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| Should I buy a Rigol MSO5000? |
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| 2N3055:
Problem is that Rigol does not deny warranty to software hacked equipment.. Good luck with a Keysight scope that you physically changed board, added/changed components and soldered on... Also despite being very responsive, that scope is not so great. Even 4MS on my 3000T is barely usable...Saving grace on 3000T is bunch of measurements, protocols and MSO that is very helpful. 1000 series has almost none of that... Also only 2 ch Unless they are simply replacement for analog scope with same analog workflow, 1000 and 2000 from Keysight are crappy digital scopes. Once MSO 5000 is debugged, it will be more like 3000t series with larger screen and much more memory. Much more.. So for general purpose mixed signal/microcontroller debugging much better. It will be directly comparable to R&S RTB2000 class, and not Keysight 1000/2000 series.. Though it might take some time for this to happen.. |
| nctnico:
--- Quote from: Martin72 on April 07, 2019, 04:43:49 pm ---So we talk about the good old ones, the good "A" brands vs "china crap", better to buy a used scope for the same price instead of a new one and so on. And everyone is the same opinion (me too) for "serious" measures we need an expensive "A" brand scope.. Question is, where are the benchmarks for to judge over this is crap or not, in which measure situation you can separate the boys from the men… For example, I got my private MSO5000 350Mhz still at work, as well we have a Waverunner LT with 350Mhz also - So I could directly compare. Which measurings could expose the rigol as a cheap thing or the opposite as a surprisingly good unit ? Which tests should be done to judge ? --- End quote --- Follow the tests I subjected the R&S RTM3004 to: https://www.eevblog.com/forum/testgear/rohde-schwarz-rtm3000-review/msg1604185/ Note that doing all these tests takes several tens of hours! |
| nctnico:
--- Quote from: 2N3055 on April 07, 2019, 04:50:00 pm ---Once MSO 5000 is debugged, it will be more like 3000t series with larger screen and much more memory. Much more.. So for general purpose mixed signal/microcontroller debugging much better. It will be directly comparable to R&S RTB2000 class, and not Keysight 1000/2000 series.. --- End quote --- If the RTB2000 is your reference level then you can also consider a GW Instek MSO2074A for $1600 (the price includes logic probe pods for 16 digital channels) and hack it to have the spectrum analysis and higher bandwidth. You have to think carefully whether a bigger screen and touch screen are really worth the extra money. Also the MSO2074A and RTB2004 work today and not in a few years from now (or never). |
| dietert1:
The Rigol 5000 with it's 8 GSample/sec could be a nice 1 GHz 2-channel scope if it were prepared for using active probes. If their ASIC supported RIS sampling, it could even make a nice 2 GHz 4-channel sope. But what people discuss here is buying a 70 MHz bandwidth crippled device. The recommendation to hack it to 350 MHz is strange from a professional point of view, because it voids warranty without getting anywhere close to what it should be. This is just asking for trouble, if you think about later firmware revisions. The term warranty has the connotation of not being granted as a present. The difference between a LeCroy DSO and others becomes obvious as soon as you start stacking algorithms, like doing math on resolution enhanced traces or zoom into filtered traces or average FFT spectra. As far as i have seen from our DS2202E, Rigol software engineers don't (yet) have a clear concept on how to achieve that. For example the firmware knows very well how to determine the risetime of a logical signal, so it does determine the two logical levels. But when you start the I2C decoder, you have to setup the level by hand, and you have to do it twice, once for clock and once for data. What if you forgot to setup probe attenuation properly? It will probably break down. Maybe that's how i did not get any meaningful I2C result. Regards, Dieter |
| Martin72:
--- Quote ---Also the MSO2074A and RTB2004 work today and not in a few years from now (or never). --- End quote --- Today, after several firmware updates…..and what means "working" in this case ? The mso 5000 today works too. It did it in Nov 2018 when it was launched and it do it now, after the FIRST firmware update. --- Quote ---Maybe that's how i did not get any meaningful I2C result. --- End quote --- Unfortunately, we don´t use I2C, otherwise I would test it on the mso5000. The decoding on the mso5000 is way better(and stable) than on the ds1054z, we also have in our lab. But access to I2C I don´t have at the moment. --- Quote ---The recommendation to hack it to 350 MHz is strange from a professional point of view, because it voids warranty without getting anywhere close to what it should be. This is just asking for trouble, if you think about later firmware revisions. --- End quote --- You´re right, but for private use it doesn´t matter. Additional, the "hack" vanishes by the next firmware update, see the rigol 5000 hack thread. |
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