User manual

User Manual of IR Speed Dome

don’t support user-defined BLC level.

Task 6: Configuring the iris, gain and shutter speed

 Set the AE 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 AE 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.

HAUTO: Half-auto mode allows you to adjust the iris manually while the camera is actually

adjusting the exposure automatically. HAUTO mode will switch to AUTO mode automatically if

there’s no iris adjustment within 20 seconds, or when the lighting changes in the environment.

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.

Note: 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.

Note: You need to change the IRCUT FILTER as DAY or NIGHT mode, and set the AE 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.

Note: The value of X indicates that the shutter speed is 1/X second. If you set the SHUTTER

value bigger (shutter speed is faster), the amount of entering light per second is fewer, and

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