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

4-20. 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 (16:9) 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.
DVW-790WS/709WS/707
DVW-790WSP/709WSP/707P P1
5. On the setup menu, adjust as follows.
16:9 mode PAGE
ITEM
Spec.
6. On the setup menu, adjust as follows.
PAGE
ITEM
Spec.
7. On the setup menu, set as follows.
PAGE
ITEM
Spec.
A
4-20. Automatic Iris Adjustment
: E29*LEVEL 12
: IRIS WEIGHT
: Increment the IRIS WEIGHT value
until the lens iris is open.
: 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 the AUTO iris level to the custom-
er's specifications.
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