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| Capture Peak Strain Gage Fluctuation For Shotgun Chamber Pressure Measurement |
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| Silver_Is_Money:
Is Oscilloscope "rise time" something to be considered when selecting a DSO for this project? I've been looking at the new Rigol DHO802 due to its features for the $299 price, but I see that it's rise time is only rated at less than or equal to 5 ns,, whereas better DSO's seem to be rated at 3.5 ns or better. |
| Silver_Is_Money:
I'm now wondering how I might make this project fully (and literally) field operable, and with that in mind I've come across the FNIRSI 1013D Digital Tablet Oscilloscope, which runs on an internal battery and claims up to 4 hour battery life (wherein a real-world 2 hour life would be sufficient for my needs). The greatest drawback I'm seeing (upon initial casual look at the specs) for this tablet oscilloscope is that its DSO storage memory for waveform event recording is only a paltry 240 kbits. Would this highly limited storage depth be a deal killer for my project application? |
| bdunham7:
--- Quote from: Silver_Is_Money on December 24, 2023, 09:45:19 am ---Is Oscilloscope "rise time" something to be considered when selecting a DSO for this project? I've been looking at the new Rigol DHO802 due to its features for the $299 price, but I see that it's rise time is only rated at less than or equal to 5 ns,, whereas better DSO's seem to be rated at 3.5 ns or better. --- End quote --- Rise time and bandwidth are correlated. 3.5ns is a 100MHz scope, 5ns is a 70MHz version. I'll skip the math and theory on that. Nanoseconds aren't going to matter in your application. --- Quote --- The greatest drawback I'm seeing (upon initial casual look at the specs) for this tablet oscilloscope is that its DSO storage memory for waveform event recording is only a paltry 240 kbits. Would this highly limited storage depth be a deal killer for my project application? --- End quote --- Yes, that limited memory will make your setup more difficult. It can be done, but you'd have to have a surefire triggering system and I don't mean for the shotgun. Long acquisition times give you the luxury of capturing your event and then zooming back to it. FNIRSI is pretty crap from what I've heard elsewhere, you'd probably be better off looking at MicSig tablet scopes if you want battery operation and good portability. I've no direct experience with either. |
| johansen:
https://www.checkline.com/product/TS621HD 40khz should be fast enough. |
| Silver_Is_Money:
--- Quote from: bdunham7 on December 24, 2023, 05:26:41 pm ---Yes, that limited memory will make your setup more difficult. It can be done, but you'd have to have a surefire triggering system and I don't mean for the shotgun. Long acquisition times give you the luxury of capturing your event and then zooming back to it. FNIRSI is pretty crap from what I've heard elsewhere, you'd probably be better off looking at MicSig tablet scopes if you want battery operation and good portability. I've no direct experience with either. --- End quote --- Thanks! The MicSig tablet DSO's look great! The only problem I see is that the lowest priced model I see (in an admittedly quick search) costs about 5 times more than the Frnsi tablet. |
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