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ryaee
Ve ML
3-7.
AUTO
SYSTEM
(AT-53
BOARD)
3-7-1.
Low Light
Adjustment
Object:
Grayscale
chart
Equipment:
Waveform
monitor
To
be
extended:
AT~53
board
Preparation:
Set
the
BARS
WB
switch
on
the
side
of the camera
to 3200°K.
Adjustment
point: @RV1/AT-53
board
Adjustment:
1.
Adjust
the
zoom
control
so
that
the
gray-
scale
chart
frame
touches
the
underscanned
picture
frame
on
the
monitor.
Monitor
Screen
2.
Adjust
the
lens
iris
control
so
that
the
white
level of the video
signal
is 310+15mv.
3.
Rotate
@RV1/AT-53
board
counter
clockwise
from
the
rightmose
position.
Until
the
point
where
the
"LOW
LIGHT"
indication
and
the
"LOW
LIGHT"
lamp
light
up
on
the
view-
finder
screen.
4.
Open
the
iris
control
gradually
and
confirm
that
the
white
level
of
the
video
signal
is
295
to
335mV
when
the
"LOW
LIGHT"
indica-
tion
disappears.
When
the
specification
is
not
satisfied,
repeat
step
3.
3-24
3-7-2.
ABL Adjustment
Object:
Grayscale
chart
Equipment:
Waveform
monitor
To be extended:
AT-53
board
Preparation:
Set
the
BARS
WB
switch
on
the
side
of
the
camera
to
3200°K.
Adjustment
point:
@RV4/AT-53
board
1. Adjust
the
zoom
control
so
that
the
gray-
scale
chart
frame
is
underscanned
10%
from
the
underscanned
frame
on
the
monitor.
1)
a
TG
TUT ATT
IHAATI
Monitor
Screen
Grayscale
Chart
Frame
Underscanned
Picture
Frame
10%
2.
Adjust
the
iris
control
so
that
the
white
level
of
the
video
signal
is
700+15mvV.
3. Adjust
@RV4/AT-53
board
so
that
the
black
level
of
the
video
signal
does
not
change
when
charging
over
the
ABL
switch
to
ON
or
OFF.
15mvV-
The
black
level
must
not
change.
CNY
VE Ry!
L[] aia
a
$8
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jCN2 O
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U
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So
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AT-53
soaro
DXC - 325P (EK)
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