C-Pen 800C User Manual page 91

Calibration
The Calibration option increases C-Pen's reading ability
if the text is not black, if the background is not white, or if
the text quality is poor. During the calibration process,
C-Pen will find the appropriate balance of black and white
for the particular surface. If your C-Pen reads poorly, try to
calibrate it. However, the default settings should be able to
cope with most cases.
Calibration overrides the factory settings. The calibrated
setting is not saved when C-Pen is turned off. If you want to
revert to the factory setting without turning C-Pen off,
select alibration in Settings and then Calibrate. Select
C
in the dialog box.
DEFAULT SETTING
Inverted (negative) text must be reset in Text Quality.
!
Please note that it is impossible to read red text.
If calibration does not improve the reading accuracy, re-
turn to the default setting.
The Calibration menu contains three items:
1. Calibrate, where you can :
Calibrate immediately by moving the pen over the text
surface, see How to... p. 92 and 93, or return to the
DEFAULT
which is the factory setting.
SETTING
91