### DAY/NIGHT

The Day/Night function improves the camera's sensitivity by automatically switching the camera to the color mode in bright conditions and to the black-and-white mode in dark situations.

Using this function enables 24-hour surveillance with clear video images even during nighttime or in dark locations.

You may also fix the camera to the color or black-and-white video mode without using the Day/Night function.

Automatically switching camera between color and black-and-white video modes using Day/Night function

Switching camera between color and black-and-white video modes when an external control signal is received

Fixing camera to color or black-and-white video mode

This function is supported only by VCC-HD2300P/VCC-HD2300.

The configured settings will be applied to “CAM1” or “CAM2”, whichever you selected under [VIEW].

In AUTO mode, turning off the camera in the black-and-white mode and then turning it back on again switches it to the color mode.

The focused position may differ between the color and black-and-white modes.

When using infrared lighting in the black-and-white mode, the camera may switch to the color mode due to strong reflection from objects in the subject. In this case, adjust the infrared lighting to prevent the switching of video to the color mode.

#### Automatically Switching Camera between Color and Black-and-White Video Modes

1In [DAY/NIGHT], select “AUTO”.

If you select “AUTO”, you cannot set [AGC] to “OFF”.

2In [LEVEL], select the luminance level at which the video mode is switched and click SET.

HIGH: | Sets a high luminance level (to increase the time during which the camera operates in the black-and-white mode).
MIDDLE: | Sets the luminance level to halfway between “LOW” and “HIGH”.
LOW: | Sets a low luminance level (to increase the time during which the camera operates in the color mode).
ADJ: | Enables the manual adjustment of the luminance level.

###### Manually Configuring Mode-Switching Luminance Level (ADJ)

You can select a luminance level between 1 and 7 for both the color to black-and-white switching and black-and-white to color switching. Switching occurs in darker conditions as the luminance level increases.

COLOR→B/W

Select the luminance level at which switching occurs from the color mode to the black-and-white mode.

B/W→COLOR

Select the luminance level at which switching occurs from the black-and-white mode to the color mode.

Changing one of these settings also changes the other setting based on the difference.

To prevent hunting in infrared (IR) lighting, set these luminance levels to widely different values.

#### Switching camera between color and black-and-white video modes when an external control signal is received

Using one of these alarm input terminals as the Day/Night switching terminal, however, enables the camera to be switched between the color and black-and-white video modes when an external control signal is received.

1In [DAY/NIGHT], select “COLOR”.
2In [EXT ALARM], select the desired alarm input terminal and click SET.

ALARM IN1: | Sets the ALARM IN1 terminal as the Day/Night switching terminal.
ALARM IN2: OFF: | Sets the ALARM IN2 terminal as the Day/Night switching terminal. Fixing Camera to Color Video Mode

You need to enable the ALARM IN1/2 terminal and configure the signal polarity in [POLARITY] on the ALARM SETTINGS screen.

Depending on the [POLARITY] setting, the camera will be switched between the color and black-and-white video modes as follows (commonly applied to CAM1 and CAM2):

If [POLARITY] is set to “NO”: Color mode when open; Black-and-white mode when closed

If [POLARITY] is set to “NC”: Color mode when closed; Black-and-white mode when open

If you set [EXT ALARM] to “ALARM IN1” or “ALARM IN2”, the corresponding alarm input terminal will serve dedicatedly as a Day/Night switching terminal, so you can see only the item [POLARITY] on the ALARM SETTINGS screen.

#### Fixing camera to color or black-and-white video mode

###### Fixing Camera to Color Video Mode

In [DAY/NIGHT] and [EXT ALARM], select “COLOR” and “OFF”, respectively, and click SET.

###### Fixing Camera to Black-and-White Video Mode

In [DAY/NIGHT], select “B/W” and click SET.