Siglent SDS3000X HD and upgraded SDS1000X HD

[Lexy]

My unit, a SDS3034X HD, finally has arrived! Here next to my loaner unit.

Not much time to play with it, but first impressions is super good. It UI is definitely more responsive than the SDS2000X HD unit, which is is for me a big plus.

Hope to find some time next weeks to play with it

[Martin72]

I would expect the SDS3000X HD to behave exactly like the SDS800X HD - the screenshots above just don't show the true picture.

The data sheet confirms this.
I don't think it's necessary to ask why this is handled differently from model to model.
Nevertheless, I would be interested in the advantages and disadvantages of both “variants”.
By the way, a user of a 12-bit Lecroy at work writes here, which has a maximum total of 50Mpts, just to put that into perspective.

@Lexy:
Yes, that was the first thing I noticed between 2000X HD and 3000X HD.

[egonotto]

...  - the screenshots above just don't show the true picture. The scope is still in Stop mode, hence any altered configuration cannot become effective. For each different setting (1, 2, 3, 4 channels active) you have to ensure that the scope is in Run mode, i.e. close the history first. Then you should be able to see the true record lengths. Furthermore, to be absolutely sure when checking the maximum possible number of frames, click on the "Frame No." field in the History and then on "Max" in the numeric input pad.

Hello,

that's what I did. But I didn't get more than 159 segments of 1 Mpts with only one active channel C1. And that's not even half of the maximum 400 Mpts available for this channel (only C1 active). It seems to me that Siglent is unfortunately not fully utilizing the possibilities of the hardware here.

Best regards
egonotto

[Performa01]

Up to now, my analysis was incomplete - we need to take the sample rate into consideration as well:

SDS800:          2 x ADC, 1 x 100 Mpts, 1 x 2 GSa/s
SDS2000X HD: 2 x ADC, 2 x 200 Mpts, 2 x 2 GSa/s
SDS3000X HD: 2 x ADC, 1 x 400 Mpts, 2 x 4 GSa/s
SDS6000:        4 x ADC, 1 x 500 Mpts, 4 x 5 GSa/s

So there might actally be differences between SDS800, 3000 and 6000.

I honestly don't know what drives the decision to organize a single shared memory vs. corresponding chunks of memory per ADC. Single shared memory quite obviously has the advantage of longer record lengths in single channel operation.

It might be that the architecture of the SDS3000X HD would be the same as the SDS2000X HD, hence only 200 Mpts max. per ADC, and we only got a special solution that allows a single record utilizing the full memory. If, on the other hand, the history can't get close to even 200 Mpts, I don't have any explanation for that.

[Martin72]

Here are the memory specs for the 6000A and 2000X HD.
At first glance, it looks as if the 3000X HD and 6000A have the same layout.

[Momchilo]

Here you can see the mainboard of a SDS 3000X HD. Maybe more pictures will follow.
Main difference to SDS2000X HD is the single chip instead of the Spartan and Zynq.

[tautech]

That's a pretty busy PCB ! 
Especially when you consider it's in the same small box as SDS1000X HD and 2000X HD.

The 4 metal cans above each of the inputs are interesting, maybe for active probe power ? 

[egonotto]

Hello,

danke.

Can it be, that there are 2 * 5 * K4A4G165WE 4 Gb DDR4-2400 SDRAM on the board?
Presumably 5 * 256 Mpts would then be available for data. But that probably makes no sense.

Best regards
egonotto

[rfindley]

Here you can see the mainboard of a SDS 3000X HD.

Although not all of the silkscreen is readable in the photo, I didn't notice any markings indicating serial port signals.

[Martin72]

I didn't notice any markings indicating serial port signals.

Because there is a very high probability that none are executed.

[Martin72]

That's a pretty busy PCB ! 
Especially when you consider it's in the same small box as SDS1000X HD and 2000X HD.

Note the power connection, 8-pin instead of 4-pin.
There is probably a bit more current going through than with the 2000X HD.

[ebastler]

There is probably a bit more current going through than with the 2000X HD.

On the primary side, the difference is not huge according to the datasheet: 80W typical for the 3000X HD vs. 70W for the 2000X HD. (Both take the mildly annoying 4W of "standby" power.)

[Martin72]

Double cross-section for 10W more....Perhaps the motto was having is better than needing.

[Momchilo]

They are using a different power supply as well (see attachment).

@Tautech I could manage to read the partnumber of the IC underneath the metal cans. They are labeled as "LeCroy HFA757 25G23". Not possible to make a photo of that. Not sure if they use them for the probe interface. But maybe they use the Lecroy ProBus? But I don't think so. It looks like from each LeCroy IC goes a differential pair to the corresponding ADC.

[tautech]

That's a pretty busy PCB ! 
Especially when you consider it's in the same small box as SDS1000X HD and 2000X HD.

Note the power connection, 8-pin instead of 4-pin.
There is probably a bit more current going through than with the 2000X HD.

I had.

4+ are need to pass Line frequency to the Trigger engine.
8 pin is used on X-E DSO's and a # of other products including the SSA/SVA range.

[temperance]

That's a Morsun power supply. That's maybe the reason why deliveries are being delayed because Mornsun has been blacklisted.

[tautech]

That's a pretty busy PCB ! 
Especially when you consider it's in the same small box as SDS1000X HD and 2000X HD.

Note the power connection, 8-pin instead of 4-pin.
There is probably a bit more current going through than with the 2000X HD.

I had.

4+ are need to pass Line frequency to the Trigger engine.
8 pin is used on X-E DSO's and a # of other products including the SSA/SVA range.

Further, in this image you can see the small PCB with the white opto passing mains frequency for Line triggering to the rear panel PCB. Much the same setup is used in SDS2000X+.

[JPortici]

That's a Morsun power supply. That's maybe the reason why deliveries are being delayed because Mornsun has been blacklisted.

Quick, somebody go tell treez! he shouldn't sell his business now that SMPS manufactoring in europe is going to be relevant again

[skander36]

..
Main difference to SDS2000X HD is the single chip instead of the Spartan and Zynq.

The SOC from left is most likely a Zynq. The bigger one can be an Artix.
We wait for more pics.
Thank you!

[Martin72]

Much the same setup is used in SDS2000X+.

And in the 2000X HD, this is a board from the Lecroy shelf.

[tv84]

I know some of you have been anxious for some random mistakes, to make a decision...

[2N3055]

LOL

[Momchilo]

Here you go
Better quality is not possible, just my mobile phone with okayish light. Sorry!

Top left is a Xilinx Zynq XCZU2CG. I am not sure about the large one. I did not remove the heat sinks. I couldn't find anything about another FPGA inside the accessible software part so far. 

[egonotto]

Hello,

@tv84 brilliant
@Momchilo thank you

Best regards
egonotto

[egonotto]

Hello,

with VNC you can use several scopes simultaneously with one PC.

Best regards
egonotto