Checking Agc Adjustment; Checking Color Reproduction Adjustment; Checking Vco Adjustment (Ssc-Dc314/Dc318P) - Sony Super HAD CCD SSC-DC314 Service Manual

4-4-8. Checking AGC Adjustment

1. Turn OFF the CCD-IRIS switch on the rear panel of
the camera.
2. Shoot the all white pattern and adjust the lens iris so
that the VIDEO OUT image level is within the
specification.
Subject
: All white pattern
Measurement point : Image level of VIDEO OUT
Equipment
: Waveform monitor
: 100 ± 2 IRE (SSC-DC314)
Specification
700 ± 15 mV (SSC-DC310P/DC318P)
3. Set the ND filter (transmission factor: 3.125%).
4. Shoot the all white pattern.
Check to see if the VIDEO OUT image level is within
the specification.
Subject : All white pattern
Measurement point : Image level of VIDEO OUT
Equipment
: Waveform monitor
: 40 ± 2 IRE (SSC-DC314)
Specification
285 ± 15 mV (SSC-DC310P/DC318P)
n
If there is a point where the specification for step 4 is
satisfied while varying the lens iris within the specified
value range for step 2, the adjustment is correct.
4-12
4-4-9. Checking Color Reproduction
Adjustment
1. Turn OFF the CCD-IRIS switch on the rear panel of
the camera.
2. Shoot the color bar chart.
3. Adjust the lens iris so that the VIDEO OUT white
image level is within the specification.
Subject : Color-bar chart
Measurement point : White image level of VIDEO OUT
Equipment
: Waveform monitor
: 90.0 ± 2.5 IRE (SSC-DC314)
Specification
640 ± 20 mV (SSC-DC310P/DC318P)
4. Check to see if the center of the bright spot for each
color is within the color reproduction range.
Subject
: Color-bar chart
Measurement point : Respective color bright spot of
VIDEO OUT
Equipment
: Vectorscope
Specification
: The center of the bright spot for each
color is in its respective reproduction
range.
n
If there is a point where the specification for step 4 is
satisfied while varying the lens iris within the specified
value range for step 3, the adjustment is correct.
4-4-10. Checking VCO Adjustment
(SSC-DC314/DC318P)
1. Set a DIP switch on highest of the rear panel of the
camera to LL position.
2. Set to frequency of power supply.
60 Hz ....... SSC-DC314
50 Hz ....... SSC-DC318P
3. Confirm that the VCO CONT (CN301, pin-9) voltage
is within the specification.
Subject
: Unnecessary
Measurement point : CN301, pin-9
VCO CONT/MB board
Equipment : Digital voltmeter
: DC2.1 ± 0.1 V
Specification
SSC-DC314/DC318P/DC310P (UC, CE)