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LAN

Stands for Local Area Network - a group of computers and associated devices that share a common communications line.

LED
Light Emitting Diode.

Lens
A transparent optical component consisting of one or more pieces of optical glass with surfaces so curved (usually Spherical), that they serve to converge or diverge the transmitted rays of an object, thus forming a real or virtual image of that object.

Lens Mount
This is the area where a lens is mounted. There are two types; C- or CS-Mount.

Lens Speed
Refers to an optical speed, and is expressed by f-number. Smaller f-number means faster lens.

Line Amplifier
An amplifier for audio or video signals that feeds a transmission line; also called program amplifier.

Linux
It is a very efficient and fast-performing computer operating system used by many high quality standalone / network DVR video recorders.

Looping
Term used when a high impedance device is connected in parallel to a video source.

LL
Line Lock mode LUX Lumens per Square Meter; unit of illumination amount.

Lux
International System (Sl) unit of illumination in which the meter is the unit of length. One lux equals one lumen per square meter.



 
 
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