Technicolor - Thomson LDK 20(S) technical manual Black Offset, Vertical sawtooth offset

Video Processor 1 Board

Black Offset

6.In the Install/Gain menu set the gain for + to 12dB and for ++ to 30dB (the standard values are 6dB and 12dB).

7.While switching between 0dB gain and 30dB gain, adjust black level during the active line to the same as the clamp level.

Measure at:

X56-14(R)

X56-8(G)

X56-20(B)

Adjust with:

ZR208 (R)

ZR408 (G)

ZR608 (B)

Required result:

0mV (R)

0mV (G)

0mV (B)

Correct:
10mV	10µS
100
90
10
0%

Incorrect:
10mV	10µS
100
90
10
0%

Note:

When the standard file is recalled the black levels are set as follows: Master=50, R=50, G=50, B=50.

Vertical sawtooth offset

8. Adjust for no sawtooth information.

Measure at:	Adjust with:	Required result:
MP211	ZR214
MP411	ZR414
MP611	ZR614

Correct:

50mV2mS

100

90

10

0%

Incorrect:
50mV	2mS
100
90
10
0%

9.In the Install/Gain menu reset the gain for + to 6dB and for ++ to 12dB.

10.On service extender, return jumpers 6, 12 and 15 to their positions.

Horizontal Sawtooth

11. Place Sync./Shading board on extender and minimise the horizontal spike information.

Measure at:

VP1

X55-12 (R)

X55-6 (G)

X55-15 (B)

Adjust with:

Sync/Shad.

ZR263 (R)

ZR463 (G)

ZR663 (B)

Required result:

No spike

No spike

No spike

Correct:

50mV

100

90

10

0%

20µS

Incorrect:
50mV	20µS
100
90
10
0%

12. Remove Sync./Shading board from service extender and return it to its position in the camera.

Adjustments Technical Manual LDK 20(S) - Studio Camera 4-7