AGFA d-lab.3 Digital Compact Lab

Repair
General Data and Information
Glossary
Acousto-optic
AOM amplifier
(acoustooptical
Modulator)
AVR Controller
Banding
Blemish
BOL (begin of line)
BOP (begin of paper)
CC Mode
(capture compare)
CDS process
(Correlated Double
Sampling)
Colour gradations
Checks the interactions between high-frequency Ultrasonic and Hypersonic
waves and electromagnetic waves. The occurring refractive and diffractive
effects are used for the construction of light deflectors, light modulators, light
switches and other acousto-optical components.
The d-lab.3 features an AOM amplifier each for the blue and the green
Laser beam.
Upon a replacement, the characteristic curve has to be recreated
(adjustment assisted by the service program). To create the characteristic
curve, the service technician moves an additional monitor diode into the light
path.
Controller circuit (AVR = registered trademark)
Caused by variations of the transport speed; cause: Irregular running of the
motor, bumps against the exposure unit.
Most clearly visible for the human eye at 0,7lp/mm
Those pixels are considered as Blemish whose correction data exceeds the
available storage range.
Start of exposure
Paper tip detection
Interrupt routine (FL-Controller) for the motor control:
A counter is active in the CC mode that triggers an Interrupt after a given
time. The Port Pin must then be set explicitly in the Interrupt (see also PWM
mode).
Motors: Feeder motor (film width), film transport in the Feeder, Scanner
sledge
Improves the noise distance by means of the CDS method: Each pixel not
only holds the actual pixel value, but also has a Dark Reference which
accounts for local differences of the PRNU. The output signal is used to form
the difference between these two signals.
The two signals are found by a special CDS chip which exists separately for
each quadrant.
The CCD chip contains 6 additional arrays for each quadrant whose pixels
are not active electrically. The average value of their content can be used as
parameter to check the temperature and the dark current (Trigger to repeat
the pixel correction in case the given tolerances are exceeded).
1.024 gradations per colour
Gradations per pixel = RxGxB = 1024x1024x1024 = 1.073.824
DFÜ
Remove data transmission for RDS (Remote Diagnose Service)
Density gradations 1.024
min. density 0,1
max. density 2,1
Differences are easier to discern for the human eye at low densities than at
high densities.
Laser power curve: Smallest gradations for lower densities.
dpi (dots per inch)
FAF (FIFO almost full)
Resolution of digital images
Buffer for the image data (FIFO) almost full
AGFA d-lab.3 2001-01-02 /PN 9009 10.11