Products > Test Equipment
Oscilloscope Zoom Out Quirk
nctnico:
Unfortunately the only way out is to use zoom mode on Rigol.
rsjsouza:
Excellent video, Dave. Thanks for doing this. I only missed doing the exercise of differentiating the buffer size between the Run/Stop and the Single modes on the Tek, just like it was done on the Keysight.
Another interesting detail I haven't noticed is how annoying are the knobs on the Siglent: all have almost the same size. I suspect that would confuse the heck out of me.
--- Quote from: tautech on June 10, 2020, 07:51:11 am ---We look forward to your followup video Dave when you discover the capabilities of 2 obscure buttons on the Siglent front panel. ;) :popcorn:
--- End quote ---
Tautech, why not show the steps to achieve this without cheekiness? Remember that people that come across this thread may be trying to make a purchase decision - since they will not have a Siglent in front of them to explore the mysterious buttons, they will go elsewhere.
jemangedeslolos:
--- Quote from: Gandalf_Sr on June 10, 2020, 09:36:04 am ---Thanks for the video Dave, it captures (no pun intended) the essence of what we've been discussing in this thread.
Next challenge is the associated decode problem that came up in this thread.
Say you've captured a load of data and can zoom out, slide sideways, and zoom back in; you can see the waveform but the decode of the data (this is the gripe) for an RS232 stream can look like garbage. Why? The answer seems to be that the decode is performed on what's on the screen so, unless the decode starts at a valid data block beginning, the entire rest of the decoded data can show as junk - at least it is on my Rigol MSO5074 - even though it's clear that there's good data in the capture. Given the trigger would have been somewhere in the center of the capture, zooming out/scrolling sideways puts us into a situation where we can't control where the data capture starts and the decode algorithms aren't smart enough to search and find the beginning of a valid data block.
Any ideas?
--- End quote ---
Hummm Im pretty sure I have no problem on my MSO7000 so it is maybe a bug to address ?
I can zoom out and all the data now on screen are decoded in the event table.
If I zoom into a packet that was out the screen previously, the serial decode works with no problem.
EEVblog:
Video was just updated. Shortened by a few minutes (just tighter editing), couple of overlay texts added.
EEVblog:
--- Quote from: rsjsouza on June 10, 2020, 10:23:31 am ---Another interesting detail I haven't noticed is how annoying are the knobs on the Siglent: all have almost the same size. I suspect that would confuse the heck out of me.
--- End quote ---
I find that really annoying!
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