Crystal Vision
Card edge operation
23
DEC101SUser ManualV1.0 05/11/03
Setting gain and black level
Use rotary switch (SEL) positions 0 to 4 and the shaft encoder to change the following:
•
Luminance gain and offset (black level)
•
Chrominance gain
The gain and offset adjustments are independent for Composite and Y/C modes. For
example, if the unit is set up in composite mode and subsequently adjusted in Y/C mode,
the composite adjustments are maintained and will be restored when composite operation
is resumed.
There are two sets of independent gain and offset adjustments; composite and Y/C.
SEL
Display Text Description
0
Ygain% 100
The shaft encoder can be used to adjust the luminance gain
1
Yoff+mV 3
The shaft encoder can be used to adjust the luminance offset (black level)
2
CGain% 100
The shaft encoder can be used to adjust both the U and V chrominance gains
3/4
Version No.
Version number is displayed
Note:
The displayed number varies as the shaft encoder is rotated to give an indication of the
setting relative to the factory default
Select position 0 (Ygain) with the 'SEL' control to allow the shaft encoder to adjust the
luminance gain from 0 to 200%.
Select position 1 (Yoff) with the 'SEL' control to allow the shaft encoder to adjust the
black level from –30 to +385mV.
Select position 2 (Cgain) with the 'SEL' control to allow the shaft encoder to adjust the
chrominance gain from 0 to 200%.