EEVblog

[@SuperBoobaloo]

Just been viewing some of your earliest vids, Dave, and it's amazing how much your presentation style has developed! Thanks for helping me learn so much about Electronics.

[@RiderLiving]

Man teardown Tuesdays are the best Tuesdays :D. Always look forward to this. Keep up the good work! Your channel is simply amazing

[@flubba86]

The switch-off-lights-to-fade-out effect worked surprisingly well there at the end! Well done!

[@EEVblog]

I google some part numbers as I find them but that's about it. If I researched it first you wouldn't see me getting the mixer or local oscillator mixed up. So I was rambling and guessing as I went.

[@gamccoy]

Sweet bit of kit, that. As well as you explained the traces at RF, it is still a mystical beast. RF engineering is the last bastion of true art in the industry.

[@EEVblog]

Doh! So it is, thanks. Annotation added. Looked like a relay, should have read the designator (U) or looked it up. I was not expecting a packaged mixer.

[@MickOhrberg]

The return of the Whistling Dismantler!

[@EEVblog]

Of course, you can do anything if you have the resources or money!

[@JamesGibbard]

Thanks Dave. I'm revising for my RF and microwave exam so it was interesting to see the microstrip filters in an actual product, instead of just a textbook!

[@peterkinnear01]

I think the Blackfin has the MAC on die, but not the phy, so that's what the other little chip is. Great Job on the review :)

[@JosefdeJoanelli]

I think that QFN near the input, with the etched top and all the resistors attached, is a digital step attenuator, maybe from mini circuits? I've used a couple in a project at uni, the resistors set the startup attenuation value, and the attenuation is programmed serially thereafter :)

[@Kilohercas]

TL072 is for diode bias switching by the looks of it, it is always near sot-23 diode (in some cases)

[@FXGreggan.]

@23.42 , its a mixer, not a relay... fyi :)

[@heavymetalgaming7145]

I love how you call the laser etched chips "bastards" haha. Also, I was thinking they did the bandwidth filter that way(unnecessarily in this particular device) so they can keep the general PCB design the same for future additions and improvements in the spectrum analyser. It may not be necessary in this edition of it, but will be when it is upgraded to a newer edition. That way they don't have to re-manufacture the PCB thus making it more cost-effective.

[@ryansoh333]

Awesome! This would be amazing for the LPF community! (Seriously, this guy is one of the most respected members of laserpointerforums.)

[@geraldchouinard6576]

I remember this video post on the review of the Rigol DSA 815 TG Spectrum Analyzer. I bought one a couple years ago and I have been quite satisfied with it except that lately, the clock has started to run intermittently at 1/8 the normal speed. It does not seem to have upset the normal operation of the analyzer but it makes a mess of the date and time of the stored files that I transfer on the USB memory device, besides the fact that I cannot rely on the clock on the device. Recently, I found a Rigol Web page where one could ask for an updated version of the firmware. Thinking that this could solve the problem, I sent my request and never got any answer; no very good in terms of customer support ... Do you ave any suggestion as to a way to cure this problem or a Web site where I could get some support and answer from Rigol? Thank you.

[@michelfeinstein]

I think the teardowns are great, but I would like more lessons and tutorials as well :D

[@NerdNordic]

Awesome teardown Dave! Thanks! :-D

[@joopvandervelden1033]

The lasered chip is probably a fast A/D converter like a LTC2216

[@mrstijntje]

From the JTAG header, one could auto-analyse the JTAG chain to see which ID codes come back. Some of the lasered IC's might be in the test chain right?

[@CampKohler]

If the supplier was REALLY cool, you would have found inside the cast box a little piece of paper that said, "Hi, Dave."

[@pychneag]

nice teardown. It would be good to see the device in use with some practical examples. At this price point, besides bandwidth, what features are missing compared to more expensive spectrum analyzers?

[@DaveCurran]

Those rf magic pcb traces and ground stitching remind me of level maps from repton and lemmings!

[@dt1045]

Old post and so hope someone is looking... I might have damaged the Tracking Gen by soldering a coax to a Return Loss Bridge unit without disconnecting from the powered up DSA815. I used an old Weller PS20 Station. Late Night and tired!! The RLB doesn't seem to be doing what it should anymore. Could the voltage from the solder iron kill the scope??

[@gzxiao2539]

I have a question i can't find the reference clock of the LO, we can find the vco and pll,but where is the reference clock,how did it produce a sweep source

[@Flordeliza32]

Thank you very much for your videos! Some years ago i used a HO 8753D VNA. I was able to measure SWR directly with it. Is it possible to do samething with this unit?

[@msk19991]

lol I always grin when I hear the speed-up whistling

[@Tjousk]

You didn't mention DaveCad when you were showing the block diagram, are you using something different now? :P

[@1975RStefan]

Is the pcb soldered pb free? It would be a point of intresst, because pb free soldered pcb's are not really the best choice. I analyzed a defective pcb of an electronic ballast for HID light sources, this was soldered with Sn99Ag1 solder. It was intressting to see, that a lot soldering points lost its mechanical stability. Around the solder points I saw a lot of tin whisker needles on the tin surface.

[@EEVblog]

Umm, it's called Teardown Tuesday, so there is a teardown every week. If I do say 3 videos a week, that means 33% will be teardowns. Don't like - don't watch.

[@michelfeinstein]

Dave, could you make a video explaining the difference between an oscilloscope with FFT and a spectrum analyzer, and when to use one or the other? thanks!

[@michelfeinstein]

Dave, why so many exposed chunky rails? They dont seem to be for testing, because all the testing pins are labeled...

[@DracoXul]

I want to know about the wiggly traces next to the spartan as well. Any ideas?

[@EEVblog]

It's in pieces on the floor!

[@Shawn_White]

he says on his channel that the best way to contact him is by email. his email is on his channel. I look forward to seeing the teardown of the argon laser.

[@Desmaad]

Why was there no mask on the distributed element filters?

[@WakeUpWolfgang]

Dave can you do a video on reverse engineering? Nothing this big but something smaller like a PSU or a charger for the Transformer eee pad. I took apart the wall wart for the TF101 Transformer and I was surprised at the amount of stuff in it. I would like to reverse engineer it so I can make a battery version of it so I can charge it on the go.

[@robertbackhaus8911]

Those lasered chips could be unlicensed clones of proprietary TI, AD or similar designs. but without the OHL logo, who'd know?

[@ableite]

15:18 are these tracks made of gold or copper?

[@202Electrics]

how is it that this one is not in my feed page?

[@travpark8163]

Could you do a tear down of an el-cheapo PSU vrs a quality PSU?

[@DaedalusYoung]

You may have "View" set to "Highlights" instead of "Everything". Stupid KZbin keeps changing that back. I fixed it by making the associated cookie permanent.

[@FooBar89]

There is a typo in the title of the video :) or maybe it's good enough for Australia? :)

[@EEVblog]

If you have something more interesting for me to tear down, then send it in.

[@MelroyvandenBerg]

28:50 I guess it's some kind of heatsink xD?

[@TableAvocado]

Do you put them back together?

[@pigpenpete]

Its to keep the traces equal length on a parallel bus

[@powercord123456]

at 5:23 you can see the traces coming down to the spartan are wiggly, why is this?

[@Codewalkers]

Does shielding work for ghost interference ?

[@googlemyharbl]

I would like to see inside a network analyzer

[@LuizCarlos-wc1le]

Power Saver (saving electricity) Show what's in it! thank you.

[@michelfeinstein]

hahaha true! Dony worry...with time you will get all the resources to tear down ;)

[@AntiProtonBoy]

What's the wallet damage for something like this?

[@EEVblog]

Just a cheap set from the local hardware store.

[@arcadeuk]

I wonder what is so secret about the ADC that it's the only chip they feel they need to hide the identity of?

[@mccunecp]

Ha dave I have been watching your videos for a few months now. could you do a video on different test equipment. from the high end to the low end. I just boughht a cheep capacitor meter, now looking to get a esr meter but those at the cheap end are still about 50 to 70 bucks...and I like to get a scope also but men those are pricy. so I like to see a video on hight end and low end test equipment. thanks

[@rainbowsalads]

why would they etch out the name of the chip?

[@pippaengroda]

the tampon-symbols are awsome ;)

[@azyfloof]

Don't take it apart, turn it on! :P

[@00101110o]

Anayser?

[@NerdNordic]

13:24 Dave´s Sagan voice xD

[@qwertztrewqfull]

That was Rigol :)

[@EEVblog]

I accept zero responsibility!

[@Hellsslave666]

YES PLEASE!!!

[@RandyLott]

That doesn't seem all that bad for a spectrum analyzer.

[@elisheffer6049]

You looked kinda sad at the start..

[@Deckardsvr]

No Kidding ?!

[@msk19991]

8 people don't know what spectrum analyzers are.

[@EEVblog]

$1500

[@lllBOLTlll]

very impressive. i hope to be as cool as you one day

[@EEVblog]

Send me an email

[@sidpryce]

are you a ham by the chance ?

[@Oshiba88]

@ 6:02 why eveyone who hiddes the chip serial number a bastard?

[@bloomtom]

Every time you said "DSP Processor" I cringed a little.

[@OK2BCK]

WANTZ

[@lodevijk]

It's all teardowns lately, they're all mostly identical! Dave, you're getting lazy!

[@megasmart1337]

wassup, 1 dislike LOL

[@jingjilau6579]

hahaha chinglish2333