That block overlay of the PCB to help understand the design was *really* helpful! Thanks Dave!
@EEVblog8 жыл бұрын
Thanks, it took me a lot of hours to do that, but I thought it was worthwhile.
@RivetAmber8 жыл бұрын
Awesome idea the block overlay 100% worthwhile for me. Very nice video and teardown, Thanks a lot Dave :D
@Daniel-ib5bx8 жыл бұрын
Ya I couldnt agree more. One of the best teardowns ive seen just because you approached it that way this time.
@toysareforboys18 жыл бұрын
Holy crap that block overlay was insane!!!! :) 22:21
@jusaca018 жыл бұрын
Yeah, that was awesome! Love it :D
@Daniel-ib5bx8 жыл бұрын
This was one of my favorite teardowns you have ever done (ive watch almost every video you have posted), I learned so much on this episode. The way you matched the block diagram to the board then walked through it was phenomenal. Loved it! Thanks! More like this!
@EEVblog8 жыл бұрын
Thanks. I liked the result, will try to do more like this in future teardowns, but it takes a lot more time unfortunately.
@Daniel-ib5bx8 жыл бұрын
Well the additional effort was noticed and appreciated. Thanks again.
@vitormhenrique8 жыл бұрын
As everyone stated, best teardown ever, very good walk through the diagram blocks! Awesome!
@EEVblog8 жыл бұрын
Thanks. Worth the extra effort.
@PiezPiedPy8 жыл бұрын
I second that
@stargazer76448 жыл бұрын
Yes. Great job on this one. Thanks!
@oldreader58368 жыл бұрын
Indeed. Best teardown ever.
@Anzac978 жыл бұрын
Lots of work put into this teardown, absolutely awesome!
@EEVblog8 жыл бұрын
Yep, many more hours than usual, hence the lateness.
@TKomoski8 жыл бұрын
And how many chicken dinners ?
@marshaul8 жыл бұрын
"I'm gonna have to eat every chicken dinner in this room."
@Booreak8 жыл бұрын
This is probably one of the best teardowns i've ever seen. Very informative! Thanks Dave!
@nftmaster20508 жыл бұрын
Definitely! Big thumbs up, Dave!
@FirstWizardZorander8 жыл бұрын
I totally agree. I really appreciate all the work you put into this, Dave!
@EEVblog8 жыл бұрын
Thanks!
@floriank44158 жыл бұрын
"3.2 GHz it's practically DC" - Dave Jones, 2016
@Daniel-ib5bx8 жыл бұрын
The funny thing is the more time that passes the more true this will be
@marshaul8 жыл бұрын
"The funny thing is the more time that passes the more true this will be" Except, you canna change the laws of physics, captain!
@Lissica18 жыл бұрын
Wie ich so Bullshitsprüche nicht leiden kann! Interessanterweise kommt sowas immer von Leuten die sich mit HF-Kenntnissen rühmen und wenn man dann genau nachfragt nur Dünnschiss kommt!
@swraman7 жыл бұрын
>Except, you canna change the laws of physics, captain! I work in DSAs...this is very pertinent to me!
@iamdarkyoshi8 жыл бұрын
Dave! If you are having trouble reading laser engraved part numbers, just wipe on a TINY dab of thermal paste with your finger and rub it off. The white paste stays in the etched areas leaving much higher contrast markings.
@Coolkeys20098 жыл бұрын
That was a very very positive review and teardown of that test gear which I found slightly surprising from you Dave :-) I hope the engineers and people involved in the project are watching this video looking at their work with pride. Great video thanks for posting.
@EEVblog8 жыл бұрын
I just got an email from Siglent thanking me, they liked it.
@Willster4518 жыл бұрын
Best teardown you've ever done! Please make every teardown this detailed. I'd be happy to wait longer for them. Thank you so much!
@RandyLott8 жыл бұрын
Those photos you took with explanations were incredible. One of your best to date. You've always been the best, but you just upped your game!
@EEVblog8 жыл бұрын
Thanks.
@Indiskret18 жыл бұрын
This was an absolutely awesome teardown, so well done, so much detail. Love it!
@rong31948 жыл бұрын
Dave, One of the best videos you have ever done. It was like listening to a college lecture on spectrum anaylzers! Loved it.
@joedempseysr.33768 жыл бұрын
Dave, this teardown and explanation were positively brilliant! This is your best yet. I liked how you superimposed your segmentation of each module of the main board and traced through the signal flow. I know how much work this was but I would rather see fewer, more detailed analyses rather than quick and simple. Seems you set the bar pretty high for yourself! ;-) But try not to be a victim of your own success! One more thing: some of the viewers here may appreciate a tutorial like you used to do on Fundaments Friday. I recommend, if I may, you do one on mixers, heterodyning, and filtering. In this case, a quick mostly maths-free overview would be beneficial. Thanks again, mate, and keep up the good work! I look forward to your next video!
@Koenraedus8 жыл бұрын
I thought this was a briliant teardown Dave! I really loved the way you explained the PCB in blocks. Chapeau!
@jamieh93518 жыл бұрын
Dave, your electronics knowledge is genuinely astounding!
@dorota42988 жыл бұрын
Nice vid Dave! Deep analyze of these RF guts is always welcome. Keep doing what U do!
@danielbjohnson8 жыл бұрын
Appreciate the extra effort in this one Dave.
@andycristea8 жыл бұрын
Thank you for the overlay and detailed analysis! It was definitely worth the wait! Great teardown!
@pnjunction56898 жыл бұрын
Wow! Big thanks for the extra effort with block diagram overlay and the detailed descriptions!
@EEVblog8 жыл бұрын
Glad everyone liked it. I was curious how it would be received.
@SilverGreen938 жыл бұрын
Wow! Thanks Dave for the very detailed explanation of the functional blocks! Excellent functional overlays! Highly encourage you to make this more often! +1 :)
@EEVblog8 жыл бұрын
Thanks, I'll try.
@RachelMant8 жыл бұрын
That processor's JTAG is the header at 7:40 which you thought might be just for testing - it's the standard 20-pin ARM JTAG header. The other one just does the Spartan 6. The DC-DC immediately below the 20-pin is most likely an ADP5052 - it's a quad DC-DC + 1xLDO specifically designed to power Spartan 6's + DDR2/3. It's capable of providing 3.3V, 2.5V, 1.8V and 1.2V simultaneously with sufficient current to power even the top of the line XC6SLX150T.
@MaxKoschuh8 жыл бұрын
oh wow, this video is awesome. A lot of effort went into the illustration. Excellent. Thank you Dave.
@boyinlove2k8 жыл бұрын
Amazing filming and editing, really aided with understanding. Thanks Dave.
@zx8401ztv8 жыл бұрын
I agree with you dave, a really nice design, i love modular systems too :-D. Smart and clean sectional layout, well worth the pennies, you can see the effort and thought put into the design. Imagine all equipment designed this way, im salivating LOL.
@7necromancer8 жыл бұрын
Very good, hope to see more teardowns as detailed as this :)
@JackZimmermann8 жыл бұрын
Love the setup of this video! Great structured way of presenting it. Cheers!
@senohpi8 жыл бұрын
Thanks for the video Dave, i just may end up with one of those SSA3021X on my bench in the near future.
@alextrofimov79478 жыл бұрын
I absolutely love this block diagram - real PCB - type of explanation :-)
@kaizen94518 жыл бұрын
Thumbs up for the circuit overlay. If we can get this for other videos then brilliant!
@EEVblog8 жыл бұрын
Things like scopes are not so exciting, not as many building blocks to analyse.
@marcorizza2748 жыл бұрын
That block analysis was great, thanks a lot
@Speglritz6 жыл бұрын
Fantastic video! Loved your block analysis
@sidlinger7 жыл бұрын
What a tremendous effort and excellent result on this video. Thank you!
@aussienetwork38598 жыл бұрын
BEST BLOODY DISASSEMBLER I KNOW!!! Love your vids
@gn_ghost47577 жыл бұрын
This video is so GREAT!!!! Really nice explanation for spectrum analyzer.
@arthurstraizhys8 жыл бұрын
Wow Dave, this video is incredible! Much respect!
@arthurstraizhys8 жыл бұрын
P.S. Videos like that remind me exactly why I got into electronics:)
@redshift788 жыл бұрын
Nice video ... liked the city tour on the circuit with road signs :-)
@bitrot428 жыл бұрын
Great teardown! Interesting that there is an Altera FPGA on the back side.
@BMRStudio8 жыл бұрын
For me is still woodoo.. Thank You Dave for open and show to Us. We again learned a lot! Lot of woodooo at least :)
@jdennee8 жыл бұрын
Fantastic video, great job Dave!
@gork428 жыл бұрын
The final IF doesnt necessarily have to be in the 0-20MHz range; the ADC can undersample a different nyquist zone provided an input with appropriate passband filtering. I'm not suggesting they do this, but it is certainly possible. Great teardown video though from Dave, thanks!
@Antiath8 жыл бұрын
Great video ! Lots of useful info in there. Thanks Dave.
@PlasmaHH8 жыл бұрын
I have always wondered why they start at several kHz, from a design POV. This means I need one specifically for when I want to do some audio stuff, unless I have one of the super expensive 20Hz - 20GHz R&S ones
@ComplexPole8 жыл бұрын
I suppose that's done because the phase noise becomes too great for general use below a few kHz.
@PlasmaHH8 жыл бұрын
Aars Haar maybe too great for the price target... R&S ones go down til 2Hz ...
@ComplexPole8 жыл бұрын
Dennis Lubert I wish I could say I knew more about spectrum analyzers. I suppose they must be applying a trick to get down to 2Hz (which kind of blows my mind), maybe two signal paths for two halves of the total frequency range?
@PlasmaHH8 жыл бұрын
Aars Haar I never looked too much in detail into them, maybe I should next time I have that opportunity
@adnan28 жыл бұрын
Great teardown Dave! I loved the way you went thru the entire signal path. The part where you mentioned that the final IF frequency being less than 20 MHz is not correct. There is a phenomenon called "subsampling" where the sampled signal is at a higher frequency than the Nyqusit frequency. However the bandwidth of the final IF signal is less than 20 MHz, which is probably much less than 20 MHz since resolution BW of this SA is specified as 1 MHz.
@Kosmonooit8 жыл бұрын
Excellent work Dave!
@VikasVJois8 жыл бұрын
I like the new format of explaining the whole signal path. Could have been better if you could point at things. When you mention a part descriptor, it takes a little time to locate it by eye
@EEVblog8 жыл бұрын
Yeah, that's one downside of this, it's not easy to poke. I'd have the screen capture instead and use a big cursor. But then I wouldn't get the nice zoom feature which is done in edit.
@kelli2178 жыл бұрын
Is it possible that they found a way to optimize the VHDL core file that goes on that big Spartan FPGA such that they were able to eliminate the missing components discussed at around 8:00 and pack them into the FPGA, but it was late in the design process and redesigning the board would have to wait until the next revision?
@EEVblog8 жыл бұрын
Good point, because it would just be shaping the IF signal that goes into the ADC and FPGA anyway.
@SaeligCoInc8 жыл бұрын
Great teardown, Dave!
@electronicsNmore8 жыл бұрын
Dave, just wanted to let you know that you forgot to add the link at 0:08 when you said, "click here".
@alantong61218 жыл бұрын
Thumb up on the datasheet linking 👍👍
@freelancer9178 жыл бұрын
good job explaining the RF section!
@etmax18 жыл бұрын
They probably dropped the input protection because its integral capacitance interfered with the unterminated input BW linearity. At GHz it's damned hard to get a flat response with peaky capacitors (ie diodes) in circuit when there's no 50Ohm termination.
@alantong61218 жыл бұрын
Agree
@TRoweNation8 жыл бұрын
Great tear down video! Can you give us a tear down of the Keysight N9030A PXA so we can see a comparison to some of the higher end spec'an gear?
@AlanLiefting8 жыл бұрын
I remember a spectrum analyser at polytech back in the 1980s. It was the size of a small bus.
@etmax18 жыл бұрын
I'm amazed how cheap the Chinese get milling done compared to casting when you look at the west. I worked at an RF company that was designing a satellite receiver and they talked about paying $800 for a one piece milled enclosure in low qty and $400 in small quantities yet getting investment castings done was viable at 50 pieces. They must be getting the milling done REAL CHEAP. Also I suggest you use cotton gloves when doing tear downs as touching the aluminium causes almost immediate corrosion with skin oil contamination. This then in turn makes for a poor RF connection when it's reassembled.
@rhysd54108 жыл бұрын
aluminium oxidizes immediately on contact with air. No touching required.
@etmax18 жыл бұрын
Rhys D Yes that is true but the thickness of the oxide layer is heavily dependant on the chemicals present. If you touch it with your bare hands you increase the thickness and chemical nature of the oxides depending to some extent on your biology and skin temperature. It makes a difference for RF seals where 1 Ohm is 2% reduction in conductivity. Companies don't like to waste money on unnecessary thing so they wouldn't buy gloves unless they made a difference.
@Arni1428 жыл бұрын
I like the photos you use in this video!
@DavidNadlinger8 жыл бұрын
Aren't things slightly mixed up in the explanation starting from 27:30? Unless I'm mistaken, the reason for the multi-stage design is not primarily the need for a higher IF. You could use an IF of, say, 5.1 GHz in a single-stage mixer design just as well. It's just that doing narrow-band filters at that high frequency (for, say, an RBW of 10 Hz) is rather difficult, and of course an all-digital IF stage would then be rather impractical. Thus, you just have a pre-filter after the first mixer, but then mix down again, filter again, etc.
@jarodwhite1818 жыл бұрын
Wow! Great Teardown!
@TKomoski8 жыл бұрын
Great review Dave of the new Siglent SSA3021X. Nice to see you finally got one to review, I'm sure Siglent will be happy with the results. And us radical fanboys will be rushing out to get one. So I look forward to the next installment of the EEVblog. CHEERS !
@LeapFrog_Radio8 жыл бұрын
Don't kid yourself, likely Siglent sent this unit directly to him, I could imagine Dave has a lot of corporate insiders backing him for publicity. "And us radical fanboys will be rushing out to get one." Doubt it, that unit costs over $ 1,500 new who rushes out to spend that kind of money?
@TKomoski8 жыл бұрын
I would if the price is right, but due to me living in Canada. The taxes, exchange rate and import charges would make the price double. I bought an Signal Hound SA44B from the US on Ebay @ $560 USD my landed cost was $964 CAD. But it seems like a nice bit of kit, I like to wait for 6 months or more to see other reviews. As for my comment as towards radical fanboys, I watch too much American politics. Cheers ...
@LeapFrog_Radio8 жыл бұрын
Very good, yes the politics oh my!
@davegcffo4 жыл бұрын
Thanks Dave very useful mine came with a loose fitting faulty headphone jack plugging in an audio 3.5mm for a headset very loose fitting and almost useless contacted them via the agent they said it was a standard 3.5mm only option was to repack it it and send it back I only had it for 5 minutes so decided to do it myself your video was very useful love your vids buyer beware of this model if deemed important Dave UK
@sladjanavlijas2955 жыл бұрын
Hi Dave, thanks for great video :). I want to discuss about 49R9 resistor (23:43), and what is purpose of this resistor. This resistor is protection resistor, and SA will switch input this this resistor to protect input path from large signal (Am I right?). All other component in input path has 50 Ohm impedance, and no need for extra resistor.
@hobodozer8 жыл бұрын
I would quite like to see you design your own spectrum analyser, or any other type of test gear for that matter.
@EEVblog8 жыл бұрын
I'd suck at designing a spectrum analyser, RF design isn't my thing.
@hobodozer8 жыл бұрын
Anything other than RF then? I've been on the hunt for open-source lab gear and I feel like you'd be the perfect guy to design some.
@mRtUnBabY3 жыл бұрын
Thanks and Recommended for all
@etmax18 жыл бұрын
The obsolete Hitite parts may only be so because Analog Devices bought them out and the naming is in flux. They are probably changing it from Hxxx to ADxxxx :-)
@costa_marco8 жыл бұрын
Awesome video. Thank you.
@ElmerFuddGun8 жыл бұрын
5:59 - Crooked IC U104... everything else looks squared up but not that IC.
@irishRocker18 жыл бұрын
5:30 - 5:40 "nothing exciting unless SMPS float your boat, dead giveaway with the inductors" Or....Dead giveaway with the SMPS silkscreen labels! haha :P
@Zetex20008 жыл бұрын
™Siglent Rust
@MarcinKurczalski8 жыл бұрын
It's both trademark for feature and colour- just try using one in your product and surely you're gonna get sued!
@DAVIDGREGORYKERR8 жыл бұрын
I think that the system will run really when you 16384bins rather than going any higher which causes it to slow down, I just wonder why they could not have used a A10-7850k to process the data and they would have to have any more graphics hardware as that would be on the A10-7850k and they could have written the firmware in ASM80586 for the A10-7850k, why did they not use a quadrature phasing mixer which which would be able to convert the RF to AF (direct conversion) thing and give a nice clean output.
@AlanLiefting8 жыл бұрын
Dave, there are no zeds in "chassis". Bloody Aussies! (Said Alan from NZ.) :-)
@blank79218 жыл бұрын
Is that a micro SD slot at 5:01?
@alperenalperen24588 жыл бұрын
Many of the thick traces on rf board( presumably 50 ohm rf traces) have their solder or/and silkscreen removed on them and around them. Is it a common practice in RF design. Also all of the distributed component filters or matching circuits dont seem to have solder resist and silkscreen on them. Is it neccesary to do that when designing Rf board? Do silkscreen and solder resist have huge impact on the charateristic impedance pf the trace and distributed component?
@MartinKL8 жыл бұрын
it's easier to get consistent characteristic impedance with no solder mask. Slight changes in soldermask thickness would change the impedance of the trace. Soldermask may also change over time due to environmental conditions.
@alperenalperen24588 жыл бұрын
Thanks for the response. In this particular device the solder mask around the paths are not removed all the way down they're just removed from the sides about the twice width of the line. Is there a rule of thumb for the size of solder mask opening around the path?
@camtheham138 жыл бұрын
Do you shoot the actual teardown portion on the Tagarno?
@Jonas_Meyer8 жыл бұрын
Great video.
@MatthewSuffidy8 жыл бұрын
I've tried to understand quadrature decoding, carriers, Fourier transformations, and intermediate frequencies, but I am still confused. Some day, I don't know.
@matthewkriebel73428 жыл бұрын
Me too. Every time I think I have a superficial understanding, I try to apply it and find myself confused again. Should have taken more EE classes. Maybe studying more ham radio materials will help.
@MatthewSuffidy8 жыл бұрын
I always resisted against the idea that really everything comes from sine waves, so things could come from triangle waves for example. From the point of view that everything is really sine waves, a triangle wave for example has many frequency additives to make that resultant waveform. Quadrature sort of makes sense then because at a single instance a cos and a sin interpretation of a signal is made together, and then more data in time. So I was confused how it seemed arbitrary what was being sampled, but with data in time, it is relative and meaningful?
@MatthewSuffidy8 жыл бұрын
Also I was worried that carrier encoded data would in fact collide. You can say in a frequency graph there is a space between the channels where the data encoded is. That is my understanding. It seems a carrier vs the data is almost so arbitrary that it would go everywhere.
@GodzillaGoesGaga6 жыл бұрын
Maybe this will help. m.kzbin.info/www/bejne/gqvRm3ZqgdRqoqc
@MartinPHE8 жыл бұрын
this the click here belated April fools? Liked the block overlays
@markforster49846 жыл бұрын
What is the total value of all the gold in this thing ?
@RoyvanLierop8 жыл бұрын
A RF capacitor can act like a inductor when it's connected by a quarter-wave line. Does anyone know more about this?
@RicoElectrico8 жыл бұрын
Smith chart will help you understand ;) Mark a capacitor's reactance and plot an arc corresponding to a quarter wave line. Now, because you have made half a revolution, you're on the other half, with opposite sign of reactance.
@khronscave8 жыл бұрын
The mains filter cap being a Lelon isn't THAT bad, but there's one on the secondary too - WHY?!?! >_
@lasersbee8 жыл бұрын
1:33... No it is really easy to see... it must be a feature at that price :/
@robby77298 жыл бұрын
Is that Micro Sd slot by USB port?
@jotaemebee8 жыл бұрын
yep, close to the future resistive touch flat flex cable connector xDD
@robby77298 жыл бұрын
+Jotaemebé thanks
@pedro10668 жыл бұрын
they should have put a z before the X then it would be the ZX Spectrum Analyser!
@TheJunkonwheels8 жыл бұрын
now you void your warntie on that Spectrum Analyser or have you get it for free
@EEVblog8 жыл бұрын
I goes back to it's owner.
@iandraper21972 жыл бұрын
If DC is so bad for Spectrum Analyzer, why are DC blocks not built into the unit?
@666Tomato6668 жыл бұрын
Oh, I'm not so sure it's "practically DC" if you have to use GaAs components...
@BMRStudio8 жыл бұрын
I missing only one label from the back cover... Yolo!,,,, :))))))))
@JoshuaNicoll8 жыл бұрын
Didn't let it fall down again haha
@ribb42007 жыл бұрын
Siglent Mona Lisa electronic art.
@Martini_GP3 ай бұрын
shaziiiii 😂 thank you btw
@Landes1024rs8 жыл бұрын
WOOOOO
@neohelios778 жыл бұрын
Hi Dave, Long time lurker, and I love your channel! I have a question if I may have a moment of your time. My son has begun to take a larger interest in these DIY kits available on Amazon (ie. ASIN#B0130LKYWE, B00XXZB5LW), and I was wondering what your opinion was on these for learning electronics. Myself, I recall the old "spring-based bread boards" from back in the day, but these kits seem to have great potential. Do you have any suggestions in particular for these kits, or possibly a recommendation for an "actually useful" DIY o-scope kit? Thanks in advance!
@Gordonseries385 Жыл бұрын
👍
@ryux8 жыл бұрын
Winner, Winner, Chicken Dinner
@МиланПавловић-ф3т8 жыл бұрын
I hate BGA chips!! This is a shame for electronic industry!
@luto20008 жыл бұрын
BULLSHIT ALERT: has anyone heard about "wireworld" cables? they sell all kinds of ultra expensive cables, i'd love to see Dave crush them with some hard science!!!