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| Functional comparison of R&S RTB2000, Siglent SDS2000X and Keysight DSOX1000 |
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| pope:
It would be great if there were timestamps on the video. It shouldn't be too complicated and definitely very handy in case someone would like to go back and forth on the whole video series. :) |
| RBBVNL9:
--- Quote ---The Rigol MSO5000 is hardly missed in there. --- End quote --- The honest answer is: I don’t own an MSO5000. If I had one, I would certainly be happy to include it. But I want to base my comparison on first-hand observations... If someone owns both the SDS2k+ and MSO5000, do compare, and be my guest to use the structure of the document prepared for this comparison. (And there are a couple of other scopes I’d love to lay my hand on, too ;-) About including the Keysight DSOX: I thought it would be worth including this one because Keysight, with this oscilloscope, competes squarely with the R&S RTB oscilloscope in the educational market. While the DSOX1204G was only introduced in March 2019, it has a design/UI concept without a touch screen, and I thought it would be interesting to see how that compares. Is the touch screen design/UI concept overvalued, do other things matter more? Or is it really a no-go to buy a non-touchscreen device today? (Note that also the current Keysight InfiniiVision 2000 X-Series has no touch screen…) I also recall EVVBlog’s Dave even recently writing that the DSOX is his go-to scope in the lab. Made me curious too, what qualities make him turn to this instrument, while he (arguable) has choices in his lab? Finally, I found that the DSOX has some nice tricks up its sleeves too that the other scopes I reviewed could learn from. Some examples: (1) when a channel is set to AC coupling, it disables the DC mode of the DVM. The RTB, for instance, does not do this and hence present wrong measurement results. (2) It can do XY imaging with blanking coming in on a “Z” channel. (3) It can link the trigger system to modulation of the internal AWG, thus exploiting the fact the AWG is built into the same device. (4) When in web access mode, the device itself (!) delivers an extensive HTML guide of SCPI commands to the connected computer. Do such points alone make it a more attractive scope than others? I don’t think so. But we do learn from it. |
| Domitronic:
Hello, i think there is a mistake in the document regarding the vertical scale / sensitivity for the Siglent. At least my Siglent has a range from 500µV/div to 10V/div and it is the 100MHz version as received from the dealer without any hacks. So the full range is not only available if the 500MHz option is enabled. This is also a major drawback of the R&S in my opinion. If you work with european mains voltage you need additional x100 probes because with x10 probes the RTB can "only" show 500Vpp. This might not be a big deal for most people i guess. But another drawback in that case is the more or less unusable FFT if you want to check harmonics of 50Hz mains voltage. At least until the last update. Might have changed now but i can't ckeck since i don't have the RTB anymore. |
| RBBVNL9:
Thanks, Domitronic. --- Quote ---i think there is a mistake in the document regarding the vertical scale / sensitivity for the Siglent. At least my Siglent has a range from 500µV/div to 10V/div and it is the 100MHz version as received from the dealer without any hacks. So the full range is not only available if the 500MHz option is enabled. --- End quote --- You are right. On the SDS, the horizontal scale changes with the 500MHz option, but not the vertical scale. Have updated the document (will publish along with a list of other additions shortly). --- Quote ---This is also a major drawback of the R&S in my opinion. If you work with european mains voltage you need additional x100 probes because with x10 probes the RTB can "only" show 500Vpp. This might not be a big deal for most people i guess. But another drawback in that case is the more or less unusable FFT if you want to check harmonics of 50Hz mains voltage. At least until the last update. Might have changed now but i can't ckeck since i don't have the RTB anymore. --- End quote --- Indeed, the Siglent goes to 10V/div (thus 100V/div with a x10 probe) and the RTB only to 5V/div (thus 50V/div with a 10x probe). However, tho things to take into account: 1. The RTB has 12 vertical divisions (compared to 10 on the SDS), so can show 12 * 50 = 600V with 10x probes 2. For mains measurements, I myself prefer to use high voltage differential probes, instead of having to measure between live and the earth point. You can then choose a model with CAT safety ratings corresponding to your tasks These days, there is a fair offer of affordable HV differential probes with x50 and x100 attenuation. Anyway, thanks for the feedback and keep on commenting! |
| Domitronic:
--- Quote from: RBBVNL9 on January 12, 2022, 08:45:58 am --- Indeed, the Siglent goes to 10V/div (thus 100V/div with a x10 probe) and the RTB only to 5V/div (thus 50V/div with a 10x probe). However, tho things to take into account: 1. The RTB has 12 vertical divisions (compared to 10 on the SDS), so can show 12 * 50 = 600V with 10x probes --- End quote --- The RTB has 10 divisions while Siglent has 8 as far as i know. So its 500V with the 10x probes on RTB. And of course it is better to use differential HV probes with main voltages. Less risk to blow anything up compared to standard probes. Thats clear. |
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