Encoder Board NTSC
I amplitude
9.Set I gain potentiometer ZR205 in its
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
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 | |
|
|
| 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
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 | |
|
|
| 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 |