EEVblog #864 - Siglent SDS2000X Series Oscilloscope Teardown

Inside the new Siglent SDS2000X Series 4 channel 300MHz oscilloscope.
They have a free bandwidth upgrade special on:

Datasheets:

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[kevtris]

props to siglent for not scratching off part numbers like rigol.

[RNdin]

I'd bet that fan is noisy just because it's directly bolted to that piece of metal, producing a sounding board effect for any noise the fan does make.
I've heard of ADDA, they actually make a pretty good fan. Maybe not top-of-the line per se, but they're a perfectly adequate choice for most applications. I've even pulled a few out of late 90's to early 2000's Sun or IBM servers that were being scrapped.
If they're good enough for IBM and Sun, they must be doing something right.

One last thing, the metal chassis looks like it's aluminum, but I could be mistaken. It would certainly explain the lack of rust, material thickness, and use of threaded inserts instead of just cutting threads in the base metal.

[ewanharrison]

Words can't describe how excited I am to see your new lab!

[smpstech]

ADDA is a well known fan company and is considered pretty good. Of course, every company can build something down to a price, but I would still trust it.

[AmericanLocomotive]

ADDA fans are actually fairly decent. They're not a Delta or Sanyo-Denki, but a lot better than a no-name.

[bucypher]

I think ADDAs are quite regular shelf fans. Nothing fancy, but good enough for most of the PSUs and other stuff.

[TheEPROM]

A video on using JTAG to gather information and potentially reverse engineer a device would be really cool, I'm into all that fun security stuff.

[russdill]

I like the layout engineer that put in the SN label and decided it needed a bunch of underscores

[jakp]

Yolo, that battery still looks like a pain to get to.

[mrlithium]

ADDA is actually a well known fan maker.

[ChipGuy]

15:50 When you look at the corner of the ADC it looks like the 2 last and first pins on each side are not even soldered onto the board. Weird.

[seanmcmunn]

Color scheme and knobs looks like an Easter special

[AureliusR]

Dave -- we WANT you to turn it on! I don't mind the teardowns (though they're all starting to blend together, as far as the scopes) but we want to see the UI, the performance, and some features of it!

[Pieh]

Only just started to watch, but i await to see the standard "Siglent rust" feature that is in EVERY other product they squeeze out of their diseased teet.

[ratdude]

Dave- a little PSU design note- a lelon primary cap isn't a major issue. Secondary caps, yeah, they're trouble. Primaries, not usually an issue; they're pretty low-stress.

[RaptorZX]

since it give you access to the 2pins fan header, you could change the fan easily, and if you have a Molex or 3pins fan, you can still use an adapter for it, and even use special adapters (or make your own) to slow down the fan if it's too high-speed.

[John_Ridley]

Dave, NOBODY in production would have a manually operated pop rivet gun. I used to hate on pop rivets until I saw a competition robot held together with them getting the crap beat out of it every match and no problems. I talked to the team, they have a pneumatic pop rivet gun and they love the thing.

[esnam]

Very interesting tear down. Thank you Dave.

[montinhoman]

Betting the ADC is a ADC08DL502. Only one in a 144 pin LQFP in digikey. Those corner pins really look like the NC pins on that part too...the ones in the right bottom corner in particular

[AstralJaeger]

how often I tried to measure a wafeform with the exteral trigger of the Rohde&Schwarz...