Automatic Iris Adjustment - Sony Digital Betacam DVW-707 Maintenance Manual

8-19. Automatic Iris Adjustment

Preparation
. On the setup menu, set as follows.
PAGE : S24*LEVEL 7
ITEM : TEST OUT
. OUTPUT/DCC switch (inside panel)
. Shoot a grayscale chart in the full underscanned monitor
frame.
. Lens IRIS
AUTO
Adjustment Procefure
Equipment : Waveform monitor
Test point : TEST OUT connector
1. On the setup menu, adjust as follows.
PAGE : S29*LEVEL 12
ITEM : IRIS MODE
Spec. : Set depending on the application.
(Automatic iris operation mode setting can
be done from the average level to peak-to-
peak level of the video signal.)
IRIS MODE = MIN
IRIS MODE = MAX
2. On the setup menu, adjust as follows.
PAGE : S29*LEVEL 12
ITEM : IRIS SET
Spec. : A = 100 2 IRE (NTSC)
A = 700 14 mV (PAL)
3. On the setup menu, set as follows.
PAGE : S29*LEVEL 12
ITEM : IRIS WEIGHT
4. Shoot an area where the auto iris is not wanted to work
in the white window chart.
5. On the setup menu, adjust as follows.
PAGE : S29*LEVEL 12
ITEM : IRIS WEIGHT
Spec. : Increment the IRIS WEIGHT value until
the lens iris is open.
DVW-790WS/709WS/707
DVW-790WSP/709WSP/707P P2V1
ENC
CAM/ON
peak-to-peak level
average level
A
0 (MIN)
6. On the setup menu, adjust as follows.
PAGE : S29*LEVEL 12
ITEM : IRIS SPEED (Factory setting : 2)
Spec. : Adjust for the desired operation speed of
auto iris.
7. On the setup menu, set as follows.
PAGE : S29*LEVEL 12
ITEM : CLIP HIGH LIGHT
Spec. : Set to the desired position.
8-19. Automatic Iris Adjustment
ON or OFF
8-25