T Channels: A series of standardized data channels, originally devised to carry digital voice. Includes the T1 and T3 channels.
T1 Channels: In North America, a digital transmission channel carrying data at a rate of 1.544 million bits per second. In Europe, a digital transmission channel carrying data at a rate of 2.048 million bits per second. AT&T term for a digital carrier facility used to transmit a DS-1 formatted digital signal at 1.544 Mbps.
T3: Channels In North America, a digital channel which communicates at 45.304 Mbps. commonly referred to by its service designation of DS-3.
TBC Time Base Corrector: A device used to stabilize a VTR's unstable image. Includes controls for adjusting the brightness, black level, color hue, and color saturation of the video playback.
TCM: Time compression multiplexing: A technique for video storage in which chrominance information is compressed and time multiplexed with the uncompressed luminance signal.
TCP/IP: Transmission Control Protocol I Internet Protocol. A set of protocols for Layer 3 and 4 of the OSI model that has become a near defacto communications standard.
TDM: Time Division Multiplex: A time-sharing of a transmission channel by assigning each user a dedicated segment of each transmission cycle.
TDMA: Time division multiple access: Uses TDM to allow multiple signal originators to contend for access to use the transmission media
Tearing: A picture condition in which groups of horizontal lines (generally at the top of the picture) are displayed in an irregular manner. Caused by lack of horizontal synchronization.
Terabyte: Billion bytes or 8 billion bits.
Time-stamp: A term that indicates the time of an event.
Tokuren: Product that sold by the Sony sales organization that is not supported by parts, publications, or service. ATR replacement is the only repair alternative.
Tonal Component: A sinusoid-like component of an audio signal.
Transceiver: A terminal that can both transmit and receive data.
Transponder: The electronics of a satellite that receives an uplinked signal from the earth, amplifies it, converts it to a different frequency, and returns it to the earth.
Transport Packet: A data structure used to convey information about the Transport Stream payload. Header
Tree and Branch: Cable system with a network topology in which coaxial cable is tapped (or split) to serve multiple subscribers.
TVRO: Television receiver only, consisting of an antenna, a pre-amplifier, and a satellite receiver. Also refers to the C-band backyard earth station user base.
Twisted Pair: An electrical conductor that consists of two thin copper wires twisted around each other. Used by telephone companies for most subscriber loop installations.
Two-way Cable: A cable TV system with the capacity to conduct signals to the headend as well as System away from it. Two-way or bi-directional systems carry data and full audio and video television signals in either direction.