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Checking Wb Adjustment (3200K Preset And Data Take-In); Checking Color Reproduction Adjustment - Sony DXC-190 Service Manual

Color video camera dxc-190
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3 Set the ND filter (transmission factor: 6.25 %).
4 Turn ON the AGC switch on the side panel of the
camera, and turn NORM the TURBO/NORM switch
5 Shoot the all-white pattern. Check to see if the
VIDEO-OUT image level is within the specified value
range.
Subject
Measurement point
Equipment
Specification
* If there is a point where the specified value for step 5 is
satisfied while varying the lens iris within the specified
value range for step 2, the adjustment is correct.
Or, if there is a point where the specified value for step
5 is satisfied while varying the VIDEO LEVEL on the
side panel, the adjustment is correct.
4-5-7. Checking WB adjustment (3200K
preset and data take-in)
Checking ATW operation
1 Set the WB switch on the camera side panel to the
ATW-PRO position, and turn OFF the AGC and CCD-
IRIS Switches.
2 Set the C14 filter.
3 Shoot the all-white pattern. Adjust the iris diaphragm
so that the VIDEO-OUT image level is set within the
specified value range.
Subject
Measurement point
Equipment
Specification
4 Check to see if the white bright spot on the vector-
scope converges to meet the specified value.
Subject
All white pattern
Measurement point
White bright spot of VIDEO OUT
Vectorscope
Equipment
Conver-
Within 30 seconds
gence time
Specifica-
tion
Within a radius of 15 % of the vector-
Conver-
scope's diameter of the origin
gence spot
(Suppose the vectorscope's
diameter is 100 %.)
5 Remove the C14 filter and perform step 3 and step 4.
DXC-190
All white pattern
Image level of VIDEO OUT
Waveform Monitor
65 5 IRE
All white pattern
Image level of VIDEO OUT
Waveform Monitor
65 3 IRE
4-5-8. Checking Color Reproduction
Adjustment
1 Turn OFF the AGC and CCD-IRIS switches on the side
panel of the camera.
2 Shoot the color bar chart.
3 Adjust the iris diaphragm so that the VIDEO-OUT
white image level is set within the specified value
range.
Subject
Measurement point
Equipment
Specification
4 Check to see if the center of the bright spot of each of
the colors is within the color reproduction range.
Color Bar Chart
Subject
Respective color bright spot of VIDEO
Measurement point
OUT
Vector scope
Equipment
The center of the bright spot for each
color is in it's respective reproduction
Specification
range.
* If there is a point where the specified value for step 4 is
satisfied while varying the lens iris within the specified
value range for step 3, the adjustment is correct.
Color Bar Chart
White image level VIDEO OUT
Waveform Monitor
90 2.5 IRE
4-9

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