Hitachi DIGITAL 8 VM-D965LE - Chroma Gain Adjustment

SS
GS
(3) Chroma Gain Adjustment (Figs. 7-1, 7-2, 7-3)
Purpose:
To set the color saturation under the reference color temperature.
Incompleted Phenomenon:
Color of the picture is denser than that of the subject.
Color of the picture Is lighter than that of the subject.
Equipment/Jig:
Oscilloscope (Vectorscope)
Test Point:
Video Out Jack
Condition:
Attach a C12 filter.
Point at a color bar chart.
Procedure:
1) Refer to display 3-1.
2) Press 3 key.
3) Rerer to dispaly 3-5.
4) WhenUsing an Oscilloscope:
Press the U and D keys to set the red level to around 470mVp-p.
Press
the
[Ctrl]
key
and
hold
it
down,
then
press
the
U
and
D
keys
so
the
red
level
is
470mV
+
20mVp-p.
(Fig. 7-1)
When Using a Vectorscope:
Press
the
U
and
D
keys
to
set
the
red
vector
to
around
170%
of
the
burst.
Press
the
[Ctrl]
key
and
hold
it
down,
then
press
the
U
and
D
keys
so
the
red
vector
is
170%
+
5%.
(Figs. 7-2, 7-3)
5) Press [Enter] key, and the display changes as 3-6 and 3-7.
6) Press any key to return to ADJUSTMENT MENU display.
~—— _ Display & Figs
Display 3-1 Display 3-7
ADJUSTMENT MENU « ADJUSTMENT OF CHROMA GAIN »
(GEODESIC RIOD III ISI IOI IOI Ie ADJUSTMENT FINISHED.
ADJUSTMENT PRESS ANY KEY.
RIK RK RARER ER IRIN IRE III III IRIS I IRIS IIA.
[1] | AUTO IRIS CONTROL
[2] | WHITE BALANCE
[3] | CHROMA GAIN
RED
+ 20mV
[ESC]
RETURN
TO
MAIN
MENU
RED
pace
kK
Please
select
[1]-
[3]
or
[ESC]
Display
3-5
«
ADJUSTMENT
OF
CHROMA
GAIN
»
ROUGH
ADJUSTMENT
[U] CHROMA GAIN UP
[D] CHROMA GAIN DOWN
FINE ADJUSTMENT
[Ctrl] + [U] CHROMA GAIN UP
[Ctrl] + [D] CHROMA GAIN DOWN
[ENTER] SAVE & RETURN TO MENU
[ESC] QUIT
Display 3-6
« ADJUSTMENT OF CHROMA GAIN >» ) 1007
DATA
WRITING
INTO
EEPROM.
Fig.
7-2
[For
VM-D965LA/D865LA]
Fig.
7-3
[For
VM-D965LE/D865LE]
E3-9