Extron A/V Glossary (Needed to Pass)

A/D correct answers Analog to Digital (converter). A device that converts an analog signal to a digital value. AACS correct answers Advanced Access Content System - A digital rights management standard utilized with Blu-ray Disc and other optical formats. AACS incorporates two parts: a set of embedded decryption keys within the source device, and a set of keys encoded in the content that describes each of the playback devices licensed to utilize the content. This approach allows copyright holders to revoke the keys of a particular source device, thus preventing it from playing back future content. AACS also provides for a managed copy system, that is, a mechanism by which one or several, but not an unlimited number of copies can be legally made as backups, for storage on a media server, or for use on a portable device. The ICT - Image Constraint Token is a provision within AACS that allows the content provider to limit analog output resolutions. AAP correct answers Architectural Adapter Plate. Mountable metal plates available in hundreds of models offering popular pass-through audio, video, phone, data, power, and control connectors. Active AAPs are also available for power, control, and long distance signal transmission. Along with mounting options for maximum flexibility in placing connectors and controls within reach, these interchangeable components fit together to create an attractive and completely customizable A/V connectivity solution. Absorption correct answers The attenuation of light as it passes through fiber, similar to the resistive loss of an electrical signal as it passes through cable. Absorption is caused by impurities and defects in the fiber. AC correct answers Alternating Current. Electron flow that changes direction alternately. AC coupled correct answers A circuit design that does not pass the DC component of a signal, therefore it ignores DC offsets. AC-3 correct answers See "Dolby® Digital." Acceptance Angle correct answers In fiber optics, this is the maximum allowable angle of incidence for light entering a fiber measured from the center axis of the fiber. Incoming light must be directed below this angle in order to enter the core of the fiber and propagate along its length through total internal reflection. Active crossover correct answers A circuit that separates the audio signal into the appropriate frequency bands for the woofer, midrange, and tweeter. An active crossover is placed in the signal path ahead of the amplifier, where a passive crossover is placed between the amplifier and the speaker. ADC correct answers Analog to Digital Converter. A device that converts analog signals to digital signals.