Pre-Processor Board

Gain Adjustment

1. Recall Factory Standard File on MCP or OCP.

On MCP set:

 

 

 

OPERATE MENU

 

 

 

Knee

:

Off

 

Auto Iris

:

Off

 

Matrixsel.

:

1:1

 

SETUP 1 MENU

 

 

 

Wh. Limiter

:

Off

 

Gamma

:

Lin.

 

SETUP 4 MENU

 

 

 

Asp. ratio

:

4:3

 

2. Set the lighting conditions for 100% video output as follows:

Colour temp.

 

:

3200K

Illumination

:

2000lux

Lens aperture

:

F8

 

Scene reflection

:

Reference white 90% (Minolta reference white tile)

(2000 Lux with 90% reflectance is 573 cd/m2)

3.Open the right side cover of the camera.

4.Remove adjustment hatch on right side of front module of the camera.

5.Place Video Miscellaneous Board on a service extender

6.Open Iris at the lens to obtain 700mV at X17A point 19 of Video Miscellaneous Board (Green)

Measure at:

Vid.Misc.

X17A-23 (B)

X17A-27 (R)

Adjust with:

Pre-Proc.

ZR522

ZR122

Required result:

700mV

700mV

Correct:Incorrect:

7.Replace adjustment hatch on right side of front module of the camera.

8.Return Video Miscellaneous Board to its position in the camera.

9.Close camera right side cover.

10.Recall Factory Standard File on MCP or OCP.

Adjustments

Technical Manual LDK 20(S) - Studio Camera

4-57

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Image 83
Technicolor - Thomson LDK 20(S) technical manual Pre-Processor Board, Gain Adjustment