CCFC Field Camera
66
12.8.4.4.1 LED Power Control
The IR LEDs emit a very bright light that is nearly
invisible to the human eye. Do not look directly at the
front of the camera when the LEDs are on, as they can
cause severe eye damage.
The infrared (IR) LEDs on the camera are used to take pictures and video at
night. To enable the LEDs, select the
Night
Mode
page.
When the IR LEDs are enabled, the camera will automatically switch them on
and off during photo or video capture when the ambient light level drops too
low. Generally, this happens shortly after sunset outdoors. The IR LEDs
remain on while the camera is awake. If the camera is configured to use a low
power mode, the IR LEDs will turn off when the camera goes to sleep.
The IR LEDs and the lens defroster are multiplexed together, so only one will
operate at a time. In a situation where both the IR LEDs and the defroster
should be on, the IR LEDs take priority as they also provide a significant
amount of heat to the lens.
The IR LEDs emit light at 850 nm wavelength in a 12° cone from the
centerline. This is a fairly narrow beam angle, which concentrates the light on
the center of the photo, allowing distant objects up to 100 meters away to be
illuminated.
12.8.4.4.2 Filter Control
Outdoor photos contain a great deal of IR light from the sun. The photo sensor
in the CCFC is sensitive to this IR light and will pick it up causing the photo to
look improperly coloured. The lens on the CCFC is equipped with a switchable
IR filter to counteract this effect.
The setting for the IR filter allows it to be enabled all the time or disabled when
the camera is in night mode, giving the camera extra sensitivity in dark scenes
without having to use the IR LEDs.
When the IR LEDs are enabled and switched on, the IR filter automatically
switches off regardless of the IR filter setting.
12.8.4.4.3 Light Power Control
The Power Control wire can be used to control an external light source or a
relay that activates an external light source. The camera can be configured to
switch the external 12 Vdc (yellow wire) on, based on the available light in the
scene.
The light will only come on when capturing from a timed capture or when an
external trigger occurs while the camera is in sleep mode. The light does not
turn on for motion detect capture. The light turns off after the capture is
complete.
Warning
Содержание CCFC
Страница 1: ...INSTRUCTION MANUAL CCFC Field Camera May 2016 Copyright 2016 Campbell Scientific Canada Corp...
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