Hitachi VK-S454ER, Руководство по обслуживанию

Страница: 42 / 63

6 - 10
Chroma gain adjustment
***********************************************************
ADJUSTMENT
***********************************************************
[1] AUTO IRIS CONTROL
[2] WHITE BALANCE
[3] CHROMA GAIN
[ESC] RETURN TO MAIN MENU
Please select [1] - [3] or [ESC]
Adjustment menu
<< ADJUSTMENT OF CHROMA GAIN >>
ROUGH ADJUSTMENT
FINE ADJUSTMENT
[Crt] + [U] CHROMA GAIN UP
[Crt] + [D] CHROMA GAIN DOWN
[ENTER] SAVE & RETURN TO MENU
[ESC] QUIT
[U] CHROMA GAIN UP
[D] CHROMA GAIN DOWN
<< ADJUSTMENT OF CHROMA GAIN >>
DATA WRITING INTO EEPROM
Chroma gain data write
<< ADJUSTMENT OF CHROMA GAIN >>
ADJUSTMENT FINISHED
PRESS ANY KEY
Chroma gain adjustment complete
Input 3.
Press the D or U, and Cont
key to set the red vector to 220
% ± 5 % of burst vector, and
press Enter key.
Press any key.
Adjustment menu
Fig. 6-5-1 For VK-S454R Fig. 6-5-2 For VK-S454ER Fig. 6-5-3
Adjustment > Adjustment (Camera Adjustment)
6-5-3 Chroma gain adjustment (Figs. 6-5-1, 6-5-2, 6-5-3)
Incompleted Phenomenon
1) Color of the picture is denser than that of the subject.
2) Color of the picture is lighter than that of the subject.
Test Point
Video Out (PG1601-6)
Equipment/Jig
1) Vectorscope or Oscilloscope (It is recommended that you
use a vectorscope when performing this adjustment.You
can use an oscilloscope instead: Note, however, that the
adjustment accuracy will be lower.)
2) C12 light balancing filter
Condition
1) Attach a C12 light balancing filter to lens.
2) Point at a color bar chart.
Procedure
1) Input
3
to PC on the adjustment menu screen.
2) The chroma gain adjustment screen will appear.
3) When using a vectorscope (Figs. 6-5-1, 6-5-2):
Press the
D
or
U
key to set the red vector to approx. 220%
of burst vector. Then, while holding down the
Ctrl
key,
press the
D
or
U
key to set the red vector to approx. 220%
± 5% of burst vector.
When using an oscilloscope (Fig. 6-5-3):
Press the
D
or
U
key to set the red level on waveform to
approx. 620 mVp-p.
Then, while holding down the
Ctrl
key, press the
D
or
U
key to set the red level on waveform to approx. 620 mV ±
20 mVp-p.
4) Press the
Enter
key: The PC display will switch from the
chroma gain data write screen to chroma gain
adjustment complete screen.
5) Press any key to restore the adjustment menu screen.
220%
± 5%
RED
BURST
100%
220%
± 5%
RED
BURST
100%
620mV
± 20mVp-p
RED