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SHUTTER
In this mode:
-
The shutter opening time may be varied as programmed
in the
“
LOW LIGHT LIMIT
” menu.
-
Auto IRIS opening is automatically adjusted.
-
Gain control is automatic (
AGC ON
).
IRIS
In this mode:
-
The IRIS opening time is fixed to 1/50 second.
-
The auto IRIS opening is manually varied in the
“
IRIS
LEVEL
” menu.
-
Gain control is automatic (
AGC ON
).
MANUAL
In this mode:
-
The shutter opening time may be varied as programmed
in the
“
LOW LIGHT LIMIT
” menu.
-
The auto IRIS opening is manually varied in the
“
IRIS
LEVEL
” menu.
-
AGC gain control is variable as programmed in the
“
AGC
LEVEL
” menu. All items may be accessed in this mode.
BRIGHT
In this mode:
-
The IRIS opening time is fixed to 1/50 second.
-
The auto IRIS opening is manually varied in the
“
BRIGHT
LEVEL
” menu.
-
Gain control is off (0 dB).
LOW LIGHT MODE
AUTO/MANUAL
This parameter is as follows:
-
AUTO
: uses a fixed maximum IRIS opening (1/50 second).
-
MANUAL
: increases camera sensitivity to the detriment of
refreshing frequency (frame rate) using the
“
LOW LIGHT
LIMIT
” value.
These adjustments are possible only in
“
MANUAL
” or
“
SHUTTER
” mode.
LOW LIGHT LIMIT
1/2, 1/3, 1/6, 1/12,
1/25, 1/50, 1/75,
1/100, 1/120, 1/150,
1/215, 1/300, 1/425,
1/600, 1/1000,
1/1250, 1/1750,
1/2500, 1/3500,
1/6000, 1/10000 OF
SECOND
This selects the maximum opening of the IRIS. It is used to
manually set the IRIS opening time.
These adjustments are possible only in
“
MANUAL
” or
“
SHUTTER
” mode.
IRIS LEVEL
F2.0, F1.6, F1.4,
OFF, F22, F19, F16,
F14, F11, F 9.6,
F8.0, F6.8, F5.6,
F4.8, F4.0, F3.4,
F2.8, F2.4
Manual IRIS adjustment (parameter F).
It is used to manually set the IRIS opening time.
These adjustments are possible only in
“
MANUAL
” or “
IRIS
”
mode.
AGC LEVEL
-3DB, 0DB, 2 DB, 4 DB,
6DB, 8 DB, 10 DB, 12
DB, 14 DB, 16 DB, 18
DB, 20 DB, 22 DB, 24
DB, 26 DB, 28 DB
It is possible to automatically control gain (AGC) to one of the
indicated values.
This selection is used to manually set the video signal gain.
These adjustments are possible only in
“
MANUAL
” mode.
BRIGHT LEVEL
0DB ~ 28DB
This function adjusts the camera gain and the IRIS opening
using a special algorithm which may be programmed by the
user. Exposure is controlled by the gain in low light condition
and by the IRIS opening in bright light conditions.
The function may be used only if
“
AE MODE
” is set to
“
BRIGHT
”.
SPOT AE
ON/OFF
If this function is on, the adjustments only use the middle part
of the image.
Table 6
The following items cannot be accessed in if
“
AE MODE
” is set to “
AUTO
”:
LOW LIGHT MODE (fixed to
“MANUAL”)
