D E O Select - Hamamatsu Photonics c2400 Instruction Manual

Adjustment o f S h a d i n g
Corrector (OPTION)
W h e
8.5 V i d e o S e l e c t
brighter. Turning the adjusting screw counterclockwise results in
the corners becoming brighter.
4. Ve r t i c a l Sawtooth i ' , .
Adjusting vertical sawtooth decreases the difference in intensity
between the top and bottom of the image. Turning the adjusting
screw clockwise results in the top of the image becoming brighter.
Turning the adjusting screw counterclockwise results in the bottom
of the image becoming brighter.
n the M2503 VIDEO BOOSTER or the M2504 VIDEO INVERTER
i s installed, this switch allows for the selection of the desired video display
mode. The three positions of the VIDEO SELECT switch are NEUTRAL,
BOOST and NEGA.
1. N e u t r a l
In this position (middle), a normal, positive video signal i s
output/displayed.
2. B O O S T
In this position (upper), the output characteristics of the camera
are modified to enhance the visualization of detail in dark portions
of the image. The conversion characteristic(Y) is preset to 0.5 al-
though this value is continuously adjustable from 0.3 to 1.0 (See
Section 10-2 for Y characteristic adjustment).
The basic principle of the conversion is as follows:
OUTPUT INTENSITY
Example
Normal Image
3. I N V E RT E R
In this position (lower), the output video signal is inverted with
regard to input intensity as indicated below.
'I -* 0.5 (Boost Image)
.i .
Y = 1 (Normal Image)
INPUT INTENSITY
, : j — L i v . .
Boost Image
Inversion