Hi Welcome to Teardown! Tuesday This is a follow-up to the previous video which was an unboxing and playing around with the new GW in stick GD S2000 a series VPO Oscilloscope. So let's tear it down, see what's inside including now hopefully layout logic analyzer modules if we can take those apart and definitely the option modules as well. for the function Gen and the logic analyzer, let's see what's inside this puppy. Just as a quick aside that I didn't mention in the previous video because I didn't know about it and you would think that because this has two function generator output B and C's on the front that this is a dual channel function generator.

Well, according to the manual, it's not. If you read it, it says if you plug in two of these, you can only use one at any one time. Crazy! Why have two B and C's on the front? And which implies a dual channel function generator. If you can't actually do it, it's insane.

Anyway, I don't have a second one to test that, but that's what it says in the manual. So maybe we'll start out with this function generator and see what's inside this. so I can only presume what they're doing. There is having a separate B and C output coming from a dedicated pin on this option module, so it doesn't matter whether which one you are which slot you plug this function GN module into, it'll ever route it through manually through to the channel one a B and C all the channel two B and C so they don't have to put like a relay inside to switch the thing.

But ah man. Unbelievable. Yeah, we've got four screws on the bottom here so we'll whip these out self tappers and what are we expecting here? Well, I'm maybe Is it all of the function generator circuitry? And literally, as I said, the output from one of the pins here goes straight to the B and C or whether or not there's some extra buffer circuitry inside the scope. I Don't know, we haven't opened the scope yet.

We won't know, but let's whip this open and there we go. Mostly ground, plain. It looks like we have a programming, so there's some sort of programmable device in here. Let's have a look.

Ah, actually one of the first things I noticed here was the fact that this what I thought was metal shield from the outside is not actually connected to anything at all. I Mean it's got these little raised bits which come up there and then actually do make contact with the board, but it's actually the solder mask part of the board. What? There's no exposed solder mask on the bottom side of that to actually make contact there. so I don't know nothing.

I Don't know what the deal is there. That's just uh uh. it's just floating and this backing plate here is actually a powder coated metal. It's not actually plastic, go figure.

Well, it's not an FPGA it's an out here at Mac's to see PLD in a little thin quad flat-pack there. JTAG programming interface of course, quite a few. It looks like a you know, parallel so the bus coming in to that. not much else, really.

Not much doing on the bottom side. In terms of the connections, there's a few around here, but mostly power seems to be grouped in the middle here, and clearly we have our output down here. so it's on a fixed pin, so that would be the so then yeah. I Think that it looks like there's probably a driver on here, and it does probably go through directly to the B and C output there.

And there's the oscillator for the CP or D. And um, yeah, there's not much else. So at least with the CP or D, it does have some functionality, but not full. It wouldn't have full arbitrary waveform capability or or anything like that really.

So we can see that on the power side of things here. though. it looks like a lot of the regulation is done internally to the scope and it's just powered through here looking sick coming in here ste coupled with that cap and through an inductor there and then it just buggers off through some for videos down there, over to the bottom side, over here, back to an internal layer. This is obviously a full layer board and then it pays off.

That looks like they've got a little low dropout reg there for something or other for some local regulation probably for the X2 PLD or something like that. but generally it looks like they're just powered directly from the suppliers within the scope. but that's not surprising at all. There's absolutely no surprises on this board at all.

Of course, it's going to be a DDS generator. So apart from the max2 CP or D which is just probably working in some sort of interface or glue logic on the board we have today surprise surprise and Analog Devices Eighty Ninety Eight, Thirty Four One of the Jellybeans are seventy-five megahertz DDS Generators I've used those myself. They're quite good. so direct digital synthesis up to seventy-five megahertz.

This thing only goes to like three or five megahertz. But then we have an old-school Ilium three, one one there. What else have we got? We've got a eighty Eight thousand which is a very high speed one gig current feedback op amp and then we have and what do we got here? and OPA 132 our precision fit Op amp about seven. another precision Op amp down in there.

Look at that budge wire. Ah man. Anyway, they had to do what they had to do. I guess they couldn't race pin.

This little board wouldn't cost that much really. it's not that ripping and the main motherboard for the scope or something like that or anyway. sorry another relay in here now first really quad Op amp tell I said before, just jelly beans stuff happening there and then our output buffer looks to be an 88 double O nine which is once again a one gig. Very high speed to give you a high gain bandwidth product, current feedback op amp use for pulse applications and that stuff like that.

and there's an output relay to switch it off and on. So yeah, pretty much exactly what I expected. Really? Ah, nothing fancy at all. It's bamming them.

but they've actually used um, Analog Devices parts in here quite expensively and they're not the cheapest thing around, so they haven't really just skimped on price anyway. But feature said, of course it's just a DDS generator, which means they can't do ARB waveform capability or anything like that. it's not built-in They certainly could come out with better functionality in the future, whether or not there's any like you know. Second, what: there's no second channel modulation capability because that would need a second DDS chip.

This one only has a single DDS chip, so it's not like they can generate a second signal and then modulate it. You would have to do that using you know, not a discrete method like this, but using a some sort of ARB capability. And just based on the tracking or lack thereof, there's really only an output from this I Don't see like any sort of analog input coming in for any sort of optional external modulation capability with like an extra connector on the back panel or something like that. Oh well, you know, because this is module base, there's nothing to actually stop them.

You know, working an external modulation, revising this thing, and working in an external modulation input on their, for example. so it can certainly be done. They just, you know, have to release a new module that has that capability onto the logic analyzer module. here.

the input module. Um, I don't see any screws on there. So whether or not that's a heat sealed or whether or not snap sealed I don't know I might try and prise it open, but apologies if I can't get that input pot open I Certainly don't want to destroy it I'd expect there to be a little something in this because it can certainly detect that it's plugged in, but that could be as simple as you know, shorting a pin on the connector in there could be as simple as that as far as module detection goes. So whether or not there's actually anything in there, we can find out because today, this one has screws.

Alright, this one just pops open. A little bit of a clip on the side. just a cable. and there's nothing on the flip side of that either.

Just got the individual pairs running. This is for obviously the 16 channel. That's the extra connector up there for the 16 channel, which isn't populated exactly the same pod, but they've only got the one connector wired in. But there you go.

It's just got some power wired through there, the thicker, the thicker traces, and then the individual pair running back. Interestingly, if you count the pairs one two, three, four, five, six, seven eight, you'll notice that there's an extra pair over here. There's actually nine pairs for each pod there, and they've got exactly the same on the back eight plus that ninth pair. So whether or not that's for an external clock or whatever, I Don't know because it doesn't have an external clock capability on the input here.

And the thing with that is no external clock means no state analysis capability. Because logic analyzers have two types of mode of a state analysis or timing analysis. And in this case, state analysis requires an external clock so that you're sampling. If your input signals can be in synchronization with the external clock from your circuit under test, this one doesn't have it.

Tobar We're into the main pod which connects to the head. There we go, it looks like, um, yeah, looks like we have some sort of a squared prom there. We'll take a look at that and there's some power. Definitely some power coming through there.

We'll have a look what's on the top and that is indeed a serial prom. So presumably that is the ID which then tells the firmware that this modules plugged in so you can't just make your own pod. you'd have to actually copy that firmware. And of course, there's no onboard regulation here.

just a couple of inductors, there bit of filtering powered from the main machine, the motherboard on my machine. and there's the input circuitry. It looks like, although you can see the traces on the bottom side there going all the way through to the connector, it just doesn't seem to make sense. with all that sort of stuff down there that looks like a lot of that looks like chip bypassing some of that.

anyway. So I think we're gonna find some circuitry underneath this puppy and that one there, that bunch of all that, but those are passives there. They indicate that there's active circuitry under there somewhere doing something. and likewise, this one down here.

So I think we're going to find some chippies under here here and here. Let's flip it over. Tada, look at that. There we go.

We've got some serious our logic analyzer stuff happening here. I'm really gonna have to get in there with the zoom and have a look at the chip numbers on these interesting looking LCC Or are they little quad? Looks like they're little quad flat packs they're gonna have together looking. They're obviously handling that. Two channels a pop and that's why we saw a differential pair coming out.

Possibly are they a differential? Our driver will have to have a look. There we are. There's an OPA one-77 There and I'm not sure what that one is. can't read it.

Let's get in there, but it looks like Oh D Diode. It is a diode that's a funny-looking diode package. Wow Look at that G13 number One One Nine obviously doesn't ring in or any any bells off the top of my head. I'm gonna have to go google that one, but I'm not sure if we'll get any luck there.

But anyway, look you can see the individual pixels on the silk screen there. Check it out. You can see that this is a dot printed silk screen. Pretty cheap and nasty one.

Jeez. but not not that it matters. Just thought I'd point it out. But anyway, before of those clearly handling two channels each.

that one there LVMH in eight, nine, one two two five I don't know. Obviously some sort of DC to DC converter locally. um I'm not sure why. geez, does it need? Does it need that much power right at the head to drive these logic analyzer input buffers here? I don't know I don't know about that g13 I Couldn't immediately find anything on Google There's a like a Renesis Rl78 G13 micro, but that's definitely not it.

This is only a 16 pin package. It's not going to be a microcontroller there. so I don't know if you got any info on that. Please leave it in the comments or on the Eevblog forum and there's our input network.

They're coming directly from the connector. small value series resistor. they're 90-odd k resistor. They're quite impressed by that.

Build qualities are excellent and design quality looks good. And you do actually get a decent logic analyzer input for your money anyway. for what you're 500 bucks for the logic analyzer option and of course the input logic threshold as well I don't know where that's set. Clearly, that's it.

It could be going into these devices. they could be, you know, a fully programmable input, programmable thresholds, and stuff like that, so that could actually be quite a little complex beast on the input there. And once again, I'm not gonna spend a lot of time trying to track down the info on that. I'll leave it up to the viewer, someone will post it.

now. let's do what everyone's come here to see. The main scope: Looks like we have some cell maybe self tappers down here I don't know and a couple up the top here. but nope, there we go.

Let me zoom out a bit a couple up the top here under the handle and that's all she wrote. So as I said in the previous video, I Expect this to be quite decent quality. GW In Sticker: Quite a reputable company thread. metal threaded inserts of course, so the other ones are obviously that I would have been disappointed if they were self tappers and drop it.

Always have leftover screws or not enough when you put it back together. Oh well. so anyway, the back cover will just lift off. they'll I don't see much screen.

Oh yeah yeah, there's yeah. it's probably a bit. looks like there's a big metal shield inside, so will we expect that in modern night scopes. EMI is a big big issue so they have to work.

not that on the head pretty well so it looks like this will just pop off. I can see how noisy fan in there. Oh there we go, too easy Tada. but it looks like oh yeah, there we go.

Separate power supply there on its own board, not shielded in its own right, which is a lot different to where some of the other rough scopes over modern scopes are taken apart. Usually this is A or in its own power supplies in its own shielding enclosure, but no there it is. Just hangout sauce in the breeze there, so that's not terribly exciting. If you don't like the noisy fan, you can get in there and replace that.

Not a problem. They've got a separate output board here which would take a look out for the USB and the serial and the other B and C's going for a cable tour neatly cable-tied Not a problem. We've got our slots coming out here. Our PCI slots and Wow looks pretty simple, but nothing wrong so far.

Really part bit disappointed though that there's not a shield on that Actually one thing that just became immediately obvious where I go I Really haven't seen this before. Where are the output voltage cables on this? Usually you see nice big, beefy, you know, individually wide output cables, big Molex connector, something like that. nice high current things like that. know all we've got is a bloody standard point one inch ribbon cable.

Are you kidding me? That's entire output supply from this thing going over to the main board. What? How much power does this thing take? You can't take much or even that'll They're really pushing the margins there with a little. well. they're probably using multiple pins of course, but you know there's generally rule of thumb with these is only an amp per pin or there abouts.

But yeah, I just G's a point one inch header. Give me a break. This is interesting. Check out this.

They're just got like like an afterthought. almost. Oh, let's just bring this winding out here. We don't have enough pins on our on our the bottom of the thing.

Let's just bring out an individual winding and put it in there. and yeah, okay, they've glued it down I'd say Cabot cheese. you know. um, almost like an afterthought.

Never glued that resistor in there. A little bit of attention to detail just to ensure that doesn't flap around in the breeze. They've got imput protection down there I See a moth and a thermistor down there? fuse? Of course it's not directly soldered in. Why they've got this just jumping over to there like that? I Don't know it may be it allows them to get a current clamp over that thing perhaps? I Don't know.

Weird. Anyway, it looks like we do have a common mode choke here filtering. so they're at least doing all the basic filtering stuff. There's our big-ass clunking mechanical switch.

They're very nice. I Like that it doesn't look like they're They're faking that and just doing standby power. You can see the optocouplers down in there. it's you know, it looks like a pretty basic, reasonably designed power supply.

Let's take a look at the brand of the caps. that folks is a Nippon Chemi-con symbol. I Didn't expect a Nippon chemi-con in here. Excellent, top world-class brand cap in there I See what it looks like all there.

All of them, even the output caps over here Nippon Chemi-con Brilliant. Every single one of them. I Haven't used another brand electro in there. Very nice.

I'm impressed. Thumbs up and there. The Kmg series for those playing along at home 105 degrees see, they've got that. It's had close to the pract almost touching the heatsink down in there.

That's not great for longevity Once again, another one right next to the heatsink. But you know these things, you are cramped for space, but you know that one over there. There's probably no excuse of putting like almost touching that Heatsink. really.

But anyway, I'm impressed with the quality of the caps, that's for sure. Usually you'll get a mix of brands of caps in this thing, but in a typical power supply they'll like out. you know, skip on the ones that aren't super critical to the design. They'll skip on a cheaper brand to save a few cents here and there to trim off the bomb costs.

But no, they've used Nippon chemi-con throughout and there's nothing worth looking at on this USB and Rs-232 connector board up here. But your notes notice the nice little RFI EMI fingers they're on the connectors. Nice. They've done that right now.

It's interesting to note when you look at the side profile of this thing, you'll see all the circuitry is within half the depth of this thing. The other half is taken up with the power supply in this horizontal configuration like this, and the fan, which is then you know it mounted out like that and this connector board on the back. If they really wanted to, you know, put some engineering effort into it. This, they could have actually made it not much thicker then that itself.

But then again, it almost becomes pointless because, well, how do you can make something that thin for sure? But then how do you keep it from you know, falling over and stuff like that you got to have proper, you know, tilt feet like that. They come. You know that come, out to give it some counter balance on there and that sort of stuff. So yeah, but interesting to note they could have done that.

and today I pop that whole metal shield off and we're in like Flynn look at that one main board of course. No surprises I sense an analog devices black thing DSP up here. we have seen those before in the RAI gold some heat sinks stuck on to ie I could almost move that but I won't take it off. Should I try and get those heat sinks off to have a look at the chip I don't know I probably shouldn't Jeez, but look looks like we can get through the metal shield here for our four channels.

this is that marked as the four channel board. Of course, the two channel board presumably the to channel scope wouldn't have complete two channels populated in here and probably that second device here. because as you saw in the second video, the sample rate does have when you turn on channel 1 and channel 2, for example, the sample rate halves. So obviously they've got the one chip controlling two channels the second device over here.

So that's why if you turn on channel 1 and channel 3, the sample rate doesn't have because you've got a separate chip handling each one. but presumably they wouldn't be silly enough to, uh, populate all those if you're only buying the T channel model because it's not software upgradeable or license upgradeable or anything like that. you physically paying more for the extra two-channel front end. probably the extra chip there, and maybe something else, but that's the main cost.

But there you go. Um, it's pretty Spartan actually I Like it. Let's have a look at the main devices. Alright, three devices here.

Analog devices Blackfin DSP a DSP Bf5 Three One We've seen these empty that's used pretty frequently in these Um scopes, actually. So yeah, it seems to be the processor of choice for driving well the GUI interface of these our scopes. of course it doesn't handle you know, the input, sampling and processing and all that sort of stuff. It's just pretty much the you know, the operating system, the on-screen graphics and user interface and things like that.

ISP 1761 USB Host controller and also an Out hero max to CP or D same as what we saw in the module there. and then no surprised to find that that CP or D is actually hooked up to the modules there. So obviously some sort of glue logic that handles the module module function capability something like that and coupled around what's clearly an FPGA I'm here. don't know if I remove that heatsink yet.

could be really messy I don't know. But anyway, we've got ourselves a GS Eighty eight, Oh Three Six, CGT a nine me--but synchronous SRAM in a 256 K times 36 bit configuration So effectively a total. There are only two megabytes, but that's what this thing's got. two megabytes, the sample memory.

so clearly that's to make a sample memory with an extra bit. And of course coupled on to our FPGA. These two suckers under here are obviously our analog to digital converters and dead giveaway because they're right near the vertical front ends. the vertical front ends straight out of the prog Bull Gain amp.

They're straight up into the dual analog to digital converters. As I said, if you want the 2 channel module, you probably only get the one ADC incuriously. Next that there is a metal can, check that out and that one's actually soldered directly onto the board. What a bastard.

I'm definitely not going to work d Solder that can to see what's under there. but I don't Is that like a ADC clock or something? Perhaps I Don't know. Let's have a look at that puppy in there. Looks a bit interesting and no surprises to find an ultra-fast comparator Analog devices ADC MP Five Six seven obviously used for a part of the triggering circuitry and today I pop the heatsink on it and here it is.

they haven't scrubbed the numbers off brew it. The ADC is a National Semiconductor now. TI a DC 8, D 500 which is a 500 Meg's sample per second 8-bit dual analog to digital converter. So basically I'm one of these converters is only capable of either 500 Meg's samples per second on dual channel or one channel at one gig sample per second if you're interleave them.

Now, of course, this is a 2 gig sample per second scope. So maybe the 2 channel version actually does populate both analog to digital converters. And that's how they get using four of those converters in two chips. That's how they get the 2 gig sample per second either that? Well, they're overclocking and I pop the skirt on the main chip there.

And of course yes, I was right. It is an FPGA off-the-shelf Altera cyclone for the EP 4c E30, F2, 9, blah blah blah. Go look it up if you want to know the exact gate count and feature set. Now here's the interesting thing: Oh Possibly not so interesting thing depending on how you look at it compared to the array goal and the Agilent tear downs that was seen in the past.

for example, modern scopes, this one. Yeah, we've got our ABCs here. We've got our one FPGA here. Pretty good FPGA in it, but it's only one.

so presumably this is only doing the the sampling, all that sort of stuff and the trigger and everything else. Plus probably you know the intensity grade in there, color mapping, and all that sort of jazz as well. But look where the LCD is, can it looks like it's right next to coupled to the analog devices? Blackfin DSP Now if I can't see where the traces on they go, they could actually go down here to the FPGA in that case. Ok, they're mapping the data directly from the FPGA onto the screen and that's how they're able to get 80,000 waveform updates per second.

but if they're not, then they're driving it from the Blackfin DSP and that's going to be a big bottleneck and that's probably why the intensity gradient isn't that great. But anyway, I'm not going to make a call until I Flip it over and see where those pairs are going so they're even. They could go over to here I see a couple of tracers? see a bunch of tracers in there that could jump over, but more likely I think it's due to the placement. but then again, I don't know.

Let's flip it over. But anyway, that's different to the RAI goal one, which of course has a dedicated display FPGA Better horsepower and that's how it can get like it's a multi you know, 256 level intensity, greater display or whatever it is. whereas this one, who knows they might be doing it in and taxing that poor old Blackfin processor to get the mainboard out. Unfortunately, we do have to lift out the entire or take off the front panel with the rubber keymap Matins and everything else, so I'll put those back into place soon.

Where'd they come from there? There we go. Tada. Not a problem. There we go.

that's our front of our board. There's a top key mapping. Nothing exciting on the top here. I Probably won't even bother like unscrewing all of the the top board here in the LCD.

Not very exciting I Just want to take a look at the underside of that board. There we go. Got some more memory on the bottom? Aha. Yep.

duplicated memory on the bottom there. So we've actually got double the memory mount of memory that I said before. It looks like exactly the same devices that we had on the top. So yep, doubled our amount of memory.

We got to our program flush down here and that. but that's all it it. and that's all she wrote. And there's those fears for the LCD There that's the LCD Cable goes out to a separate board in there.

Not much doing there at all. It's just got a little bit of a err instead of like a backlight inverter or something on there. I Don't know, but yeah, nothing interesting. but I can't see where those traces go whether or not they come down here to the main.

FPGA it doesn't look like they do I think they've got to be coupled into that DSP So my money would be on the black fin DSP handling all of the display processing and that's a bottleneck compared to the Agilent one which does it in the magazine for ASIC and compared to the Reichel 2000 which does it in a dedicated FPGA but you know what if that's actually the case then getting you know the 80,000 waveform updates per second via that black fin DSP is actually quite impressive. and on the back backside of the input amplifiers here we've got a reasonable amount of heat sink well you know a bottom ground plane he think you can see all the vias via stitching there guy from the back of the device, a thermal pad on the back of the device there that'd be like the output amp which is driving the ADC which are around about here somewhere and that because that's the top part that would be the final output differential driver to drive the ADC differentially not much on the bottom of the front end here the front end is very unexcited. They've got some solar mass removed in various spots here where they you know because this is like a 300 megahertz bandwidth front end then yeah they've just removed some ground plane on the top there just to get the performance they need. but apart from that nothing else interesting on here apart from all the decoupling on that FPGA So there you go folks if you want to know what sort of decoupling is required on the bottom of something like that Spartan 6 FPGA in there pretty big beasts then yeah, look at all that a little bastard Oh 402 parts in there.

but yeah, you have to do that to fit them in. but that is the sort of you know decoupling you require. And of course this would be like a six or eight layer board enable to. In order to I fan out all of the signals, you can see all the Vias in there.

There's lots of decoupling, you know, solid decoupling in the middle in there, but some of these Vias have to get all the way out past all these other ones because you can only run one or maybe two if you're lucky our tracers between each pad. So you've got to have all those different layers to round out all signals. And of course, the soldering is first-class on this. Can't find any problems at all.

No leftover residue or anything like that both that top and bottom side of the board. And for those curious to see how they handle big thermal mass items like the front panel B and C they're those solder joints yet look cold and frosty, but that's little lead-free stuff for you. This absolutely nothing wrong with that at all. And speaking of the front end, I Am sure we have a lot of people very interested in the design of this 300 megahertz front end because yes, it'll be the same design from the 70 megahertz model upwards.

And if you want to check out the high-res photos of this board, hop on over to my Flickr account. The link is always in my description below. That's where I Post usually post high-res photos of my teardown. So I'm sure there'll be no shortage of people sort of reverse engineering this front end as we don't have to reverse engineer it.

You know it's pretty easy because they haven't rubbed off any numbers at all here, but there we go. We've just got some input coupling there on the import. Got a relay hooked to relays. Looks like we got a solid-state relay.

We got a trimmer cap, but another trimmer cap further up. We've got a second relay there and a few passives and there's a few transistors in there as well. Discreet sand. All that leads up to today.

that would be our outputs up programmable gain amp and a DC driver. that's the one that's actually heat sunk so that'll have a thermal pad on the bottom of that which then goes through to the exposed copper on the other side to try and keep the heat down on that. I'll see if I can get the part number I See, it's a National Semiconductor and yet National Semiconductor VM 21 A B It shows that you really have to get the angle on this to really read these suckers. It's just gotta get the right contrast.

There it is. Let me go look that up and that's actually the LM H 65 1/8 and no surprises whatsoever. It is the recommended device for that particular National Semiconductor Analog to digital converter designed or might you know very well listed one of the applications for an oscilloscope front end go figure and that's actually a 900 megahertz programmable gain amp. And yes, it does have a via SPI the gains controllable via SPI And yes, it does have internal bandwidth limit ease on the output of I think 60, 100, 200, and then 350 megahertz.

so they're probably using that as the bandwidth limit up. Although I wouldn't rule out that they've got something else down in there. They could switch with a digital line or something like that to do the filtering. So yeah, I don't know.

Someone will no doubt our reversing. you know I don't see a ver actor in there or anything like that. There certainly could be I don't know I'm not going to decode it I'll leave that up to what the aficionados out there to tell us exactly how their software bandwidth limiting this thing and but yeah, there's definitely the capability built into that device directly on the output. So if they are actually using this chip as the bandwidth limit or for the different models, then yes, in theory you could get in there.

it's happening to the SPI line and then you know it changed the command to increase the output bandwidth of that a DC driver amp. But who knows, they may. Actually, because this thing is not software upgradeable, they may actually choose different parts in there, for example. so there could be different resistor or capacitor values or something like that to actually ban with limit that somewhere else, but then that wouldn't leave their options open for the future if they wanted to then offer a bandwidth upgradeable model.

So yeah. anyway, in theory you could actually crack into the SPI bus on that and it changed the gain to anything you like. but of course, then you wouldn't have things like the time based setting and other stuff in the software. So yeah, I don't know.

I'll leave that one. definitely up to the aficionados. Now Interestingly, if you look at the membrane key membrane on the front panel, there's three more buttons down in here and it's like hi, Is there you know? some upgrade or some potential future upgrade? Well let's lift that up and have a look. It looks like it's just cheating.

Duplicator look, math riff Bus: For those curious to see what the rotary encoders are, Well, they're two, one, two, four, a one. I Have no idea. There's no brand marked on there at all. So of course these things I get wear and tear.

They are something that could potentially almost certainly will eventually wear out in that some people's machines depends on how often you use them. So if anyone has any more details on that post-it and for those curious to see the trigger circuitry in here, well I'll post the high-res photos. I Won't go into details here, but if anyone wants to, were any of your trigger aficionados there wanna know what? Check it out by all means. dude, there's the same ad Cmp Five Six Seven we saw further up on the board and that's that ultra-fast comparator.

So there you have it, that's a teardown of the new Goodwill in Stick GD S2000 a series oscilloscope. and but thanks to what? GW In Stick for sending that in. Most interesting build quality yet first class. As you'd expect like Oh from a company like GW In Stick, they're not one of the one.

Holy cheapies that's for sure. So build solder quality design quality very well done I Like it. No problems whatsoever, just a bit. maybe just a bit underpowered say compared to the Rygel 2000 series for example or the Agilent Mm series as well with their mega zoom for a six.

So yeah, I'll do the single if FPGA is a bit surprised by that I was expecting to see a second one, but I guess the I still don't know whether or not the display is directly driven from the Emerald devices black thin or the FPGA I'll have to figure that out or somebody can come through with more info then please - exactly how they're doing that. But anyway, that was an interesting teardown as it always is with these test equipment. I Really like them. And as I said before, if you want to see the high-res photos of this jumping over to my Flickr account, the link will be down below and though I'm sure it'd be no shortage of people discussing this on the Eevblog forum.

so feel like teardown Tuesday Please give it a big thumbs up I'm working late tonight. 7:30 Well that's late for a family man, you know. catch you next time you you.