Quadruplex videotape

Quadruplex, also two-inch quadruplex or two-inch Quad, the first video recorder system was worldwide.

It was developed in 1956 by Ampex.

Quadruplex used a magnetic tape with two inches ( 5.08 cm) in width, which is described by today's standards as very thin. An image was divided every 15 to 16 lines in trace amounts. The belt speed is 15 inches ( 38.1 cm) per second.

The video bandwidth of this format is so high that it could be used with only minor changes for the later introduced color video recording.

When equipped modern institutions such as the ZDF quadruplex ( colloquially called two inches ) was taken in the 1980s from the transmit mode. The main reason for this was the relatively labor-intensive operation of the plants. However, individual machine were to Usable keeping of archives ( "Special Equipment "), reserve until after the turn of the millennium.

The format is still in use in some television studios. As Afghan television began its broadcasts again, some of these machines in the regular program operation were there.

Superseded it was in television production and broadcasting operations by 1 inch (2.54 cm) wide magnetic tape working on open reel 1 -inch -B and 1-inch C- technique, but also by the professional video cassette formats such as U -Matic, Betacam SP and Digital Betacam. By now, most stations rely on file-based production company and thus on IT tapes such as LTO.

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