Olin Lathrop wrote:

>> I *LIKE* my TDS-210,
> 
> I have one for my use at a customer, so have acquired some experience with
> it.  My biggest gripe with it is that the horizontal trigger position stays
> fixed in time relative to the center of the screen when you change time
> scales.  It does not stay fixed in screen position as you would want.  This
> may sound like a minor nit, but when you use the scope regularly it gets
> REALLY ANNOYING.  Especially when you expand the time scale the trigger
> position is suddenly gone because it got moved off screen.  If you're not
> used to this "feature", you start fumbling thru the menus trying to figure
> out how you accidentally made the trigger display go away.  

I think it depends a bit whether that's a feature or an annoyance. I think
the logic behind is that whatever you want to look at is at or around 0,
whereas the trigger is where it needs to be so that what you want to look
at is at or around 0. Following this line of thought, it makes sense to
keep the 0 point fixed on the screen, not the trigger point. 

I took me a bit to get used to it, but it's at least not without logic and
makes some sense. Probably best would be to be able to move the 0 point
around on the screen, or to have a configuration item that allows to choose
whether the trigger point or the 0 point is fixed.


OTOH, when I use the zoom feature, all this doesn't really matter -- and
that's what I use mostly when I want to zoom in on a part of the screen.
Quite often it's neither the part around the trigger point nor the part
around the 0 point that I want to zoom in on, and the zoom feature
conveniently lets me preview and adjust in the coarse time base view what
part of the signal I'll be looking at after zooming in. 

Gerhard

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