Campbell Scientific CC640 Digital Camera - Manual (Page 13)

CC640 Digital Camera
The video output can be turned on and/or off by pressing the Setup Button
when the power switch is in the ON position.
During every image acquisition sequence the video output will be momentarily
activated when the image is acquired, allowing the operator to view the image
that is being captured.
3.6 External I/O Connector
The External I/O connector provides inputs and outputs for operating camera
peripherals. Please contact a Campbell Scientific sales representative for details
and availability of the CC640 peripherals.
The Ext. (External Control) input signal can be used to initiate an image
acquisition. An image acquisition can be initiated on demand by applying a
voltage pulse to the Ext. input. The camera will remain in its quiescent state
when the signal to this input remains at logic low (Less that 0.7 Volts). To
initiate an image acquisition the input should be pulsed high (4.0 - 15 Volts).
The recommended duration of the pulse is between 1ms and 10 seconds. See
Section 2.3 for a sample.
Leaving the Ext. input signal high for more than 10 seconds will result in
another image acquisition starting immediately after the completion of the first.
If the Ext. input signal is left in the High state continuously, the camera will not
enter its low power mode and images will be acquired on a continuous basis.
The Ext. Control Input signal is operated with the power switch in the Auto
mode. If the power switch is left in the ON position the LED will flash twice
and begin an image acquisition when a positive Ext Signal is detected,
providing easy confirmation of an externally applied signal.
3.7 LED (Green)
The green LED is intended to provide feedback for the operator. On power up
the LED will slowly flash 4 times, indicating that a normal power-on sequence
has occurred. If the LED flashes rapidly for several seconds, it means that the
camera failed one of the power-on tests. This response is rare and will require
that the camera be returned to an authorized repair facility.
The LED will also flash once if the Setup button is pressed and twice if the
SNAP button is pressed. During communication or a firmware update the LED
will remain ON to indicate a process is in progress that should not be
interrupted.
If the power switch is in the ON position the LED should flash once every 5
seconds to indicate that it is running. If the setup button is pressed, the LED
will briefly flash once a second to indicate that the camera is ready for setup
using the Device Configuration Utility.
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