Cingular IV Appendix C - Power Supply Considerations and Power Switch Settings

Appendix C - Power Supply Considerations and Power Switch Settings

The camera can be powered externally with an AC adapter or internally via 5 AA batteries.

Internal batteries

Remove the four machine screws holding the bottom plate to access this area. When internal batteries are used, the switch on the battery tray must be in the upward (towards the red dot) position. Make sure the batteries are installed with the correct polarity, the flat end of the battery (negative) faces the spring within the holder.

The duration of operation obtained from a single set of batteries depends on several factors; the operating mode selected, the image size and compression level, the type of battery, the temperature, and the rate of image delivery. The following table depicts typical performance for different battery types when the camera is configured to deliver 1 image every 15 minutes. The images are Large size with Medium compression setting, and the camera is operating in the Auto mode at room temperature.

Battery Type Images Delivered

Alkaline350

Rechargeable 325

NiMH

Lithium650

External power

An AC adapter is available which will supply power to the external connector. When the external power connections are used, the internal power selector switch must be set properly (away from the red dot), and no batteries need be installed. The external power requirements are listed in the Appendix B.

Power mode selection

Two power modes are available when operating the camera. The power switch on the back panel selects these modes. The ON mode keeps the camera constantly powered. The AUTO mode allows the camera to turn on only in response to a scheduled time or to a signal on the external trigger. The only operational difference between the two modes is that in the ON mode the camera can receive and respond to text messages from a cell phone. Since the camera is off most of the time in the AUTO mode, this capability is not available. However, the AUTO mode is useful for minimizing power usage, an important feature for remote operation.

Generally, the availability of external electric power at the remote location will determine the power mode, ON or AUTO, in which the camera will be operated. The camera operation and required settings associated with the two modes is summarized in the following table

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