Sync./shading board, Sync./shading board -27 – Technicolor - Thomson STUDIO CAMERA LDK 20(S) User Manual
Page 53
Adjustments
Technical Manual LDK 20(S) - Studio Camera
4-27
Sync./Shading Board
Setting-up
Note: Sync./Shading board must be adjusted in combination with Video Processor 1 Board.
1. Put Sync./Shading Board on a service extender.
2. Put Video Processor 1 Board on a service extender and remove jumpers 7, 9, 11, 13, 17 and 19 from
connector B of the service extender to interrupt the input from the front and jumpers 6, 12 and 15 to interrupt
the black shading correction.
3. Short circuit the input to video processor 1 by connecting the following jumpers on connector B of the service
extender:
B7 to B9,
B11 to B13, B17 to B19
4. Recall Factory Standard File on MCP or OCP and close iris. On MCP set:
OPERATE MENU Knee
:
Off
Contour
:
Off
Gamma sel.
:
Lin.
Blk. Str.
:
Off
Filter
:
Cap
Auto Iris
:
Off
SETUP 1 MENU
Flare
:
Off
White clip
:
Off
Sawtooth
:
Off
SETUP 2 MENU
Soft cont.
:
Off
SETUP 3 MENU
Skin cont.
:
Off
SETUP 4 MENU
Asp.Ratio
:
4:3
SETUP 5 MENU
Matrix sel
:
1:1
MAINT. 1 MENU
Wh. shading
:
Off
and
User level
:
4
Black Shading Correction
1. Carry out this adjustment in an ambient temperature of 20°C / 25°C.
2. On Sync./Shading Board set the DC potentiometers ZR265(R), ZR465(G) and ZR665(B) fully clockwise.
3. On Sync./Shading Board set the Edge potentiometers ZR237(R), ZR437(G) and ZR637(B) fully
counterclockwise.
4. On Sync./Shading Board set the Pulse Comp. potentiometers ZR266(R), ZR466(G) and ZR666(B) fully
counterclockwise.
5. On Sync./Shading Board set Horizontal Sawtooth potentiometers ZR236(R), ZR436(G) and ZR636(B) in
their midposition.
6. On Sync./Shading Board adjust the horizontal sawtooth potentiometers for no sawtooth information
(measure on Video Processor 1 Board).
Measure at:
Adjust with:
Required result:
VP1
Sync./Shad.
minimum
X55-12 (R)
ZR263 (R)
horizontal
X55-6 (G)
ZR463 (G)
spike
X55-15 (B)
ZR663 (B)
information
7. Adjust video level equal to blanking DC level.
Measure at:
Adjust with:
Required result:
Correct:
VP1
VP1
X55-12 (R)
ZR211 (R)
X55-6 (G)
ZR411 (G)
X55-15 (B)
ZR611 (B)