Products > Test Equipment

Oscilloscope Zoom Out Quirk

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jemangedeslolos:

--- Quote from: Martin72 on May 09, 2020, 10:53:40 am ---
--- Quote ---It doesn't let me go beyond the screen.
--- End quote ---

I´m not really sure ( as a former rigol owner), but the "bigger" MSO5000 couldn´t do that too.
Maybe a actual owner could test and report it here.

--- End quote ---

The MSO7000 can. It would be surprising if MSO5000 can't.

Gandalf_Sr:
Give me a specific test to try and I'll run it on my MSO5074

nctnico:

--- Quote from: Gandalf_Sr on May 09, 2020, 09:19:51 am ---I vaguely recall that this whole subject started (and then got carved off to a new thread by Dave) because a poster said something to the effect - "this scope doesn't work the way I expect it to and therefore nobody should buy one" - and that was (rightfully IMHO) jumped upon as being unreasonable.

--- End quote ---
Just for clarity: I wrote that for me (personally) it is a hard fail.

nctnico:

--- Quote from: Wuerstchenhund on May 09, 2020, 09:30:29 am ---Since there doesn't seem to be many who specifically ask for that feature in a scope it would help if you could list some actual *models* that support it (which I'm sure you know it appears you wouldn't buy a scope which doesn't). Because my gut feeling is (can't say for sure because we don't usually test for that kind of thing, simply because no-one has ever asked for it) you will find that this is not widely supported.

--- End quote ---
Well, the majority of the major brands seem to bring out scopes which support recording beyond the screen. Since architectural choices are likely to be constant I don't quite follow how you still come to the conclusion it is not widely supported. All the evidence points in the other direction! Sure there will be some models which behave differently so it is wise to check a particular model during the test drive but in general the list with brands is a good starting point. We could go through the effort of listing specific models but that will likely need to start at listing platforms / series.

BTW: I edited my posting and added R&S to the list (marked with yes).

nctnico:

--- Quote from: Gandalf_Sr on May 09, 2020, 02:57:03 pm ---Give me a specific test to try and I'll run it on my MSO5074

--- End quote ---
Set the oscilloscope to 100ns / division, set the memory depth to the maximum number, connect the probe to the calibrator output, set the trigger level to trigger on the signal, set the scope to run mode, disconnect the probe (so no more trigger events; do not press stop!), turn the time/div knob to 200ns/ division. If you get more signal then your scope supports recording beyond the screen.

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