Sony PXW-X500, Руководство по обслуживанию

Страница: 149 / 184

Note
• The White Shading adjustment cannot be executed for the correct adjustment values if the object pattern has non-
uniformity or if other conditions such as lens iris setting and zoom setting are not correctly satisfied.
• Use a full white pattern for the White Shading adjustment having uniform brightness over the entire area.
• If a full white pattern having uniform brightness over the entire area is not available, do not execute the G-channel
White shading adjustment. Instead of it, execute the White shading adjustment in the way of aligning the R-channel
waveform and the B-channel waveform to the waveform of G-channel.
White Saw/Para
The White Saw/Para menu can be used to turn White Shading correction On or Off. The White Saw/Para is turned On
automatically when the power is turned On.
Channel Sel
The Channel Sel menu enables selection of the channel (G-ch or B-ch or R-ch) to execute the H Saw, H Para, V Saw,
and V Para white shading adjustments on.
When the Channel Sel menu selects any other channel, the displays of the H Saw, H Para, V Saw, and V Para setup
values are changed to the current setup values of the channel selected by the Channel Sel menu. The changes are reflected
on the H Saw, H Para, V Saw, and V Para setup values.
White H Saw
The H Saw menu enables the horizontal Saw white shading correction (linear increase and decrease) level.
White H Para
The H Para menu enables the horizontal Parabola white shading correction (sensitivity correction at the horizontal center
with respect to both ends) level.
White V Saw
The V Saw menu enables the vertical Saw white shading correction (linear increase and decrease) level.
White V Para
The V Para menu enables the vertical Parabola white shading correction (sensitivity correction at the vertical center
with respect to both ends) level.
White shading adjustment method
Preparation
1. Connect an HD waveform monitor to the SDI OUT terminal.
2. HD waveform monitor setting: RGB mode
3. Focus: ∞
4. Shoot an all white pattern over the entire frame of monitor screen.
Adjustment Procedure
1. Adjust lens iris until white level becomes approximately 80
％
.
2. If the lens iris value is larger than F5.6, adjust the incoming light intensity by using electronic shutter for the lens
iris setting of smaller than F5.6.
PXW-X500
4-7