Products > Test Equipment
Functional comparison of R&S RTB2000, Siglent SDS2000X and Keysight DSOX1000
Someone:
--- Quote from: rf-loop on April 05, 2022, 07:50:28 am ---What is wrong now. Is it difficult to uderstand "up to" or "max"
If this is difficult I think it is education problem or lack of enough knowledge and experience. I can predict this kind of problems may lead to severe problems when need read what ever instruments or electronics, mechatronics, etc data sheets. Is it correct to say... bug in understanding data sheets. :) :)
--- End quote ---
Peak value does not predict others! yes. A previously popular scope claimed best waveform rate but in real world performed badly:
https://www.eevblog.com/forum/testgear/rigol-mso4000-and-ds4000-tests-bugs-firmware-questions-etc/msg973064/#msg973064
tautech:
--- Quote from: dreamcat4 on April 05, 2022, 07:56:08 am ---
--- Quote from: dreamcat4 on April 05, 2022, 07:49:36 am ---what is the right lecroy scope to compare to the RTB. for example if it includes that specific feature at a low enough price point to be an alternative option to the RTB 2004
--- End quote ---
ah, i remember now Martin72 had one...
https://www.eevblog.com/forum/testgear/siglent-sds2000x-plus-coming/msg4054573/#msg4054573
it was the WS3024Z
--- End quote ---
Only LeCroy had rights to market SDS3000X (WS3000Z) DSO's to western markets and SDS3000 (WS3000) models before them as their development was a joint venture.
2N3055:
--- Quote from: dreamcat4 on April 05, 2022, 07:56:08 am ---
--- Quote from: dreamcat4 on April 05, 2022, 07:49:36 am ---what is the right lecroy scope to compare to the RTB. for example if it includes that specific feature at a low enough price point to be an alternative option to the RTB 2004
--- End quote ---
ah, i remember now Martin72 had one...
https://www.eevblog.com/forum/testgear/siglent-sds2000x-plus-coming/msg4054573/#msg4054573
it was the WS3024Z
--- End quote ---
AFAIK Martin has WS3024 and WS3024Z at work (among other LeCroys). At home he has SDS2104X+..
They recently bought Siglent SDS2104X+ at work too and it seems it fits nicely among its LeCroy "distant relatives"..
tautech:
--- Quote from: 2N3055 on April 05, 2022, 08:13:40 am ---
--- Quote from: dreamcat4 on April 05, 2022, 07:56:08 am ---
--- Quote from: dreamcat4 on April 05, 2022, 07:49:36 am ---what is the right lecroy scope to compare to the RTB. for example if it includes that specific feature at a low enough price point to be an alternative option to the RTB 2004
--- End quote ---
ah, i remember now Martin72 had one...
https://www.eevblog.com/forum/testgear/siglent-sds2000x-plus-coming/msg4054573/#msg4054573
it was the WS3024Z
--- End quote ---
AFAIK Martin has WS3024 and WS3024Z at work. At home he has SDS2104X+..
--- End quote ---
And now at work too !
The lad should be paid a commission. ;D
https://www.eevblog.com/forum/testgear/siglent-sds2000x-plus-coming/msg4067635/#msg4067635
RBBVNL9:
Thanks all for digging so deep into this. And thanks to 2N3055 for suggesting clear terminology. I noted that sometimes specifications sheets are also not super clear on this. The SDS2000X+ spec sheets talk both of “waveform capture rate” and “waveform update rate”. They seem to mean the same thing with these two terms, but I’m not 100% sure and find it confusing.
And yes, the specifications of Siglent use terms such as “up to” or “max" (and they are not the only ones *). Not knowing under which conditions these maxima are reached, it’s hard to decide whether a device meets the specs, and when we can speak of a bug or not.
Having that said, if in a non-trivial case (triggering a simple 1kHz square wave) a device has a score that is orders of magnitude lower than what one would expect (and is orders of magnitude lower than other devices) I do think it’s a relevant thing for users to know about.
--- Quote ---so if this part of the series is all about detecting unusual events or glitches then...
--- End quote ---
I know I called for input on this topic, but I should also mention that my comparison is certainly not aiming to focus on this aspect only, it’s one among many aspects I’m liking into.
* I love, however, the way Keysight provided its waveform update specs: “≥ 200,000 waveforms/sec” on page 12 of their Keysight InfiniiVision 1000 X-Series Oscilloscopes Data Sheet
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