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Telephoto zoom

It is a lens that makes a subject appear larger on film than does a normal lens at the same camera-to-subject distance.  A telephoto lens has longer focal length and narrower field of view than normal lens, and has a shallower depth of field than wide angle lenses.  But it can do isolation of subject and have a longer reach without going near to the subject.  Life can be very difficult in sports and wildlife video capturing.  A zoom lens allows continuous shift of focal length without shifting the focus point.  Because it delivers various angles of view, one lens can serve as multiples of fixed focal length lenses.  A standard range telephoto zoom lens will be 15mm to 375mm (25x), an ultra telephoto zoom lens is within 30-750mm focal length (25x).  While a F1.5-F2.2 F-value 10-250mm focal length telephoto zoom lens is suitable to produce a clear picture of faint object under low light application.

Thin Film Transistor, TNT

TFT is a special kind of field-effect transistor made by depositing thin films of a semiconductor active layer as well as the dielectric layer and metallic contacts over a supporting substrate. A common substrate is glass, since the primary application of TFTs is in liquid crystal displays. This differs from the conventional transistor where the semiconductor material typically is the substrate, such as a silicon wafer.

TIA/EIA-568-B

Commercial Building Telecommunications Wiring Standard defines a generic telecommunications wiring system for commercial buildings that will support a multi-product, multi-vendor environment.  It also provides direction for the design of telecommunications products for commercial enterprises.

Time Synchronization  Protocol (TSP) Server

A computer can periodically synchronize the time on all computers within a network.  This ensures that the time used by network services and local functions remains accurate.

Transceiver

A device that can both transmit and receive signals.  On local area networks (LANs), a transceiver is the device that connects a computer to the network and that converts signals to and from parallel and serial form.

Transmission Control Protocol/Internet Protocol, TCP/IP

A set of networking protocols widely used on the Internet that provides communications across interconnected networks of computers with diverse hardware architectures and various operating systems. TCP/IP includes standards for how computers communicate and conventions for connecting networks and routing traffic.  TCP is used along with the Internet Protocol (IP) to transmit data as packets between computers over the network. While IP takes care of the actual packet delivery, TCP keeps track of the individual packets that the communication (e.g. requested a web page file) is divided into, and, when all packets have arrived at their destination, it reassembles them to re-form the complete file.

Transmitter

It is equipment that generates RF or electrical signals for transmission through the air or space or over a transmission line.  It also refers to the electronic package that converts electrical energy to light energy in a fiber optic system.

TV Lines

TV Lines are the standard measure of an analog TV's Resolution, a measure of Visual Resolution.  It measures Line Pairs, for analog TVs, the number of black and white (vertical) lines that can be seen on the screen at the same time is used to determine TV Lines.  If you wanted to compare the visual Resolution of film and a TV you will need to divide the number of TV Lines in half to find the number of Line Pairs.

Twisted Pair

It is two lengths of insulated conductors twisted together, traditional method for connecting home and many business computers to the telephone company.  Twisted pair gets its name because two insulated copper wires are twisted together, both of which are needed for each connection.  In commercial environments, performance of data transmission can be improved by adding a composite tape to the wire.  This is known as shielded twisted pair.  Since both wires have nearly equal exposure to any interference, the differential noise is slight.