You must have fixed it when you took off and put back the 50 Ohm termination in the back. Statistically speaking, it being a problem with a coaxial connector is very likely on this channel.
Reminds me of the days when I was working at a plant where we built fiber optic meters of all sort. I like your videos and your knowledge, keep going! ;)
Could you give us an overview video of the insturments which you have collected and repaired over the years? I get the impresion that your homelab is one of the most impressive collections ever
Me: buy a simple used power supply to fix a similar one I have, end up with two broken ones and no idea how to fix them. Super Uber UA-camr with an x-ray machine equipped shop: buys broken high end instrument and ends up fixing it by just opening it up!
You are the most influential electronics person I've ever encountered hands down! I have probably fifteen or so instruments I brought back to life many years ago. You may have a more musical background than me. I recently watched a music oriented video that referred to harmonics and realized that there is real relation between the two. Crazy right? I wanted to demonstrate that, but thought you'd be a way better teacher than me. Let me know if you are interested, it is a UA-cam channel hosted by a PHD in music.
The reason for the coils of fiber has to do with the splices, you need to bring the splice to the splicing machine, so there always needs to be quite a bit of extra fiber in any splice box. The pigtails (fibers with connectors fitted) are usually 2 meters long, but are commonly cut down to a more manageable length depending on the application.
Interesting to see all those fine pitch quad flats but no BGA. I don't think I've ever seen a QFP x86 processor. Was this simple cost saving or there is something else to it?
2 years too late but the fan is meant to cool down the display. Specifically the led backlight does get hot. I don't use this particular model yet but I have many RF power meters (i.e. E44xyz; xy being 18 or 19, z being A or B) that have this same form factor and design.
Loose connectors and cold solder joints where a nice source of easy to fix device in my youth. Sadly it all shifts towards disposable electronics. This is why i like devices like this. If they break you still have an incentive to fix them. Nobody would recap a something like a 5 year old smartphone.
I didn't think it was even possible to field calibrate a semiconductor laser as simple as a Fabry-Perot one, unless there is some kind of active nonlinear optic in front of the laser diode inside the module.
Pornographic & Titillating material that I can't seem to stop watching. I may need to seek professional help. Until then, it feels so dang good! Thank You TSP.
Well, the repair was a flop; the kind of flop you _want_ to happen when actually repairing something. 😁 I guess it must've been a loose ribbon cable or the like. The experiments however, although relatively simple, were very interesting and made up for the non-repair. 👍😁
@@Thesignalpath it's fine we'll let you of this time. That display of overengineering made up for it. This abundant use of silicon just wouldn't fly in 2021, not with the state of today's supply chain... sigh
Shahriar's reputation is such that instruments resume operation out of pure fear.
"Oh darn - it works." :)
Oh my gosh... that thumbnail... love it... "cat scanner"
You must have fixed it when you took off and put back the 50 Ohm termination in the back. Statistically speaking, it being a problem with a coaxial connector is very likely on this channel.
Reminds me of the days when I was working at a plant where we built fiber optic meters of all sort. I like your videos and your knowledge, keep going! ;)
Could you give us an overview video of the insturments which you have collected and repaired over the years? I get the impresion that your homelab is one of the most impressive collections ever
Me: buy a simple used power supply to fix a similar one I have, end up with two broken ones and no idea how to fix them.
Super Uber UA-camr with an x-ray machine equipped shop: buys broken high end instrument and ends up fixing it by just opening it up!
ahahahhaa prety much the case ... always
You are the most influential electronics person I've ever encountered hands down! I have probably fifteen or so instruments I brought back to life many years ago. You may have a more musical background than me. I recently watched a music oriented video that referred to harmonics and realized that there is real relation between the two. Crazy right? I wanted to demonstrate that, but thought you'd be a way better teacher than me. Let me know if you are interested, it is a UA-cam channel hosted by a PHD in music.
I loved watching this video, it was very insightful!
3:00 look where the tiny fan gets power from... so bizarre 😳
Hello, what do you think about the new nanovna v2 plus 4? A full review video will be highly appreciated 😊👍
The reason for the coils of fiber has to do with the splices, you need to bring the splice to the splicing machine, so there always needs to be quite a bit of extra fiber in any splice box. The pigtails (fibers with connectors fitted) are usually 2 meters long, but are commonly cut down to a more manageable length depending on the application.
Just removing and re-plugging connectors can fix oxidation on low power connector pins that may be intermittent.
4:00 I was wondering when the two beakers of liquid were going to come into play - water cooling?
Obviously Pooch fixed it when you weren't looking ;)
Would be cool to see an OTDR at some point. Or any other optical test equipment.
Do they use those NTT Optipop fiber cleaners where you work? Those things are very nice.
Love it when things fix themselves :)
I don't because then you don't know what was the reason and it could thus most likely happen again.
First! Happy to see another great repair! :-)
2:11 Lets spend one minute of silence for botched mod wire left top corner.
Interesting to see all those fine pitch quad flats but no BGA. I don't think I've ever seen a QFP x86 processor. Was this simple cost saving or there is something else to it?
This device is likely very old, pre-dating mainstream BGA. Would have likely been incredibly expensive to reliably produce a device using BGA parts.
No doubt the cat that was in the module bay was the problem!
Shahriar, what is that "bananafy" board in front of the electronic load ?
e.g.:
www.ebay.com/itm/DC-Electronic-Load-Banana-Jack-Adapter-Board/154246499734?hash=item23e9cecd96:g:hb8AAOSwZ2FfSeuR
www.eevblog.com/forum/repair/dc-electronic-load-banana-jackplug-converter/
www.tindie.com/products/iohippo/dc-electronic-load-banana-jackplug-converter/
@@largepimping Thank you my brother !
I see someone already pointed you to the right place. I bought mine from Tindie. :)
Huge lab. I suppose, there is even a time machine
2 years too late but the fan is meant to cool down the display. Specifically the led backlight does get hot. I don't use this particular model yet but I have many RF power meters (i.e. E44xyz; xy being 18 or 19, z being A or B) that have this same form factor and design.
Magic repairs! Maybe it was the cat...
Loose connectors and cold solder joints where a nice source of easy to fix device in my youth.
Sadly it all shifts towards disposable electronics.
This is why i like devices like this. If they break you still have an incentive to fix them.
Nobody would recap a something like a 5 year old smartphone.
awesome :-)
Isn't that doped fibre?
No, I don’t see why that would be needed.
I use this guy in my lab
what the hell?! Let Shahriar go!!!
@@GeorgeTsiros lol i meant Agilent 8163A
Fixed it. Well that's unfortunate 🤣🤣
I didn't think it was even possible to field calibrate a semiconductor laser as simple as a Fabry-Perot one, unless there is some kind of active nonlinear optic in front of the laser diode inside the module.
Pornographic & Titillating material that I can't seem to stop watching. I may need to seek professional help. Until then, it feels so dang good! Thank You TSP.
Now all I need to do is follow what you say as you really talk very quickly! LOL
Dr pooch in thumbnail Forget that thesis
But, it's not fully repaired until you know why it broke.
A loose connection between the LCD module and the main board. Or a loos connection on one of the EPROM firmware ICs.
Well, the repair was a flop; the kind of flop you _want_ to happen when actually repairing something. 😁 I guess it must've been a loose ribbon cable or the like. The experiments however, although relatively simple, were very interesting and made up for the non-repair. 👍😁
Neighbours can dedected your waves
Where is the cat? i came here specifically for cat.
He was napping somewhere! :)
@@Thesignalpath it's fine we'll let you of this time. That display of overengineering made up for it. This abundant use of silicon just wouldn't fly in 2021, not with the state of today's supply chain... sigh