Technicolor - Thomson LDK 20(S) technical manual Amplitude, Smpte bar shift

Encoder Board NTSC

I amplitude

9.Set I gain potentiometer ZR205 in its mid-position.

10.Connect MP7 on the encoder board to ground.

11.Adjust with the chroma potentiometer until the colour vector dots correspond with the indication marks on the I-axis of the graticule.

Measure at:

CVBS out

Adjust with:

R4

Required result:

Correct:
IRE
120			0%
100		R	12.5%
80	I	MG
60		Q	5
	YL
40		75 100
			0
20		B	-5
			75%
20		G
		CY
40			100%

Q amplitude

12.On the encoder board disconnect MP7 from ground and connect MP8 to ground.

13.Adjust with the Q gain potentiometer until the colour vector dots correspond with the indication marks on the Q-axis of the graticule.

Measure at:

CVBS out

Adjust with:

ZR202

Required result:

Correct:
IRE
120			0%
100		R	12.5%
80	I	MG
60		Q	5
	YL
40		75 100
			0
20		B	-5
			75%
20		G
		CY
40			100%

14. Disconnect MP8 from ground and check that the SMPTE colour bar signal is correct.

SMPTE bar shift

15. Adjust the SMPTE shift so that the PLUGE signal is within the red bar.

Measure at:

CVBS out

Adjust with:

ZR212

Required result:

Correct:

>50mV10µS

100

90

PLUGE signal

10

0%

Red bar

Adjustments Technical Manual LDK 20(S) - Studio Camera 4-45