Glossary

As the camera zooms in to increase the size of objects on the monitor screen, the pan and tilt speeds are reduced so that the relative speed on the screen remains constant.

A feature records the sequence of movements of the camera’s PTZ for later playback allowing a set pattern to be repeated automatically.

As the camera tilts through the vertical position, the camera rotates to maintain the correct orientation of the image.

A techniques that boost video signal level to produce a full amplitude video signal, even if its scene contrast is less than full range (glare, fog, mist, etc).

The camera pans moves continuously between right and left with limit settings.

A camera with full integration, high speed, pan/tilt/zoom function built into a protective dome housing allowing full and continuous 360 degree coverage of the scene.

The lens iris opening is automatically adjusted to allow the correct illumination of the camera sensor.

Autofocus refers to a camera lens' ability to adjust its configuration in order to focus properly on a subject regardless of whether it is near or far from the camera. Autofocus lenses generally provide vastly superior image quality than do their fixed focus cousins since they do not have to rely on their depth of field.

Each unit has a numerical address in the control system in which it is located. This allows the appropriate unit to be operated.

A flexible and sophisticated alarm management subsystem that allows rules to be created which define that input(s) activate one or more output(s). In its most basic form, a rule could define which inputs should activate which outputs. In a more complex form, a rule can be programmed to take specific keyboard command (pre-existing or not) and perform a dome function, or any combination of the above.

NTSC/PAL analog video output. RCA, BNC, or terminal block outputs are provided in DirectIP cameras.

You can use this to adjust the camera angle and focus during the installation.

The ratio of the measurable bright and dark intensity or the ability to show how much of a wide range of signals: dark to light.
The higher it is, you can discern/resolve more details of similar.

SNR means the ratio of the amplitude of a analog or digital data signal to the amplitude of noise. Typically SNR is expressed in decibels (dB).

Corrects defective dead or hot pixel.

Corrects the lens shading and/or barrel distortion.