THOMSON LDK 200, Technical Manual

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Technical Manual LDK 200 - Camera Head Installation
The camera head is delivered in a ready-to-use state,
however, there are occasions when it might be
necessary to re-adjust some functions after, for
example, fitting a new lens.
A large number of functions can be set-up using the
control facilities of the menu system. In addition to this
software set-up there are some functions which can be
selected or adjusted internally in the camera.
Refer to the next chapters for instructions.
Location of boards
Unscrew the four screws on the left side panel and
swing down the cover.
Front module
1
Sync monitoring board
2
Data board
3
Front driver board
4
Hardware Customization Lens matching
When a camera is supplied with a lens it is not
necessary to perform any of the following adjustments
as the lens is already matched to the camera. However,
if you wish to change to a different type of lens or the
lens is not supplied with your camera, back focus,
white shading and auto iris adjustment procedures
may have to be performed.
• Colour balance.
If required, perform the gain adjustment of the
preprocessor board and/or white shading adjustment
procedures, described in section 3.
• Auto Iris Adjustment
If a different lens either works too slow or overshoots
too much with the auto iris control, adjust the
potentiometer on the lens to obtain acceptable
operation. Refer to the lens documentation.
• Back Focus Adjustment
To adjust the back focus of the lens refer to the
documentation of the lens.
Clear Clear A 1
Star 4P ND1/4
B 2
Star 6P ND 1/16
C 3
Soft focus ND 1/64
D 4
1 2 3 4