User Manual of HD-TVI Speed Dome
© Hikvision
21
don’t support user-defined BLC level.
Task 6:
Configuring the iris, gain and shutter speed
Set the Exposure Mode
Purpose:
AE mode defines the priority of iris, shutter and gain while the speed dome adjusting the
brightness of the live view. You can change the mode on
EXP MODE
submenu.
AUTO:
Auto iris, auto shutter and auto gain. The speed dome adjusts the values automatically
responding to the lighting conditions. It is the default mode.
IRIS:
User-defined iris value, auto shutter and auto gain. It is the iris-priority mode. Please
define the iris value according to related content in this section if you choose
IRIS
mode.
SHUTTER:
User-defined shutter speed, auto iris and auto gain. It is the shutter-priority mode.
Please define the shutter speed according to related content in this section if you choose
SHUTTER
mode.
MANUAL:
User-defined iris, gain and shutter. Please define the iris value, gain value and
shutter speed according to related content in this section if you choose
MANUAL
mode.
Set the Iris Value
The
IRIS
value measures the amount of light entering to the lens. You can set the iris value from
0 to 17 in response to the changing light conditions.
Iris is fully closed at value 0 and fully open at value 17.
Set the Gain
1. Gain value. The value of gain indicates the amplification degree of the original image signal.
You can set the value from 0 to 15.
2. Gain limit. The higher gain value you set, the more noises will appear in the image. You can
set the maximum user configurable gain value from 0 to 15 to limit the gain range and control
the noises in the image.
You need to change the
DAY/NIGHT
as
DAY
or
NIGHT
mode, and set the
EXP
MODE
as
MANUAL
before you adjust the gain value.
Set the Shutter
Purpose:
The speed of the electronic shutter controls the amount of light entering to the lens in a unit of
time (a second). You can manually configure the shutter speed for the speed dome, and you can
also enable the slow shutter function for low lighting circumstances.
(1)
Shutter speed. The larger you set the
SHUTTER
value (the faster the shutter speed is), the
fewer the amount of entering light per second is, and the darker the image is. You can set
the value as 1, 2, 4, 8, 15, 30, 50, 125, 180, 250, 500, 1000, 2000, 4000 or 10000.