Siglent SDS2000X Plus

[2N3055]

SSA 200Hz Span & 1Hz BW and synthesizer jitter (also wobbling)

??

See pictures....

Again, what are we looking at
Please explain.

- What is the source of the signal and what are the characteristics of it?

- What is it that you try to prove and show? Your signal source is unstable? Scope display and or FFT is unstable? Spectrum analyser display is unstable??

- How does data you're showing prove and explain your  point?

Best,

[IAmBack]

And, if it is possible, please show us plots of the same signal source obtained with "proper" instrument.

[tautech]

SSA 200Hz Span & 1Hz BW and synthesizer jitter (also wobbling)

??

See pictures....

Please if you have issues with a SSA then please post them in the appropriate thread along with model #, FW version, test setup and anything else that can't be determined from screenshots.
https://www.eevblog.com/forum/testgear/siglent-ssa3000x-spectrum-analyzers/


WRT previous comments about bug tracking and fixes, please consult the SDS2000X Plus Firmware Revision Record and Upgrade Instructions PDF that is part of the FW package. For your convenience the current version is attached below.

[hpw]

>> SSA 200Hz Span & 1Hz BW and synthesizer jitter (also wobbling)

The plots where also given on a SSA thread, currently do not find any more... even with search.
May split the board into engineering & bug tracking and hacking 

This plots shows the analysis of its own 10MHz reference source. Same as using a 10MHz 120dBc@1Hz OXCO. This means the
limitation is the used synthesizer.... just as similar is used on SDS2K so the plots went here in.

I used my Tek Scope 2464B (400MHz) and shows up about a 1ns rising/falling edge with some more overshoots as seen on a Keysight MSO3104. All signal used by a SMA & 50E connections. Even the active FET probe as 1G /3pf shows more overshoots using shortest connections. Output is OXCO & TI buffer driver, as spec's about 700ps Ts/Fs.

The question rises about the required samples at the slopes.... IMHO about 5..10 samples to get any accurate about slope and overshoots. While new on DSO, but get the feeling about a required 20Gs DSO for 1h measurement ... XX-K$ to spend or better to rent.

So using a SDS2K model with limited synthesizer precision's and channel behaviors (I guess as from the SSA model) a Sampling Scope or xxGs DSO with nice jitter measurements  Just to understand an 1ps variation is at one Terra Hz 

[IAmBack]

You mean Tektronix 2465b analog oscilloscope, not 2464b, right?

[bdunham7]

You mean Tektronix 2465b analog oscilloscope, not 2464b, right?

No, the 2464B was a special model made for Australia.  It has an upside-down CRT.

[hpw]

Yeah, an 2465B ...

[IAmBack]

Your comparison of DSO to Your analog oscilloscope is something more complicated than simple screen plot comparison.
Especjally if we look at plot recorded with limited sampling rate?

When dot mode display is chosen, then points corresponds to data recorded bu s/h - adc combo - hence no artifacts. Overlayed patterns of points forms actual plot, that corresponds to input data.
If vector mode is chosen, then sinc reconstruction cames to play - hence possiblility different intermodulations with higher spectral components. To avoid this, scope bandwith has to be limited. So, if adc speed is reduced, then input bandwith has to follow this reduction either too keep Nyquist theorem.

To make a fair comparison you should record with Your tek some several hundreds of signal periods, then enlarge the plot to see a single period look.

[tautech]

Some inkling into what hpw is going on about can be found in Topics in his profile.
This thread that it appears he has forgotten was of his own making:
https://www.eevblog.com/forum/testgear/siglent-ssa3021x-plus/

[Markus2801A]

Back to SDS2000X Plus 

Regarding Firmware update, any news on it, possible release date?
Im so eager to get it :-)

[Martin72]

The longer it last, the better it gets....
So let´s be patient, last update was in november 2020, now a few days or weeks more or less....

[zeeloli6]

New Siglent option bundle promotion:
For all sales areas except NA unfortunately. 
Expires Sept 30 2021

With new purchases of SDS2000X Plus DSO's:
MSO SPL2016 HW with license and 50 MHz AWG/FG license for just $ 219 !

https://int.siglent.com/info/detail-49.html

:grumble grumble:

Don't get me wrong.... I'm very happy to see Europe and APAC AAAS get discounts.  Far too often companies tend to have two classes of customers: 1) America 2) the rest of the world.

But sheesh.  With a discount that steep I feel like I'd still save money buying from a European reseller and paying for shipping to the USA.  The probe kit alone is $369 USD retail.

[tautech]

New Siglent option bundle promotion:
For all sales areas except NA unfortunately. 
Expires Sept 30 2021

With new purchases of SDS2000X Plus DSO's:
MSO SPL2016 HW with license and 50 MHz AWG/FG license for just $ 219 !

https://int.siglent.com/info/detail-49.html

:grumble grumble:

Don't get me wrong.... I'm very happy to see Europe and APAC AAAS get discounts.  Far too often companies tend to have two classes of customers: 1) America 2) the rest of the world.

But sheesh.  With a discount that steep I feel like I'd still save money buying from a European reseller and paying for shipping to the USA.  The probe kit alone is $369 USD retail.

LOL yes we are very fortunate in some markets where we can still offer the previous free options (except MSO) too !

[blurpy]

LOL yes we are very fortunate in some markets where we can still offer the previous free options (except MSO) too !

Which markets have access to those free options?

[tautech]

LOL yes we are very fortunate in some markets where we can still offer the previous free options (except MSO) too !

Which markets have access to those free options?

Sorry IDK however if you shop around it is possible you may find someone still holding stock with the factory free options installed.
Some dealers may have stocked up like we did when that promotion was active.
ATM only the MSO/FG promotion seems active in the EU:
https://www.siglenteu.com/news-article/summer-time-special-bundle-save-up-to-e496-with-a-new-sds2000x-plus-oscilloscope-and-option-bundle/

[blurpy]

if you shop around it is possible you may find someone still holding stock with the factory free options installed.
Some dealers may have stocked up like we did when that promotion was active.

Thanks for the tip! My local dealer had 1 left 

So combined with the current promotion it's looking pretty nice, straight out of the box:



(that inline image probably doesn't work. update: trick from tautech works)

One question - is the fan supposed to tick? I've read some complaints about noise, but mine ticks very fast, like a clock on speed.

[Johnny B Good]

@blurpy

 That ticking noise is probably a wire that's just catching the fan blades or maybe due to damage to the fan. It might be worth trying Dave's trick of peeling the warranty void sticker without damaging it to save voiding the warranty by taking it apart to check the fan to save the hassle of a return which might result in losing all those tasty options you got with this one. The ticking fan could be the reason it was still available (possibly a customer return awaiting closer inspection for a local repair).

 One thing you could try is to operate it in various orientations to see whether it makes any difference to this ticking noise to get a better idea of the nature of the problem before trying a self repair. However, if you bought it from an official Siglent agent, it's probably best to report it and have them sort it out. I doubt you'll lose out on the free options, especially if you make a point about keeping those options as per the original terms of your purchase.

[tautech]

if you shop around it is possible you may find someone still holding stock with the factory free options installed.
Some dealers may have stocked up like we did when that promotion was active.

Thanks for the tip! My local dealer had 1 left 

So combined with the current promotion it's looking pretty nice, straight out of the box:

Nice, glad you found one. 

(that inline image probably doesn't work, like always)

Hasn't for sometime so just add the thumbnail and do an Edit with [ img ] pic address [ /img ] with the pic address being the URL of your thumbnail.

One question - is the fan supposed to tick? I've read some complaints about noise, but mine ticks very fast, like a clock on speed.

Probably some remaining plastic on part of the fan from injection molding.
Tell your supplier about it and if it drives you nuts try and record the sound for Siglent to supply a new fan.

[Martin72]

The diameter of the fan is 80mm standard, right ?

[tautech]

The diameter of the fan is 80mm standard, right ?

Yep

[H.O]

Took delivery of a SDS2k+ a couple of days ago, it too got that ticking noise coming from the fan. It's not something I'm going to pay return shipping for just to get a another unit with the same issue. I'll live with it for a while then I'll replace the fan, like I did on my DS4k.

[IAmBack]

Sort of ticking noise here too. It has something to do with brushless controller, i think.

[IAmBack]

The diameter of the fan is 80mm standard, right ?

Yep

So, it's perimeter is pi times diameter. As we know, pi is equal to three with something. And this is this something that  clicks there.

[blurpy]

That ticking noise is probably a wire that's just catching the fan blades or maybe due to damage to the fan.

One thing you could try is to operate it in various orientations to see whether it makes any difference to this ticking noise to get a better idea of the nature of the problem before trying a self repair.

The first thing I did after turning it on and noticing the ticking was turning it in all directions. It doesn't seem to make any difference. Hard to see if anything is catching the fan blades though.

(that inline image probably doesn't work, like always)

Hasn't for sometime so just add the thumbnail and do an Edit with [ img ] pic address [ /img ] with the pic address being the URL of your thumbnail.

Hey, excellent, that worked! Thanks 

Probably some remaining plastic on part of the fan from injection molding.
Tell your supplier about it and if it drives you nuts try and record the sound for Siglent to supply a new fan.

Ok, I've recorded the sound now, and will send it to them so they can evaluate.
I've shared it here if anyone is interested:
https://drive.google.com/file/d/1ip6ywEboQeQEmwiGfL8fPzKtnTvqpgDQ/view?usp=sharing

Took delivery of a SDS2k+ a couple of days ago, it too got that ticking noise coming from the fan. It's not something I'm going to pay return shipping for just to get a another unit with the same issue. I'll live with it for a while then I'll replace the fan, like I did on my DS4k.

That's somewhat comforting to hear! I fear as well that sending it back will just get me another unit or fan with the same ticking. Maybe the improvement tautech mentioned some time ago where they lowered the fan noise was due to lowering the voltage to the fan, and as a result it makes that ticking sound?

[blurpy]

The diameter of the fan is 80mm standard, right ?

Yep

Isn't it 92mm?
This is the one I have (ADDA AD0912DS-A70GL):
https://no.mouser.com/ProductDetail/ADDA/AD0912DS-A70GL?qs=JlPQwKGeTi8s51BBKT5mcw%3D%3D