C Technologies Mobile Information Collector C-Pen - Manual (Page 57)

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Please note that it is impossible to read red text.
If calibration does not improve the reading accuracy, return
to the default setting.
The Calibration menu contains three items:
1. Calibrate, where you can :
Calibrate immediately by moving the pen over the text sur-
face, see How to... p. 58, or return to the
DEFAULT SETTING
which is the factory setting.
2. Options, where you can enable/disable the Quick
Calibration option.
Quick calibration is the preferred option if you often
read texts with very different text contrasts. Quick
calibration is disabled as default.
Quick calibration enables C-Pen to start a calibration
as soon as you press Trigg.
The pen tip should be pressed flat against the surface
and held, perfectly still, while you press Trigg for
about two seconds.
3. Cancel, return to the main menu.
!