Vložit
- čas přidán 3. 08. 2024
- In this episode Shahriar reviews the top-of-the-line Tektronix 6-Series Oscilloscope:
www.tek.com/oscilloscope/6-se...
This 4-channel instrument offers 8-GHz of bandwidth at 25GS/s on all channel independently. Tektronix has made great strides in offering low-noise front-end custom ASICs combined with hardware digital down-conversion built into the core of the 6-Series. This enables advanced triggering across in both time and frequency domains as well as multi-domain correlated measurements.
This review is organized as follows:
00:00 - Introductions
01:42 - Instrument design, front and back panels
03:34 - Full acquisition board teardown, analysis and architecture
18:11 - PLL Experiment: Spectrum View, advanced triggering, PLL characterization and debugging
38:33 - Backplane Communication: Jitter analysis, eye diagrams, jitter composition, cross-talk
49:24 - Concluding remarks
The Signal Path
www.TheSignalPath.com
/ thesignalpath
www.Patreon.com/TheSignalPath - Věda a technologie
I wrote some of the RF trigger code, always like seeing someone impressed by it. Was one of the funnest features to develop.
Awesome!
Bonus having those two unpopulated channels to allow us to see the layout.
My wife won't understand the goosebumps I get watching your video and your explanation!
Great content and quality as usual Shahriar. Great to see video content on phase noise and jitter experiments. Can't wait to see part 2.
To make so many measurements simultaneously in time and frequency domain is just fascinating. Great content on PLLs too! I have always wondered how to measure phase noise in a meaningful way. Thank you so much for all your effort, great content!
What a beast, i love these reviews of "if you have to ask, you can't afford it" type of equipment
New Signal Path upload! New Signal Path upload!!!
Alas, I die just a little more inside each time I don't see Phased Locked Loop in the title. Oh well, I guess I'll Like it anyway. 😉
Seriously tho, thank you for all of your efforts put into teaching others.
There is some PLL in this one! :)
The VGA port in the back is really good for hooking up to my old black-and-white TV
If you start the table of contents from 00:00, CZcams will automatically add chapter markers and titles to the progress bar
Yes, I do this with my videos now, works great.
Amazing! I have to try this. Thank you.
@@Thesignalpath Another trick making life easier: when you edit the video, add markers to the timeline, and then export them to an EDL file. It is a simple text file, which can be easily converted/edited into the table of contents. You won't have to go through the video again just to write down the timestamps. Each time I edit a video, it saves me a lot of time.
It's one of the (rare!) times that CZcams has added a feature which is actually useful. I use it on all new videos and maybe it's worth going back over some of the older ones too.
@@video99couk I don't know if there has been a subtle shift in the algorithm, but I went back and added it on some of my older videos, and engagement for those videos increased the next day for a few days.
Excellent presentation. Excellent details. I subscribed for more, more of everything.
That said, the cost of your equipment is out of my reach by several decades.
Programs like this teaches me new techniques and test types.
I can only afford 80's and 90's vintage test equipment.
This was fantastic! Thank you so much.
15:15 The 6 Series B was just announced. The MSO68B is the 8 channel model, in addition to the MSO64B 4 channel and MSO66B 6 channel models.
Amazing instrument. Want one!!
This was awesome! Thank you very much.
Oh man, talk about attention to detail... 10% trigger button is SO handy, and exactly what I want 90% of the time.
It’s fantastic to see that controlled ESD measures are being followed.
Super awesome devices, man, I can't even have these devices in my dream. :)
This is next level
To think you can get it in a typical scope form factor, and a screen-less high density, 2U rack based version too. They've though of everything. :)
Love your videos.
Thank you.
As much as i absolutely love this, i cant really think of any part of my work that would benefit from most of those features. I mostly design NFC readers and some SBC (mostly for payment or ticketing applications) and in that field, those kinds of measurements are not really needed.
Still it looks like a very useful and well made piece of equipment, that would be useful to people who need it. Thank you for showing stuff like that on youtube, its always really interesting to come just a little bit closer to equipment like that.
Dear Santa...
;))))
Santa with quite deep pockets... 26k to be more specific.
Hmm. Im thinking "dear Satan" 😋
Just amazing to see what's inside such a sophisticated tool.
I have one of those PLL EVK from Hittite and was wondering how to use them since sometime. Its software is fancy though!
Amazing
I hope their marketing plan is to run this head-to-head against the Rigol 1054Z! :-D (please, oh please, oh please!)
Great to see the types of interference and the effect on the eye and the freq/amplitude spectra. I wasn't sure how you generated the interference? Was the overlayed "amplitude" signal generated from cross talk from the adjacent channel and the frequency was from the BERT itself? Did you modulate the clock coming into the BERT for the frequency issues?
Anyway, nice to see you bring out the BERT!
Engineering at its best
"2020 is a great year...
to buy oscilloscopes "
Nice
Nice as always! In one of your previous videos, you mentioned that you might someday be able to make time interleave adcs video. are these plans still valid? What are the limiting factors of this technique? What should i look at to lats say, build 1gsps adc from 10 100msps? How to characterize adc and it T&H? Digging through this i found patent US7978104 on digital compensation. Are such methods still relevant?
When is the giveaway of this scope? Consider this my official entry.
Nice MSO
Could it be those apparent trace disconnects you were musing about on the empty channels @ 14:14 or thereabouts were done to prevent any antenna effect or noise coupling in ?..with no chips installed they would seem like un-terminated lines which might impact the active channels...just musing myself...great job as always sir
Looks nice, maybe available on ebay for cheap in like 30years ;-)
Judging by how well other test gear of this caliber holds its value, "cheap" may still be thousands.
That will happen... My 1980s Tek 7000 gear cost more than a nice house when new, now a few hundred...
Base price £23,200 in the UK!
You are great. Just I start to look for an oscilloscope (Tek 5 & Keysight MXR), here I have notification with Tek 6 series. I would like to compare this with newly released Keysight MXR series (12bit Vs low noise 10 bit)
According to official specs Tektornix ENOB is 8.8 compared to 9.0 in Keysight. Tek wins in bandwidth, Key in acquisition, also Key has 8 channel model. But what really sells me to Keysight is their beautiful phosphorus-like signal imaging with smooth gradients that gives fast insight how particular signal really behaves in dense areas.
Tek ENOB is 8.2, Keysight 8.2. Tek will win on noise, ~ 30-50% at 1 mV/div. Keysight standard record length is greater, but Tek maximum is 2x greater. The MXR is a great scope, rest assured; however, the Tektronix still has the edge in most physical performance metrics and once you get into software/analysis, like Spectrum View, Tek runs away with it.
Wow 4 channel oscilloscope
I'm really starting to DISLIKE watching TSP videos...
I keep seeing amazing equipment that I would LOVE to own, but I also know that I NEVER will!
P.S. Keep up the great work kind sir
The package technology of the acquisition ASIC reminds me of IBM stuff. I wonder if it might had been made by GlobalFoundries?
It's possible that the reason they didn't go with HMC memory is that Micron no longer offers the product. But then DDR is easier to interface anyway.
Oh look at those two flat screen televisions behind him with oscilloscope attachments on them.
10:50 well, I think the solid state relay is switching de AC coupling capacitor and the electromechanical relay selecting between 2 input attenuators
This instrument doesn’t have a solid state relay on the front-end.
Ok, I just assumed the 4-pin SOP package near the capacitor in the low frequency path was a solid state relay.
Keep up with the good job!
Saludos desde Argentina
Way above my needs. I think this is alien technology.
👍
بسیار عالی اسکوپ های قدیمی و مین فریم رو هم تحلیل کنید
When you buy one, do you get a concierge and a nice lunch? And here I am with my Tek 2236 100 Mhz...
If you're in Texas and want to buy one, yes, it'll come with a free lunch, just let me know :)
I have a 5 series, but may move back to Keysight as the 89600 VSA software will work on it. Still very nice scope though.
The Tek SignalVu-PC VSA software has been enhanced to support the 5 and 6 Series oscilloscope platforms - will be released very shortly...
Good heavens, the 5 series seems like it was released only yesterday. Guess scopes are becoming like mobile phones.. :)
At 13:38, they have two southbound differential pairs from each TEK061 chip, but one pair has no soldermask and the other has. I guess the one that has no solder mask is for high-speed differential pair since those solder masks potentially introduce extra dielectric loss. My question is, the two chips shown in the video share the same footprint, but one chip uses the left diff pair for the high-speed signaling, but the other chip uses the right diff pair. what is the purpose of the other diff pair that has a solder mask on top?
@wiatt: if u were involved in dev of this scope pls consider making a vid on some unique features of this scope. That would be great, especially if you are as cute as the guy from tsp
Quite surprised at the apparent lack of equalization support.
Do they have de-embedding and channel emulation, at least? Is it possible these are extra-cost options that just aren't included in the demo license you got from Tek?
It's a new platform, these tools that have existed on the 70K platform haven't all been ported to the new platform yet.
Haven't seen you for a long time......
14:05 first I though that these gaps in unpopulated channels are probably just connected with a simple jumper when channels are populated in a higher end model. But then I thought, why didn't they broke traces closer to the ADC then? Why do they want traces to go under the shield? Also remember that the shield is not covered with emi absorbing material on these unpopulated channels.
In your first experiment for the 2.4GHz signal and PLL. You drop the sampling rate below any usual recommandations. Your frequency marker read about 1GHz, instead of 2,4GHZ. Which is expected as you sampling rate is at 3,..GSa/s why did you do that? Does it would not influence your measurement to not sample your frequency at the right sampling rate?
When the DDC is engaged, the memory access is split between the time domain data and the baseband IQ coming from the DDC. This means that the sample rate of the time-domain samples is reduced. However, the full sample-rate data is applied to the DDC input, so there is no loss of timing resolution and Mr. Nyquist is kept happy...
Couple kidneys with bnc connectors
The line for the 1 MOhm path was so thin that it was too hard to see at first.
Is that Symmetricom unit below the scope new? I don't remember seeing anything from them in your videos.
It’s something I’ve picked up from eBay.
And here I was thinking I was clever by using my PC's 'sound card' to simultaneously measure the voltage and current of a device under test to create impedance and phase charts for audio speakers, crossovers, or similar devices... o.0
Is the spectrum analysis in this scope completely in digital signal processing? Or is there an RF section that was not shown on the video? My guess is it is fully software (with hardwired DSP) because I did not see any signal split around analog frontend that would feed into an RF section.
The DDC is fully in digital domain.
The 12 bit samples from the ADC are applied to the hardware-based digital down-converter - all done in DSP.
Would you have details on the Hittite PLO board
What is the lowest frequency that jitter measurement can be done ?
For time expansion in RADAR need low frequency.
The advantage of the DDC - long term RF capture is possible. As the acquisition BW is reduced, the IQ sample rate is reduced, thus longer data records can be acquired.
After watching the video, I have some questions about the spectrum view feature of these scopes. I wanted to ask if someone maybe can help me out.
I was surprised how the spectrum view function worked, because I assumed that an FFT is used (due to the selectable window), but the behavior doesn’t match with what I would expect in this case. After some googling I found an article to the Tek webpage which shows that a digital down converter is used to move the center frequency of the spectrum to 0Hz before the FFT is processed. Is it correct that signal must be bandlimited beforehand for this to work?
When I look at the block diagram on the webpage both the time domain and the frequency domain signal processing pipeline receive the ADC data at the full sample rate. The reduction of the sample rate when using spectrum view with a wide span is therefore only due to limitations of the acquisition memory?
Thanks for any help.
Tek Website:
www.tek.com/document/application-note/spectrum-view-new-approach-frequency-domain-analysis-oscilloscopes
Yes, the limitation is on the acquisition memory side.
How can a 8 Ghz scope have BNC connectors? Aren't those only suitable for lower frequencies?
These are not traditional BNC connectors. They have a BNC form factor, but optimized to operate up to about 10GHz.
That gear have one important issue for me. The price :D
I wonder how much all the equipment behind you is worth? Easily over million?
I think a million is a little too much. Maybe 50k to 200k. Maybe not. Maybe a lil bit over a million.
@@DoctorThe113 Starting price is from 25 000 EUR. But all additional functions are additionally paid.
@@misyogi all the equipment *behind him* has a starting point of 25K euro? 😂
@@DoctorThe113 Sorry, I understood it in the opposite 😂 Yes, behind him is for sure > 100k.
@@misyogi I can feel you. I thought the same thing too.
Tektronix is still one of the King Pins in the scope wars. You don't do a scope design like this on the back of a napkin ;)
27:33 How/Why can you sampe a 2.4GHz signal at only 3.125GS/s without aliasing issues? Am I missing something?
That is the time domain signal. The spectrum view is sampled separately. The signal is also periodic.
I need to learn this so I can become an astronaut 👩🚀
Hm, no back view of ACQ board? :)
There was not much on the back. Mostly passivess.
how MSO6 get 10bit ADC via down sampling? it is 8 bit ADC scope on 6-10GHz.
why are proper heatpipe coolers relatively rare in test equipment? It's so much more effective and compact than big aluminium coolers
Maybe I am missing something?
My understanding is that heatpipes and coolers are totally different, almost like a resistor is different from an inductor!
A heatpipe is designed to MOVE heat from one place to another while a cooler is designed to DISSIPATE heat into some other medium (air / liquid etc).
Therefore, if you have enough volume to dissipate the heat locally, you don't need (or even WANT) a heatpipe.
However, if you cannot dissipate the heat quickly enough with a local cooler (/ radiator), then you MOVE that heat elsewhere using a heatpipe to a place that the thermal energy CAN be dissipated.
@@trevorvanbremen4718 I'm saying that test equipment usually uses gigantic aluminium heatsinks that are extremely inefficient at cooling, instead of using a properly designed heatsink with heatpipes to transport the heat to the fins.
Servers and PCs moved away from the old style a long time ago, yet you still see it all the time in test equipment, and the devices thus often need way too loud fans to keep them cool.
Once an aluminium fin reaches a certain length, making it longer won't make the cooler better, since the thermal gradient along the fin means it's hot at one end, and barely above room temp at the other. A finstack with heatpipes doesn't have this problem, the heat can be spread across a much larger area in a smaller footprint.
I said heatpipe cooler, not just heatpipe. Don't just assume someone has no idea what the words mean that they're using, try to understand what they want to say.
@@tommihommi1 You're still missing the point. Heat pipes don't cool at all. They just move heat to something else that cools. In the case of servers, the heat pipes are conducted directly to a refrigeration system, outside the building. In test equipment, where some degree of portability is required, heat HAS to be conducted to the surrounding air, because you don't have the luxury of having a heat exchanger at every test bench.
@@BrightBlueJim Just read what I have written here again.
Heatsinks that work exclusively by conduction are inefficient. The longer you make a metal fin, the less work it can achieve, since there's a large heat gradient across it, and one end will be much colder than the other.
Using heatpipes, you use convection to distribute the heat across a larger area, and thus get a much more efficient heatsink.
Lool at the heatsinks in this video. They utilize heatpipes, and can be very small. It would be impossible to cool these chips using just chunks of aluminium with some fins, or the chunks would have to be absolutely massive. Like it was done in older test equipment.
People associate heavy with quality.
Overall, it is a very well designed instrument. The DC-DC modules look very interesting. As for those Teledyne relays, I would bet they could be used for very high speed signals without any issues, albeit they will be very pricey. The first inline relay seems to be there for grounding, or just to bypass a capacitor. It is hard to tell. As for the differential pairs going from the ADCs, they are reminiscent of the ones used in USB 3.0 or PCIe (e.g. one pair for each direction).
Anyway, good video, as always!
Can I steal your scope 🥺 ?
Engineering marvel.
With that price, not even gold plated BNC , probe connector
Not always necessary. Sometimes they may even be silver plated rather than gold plated.
8 GHz i will have to sell my house to buy one
I am pretty sure selling MY house would not suffice. Maybe that is good, because I have no desire to move under any bridge with that baby in my lap, but no electricity to turn it on...
Please, use a plastic pointer.
The mind boggles....
I'm sure it can run Crysis.
But only at 8GHz - Dual-Channel of course!
Who's pay?
"You can access the o-scope anywhere in the world with an internet connection"... 2 words...
Industrial Espionage
Imagine watching a competitor or rival nations labs right from the inside in real time!
Security on Isle Three, ... lock this up with encryptions, please!
Local IPs arent accessible from outside. You still need a VPN or port forwarding to access it from anywhere.
And a base price of $29,800
An amazing scope, but ouch!
That's for the 1 GHz model. You're looking at $80,300 for the 8 GHz model, with no other additional options selected.
@@CezaryAkakios The features are a bit more important than frequency to me, so I'd be ok with the 1GHz bandwidth.
That is, if I was a millionaire.
Definitely not (typical) hobby material, but this isn't like buying a robot where you have an option to have people do the work. With this you're basically buying a superpower. If you could bill more for work or get more types of work or fixed bid work done faster this could easily pay for itself in less than a year.
3rd
REPAIR VIDEOs !!!!!!!!!!!!!!!!!!!!!!!!!!! :]