CMN-91
Appendix C
Installation and Operation Manual
Glossary
© 2016 Imagine Communications Corp. Proprietary and Confidential.
Revision D | Page 191
Synchronous Detection A common detection technique used in television demodulators that removes
quadrature distortion, enabling comparison of transmitter output with video input signal.
S-Video Also Y/C. Transmits luminance and color portions separately via multiple wires, thus avoiding
the color encoding process and resulting loss of picture quality.
TAI International Atomic Time (TAI, from the French name Temps Atomique International) is a high-
precision atomic coordinate time standard based on the notional passage of proper time on Earth's
geoid. TAI was synchronized with Universal Time at the beginning of 1958. It is a Non leap second
compensated "continuous" time.
Tally A system used to light lamps and indicate usage. Most production switchers have an internal tally
system to indicate selected functions, and which selected functions are currently involved with Program.
TCP Transmission Control Protocol
Telecine A device used to convert film to video; movie film is digitally sampled and converted to video
frame by frame in real-time.
TCXO Temperature Compensated Crystal Oscillator
THD Total Harmonic Distortion
TPL True Peak Level
TRAIM. Timing receiver autonomous integrity monitoring (GPS related term).
Transport Stream-ATSC (TS) Consists of the following: (1) Packets: 188 bytes - fixed length with
descriptive data, (2) Carries several programs, (3) has a PID which identifies the type of TS packet (video,
audio, other), and (4) carries descriptive information about the program.
True Peak Level The maximum value of an audio signal waveform in the continuous time domain.
TSG Test Signal Generator
TS Transport Stream
UDP User Datagram Protocol. A best-effort delivery of discrete datagrams that does not rely on a client-
server connection.
UHF Ultra High Frequency
Unity Gain An electronic term indicating that a signal will be neither amplified or attenuated. One volt of
signal level in results in one volt of signal level out.
UTC Coordinated Universal Time is a time standard based on International Atomic Time (TAI) with leap
seconds added at irregular intervals to compensate for the Earth's slowing rotation.[2] Leap seconds are
used to allow UTC to closely track UT1, which is mean solar time at the Royal Observatory, Greenwich.
Vector A measure that has two individual properties: magnitude and direction.
Vector Clip A special encoded clip version that limits only the Cb and Cr input video signals and does not
affect (nor is it affected by) the luminance component. This color-only clip limits the maximum vector
