Samsung VLUU NV10, Руководство по обслуживанию

Страница: 76 / 163

76
Ⅳ. ADJUSTMENT
9. PUNT adjustment
A. Purpose
This is for getting higher Auto Focus function by adjusting the declination of lenses.
PUNT adjustment is related with the focus lens.
B. Behavior
[Description of the algorithm]
To do the Punt adjustment, set the distance between the camera and Tracking Chart as 80cm and record the data
of each lenses.
[Description of the algorithm]
①
Do the basic settings for the PUNT adjustment
a. Do zoom close (initialization) and zoom open.
b. Set the camera as Program mode, ISO 100, AWB auto, spot metering.
(As the PUNT adjustment is done within the Auto Focus Frame, select the Spot metering.The spot metering is
not affected by the brightness of the circumference. )
c. Make the Log file and create the index (If the files have been made, this step will be skipped).
② Do the PUNT adjustment by changing the zoom step from 0 (WIDE) to 7 (TELE).
The algorithm of each steps are as following.
a. Within the AF step specification, set the offset and margin of the Up and Down part.
(Short scan range: For reducing the adjustment time)
b. Set the Scan step and scan the step until the lens get the correct AF step.
If there is no peak step within the scan range, skip the C step and do the D step.
c. If the gaps between the current zoom step and the previous zoom step are within the maximum and
minimum range, the punt is good.
(Do it from step 1)
d. Set the Scan step and scan the step until the lens get the correct AF step.
(Long scan range) In this case, check whether there is AF step or not. If not, it is bad. If there is AF step, do
the D step.
e. If the gaps between the current zoom step and the previous zoom step are within the maximum and
minimum range, the punt is good.
(Do it from step 1)
f. If the result is bad, record the information on the Log file.
③ Finally, make the Log file and save the adjustment information on the FLASH ROM.