Automatic Iris Adjustment - Sony DIGITAL BETACAM DVW-707 Maintenance Manual

5-16. Automatic Iris Adjustment

5-16. Automatic Iris Adjustment
Preparation
. On the setup menu, set as follows.
PAGE : E24*LEVEL 7
: TEST OUT → ENC
ITEM
. OUTPUT/DCC switch (inside panel) → CAM/ON
. Shoot a grayscale chart in the full underscanned monitor
frame.
. Lens IRIS → AUTO
Adjustment Procedure
Equipment : Waveform monitor
Test point : TEST OUT connector
1. On the setup menu, adjust as follows.
PAGE : E29*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 → peak-to-peak level
IRIS MODE = MAX → average level
2. On the setup menu, adjust as follows.
PAGE : E29*LEVEL 12
ITEM : IRIS SET
: A = 100 ± 2 IRE (NTSC)
Spec.
A = 700 ± 14 mV (PAL)
3. On the setup menu, set as follows.
PAGE : E29*LEVEL 12
: IRIS WEIGHT → 0 (MIN)
ITEM
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 : E29*LEVEL 12
ITEM : IRIS WEIGHT
Spec. : Increment the IRIS WEIGHT value until
the lens iris is open.
5-14
6. On the setup menu, adjust as follows.
PAGE
ITEM
Spec.
7. On the setup menu, set as follows.
PAGE
ITEM
Spec.
A
: E29*LEVEL 12
: IRIS SPEED (Factory setting : 2)
: Adjust for the desired operation speed of
auto iris.
: E29*LEVEL 12
: CLIP HIGH LIGHT → ON or OFF
: Set to the desired position.
DVW-790WSP/709WSP/707P P1
DVW-790WS/709WS/707