THOMSON OCP 42 Manuel D'utilisation page 152

152
2.2.8.8 - KNEE button
Used to make KNEE range adjustments.
These adjustments concern the white compression (knee)
device used to restore the most strongly illuminated parts of
the image over a low dynamic while conserving the colori-
metry of the compressed areas.
Press the button to display the following page:
This page is used to modify the following parameters:
• LEVEL: Compression threshold adjustment in mode
KNEE=MANU or KNEE=AUTO.
• MAN SLOPE: Compression slope in manual mode
(KNEE=MANU).
• KNEE :
- ON: Compressor (Knee) on.
- OFF: Compressor (Knee) off.
ON and OFF switching is obtained directly using the
corresponding button.
• KNEE :
- MANU: The compression start threshold (Knee) is
adjusted by means of the LVL control, the compressor
(Knee) slope is adjustable using MAN SLOPE.
VIDEO OUTPUT
LVL
- AUTO: The start of compression (Knee) threshold is
adjusted by means of the LVL control; the slope is
adjusted automatically according to the video level so
as to restore the most strongly illuminated parts of the
picture over a low dynamic.
- AUTOHOLD: The KNEE LEVEL (LVL) and the
KNEE SLOPE are fixed and imposed by the AUTO
position previously selected.
THOMSON OCP 42/OCP 50
User manual
Chapter 2 -OCP 42/OCP 50 Operating Instructions
L E V E L MAN S L OP E
X X
ON MANU
KN E E KN E E
SLOPE
VIDEO INPUT
Description of pushbuttons
PRE
ON AIR 1
VIEW
LOCK ACTIV CCU STATUS BARS
F1 F2 F3
EXIT
CTRL
DIAG
PRESET GAIN FILTERS DETAIL
STORE DFZ BLACK COLOUR
RECALL KNEE SHUTTER GAMMA
BLACK BAL
LIMIT
B1500M24LA
September 2000
ON
AIR 2
SETTING CALL
F4
NEXT
SKIN MEMORY
WHITE BAL
LIMIT