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8 • Programming Menus XX134-44-02 Rev 710 SurveyorVFT Camera Dome Programming

Camera Controller

The next menu, Camera Controller, takes advantage of the Digital Signal

Processor (DSP) in the camera to adjust functions traditionally relegated to screw

terminals or DIP switches.

The SurveyorVFT uses fully- and semi-automatic iris control. When autoiris is on,

the Close Iris and Open Iris buttons on a keyboard select the optimum video level

the operator wishes the camera to maintain. This is called the Average Iris Level

and adjusts the iris based on the average intensity of the entire picture. When

autoiris is turned off on the keyboard, the Close Iris and Open Iris buttons directly

regulate the lens aperture.

Selecting the Iris Levels menu displays a sub-menu allowing the user to choose

settings for Average Iris Level, Peak Iris Level or Keypad Autoiris Adjust (autoiris

is the default setting). Average Iris Level is described above and performs the

same setting that the Iris Open and Iris Close buttons do when the dome is in

autoiris mode. Peak Iris Level allows the autoiris to regulate the iris opening

based on the video level (or intensity) of the brightest objects in the picture. The

settings may be combined to optimize each camera’s ability to react to its

location. The Keypad Autoiris Adjust feature prevents an operator from adjusting

the Autoiris level from the keypad, when disabled, which is the default setting.

Note: The SurveyorVFT allows the iris to be switched between auto and manual

in simplex. A temporary message (2 seconds) displays indicating auto or

manual iris whenever the iris mode is switched.

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