TSP

[@thomasw6169]

"this is a nice compact unit that fits on the desk" Me: I love my 1054Z

[@pete3897]

Bravo - another gem :) Thank you Patreon supporters!

[@Thepiecat]

"I don't recommend you buy these broken" You just want them all to yourself ;)

[@BruceNitroxpro]

Andrew Drill , Now, now! Mustn't think negative thoughts! Ha ha ha ha!

[@thomasw6169]

Dont buy them ... So prices on e*ay dont skyrocket.

[@jacobamador7989]

@Cesar Zavier go away scammer! Nobody likes you.

[@fourierv2]

Thesis writing can wait for a minute, there's a new TSP video! :D

[@Graham-ce2yk]

Good explanation and discussion of the items you were fixing. I do hope that the 'parts unit' (e.g. the CDR module shown between 0:06:20 - 0:06:58) proves as interesting when you get around to it, hopefully it also proves fixable. There is still a place for obsolete test equipment as some other channels have shown.

[@frustro4323]

I love it when I pick something and repairs go like this. Good for you man!

[@glasslinger]

So someone sold a "not working" unit that originally cost probably $15,000 for peanuts on ebay when a $2 transistor fixed it. (plus of course the amazing knowledge of Shahriar!)

[@MetrologyEngineer]

Love these videos! I'm a Mechanical Engineer that loves electronics so it's always enjoyable to watch.

[@rarrawer]

This feels very comfortable to have playing in the background.

[@xDevscom_EE]

Yay, new RF magic video! I blame TSP for luring me into RF stuff now. Auch, screwing terminator body on a 1.85mm connector, not a good RF practice! :) We do want to see it open, if its not causing a full destruction. Sampling heads are still very valuable things, and a way to get "cheap" bandwidth for repetitive signals, like often used in digital electronics today.

[@tfinmoraes]

Thank you, Shahriar, I can imagine how much time and effort it takes for producing content as you do. I'd like to say that it would be even richer if you could explain this equipment architecture and some in depth knowledge about its construction and applications! I understand it is not feasible for every video, but I miss those old long videos that you explore your main theme almost as a lecture! Thank you again! Keep safe!

[@Thesignalpath]

Thanks for the feedback.

[@sivasubramaniamg7285]

I am getting addicted to this channel. It is like watching a thriller / drama movie. Shahriar (hero / detective) is going after the bad guys (broken RF transistors) like Sherlock Holmes and finally catches the bad guys and saves the beautiful damsel in distress ( Agilent Sampling head). The edge of the seat climax, when the instrument is doing self test / calibration along with a very happy endings is really exhilarating indeed. Hoping many more such beautiful damsels are in distress, calling out loudly to Shahriar to save them.

[@s8472-k8i]

You need to know how this instruments works and understand the architecture before you try to do anything. Just amazing!

[@gbiohazard]

Very nice repear. Clean and well explained. Thanks

[@benmodel5745]

Would definitely want to see an x-ray of the sampling head, much less risk of damaging the expensive bits 😬

[@BruceNitroxpro]

Ben Model , I was thinking the same thing!

[@paulcohen1555]

X-ray may damage the semiconductors inside.

[@benmodel5745]

@@paulcohen1555 TIL, interesting!

[@Leonelf0]

@@paulcohen1555 x-ray normally only damages semiconductors if they are powered (avalanche in power mosfets etc). Also, low power x-ray won't do anything (airport security doesn't kill 100ds of phones everyday)

[@paulcohen1555]

@@Leonelf0 Didn't knew that. Good to learn new things.

[@Iceteavanill]

I would absolutely lobe to see in one of these Modules if possible.

[@jordanbudhu454]

Excellent video. Thanks. Keep up the good work!

[@cougar1861]

Yes, please open one of the mysterious remote modules!

[@AissaAzzaz]

10:58 cat

[@amirb715]

you used to have a Fluke counter with Rubidium standard in it. That would work as precision reference

[@bfx8185]

Nice device indeed! But simple repair again, wondering why it failed.

[@BruceNitroxpro]

I wonder if he could make this work better, now that it calibrates?

[@richardpetre1825]

Lets see the RF goodness!

[@johncundiss9098]

'Cause if they are broken in the head you basically have no chance of fixing them.' Come on now, ain't we all just a little broken in the head? LOL Love the video's

[@nomen_omen]

awesome device

[@idooggoodi]

Hi Shahriar, Could you also explain shortly in your videos that in which section of the industry these measurement instruments have the most application? (e.g. 5G, Automotive, medical, etc.)

[@Thesignalpath]

Sure. This particular instrument is used for high-speed communication measurements such as wireline and optical.

[@supernumex]

@@Thesignalpath Thanks for the info. I agree it would be super useful if you could spend a minute or so explaining the use cases for the instruments you repair in the future!

[@jimmycrider8677]

I used that pug-in module all the time when I work at Renesas on 40 gigabit Amplifiers.

[@ChrisYSmithY]

Very good video! But I don’t think you can calibrate with the termination. You should left it open

[@SidneyCritic]

A piece of black cardboard or cloth on the desk should get rid of most of the reflection.

[@dtiydr]

70GHz, gees. Probably cost little over $100 brand new or so.

[@filipamator]

So the analogue bandwidth of the head is 70 GHz but the sample rate is much slower and phase of this sampling trigger is slighty changed from sample to sample. But how you can generate so precise phase delays? And what component is being used to sample this high bandwidth signal with low repetition trigger?

[@lmamakos]

Good to see Pooch back on the bench. Do you think the other transistor of the pair you replaced was also degraded, or would the one failed transistor affect the pair for the other channel?

[@AF6LJSue]

I would love to see what is inside one of those modules.... Please find a broken one to open. :)

[@mikemike7001]

Actually TSP #177. Had me worried until I realized it must be a typo. Shahriar is unlike Dave Jones in that he numbers every video sequentially. ;)

[@Thesignalpath]

Oops! Fixed now. Thanks! :)

[@simmydsimmyd]

@ 0:48 reminds me of my ex

[@Thesignalpath]

Ha! Well played.

[@AllElectronicsChannel]

Really nice man! Do the heads have enough dynamic range to sample a signal directly from an antenna ?

[@Thesignalpath]

The issue is not so much dynamic range, the issue is that they are extremely broadband samplers and therefor integrate a lot of noise. But also you can only see a periodic signal on them due to the sub-sampling nature of the instrument.

[@aqib2000]

What did you pay for these? Great video

[@hinz1]

What, these things go for like $20k on ebay, in good working order ;-0. A bit much for goofing around, and honestly why would I need a 70GHz sampler anyway? And then you apply like 5V by accident and "get one broken in the head" ;-D

[@ViniciusMiguel1988]

Open open open

[@fatthar4804]

Don't open them please just do an experiment with usb 2.0 and usb 3.0

[@Thesignalpath]

Even USB 3.0 can be done with some of my regular scopes. This instrument can capture data rates even beyond 100Gb/s.

[@BruceNitroxpro]

@@Thesignalpath , Wow. I really had no idea that this unit was so hot.

[@NiHaoMike64]

@@Thesignalpath Is there some common interface that's outside the reach of your "regular" scopes? Maybe HDMI 2.0/2.1 or PCIe 4?

[@Thesignalpath]

@@NiHaoMike64 The highest real-time bandwidth I have on a sampling scope is 13GHz. So anything above that...

[@mikejune8196]

Second