Products > Test Equipment
Yet another scope recommendation
BenjiBango:
--- Quote from: Fungus on June 05, 2024, 09:20:06 pm ---nb. Probing with ordinary probes will completely dominate what you see on screen once you go over about 50MHz.
--- End quote ---
Noticed this lately, that's why I moved to "solder-in" probes to have at least a good connection with a short ground path.
--- Quote from: tggzzz on June 05, 2024, 09:55:13 pm ---
Consider using a scope to verify signal integrity, then flipping to the digital domain and using an LA or protocol analyser.
It might be worth your looking at the Bus Pirate 5 for SPI/UART/etc, costs around £40.
--- End quote ---
The last times I used the LA was more for power sequencing rather protocol analyzing. Sometimes you just run out of channels.
But I will take a look at the Bus Pirate, seams like a nice tool. Thanks for the hint.
--- Quote from: tautech on June 05, 2024, 10:43:04 pm ---Demand has resulted in shortages of stock in some markets.
--- End quote ---
Oh OK, understood. Seams like Siglent hit the right spot with that.
--- Quote from: tautech on June 05, 2024, 10:43:04 pm ---Data points
SDS2000X Plus is a 500 MHz design.
SDS1000X HD is a 200 MHz design.
Very similar to use as they both share the same UI as does SDS800X HD which is a different form factor and utilises most of the front panel UI as the SDS1000X-E it evolved from.
--- End quote ---
This is something which kind of puzzled me. From what I saw in the datasheet, and what you also said now is, that the SDS1000 and the SDS800 are basically the same scope. Why bother releasing two of the same? Even more as if compared as 200 MHz versions, one is about €600 more expensive. I mean that with no ill in mind, I was just wondering what might be the decision behind that. I would hardly believe that the bigger display and a second USB port, FlexRay and CAN FD decoder would cost that much. Is there some other reason why the 1000 exists (with this price gap)?
tautech:
--- Quote from: BenjiBango on June 06, 2024, 05:21:39 am ---
--- Quote from: tautech on June 05, 2024, 10:43:04 pm ---Demand has resulted in shortages of stock in some markets.
--- End quote ---
Oh OK, understood. Seams like Siglent hit the right spot with that.
--- Quote from: tautech on June 05, 2024, 10:43:04 pm ---Data points
SDS2000X Plus is a 500 MHz design.
SDS1000X HD is a 200 MHz design.
Very similar to use as they both share the same UI as does SDS800X HD which is a different form factor and utilises most of the front panel UI as the SDS1000X-E it evolved from.
--- End quote ---
This is something which kind of puzzled me. From what I saw in the datasheet, and what you also said now is, that the SDS1000 and the SDS800 are basically the same scope. Why bother releasing two of the same? Even more as if compared as 200 MHz versions, one is about €600 more expensive. I mean that with no ill in mind, I was just wondering what might be the decision behind that. I would hardly believe that the bigger display and a second USB port, FlexRay and CAN FD decoder would cost that much. Is there some other reason why the 1000 exists (with this price gap)?
--- End quote ---
A cursory look at the datasheet might indicate that and while they have a similar feature set 1kX HD is a lot more scope.
Memory specs are slightly different.
50 Ohm inputs.
Ext trigger BNC
Probe autosense < totally wasted as Siglent don't supply sense probes with either model in this series, oh how I wish they did.
Additional Decodes and larger display you have mentioned.
What can't be conveyed in the datasheet is the build quality and encoder feel which is much superior IMO to SDS800X HD.
I too think they are a little overpriced and of any of the current lineup, a candidate for promotional activities to boost sales in the future. :popcorn:
Still, if I was to pick one to use all day SDS1000X HD would be my choice in this price segment.
2N3055:
--- Quote from: Doctorandus_P on June 05, 2024, 05:01:14 pm ---I recently bought an Siglent SDS1104X-E for EUR450 and it's already a much better scope then I need.
12-bitters are now becoming more main stream, and having more resolution is nice, but it's also limited as long as the general accuracy of your scope is still 5% or so and the resolution of the display is much lower.
--- End quote ---
Maybe I don't understand what you said..
On new 12 bit scopes accuracy is also much better. For instance SDS800XHD has DC gain accuracy
(typical) 0.5 mV/div ~ 4.95 mV/div: ±1.5 %; 5 mV/div ~ 10 V/div: ±0.5 %.
Also SDS1000X-E has screen res of 800×480 and SDS800XHD has 1024×600 pix.
BenjiBango:
--- Quote from: tautech on June 06, 2024, 05:45:02 am ---A cursory look at the datasheet might indicate that and while they have a similar feature set 1kX HD is a lot more scope.
Memory specs are slightly different.
50 Ohm inputs.
Probe autosense < totally wasted as Siglent don't supply sense probes with either model in this series, oh how I wish they did.
Additional Decodes and larger display you have mentioned.
--- End quote ---
Sure, haptics are sadly no datasheet entries ;D
But isn't the memory depth the same for the SDS82(2/4)X HD and the SDS1000X HD Series? It just seems to be an actual hardware thing that only the 200 MHz versions have the bigger memory.
--- Quote from: tautech on June 06, 2024, 05:45:02 am ---I too think they are a little overpriced and of any of the current lineup, a candidate for promotional activities to boost sales in the future. :popcorn:
--- End quote ---
And you don't happen to know when such activities might occur ;)
2N3055:
--- Quote from: BenjiBango on June 05, 2024, 06:04:59 pm ---
--- Quote from: Doctorandus_P on June 05, 2024, 05:01:14 pm ---If you want a decent advice for a scope in the EUR1500 price range, you will have to give a whole lot more information about the things you want to do with it.
--- End quote ---
I'll try to answer as best as I can:
Troubleshooting and "verification" for several interfaces with higher bandwidth (uSD, USB, RGMII, LVDS, CSI). Sure some is diffpair, but for a initial test it is sometimes nice to see if this interface works at all. Same for uSD interfaces or Q/OSPI.
--- End quote ---
USB, RGMII, LVDS, CSI are fast serial interfaces. Some very fast.
To really check signal integrity on those high BW scope with active probing is needed.
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