5-4-6.
Auto-iris Adjustment
Equipment: Waveform monitor (R, G, B)
Test Point: SDI 1 connector
Object: Grayscale chart
Preparation
• Setting for MSU
AUTO IRIS button → ON (lit)
DETAIL OFF button → ON (dark)
KNEE OFF button → OFF (lit)
• Shoot the grayscale chart so that the chart frame is aligned with the under scanned monitor frame.
Procedure
1.
Operate the control panel of MSU, and perform the automatic white balance adjustment.
WHITE button → ON(lit)
After the adjustment is completed, the message "AWB : OK" is displayed.
2.
Operate the control panel of MSU, and set as follows.
(1) MAINTENANCE button → ON (lit)
(2) Touch panel operation: [Detail] → [Auto Iris Settings]
3.
To set the operation mode of auto-iris that is depending on a use, set the reaction degree of auto-iris.
(It can be set between the average and the peak value of video signal.)
• Adjustment item : [APL Ratio]
(-99 : peak value to 99 : average)
4.
Adjust the convergence level of auto-iris so that the level of portion A on the waveform becomes the specification.
• Adjustment item : [Level]
• Specification : A = 700±7 mV
A
5.
Store the reference file.
(Refer to the
5-4-7.
Pedestal Level Adjustment
Equipment: Waveform monitor (R, G, B)
Test Point: SDI 1 connector
Preparation
• Setting for MSU
CLOSE button → ON (lit)
• Shoot the grayscale chart so that the chart frame is aligned with the under scanned monitor frame.
HDC4300
5-22
