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Enterprise Control System

Glossary

Please take time to view our Glossary of Terms and Abbreviations - we hope you will find the information useful.

 
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C/N - CNR

Carrier to Noise Ratio. In decibels (dB), is specified as the ratio between the power in the carrier of the desired signal and the total received noise power


CCS

Command Centre Site


CCU

Communications Control Unit


CF

Crest Factor (peak to average power ratio of the RF envelope)


Channel Coding Information

Referring to the FEC, code and bit interleaving, the code is used to protect data sent even in the presence of noise.


Check

Compare against a specified standard


Chrominance

Video signal carrying colour image information


Codec

A device that transforms analog input into a digitally coded output and transforms digital signals to analog output


COFDM

Coded Orthogonal Frequency Division Multiplexing - is a digital multi-carrier modulation scheme which uses a large number of closely spaced orthogonal sub carriers. Each sub carrier is modulated with a conventional modulation scheme at a low symbol rate, maintaining data rates similar to conventional single carrier modulation schemes in the same bandwidth.


Composite

Composite video is the format of an analog television (picture only) signal before it is combined with a sound signal and modulated onto an RF carrier. In contrast to component video it contains all required video information including colours in a single line-level signal.


CTS

Clear to Send - A control signal to the PC. The remote host is ready to receive your input. The host (remote DTE) may drop this from time to time as it becomes busy.


CVBS

Composite Video Blanking Sync