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Most (Digital-)Scopes are freezing while vertical adjustement...

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bdunham7:

--- Quote from: nctnico on November 15, 2022, 04:30:08 pm ---No. Acquisition is interrupted and whatever is in the buffer gets displayed. That is how R&S works.

--- End quote ---

I don't see how that helps.  I'm not even sure what it means.  Presumably the only time any of these issues matter would be unusual situations, like a low repetition rate signal and a long acquisition.  So some half-eaten acquisition not referenced to a trigger point doesn't seem useful except to give the scope a 'live' feel for those with some sort of OCD over 'lag'.  A briefly frozen previous complete acquisition, lined up with the trigger seems to be a much more useful thing to have displayed.

I see now that I misinterpreted the original complaint--vertical position vs scale--but I still think it is a non-issue.  If your signal is varying that wildly, IMO the thing to do is zoom out a bit, not frantically twiddle the knobs. 

nctnico:
It purely is a user interface design issue indeed. But in user interface design land lag is something people really obsess over. Just watch the TV series 'halt & catch fire' (supposedly about the founding of Compaq) or more recently 'the playlist' (about the creation of Spotify). In both series user interface lag is a source of serious obsession and frustration for several of the characters.

2N3055:

--- Quote from: nctnico on November 15, 2022, 04:30:08 pm ---
--- Quote from: bdunham7 on November 15, 2022, 04:11:55 pm ---
--- Quote from: nctnico on November 15, 2022, 03:53:04 pm ---No. Acquisition can be cancelled/halted/stopped at any point. There is no reason to wait for a full acquisition when a parameter changes.

--- End quote ---

Of course the acquisition can be stopped and restarted, but it has to complete the subsequent acquisition process before the data can be processed and displayed, no?

--- End quote ---
No. Acquisition is interrupted and whatever is in the buffer gets displayed. That is how R&S works.

--- End quote ---

So like Joe said, you put scope to 1s/div, and as soon as you move trace with a knob what happens:

1:  Immediately erases the screen and starts from left side again with changed vertical position.
or
2: Immediately stops the horizontal trace scan  and lets you move what was on the screen up and down. Once you stop, it resets and starts from the left.
or
3: It lets you move trace up and down while simultaneously keep scanning to the right like nothing is happening (except vertical movement, of course)

Thank you.

bdunham7:

--- Quote from: nctnico on November 15, 2022, 05:09:53 pm ---In both series user interface lag is a source of serious obsession and frustration for several of the characters.

--- End quote ---

Although I'm a pretty deliberate sort of machine operator in general, I don't like input lag any more than anyone else.  I just don't perceive the issue we're talking about as input lag.

JPortici:

--- Quote from: 2N3055 on November 15, 2022, 05:17:17 pm ---
--- Quote from: nctnico on November 15, 2022, 04:30:08 pm ---
--- Quote from: bdunham7 on November 15, 2022, 04:11:55 pm ---
--- Quote from: nctnico on November 15, 2022, 03:53:04 pm ---No. Acquisition can be cancelled/halted/stopped at any point. There is no reason to wait for a full acquisition when a parameter changes.

--- End quote ---

Of course the acquisition can be stopped and restarted, but it has to complete the subsequent acquisition process before the data can be processed and displayed, no?

--- End quote ---
No. Acquisition is interrupted and whatever is in the buffer gets displayed. That is how R&S works.

--- End quote ---

So like Joe said, you put scope to 1s/div, and as soon as you move trace with a knob what happens:

1:  Immediately erases the screen and starts from left side again with changed vertical position.
or
2: Immediately stops the horizontal trace scan  and lets you move what was on the screen up and down. Once you stop, it resets and starts from the left.
or
3: It lets you move trace up and down while simultaneously keep scanning to the right like nothing is happening (except vertical movement, of course)

Thank you.



--- End quote ---

FWIW, Tek Does (3) in the 2.5kS scopes, But trigger is disabled

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