THOMSON LDK 200, Technical Manual

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4-2 Technical Manual LDK 200 - Camera Head Adjustments
Introduction
This camera is factory tested and adjusted for operational
use. Under normal circumstances, the internal automatic
calibration procedures do not need to be started and the
internal potentiometers do not need to be adjusted.
There are two situations that might require some
realignment of the camera:
a. When a lens is fitted.
b. When a printed circuit board has been replaced.
When a lens is fitted the following alignment procedures
should be carried out in the order given:
1. Run the internal 3200K calibration procedure.
2. Adjust the white shading via the menu system.
3. Adjust the flare.
4. Adjust the back focus (see lens manual for this
adjustment).
If a printed circuit board is replaced, refer to table 3-1 to
see which adjustments must be carried out to realign
the camera. For a particular board, carry out the
procedures in the order given.
If it is discovered that the camera is misaligned, the
following procedures are given as a guide for competent
service personnel, who have a thorough knowledge of
the camera and have the use of calibrated equipment,
to realign the camera.
If no improvement can be achieved or an adjustment is
out of range, please contact your local supplier or the
nearest Thomson Multimedia Broadcast Solutions
Service Centre.
The camera head adjustment procedures are designed
as separate units. Within a numbered procedure do not
change the position of switches or jumpers unless
instructed to do so in the procedure.
These adjustment procedures are for the Camera
Head. However, for practical purposes the Triax Adapter
is used together with the camera head to facilitate some
measurements. Other adapters can be used for these
measurements.
Table 3-1 Adjustment procedures on board replacement
Printed Circuit Board
Digital video board
Pre-processor board
Lens plate assemble
Data Board
Sync. / monitoring board
Adjustment Procedure
1. Video ADC automatic calibration (internal)
2. Sawtooth calibration (internal)
3. Video gain adjustment
1. Pre-processor calibration (internal)
1. 3200K adjustment
2. White shading adjustment
3. Flare adjustment
1. Software download
1. Video monitoring adjustment