Siglent SDS 1202X-E vs Hantek DSO2D15 - Serial Decode, Bandwidth, Rise Time, USB Wave Capture
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- Опубликовано: 21 сен 2024
- I'm hoping to save others from feeling the need to do what I did... buy both scopes to see which is the better value for money. There are a number of youtube videos out there on both scopes, but none that I found hit this handful of topics in this level of detail.
Cliff Notes:
Scope Comparison Video
Bandwidth
Rise Time
Memory Depth
USB Waveform Captures
Decode
Hantek Automatically limits Memory Depth in Serial Decode mode
Siglent still decodes when zoomed out to 1s or more
Siglent Decodes in Windowed mode
Siglent has better Decode Format / config settings
Problems / Troubleshooting
DS5072 USB doesn't work
SDO2D15 USB doesn’t work
Siglent UART Decode didn’t work
Firmware update resolved this. Most recent firmware bug fix says it fixed this is the revision notes but the problem remains. 
Наука
UPDATE:
RESPONSE FROM SIGLENT TO MY RUclips COMMENT REPORTING THE BUG TO THEM
"Thanks for your feedback. We've already told the relevant technical team to deal with the bugs about this version of firmware, and you can use the firmware version 1.3.26 for the time being. If you have any other technical questions, please feel free to send us at support@siglentna.com."
Siglent EU never published firmware version 1.3.27 so I didn't know it existed. In fact I thought they'd given up updating this scopes firmware. I've been using firmware version 1.3.26 ever since it was published and have never had any problems with UART serial decode. As a quick test I used the 1KHz CAL signal as a data source with custom baud rate set to 2000 bits/sec, 8 bits, no parity, 1 stop on firmware version 1.3.26 and the scope correctly decoded 55H with the character windows correctly butted up next to each other. I tried the same setup with version 1.3.27 firmware I got from Siglant NA and the character windows are blank with gaps between them, which is obviously wrong.
@@chrisg6597 Just got my new SDS1202X-E scope, which arrived with 1.3.27 installed. Sure enough, UART decode fails if decode/trigger are SET for stop bits > 1, and also fails unless the source uses 2 stop bits. BUG. Will now try 1.3.26, as the only other documented changes in 1.3.27 are for PC connections, which I don't need/use.
EDIT: Yup, 1.3.26 seems to work with a single stop bit. Keeping that version.
Awww, just updated to 1.3.27, I guess I'll have to revert back to .26! The question is if they will bring out a new update, or not.
@@marklord3148Hi. How can I revert to the older 1.3.26 version?
Thanks for the review and explanation. Very useful!
Very helpful indeed, thanks so much for taking the time to share this.
Siglent SDS 1202X-E is awesome finding between "affordable" scopes. I have Hantek DSO2D15 for a while, it has kinda everything, however many of features are only for words. Trigger glitches, math functions glitch, in slow resolution (50 ms and slower) graph often freeze with impulse packets clobbering into single color ribbon without a chance to distinguish something, overall speed is sloweish by general. In our new office we have Siglent SDS 1202X-E - tried it, realized that DSO2D15 is not for work. Seen this video and bought SDS 1202X-E for myself. Thanks about notice about firmware upgrade :) By the way which probe you're using?
Very good comparison and video!
i had the same hantek as you for my first one. i hated it so i donated it to a makerspace. then i got a decent 2gsa siglent, loved it but sold it and got the rigol mso5354 or whatever. i updated the firmware. i regret not getting a micsig so i can use it on cars as well. i got the rigol for free when a hurricane tore the crap out of my house so i got the logic analyzer and diff probes. i have a siglent linear psu and i plan on getting the sa and arb they make then my bench is complete. i wanted 4 channels but i've used 3 of them once haha. i could never get a clean waveform on my hantek. it was 500 dollars in canada at the time, it costs half that now. i'd like to get a curve tracer but i dont trust the kit or the asa-210 because the output bncs arced when i turned it on. glad i never had it plugged into my scope. my rigol is super fast but has more features than ill ever use. i wish i'd gotten an older tek mdo off ebay as it was before micsic came out and my old tek scope is solid as a rock. i got it on a trade. it has no features at all. it has better documentation than any piece of gear i've ever owned though. there's a novel in the box.
Sweet lab, great video. Keep it up!
You really want to get a dedicated logic analyser.
The dreamsourcelabs have internal buffering and can store a huge amount of data.
Mine captures spi at 5mhz and decodes it faultlessly. Decoding 110k serial is a nothing.
Or use Salea 8 channel clone for 10 bucks which is a lot better than your any of your scopes. By a long way.
Both these use the sigrok or derivatives. They can decode 100s of protocols.
(I have the new rigol scope but I would not bother using it as a logic analyser)
Good idea building a fast pulse generator to test the bandwidth. I was yelling when you were using a sine wave to test the bandwidth. ha. I got one of the dedicated generators. My scope is 200MHz and measures 220 by rise time.
I agree with you on the logic analyzer. Ive had the bus pirate logic sniffer on my home lab bench for 7 years now but have yet to it. I figured a scope with bus decode is nice because you can watch the communication for any kind of glitches or weak signal strength (abnormally low logic level or runt pulses). I see them as two different tools for two different purposes.
As far as the pulse gen. I'm still not happy with my edge speed so I'm building a transistor avalanche pulse gen and I have parts on order for an LT6905 because I read it has really fast edges. I have no current need for even 200 bandwidth but it's a fun little project just to see what I can get. Of course all theis playing with scopes has me looking at the Rigols that are hackable to 500Hz. Again, way faster than I need an can justify the money for. I think I'm finally settling on the SDS1104X-E. If I return another scope Amazon might drop me as a customer! 🤣
Thanks again for the feedback!
@@mcorrive12 I have an old bus pirate too. Didn't use it much as the software stack is so messy.
@@mcorrive12 I also have a bus pirate. Most every time I went to use it, what I wanted to use it for didn't work, found it was a bug on the tracker, then tried to compile the firmware, only to find it either didn't compile or didn't fit on the device. Maybe I should send you mine to keep yours company on the shelf and live happily ever after :)
Of course a man can't be happy with a 5nS pulse time! Instead of building one, I got this one from Ali: "Fast Edge Pulse Generator 350 Picosecond Rising Edge" for $30 USD. It's got a BNC on the board that goes right to the instrument, so no cables or probes. I needed this about as much you probably do. :) May I suggest you never look into getting a GPSDO, it's straight to the time nut asylum from there.
PS. My logic analyser picks up glitches at the level they would be a logic level event way better than my Rigol DHO.
@@originalmianos I use a 34-channel LogicPort USB analyser. 500 mega-samples/sec on 34-channels simultaneously, so it easily does logic to 100Mhz and higher. But having it in-scope for simple stuff saves a lot of fuss!
So you said your frequency generator goes to 75MHz and you tested the scopes bandwidth to 150MHz and 200Mhz. How did you do that?
Nice video -- thanks! Where did you get your shelves? They are the perfect size that I'm looking for.
My shelves are 2 sets of these stacked together from Amazon.
Honiter Wood Desktop Shelf, Office Desktop Storage Rack Wood Display Shelf, 2 Tier Adjustable Stackable Office Supplies Desk Organizer, Freestanding Small Bookshelf Desktop Organizer, Grey
a.co/d/aWJPLul
Between the two sets, they're not exactly inexpensive, but I wanted an aesthetic the wife would sign off on. 👍
Thank you, @@mcorrive12 !
Are you selling your older Hantek o-scope? If so, how much? Please let me know. Thanks
I can sell you mine DSO2D15 for 150€. Has heat sinks on signal chips and is upgraded to latest available firmware (20240326).
I bought a Siglent 100mhz 1gbs for my first scope. Glad i did. I paid 300$ for it back then few years back.
I considered a 2nd scope going Hantek but the price difference isnt that much. +100$ for a higher quality one that works a little better..
Had better firmware.. mine has never hiccuped except when i accidently injected a few kv into it. 😅 screen giggled a bit but didnt hurt anything luckily. (That i know of)
Appreciate this video i was curious between these two budget style scopes
I'm pretty impressed to hear that it took a few kv input and shrugged it off! Clearly a robust design on a budget
@@mcorrive12 yes it was such high voltage ...the probe was arcing between the ground ring on probe connection and its +.lol woops
@@heliarc5186 🤣
About the usb drive not working - with what file system is the usb drive? The oscilloscope is running linux, so you need to use file system, which linux support, like exFAT. I had the same oscilloscope and the usb is working just fine - screenshots, firmware updates.
I don't recall the specifics, but when I googled the problem at the time, I tried using a couple different USB formats and still had no luck.
@@mcorrive12 IIRC, USB problem was common and Hantek issued a firmware fix.
i was thanking about buying siglent but i end up getting Rigol DS1102E Digital Oscilloscope it do what i need it to do. I have a amp for a mixer gone bad what do i need to be able to test this with out blowing out the input of my scope.
I'd always recommend differential probes when testing anything mains voltage and above.
I have the Micsig DP10013. You can get it on Amazon.
@@mcorrive12 thank you I needed to measure the transistors on the amp the collector and emitter
@@mcorrive12 I just ordered one thank you for the information, i don't want my scope damaged.
@@mattArnold01 Of course, be careful when probing high voltages. Best practice is to power off, position the probes, then power on. Never move probes around while energized unless absolutely necessary. 👍
You can enable 8Mpts memory on Hantek. This should allow decoding from RAM.
I believe I address this at 12:25. I put the scope in 8Mpts mode, but doing that disables decoding. As soon as you re-enable decoding, the scope limits itself back to 4kpts.
@@mcorrive12oops. sorry. You are right.
I assume you have the USB FORMATTED to what the scope REQUIRES?
Correct