer for instance?