OHB
File data
Total adjustment data
Scene
Lens
Reference
For detail of adjustment data, Refer to
Reference File
• The reference file stores the custom paint data adjusted by the video engineer as standard paint data.
• The service engineer can store reference file in the camera and USB drive.
• The reference file stored in the USB drive(For back up) can be reset after adjustment.
Lens File
• Lens file is used for compensating the deviation generated by switching the lens extender from OFF to ON and
for compensating the difference in the characteristics between lenses.
• The lens file is saved to a camera.
• When adjusting with lens file, mount the lens that customer uses actually.
OHB File
• OHB file is used for adjustment for the CMOS block maintenance.
• OHB file is saved in the camera.
5-1-3.
Handling the Grayscale Chart
It is preferable to use an 89.9%-reflective grayscale chart for electrical adjustments.
If a reflective chart is not available, use a calibrated pattern box and a transparent grayscale chart for adjustments.
Before beginning adjustment, set the illumination of the light source (or the luminous intensity on the chart surface)
properly proceeding as follows and set the color temperature to 3200 K exactly by adjusting light.
Information on the Reflective Grayscale Chart (16 : 9)
Recommended chart
The reflective grayscale chart (16 : 9) is commercially available.
• Product name: Reflective grayscale chart
• Supplier: MURAKAMI COLOR RESEARCH LABORATORY
Handling precautions
• Do not touch the chart’s surface with bare hands.
• Do not subject the surface to dirt or scratches.
• Do not prolonged exposure to sunlight.
• Protect the chart from excessive moisture or harmful gas.
• Avoid resting articles against the case.
• When the chart is not used for a long period and is stored, open the case and dry the chart for about an hour once
or twice a month.
Setting Illumination
Measuring equipment : Illuminance meter (Calibrated)
Procedure
1.
Turn on the light source.
HDC4300
5-2
