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| Should I buy a Rigol MSO5000? |
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| Fungus:
--- Quote from: nctnico on April 05, 2019, 11:29:18 pm ---And I'll repeat myself --- End quote --- Yep. :horse: |
| dietert1:
By current standards (e.g. USB2, Fast Ethernet...) any scope with less than 1 GHz Bandwidth and with passive probes must be considered a learning toy. In fact, when you look at the MSO5000 sales sheet at the batronix website they show a block diagram including active probes, so once again they sell something unfinished. Is it really true the MSO5000 does not come with internal 50 Ohm terminators? So Rigol is just creating confusion and i wonder whether they are behind the bandwidth hack. Maybe they want sell by bandwidth because their "features" aren't solid. I agree completely with ntnico that the best "bang for buck" is a used LeCroy 1 or 2 GHz scope from ebay with a reasonable set of options. The only way to get a serious device for a reasonable price. If you don't trust ebay, you can ask LeCroy themselves for a second hand scope. Regards, Dieter |
| Mortymore:
I just wish that in a near future Rigol or someone else start braking price points in active and differential probes, at the point that we don't have to spend in them as much or more than the cost of the scope. It's great to have a scope hacked from 50..70 MHz to 200...350MHz, but having the passive probes ruin everything :palm: |
| Martin72:
Having any passive probe on high frequency ruins everything. The derating curves are nothing unusual, you can make it a little bit "better", but you can´t fight against the "nature" of a passive probe: http://cdn.teledynelecroy.com/files/manuals/pp006a_manual.pdf --- Quote --- the best "bang for buck" is a used LeCroy 1 or 2 GHz scope --- End quote --- If you need the Ghz bandwith, if you have enough space on your bench to place it onto, if you don´t have a problem with old crt-screens, if you generally don´t worry about the age, appx 20yrs, and the risks of something going defective after all these years, if you don´t need usb and network connections because you have 3.5" disks and diskdrive avaible or love to print the screenshot with the internal printer out or having a rs232 port on your pc, finally if you don´t worry about a few kpts of memory, than you should grab your 1000 bucks and go for a lecoy LC/DDA scope. --- Quote ---Is it really true the MSO5000 does not come with internal 50 Ohm terminators? --- End quote --- Yep and it´s not alone, even the RTB series from R&S don´t have it too. |
| nctnico:
--- Quote from: Martin72 on April 06, 2019, 09:28:49 am ---Having any passive probe on high frequency ruins everything. The derating curves are nothing unusual, you can make it a little bit "better", but you can´t fight against the "nature" of a passive probe: http://cdn.teledynelecroy.com/files/manuals/pp006a_manual.pdf --- Quote --- the best "bang for buck" is a used LeCroy 1 or 2 GHz scope --- End quote --- If you need the Ghz bandwith, if you have enough space on your bench to place it onto, if you don´t have a problem with old crt-screens, if you generally don´t worry about the age, appx 20yrs, and the risks of something going defective after all these years, if you don´t need usb and network connections because you have 3.5" disks and diskdrive avaible or love to print the screenshot with the internal printer out or having a rs232 port on your pc, finally if you don´t worry about a few kpts of memory, than you should grab your 1000 bucks and go for a lecoy LC/DDA scope. --- End quote --- Lecroy isn't the only option. For $1000 you can pick up an Agilent 54835A which has a TFT screen, USB and ethernet. Hack it to become a 54845A and have 1GHz / 4Gs/s on 4 channels or 1.5GHz / 8Gs/s on 2 channels on a scope which is designed for high speed signal analysis. I have used this scope to resolve delays in the tens of ps range. The trigger on this oscilloscope is extremely stable. And there are other options too like the Tektronix TDS700 series. A floppy to USB emulator can solve the problem of needing a disk drive. --- Quote ---Yep and it´s not alone, even the RTB series from R&S don´t have it too. --- End quote --- But the RTB2000 only goes to 200MHz. 500MHz bandwidth without real 50 Ohm inputs is madness. |
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