White Shading Adjustment - Sony HXC-FB75H Service Manual

Preparations
• Setting for the MSU
MASTER GAIN → 0 (0 dB)
SHUTTER → 1/125
FILTER button (ND) → 1 (CLEAR)
AUTO IRIS button → ON
• Shoot the grayscale chart center so that it is aligned with the monitor frame.
Procedure
1. Set as follows by camera setup menu.
MENU: SERVICE
PAGE: ANALOG GAIN
ITEM: ANALOG GAIN R: 0D02. 0000
ITEM: ANALOG GAIN G: 1000. 0000
ITEM: ANALOG GAIN B: 0937. 0000
2. Adjust the R channel level and B channel level.
(1) Adjust the level of portion A
channel waveform.
ITEM: ANALOG GAIN R
(1) Adjust the level of portion A
channel waveform.
ITEM: ANALOG GAIN B
R
A
R
A = A ±5 mV
R G
3. Store the file.
MENU: SERVICE
PAGE: ANALOG GAIN
ITEM: OHB FILE STORE
A message "STORE OK?" appears. Select "YES."
After the store operation is completed, the message "OHB STORE OK" is displayed.
6-3-5.

White Shading Adjustment

Equipment: Waveform monitor (R, G, B)
Test point: SDI OUT connector
Subject: Full-white pattern
Note
When the next condition corresponds to even one, white shading is not adjusted correctly.
• The brightness of the subject is uneven.
• The brightness is not set correctly.
• Iris value of lens is not set correctly.
• Zoom position is not set correctly.
HXC-FB75H/HXC-FB75KC
on R channel waveform so that it becomes the same level of portion A
R
on B channel waveform so that it becomes the same level of portion A
B
G
A
G
B
A
B
A = A ±5 mV
B G
on G
G
on G
G
6-14