AGFA d-lab.3 Digital Compact Lab

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Repair
CG_GS01 - CCD Board
− CG_GS01 is linked rigidly with the lens
− Monochrome CCD chip
− Processing of the control signals (level
conversion) for the CCD
− Adjustment of the image signals
(preamplification) of the CCD for the AD
converter on the CG Controller
− Setting of the voltages for the black value
balance
The level of the current supply of the CCD with
respect to GND is shifted by means of the SW
balance so that an easy activation of the video
preamplifiers is possible. The analogue data is
transmitted to the CG Controller.
The CCD board gets the following control signals
from the CG Controller:
− Clock (10MHz)
− vertical and horizontal synch signals
− special signals for the output of the CCD lines
Differential line pairs ensure an almost troublefree
transmission.
The dark current of the CCD can be balanced by
means of a black value balance of the CG
Controller.
To get optimum conditions for the preamplification
of the image signals, the whole power supply of the
CCD can be shifted. This is achieved via the input of
the black value balance.
See CCD board and LEDs in Register 4.1.
4.3.32 2001-01-02 /PN 9009 AGFA d-lab.3