| LCD |
Liquid Crystal Display. A type of flat screen display. |
| Leased Line |
A telephone line reserved for the exclusive use of leasing customers without interexchange switching arrangements. Should not be mistaken for private line that is owned by the user over private property. |
Lens Calculator
Software |
A computer program for specifying correct lenses. |
Lens Calculator
Wheel |
Used for calculating a lens size or distance from a camera to the subject. |
Line Amplifier
(Video line
corrector) |
A device to make good the loss of signal strength and quality due to long cable runs. |
| Line Fed Camera |
A camera that receives its power along the same cable that is used to send its picture back to the monitor. |
| Line Lock |
To synchronize the field sync pulses, of an AC powered camera, to the frequency of the voltage input (line voltage). |
| Linux |
A freeware, clone version of the UNIX‚ System V release 3.0 kernel that runs on PC x86 machines and other platforms. |
Local Area Network
(LAN) |
A data-communications system confined to a limited geographic area (up to about 10km) with moderate to high data rates (100 kbps to 100 Mbps). The area served may consist of a single building, a cluster of buildings or a campus-type arrangement. The network uses some type of switching technology and does not use common carrier circuits (although it may have gateways or bridges to other public or private networks). |
| Looping |
Video input of a piece of video equipment both unterminated and including the relevant sockets for the extra coaxial cables. |
| Luminance (Y) |
The part of a video signal that consists of the monochrome data. |
| Lux |
Metric measure of the light striking a surface. The light available from that surface will depend on how reflective it is. |
