Definição do conceito
[SPA] U-matic SP | U-matic SP : Formato de casete compatible con U-matic, pero con el vídeo perfeccionado por el uso de una cinta de óxido especial. | FUENTE : U-matic SP. In: Reglas de catalogación de IASA Trad. Maria del PIlar Gallego Cuadrado. Madrid: ANABAD, 2005. (Apéndice D. GLOSARIO) p. 252
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[ENG] U-matic SP | U-matic SP : A videotape cassette format compatible with U-matic, but with improved video using a special oxide tape. RTAV Draft Glossary, 19 July 1994 | SOURCE : U-matic SP. In: IASA Cataloguing Rules (Appendix D. Glossary) Available at : https://www.iasa-web.org/cataloguing-rules/appendix-d-glossary Accessed : 18 nov. 2022
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[ENG] U-matic SP | DEVELOPMENT : U-matic saw two revisions to improve its image quality. The first was high-band or Hi-band, introduced for PAL countries, with the original revision becoming known as low-band or Lo-band. This was followed by SP (superior performance), for NTSC and PAL countries. Both revisions increased the FM carrier frequencies, increasing the available bandwidth on the tape, hence increasing image quality and the number of lines. SP also introduced chrome dioxide tape. Hi-band U-matic recordings will play in black and white in Lo-band U-matic machines. | PAL U-matic hi-band increased the FM carrier frequency to 4.8-6.4 MHz, while U-matic SP increased it even further to 5.6-7.2 MHz, while increasing the color carrier frequency to 924 kHz. | U-matic tape moves at 3.75 inches per second, and has a tape writing speed of 8.54 meters per second for PAL or 10.26 for NTSC. This means that the heads on the drums of U-matic VCRs move across the tape at one of those speeds. The drum has two heads, both of which are used for recording video. The drum spins at 1500 rpm for PAL or 1800 rpm for NTSC. U-matic low-band when recording NTSC has a sync tip frequency of 3.8 MHz, a peak white frequency of 5.4 MHz, and a color carrier frequency of 688.373 kHz. NTSC U-matic SP has a peak white frequency of 7 MHz. | When recording PAL, U-matic Hi-band had a sync tip frequency of 4.8 MHz, a peak white frequency of 6.4 MHz, and a color carrier frequency of 983.803 kHz, while U-matic Hi-Band SP had a sync tip frequency of 5.6 MHz, and a peak white frequency of 7.2 MHz, retaining the color carrier frequency of regular Hi-band. | SOURCE : U-matic. in: Wikipedia. Available at : https://en.wikipedia.org/wiki/U-matic Accessed : 18 nov. 2022
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[ENG] U-matic SP | U-matic / U-matic SP | Synonyms: ¾" U-matic; ¾" SP (U-matic SP) | Dates: U-matic: 1971 – c. 2000; U-matic SP: 1986 – c. 2000 | Common Size(s): Tape width: ¾"; Cassette, small: 7¼" × 4?" × 1?" / cassette, large: 8?" × 5?" × 1?" | Description:U-matic is a magnetic tape-based analog video cassette format. The tape is composed of magnetic particles, a binder, and a polyester base. Full-size cassettes are 8?" × 5?" × 1?" and can record up to 60 minutes of content; small cassettes are 7¼" × 4?" × 1?" and can hold up to 20 minutes of content. U-matic SP cassettes are brown and maroon, and they generally have "SP" printed on the side. | Composition : Polyester magnetic tape enclosed in a plastic cassette | SOURCE : The Preservation Self-Assessment Program (PSAP) - University of Illinois at Urbana-Champaign. Available at : https://psap.library.illinois.edu/collection-id-guide/videotape#umatic Accessed : 23 nov. 2022
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[ENG] U-matic SP | U-matic SP (1986 – late 1990s) | U-matic SP (Superior Performance) was a variant of the U-matic video cassette format, and was introduced by Sony in 1986. It used chrome tape and offered an improvement in performance over previous generations of U-matic (low-band and high-band) with a a horizontal resolution of 330 lines, a better signal to noise ratio, and Dolby C noise reduction. | Like previous generations of U-matic, the SP variant was analogue and used ¾-inch tape. SP tapes can be played on a standard U-matic deck, albeit with a loss in quality. | Two sizes of U-matic SP tape were available, with the smaller one, U-matic S SP, aimed at the electronic news gathering market. | U-matic tape was replaced in broadcast applications by Sony’s own Betacam family of video cassette formats in the 1980s, and for other applications in the 1990s. | Dimensions: 21.9 cm × 13.7 cm × 3 cm | SOURCE : MUSEUM OF OBSOLETE MEDIA. Data Base. Available at : https://obsoletemedia.org/u-matic-sp/ Accessed : 24 nov. 2022
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