The digitizer measures angle or tilt of the pen, Peter, which is why we need
to calibrate right- or left-handed. It does not require the pen to be held
at a 90-degree angle at all. This is from the September 1, 2004, Tablet PC
Chat on the Expert Zone, in a response from Robert Williams of the Tablet
Team at Microsoft:
=====
Q: The calibration tool says it's important to calibrate your screen for
portrait and landscape. How come?
A: Good question. There is a lot of misunderstanding about the calibration
tool. I will try to address some of it here. The calibration tool is not a
linearity calibration. That work is done by the manufacturer in cooperation
with the digitizer supplier. It's fixed in the design. The calibration tool
on the tablet is a pen tilt calibration. It corrects for pen angle because
the tip of the pen and the end of the sensor in the pen barrel are about 1mm
apart. As the angle at which one is holding the pen varies by location on
the screen and orientation we suggest calibration in both orientations.
=====

The best calibration is achieved when the user holds the pen as they would
naturally, i.e., at a slightly tilted angle to the screen, just as you would
hold a pencil when writing on a piece of paper.
--
Chris H.
Microsoft Windows MVP/Tablet PC
Tablet Creations - http://nicecreations.us/
Associate Expert
Expert Zone - www.microsoft.com/windowsxp/expertzone


"Peter" <peter@peter2-o-0-o.co.uk> wrote in message
news:lo2k81ljk69b8a1aikq4bm933gh43ovf6g@4ax.com...
>
> I see this effect too, on an ix104 tablet. The x box (to close
> programs) is tricky to work.
>
> One obvious thing that's worth remembering is that the digitiser wants
> you to use the pen upright. It won't be accurate unless the pen is
> help at 90 degrees to the surface.
>
>
> Peter.
> --
> Return address is invalid to help stop junk mail.
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