Cisco 4116 - EtherFast Switch Design Manual page 67

Cisco video surveillance hybrid design guide
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PTZ (Pan-tilt-zoom)
R
Resolution
S
Security Operations Center
(SOC)
U
UTP
Z
Zoom (Digital)
Zoom (Optical)
Zoom Lens
Zoom Ratio
Describes the capability to change a camera's field of view through three planes of
reference. Panning refers to physically sweeping a camera from side-to-side (xy-plane)
whereas tilting is the ability to move it up-and-down (azimuth). Zooming changes a
camera's lens magnification giving the visual effect that the point-of-focus is closer or
further away.
A measure of the ability of a camera, encoder or video system to reproduce detail. In
analog systems, resolution usually refers to the number of lines that make up an image.
Whereas with digital systems, resolution gives a measure of the number of pixels used
to generate the image.
The command center where security personnel monitor and respond to security and
safety related incidents.
Unshielded twisted pair. A cable medium with one or more pairs of twisted insulated
copper conductors bound in a single
The process of magnifying a video image by using computational algorithms on the
digital signal.
The process of magnifying a video image by changing a lens' focal length.
A lens that may be effectively used as a standard or telephoto lens by varying its focal
length.
The ratio of the starting focal length (wide position) to the ending focal length (telephoto
position) of a zoom lens. A lens with a 10X zoom ratio will magnify the image at the
wide-angle end by 10 times.
Design Guide
C07-441963-00 11/07
VII
Page-VII

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