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Checking After Adjustment; Checking Sync Level Adjustment; Checking Burst Level Adjustment; Checking Set Up Adjustment - Sony DXC-190 Service Manual

Color video camera dxc-190
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4-5. Checking after Adjustment

To check the values after adjustment, remove the
commander and the commander junction fixture from the
camera. Turn off the camera, then turn it on again before
checking.

4-5-1. Checking SYNC Level Adjustment

Check to see if the measured voltage is within the specified
range.
Subject
Measurement point
Equipment
Specification
Lens iris

4-5-2. Checking Burst Level Adjustment

Check to see if the measured voltage is within the specified
range.
Subject
Equipment
Specification

4-5-3. Checking SET UP Adjustment

1 Turn OFF the AGC switch on the side panel of the
camera.
2 Check to see if the measured voltage is within the
specified value range.
Subject
Measurement point
Equipment
Specification
Lens iris

4-5-4. Checking 0 db Adjustment

1 Turn OFF the AGC and CCD-IRIS switches on the side
panel of the camera.
2 Shoot the all-white pattern and adjust the lens iris so
that the CCD LEVEL is the specified value.
Subject
All white pattern
PR Board CN201 1 pin (CCD LEVEL)
Measurement point
Equipment
Oscilloscope (AC 50 mV, 10 us)
Specification
250 20 mV
4-8
Free
SYNC level of VIDEO OUT
Waveform Monitor
40 4 IRE
Close
Free
Vector scope
Burst level is 75 %
Free
SET UP level of VIDEO OUT
Waveform Monitor
7.0 2.0 IRE
Close
3 Check to see if the AD/-IN value (CN302 2 pin) is
within the specified value range.
Subject
Measurement point
Equipment
Specification
* If there is a point where specified value for step 3 is
satisfied while varying the iris within the specified value
range for step 2, the adjustment is correct.

4-5-5. Checking Auto Iris VS Level

1 (Same as 4-5-4 1.)
2 (Same as 4-5-4 2.)
3 Check to see if the measured voltage is within the
Specified range.
Subject
All white pattern
PR Board CN201 6 pin (IRIS OUT)
Measurement point
Oscilloscope (AC 200 mV, 10 us)
Equipment
Specification
700 40 mV
* If there is a point where the specified value for step 3 is
satisfied while varying the lens iris within the specified
value range for step 2, the adjustment is correct.

4-5-6. Checking AGC Adjustment

1 Turn OFF the AGC and CCD-IRIS switches on the side
panel of the camera.
2 Shoot the all-white pattern and adjust the lens iris so
that the VIDEO-OUT image level is the specified
value.
Subject
Measurement point
Equipment
Specification
All white pattern
PR Board CN201 2 pin (A/D-IN)
Oscilloscope (AC 200 mV, 10 us)
60
800
mV
_ 40
All white pattern
Image level of VIDEO OUT
Waveform Monitor
100 2 IRE
DXC-190

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