Auto Iris Setup - Sony BVP-900 Series System Manual

4-5-4 Auto Iris Setup

The requirements for the Auto Iris Adjustment can be
adjusted as required.
Use the menu operation block of the MSU-700A/750.
The Maintenance Menu permits you to adjust the
convergence target of the automatic iris adjustment,
APL mix ratio, and loop gain.
To adjust on the Maintenance Menu
Proceed as follows:
1
Press and light the MAINTENANCE button.
The Maintenance Menu appears on the display.
2
Press [Lens Adjusting].
The Lens adjustment item menu appears.
3
Press [Auto Iris] to set it to inverse video.
The lower half of the display becomes the Auto
Iris Setting display.
4
Adjust the necessary items.
Auto Iris sensitivity patterns
Select the sensitivity patterns for the picture in the
Auto Iris adjustment.
Press the desired pattern select button to set it to
inverse video.
From the left, the buttons are for the following
patterns.
• Pattern to suppress the sensitivity in the upper
area of the picture.
• Pattern to suppress the sensitivity in the
surrounding area except the center of the picture.
• Pattern to suppress the sensitivity at the left and
right edges of the picture.
• Pattern for the sensitivity uniform to the entire
picture.
With the Paint Menu, you can select a mode to use a
subject of the specified color phase and width as the
reference of the automatic iris adjustment. The Auto
Iris sensitivity patterns can be selected from both
menus.
Maintenance menu
MODE
Maintenance Menu
Adjusting CAM SW
Setting
MULTI
Lens VCS
Adjusting Adjusting
CARD
CONFIG
1
MAINTENANCE
FILE
PAINT
Lens adjustment item menu and Auto Iris Setting display
Clear
Auto Iris
V Mod
Flare
Saw
Auto Iris Setting
Level APL Ratio
-5 6
Auto
Setup
2
Example: MSU-700A
Home
1
1
Iris Gain
-90
Auto Iris sensitivity
patterns
(Continued)
4-43
Chapter 4 Adjustments