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

7-20. 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 (16:9) in the full underscanned
monitor frame.
. Lens IRIS
AUTO
Adjustment Procedure
Equipment : Waveform monitor
Test point : TEST OUT connector
1. Select the 16:9 mode.
PAGE : S14*WIDE SCREEN
ITEM : 16:9/4:3 MODE
2. 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
3. On the setup menu, adjust as follows.
PAGE : S29*LEVEL 12
ITEM : IRIS SET
: A = 100 ±2 IRE (NTSC)
Spec.
A = 700 ±14 mV (PAL)
4. On the setup menu, set as follows.
PAGE : S29*LEVEL 12
ITEM : IRIS WEIGHT
5. Shoot an area where the auto iris is not wanted to work
in the white window chart.
DVW-790WS/709WS/707
DVW-790WSP/709WSP/707P P2V1
16:9 mode
ENC
CAM/ON
16:9
peak-to-peak level
average level
A
0 (MIN)
6. 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.
7. On the setup menu, adjust as follows.
PAGE : S29*LEVEL 12
ITEM : IRIS SPEED (Factory setting: 2)
Spec. : Set to the desired operation speed of
auto iris.
8. On the setup menu, set as follows.
PAGE : S29*LEVEL 12
ITEM : CLIP HIGH LIGHT
Spec. : Adjust for AUTO iris level to the
customer's specifications.
7-20. Automatic Iris Adjustment
ON or OFF
7-33