8.4 Modem power control
Modem Power Control controls the power for a communication device. One common
application is to have the camera control the power to a communication modem at a solar-
powered site. Refer to
(p. 100) for configuration details using the web
interface.
This power management feature can greatly reduce the system power requirements by only
turning on the modem to transmit a photo or video. The Modem Power Control turns on under
the following conditions:
l
The camera is in one of its low power modes and the Setup Button is pressed. The camera
will exit the low power mode and stay awake for 5 minutes with the switched power output
on.
l
A capture event has occurred that requires communications, including FTP or Email
transfers. Events requiring camera memory storage will not turn on the switched power
output, as these events do not require a modem for communications. It takes the camera
approximately 90 seconds to boot up after power is applied; immediately thereafter, the
camera can capture and transfer files.
8.5 Lens
The CCFC lens contains the following features:
l
Electronic zoom
l
Automatic focus
The zoom and focus can be adjusted through the web interface (see
8.5.1 Camera lens and field-of-view
The CCFC includes a 4.7 to 84.5 mm lens, which provides approximately a 3-degree horizontal
field-of-view when fully zoomed in and a 55-degree horizontal field-of-view when fully zoomed
out. The aperture size is F/1.6 to F/2.8.
8.5.2 Camera auto focus
The auto focus occurs before each capture to ensure photo quality and compensates for any
variations due to temperature or other external factors. The auto focus can also be used through
the web interface Live Preview for photo capture. The auto focus occurs with each manual zoom
action when adjusting the zoom position from the web interface. If the auto focus fails, the lens
CCFC Field Camera
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