On Mon, 3 Apr 2006 09:11:19 -0400, you wrote:

>Mike Harrison wrote:
>> Incidentally the Agilents zoom around the centre (or optionally one div
>> from the left or right side - I prefer the left option as most of the
>> time you are interested in what happens after the trigger).
>
>Exactly.  I usually have the trigger one division from the left edge.  After
>all, an analog scope basically has the trigger permanently fixed at the left
>edge.  Tek committed a major blunder by not at least making their digital
>scope capable of acting like an old fashioned analog scope many people will
>be used to.  It doesn't have to be the only mode, but it should be there.
>
>I still don't understand why there has to be a mode to select where to zoom
>the time scale around.  Why is it that nobody implements the obvious answer
>of zooming around the current trigger position, at least as an optional
>mode?  It might be useful to have other modes, but that's the one I would
>use 99% of the time and would be fine with as the only mode in a low end
>scope.  It seems they got fancy because they could but forgot to think about
>it.  It feels like the features were implemented by a bunch of software
>weenies that never used a scope.  In the end the optimized for the 1% case
>at the expense of the 99% case.
>

Certainly add it as an option, but the main benefit I find of deep-memory scopes is you don't need
to worry too much about getting the right trigger point - just grab a bunch of time and zoom in.
 
Therefore the point you want to zoom in on is almost always NOT the trigger point, so centering the
zoom on a fixed 'place on the screen' is generally more intuitive than centering on the trigger.

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