A.2.4
Setting the Initial Lamp Position
The lamp position must be initialized after assembling the Bookeye® 3 scanner. The
reason for this procedure is as follows:
The scanners lamps turn under software control and project a vertical beam of light onto
the scanning surface. Both lamps and the CCD have to move perfectly synchronized to
achieve the highest brightness level during the whole sweep.
The scanner’s CCD motor and the lamp motors form an electronic gear that performs very
complex movements under software control while scanning books and other objects that
are not completely flat. This only works if the initial position after a power up cycle is in a
known state.
Each lamp has a home position switch that acts as a reference. When a lamp is
assembled into the scanner, the light beam position relative to the home position switch is
unknown. To make known all positions of the above described electronic gear, the
following initialization has to be executed.
All positions in the electronic gear are adjusted via software later but the initial adjustment
must be made manually.
The initialization of the lamps is done in two steps.
•
The first steps is the mechanical adjustment. For the mechanical adjustment the
keys for book cradle control will be used.
•
The second step is the electronic adjustment. The electronic adjustment will be
controlled by the device firmware and runs fully automatically.
During the mechanical adjustment of the lamps the keyboard display shows some
information.
Start the Bookeye® 3 scanner. After some internal tests have been performed, the display
will show the message
READY TO SCAN.
Setup and Assembly Manual
Page 33
