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2
controlled by AGC only.
4.3 Auto Iris Mode
If an auto iris lens is used, this mode should be set. Under this
mode, the shutter speed is fixed at 1/50 sec. (PAL) or 1/60 sec.
(NTSC). The camera exposure is controlled by AGC and auto
iris lens. The built-in microprocessor will measure the amount of
light received on the CCD and then output the control signal to
iris server built-in the auto iris lens.
4.4 Auto Iris with Variable Shutter Speed
This mode is similar with the Auto Iris Mode, only the shutter
speed is variable. With this function, the camera is able to catch
a fast moving object by higher shutter speed, yet still produce a
clear picture without sacrificing the depth of field. Table 2
shows how to set various shutter speeds.
Table 2. DIP switch (SW1) setting for various shutter speeds
DIP switch No.
1 2 3 4
Shutter Speed
Switch position
1/50 (60) sec.
O O O O
1/100 (120) sec.
O I O O
1/250 sec.
O O I O
1/500 sec.
O I I O
1/1,000 sec.
O O O I
1/2,000 sec.
O I O I
1/4,000 sec.
O O I I
1/10,000 sec.
O I I I
5. ME (Manual Exposure) Setting
AE-ME:
I
(ME position)
Manual Exposure means the exposure of camera is controlled
by fixed shutter speed and gain. Different shutter speed and
gain can be set via combination of DIP switch. The setting of
DIP switch no. 2, 3, 4 (Table 3) determine shutter speeds and
DIP switch no. 6, 7 (Table 4) determine gains.
Table 3. DIP switch setting for various shutter speeds (ME)
6
AE
FL-OFF
BLC
C-IRIS
NORM
Av
AGC
γ
=.45
ME
FL
BLC-OFF
A-IRIS
AI SHUT
Pk
SUPER
γ
=1
O I
AE
FL-OFF
BLC
C-IRIS
NORM
Av
AGC
γ
=.45
ME
FL
BLC-OFF
A-IRIS
AI SHUT
Pk
SUPER
γ
=1
O I
AE
FL-OFF
BLC
C-IRIS
NORM
Av
AGC
γ
=.45
ME
FL
BLC-OFF
A-IRIS
AI SHUT
Pk
SUPER
γ
=1
O I