Actuality event Any event that is not specifically staged for television that exists in its own time scale.

A/D conversion Converting an analogue signal into a digital signal.

Ad-lib shooting Impromptu and unrehearsed camera coverage.

Alarm control Control of audible warning through speaker of camera/recorder of a fault condition in camera or VTR fault.

Aliasing Incorrect sampling due to input frequencies exceeding one half of the sampling rate.

Amplitude Maximum height of a waveform or signal.

Analogue signal A varying voltage signal.

Angle of view The horizontal angle of view of a specific focal length lens. Angle of view varies with a zoom lens.

ASA American Standards Association. A method of rating the speed of film. Replaced by ...

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