11
3.
Functions
Set each function by the OSD menu. Part of the function can be set by the RS232 without
displaying OSD menu. See the “5.RS232 Command List”.
3.1.
EXPOSURE
3.1.1.
AE MODE
Set control method of shutter, slow shutter, gain and DC iris lens.
Default: AUTO
AUTO
Automatically control the shutter speed (including SENS UP), gain and DC iris lens in
accordance with the brightness of the subject.
When a bright subject is imaged, lower the brightness to the target value by the shutter
speed and DC iris lens.
When a dark subject is imaged, heighten the brightness to the target value by the gain and
slow shutter.
The max. and min. of the shutter speed is changed in accordance with the “OUTPUT
FORMAT” setting (Table 5). The longer max. shutter speed, the higher sensitivity for the
subject in the dark, but the video resolution will be lowered.
See “3.1.7” for the DC iris lens and “3.1.5” for the slow shutter.
Figure 7. AE = AUTO Behavior (When slow shutter x2 or more, DC IRIS MODE = AUTO)
Dark
Bright
Brightness of
the subject
Slow-shutter
(SENS UP)
Gain
DC-iris
Shutter
