https://peertube.dngr.us/videos/watch/ce55fde2-dd82-4b53-84eb-9cf87bd1e56a Join this channel to get access to perks: https://www.youtube.com/channel/UCddem5RlB3bQe99wyY49g0g/join Help us preserve, scan and post more rare and endangered films! Join us on Patreon. Visit https://www.patreon.com/PeriscopeFilm Visit our website www.PeriscopeFilm.com This film from the 1970s promotes IBM's 2420 Magnetic Tape Unit. (It begins with a short leader with instructions on how to adjust projector sound and focus.) The film then introduces IBM's new engineering and manufacturing facility in Boulder, Colorado, and the IBM 2420 Magnetic Tape unit. The 2420 is compared to the IBM 2400 series Model 6, highlighting its increased tape speed, faster access time, and superior rewind characteristics, which improve system throughput. The development of the IBM 2420 aimed to achieve improved reliability and performance while remaining compatible with the 2400 line. The film details the IBM 2420's characteristics, including tape speed, recording density, data rate, access time, and automatic threading. It explains the automatic threading and cartridge loading features, the steps of the threading operation, and the development of a wraparound type cartridge for leaderless tape. The IBM 2420's simplified automatic threading uses straight-line loading and air bearings, increasing reliability with a single capstan motor and decoupling columns for faster access time. The text compares the start characteristics of the IBM 2420 and the IBM 2400 model 6, and describes the IBM 2420's faster in-column rewind speed. The use of solid logic technology, reduced mechanisms and components, and increased design simplicity enhance performance and reliability. The film concludes with a summary of the IBM 2420's features. 00:00 - 0:11: Introduction with music. 0:11 - 0:27: Instructions to adjust sound and focus, ensuring synchronization of beep and flash. 0:27 - 0:52: Introduction of IBM's new engineering and manufacturing facility in Boulder, Colorado, and the IBM 2420 Magnetic Tape unit. 0:52 - 1:35: Comparison of loading times between the IBM 2400 series model 6 and the IBM 2420. 1:35 - 2:01: The IBM 2420 provides increased tape speed, faster access time, and superior rewind characteristics, improving system throughput. 2:01 - 2:31: Development of the IBM 2420 to achieve improved reliability and performance while staying compatible with the 2400 line. 2:31 - 3:18: Characteristics of the IBM 2420, including tape speed, recording density, data rate, access time, and automatic threading. 3:18 - 4:01: Detailed explanation of automatic threading and cartridge loading features. 4:01 - 5:09: Steps of the automatic threading operation and the development of a wraparound type cartridge for leaderless tape. 5:09 - 6:01: Simplified automatic threading using straight-line loading and air bearings. 6:01 - 7:01: Increased reliability from the single capstan motor and decoupling columns, achieving faster access time. 7:01 - 7:35: Comparison of start characteristics between the IBM 2420 and the IBM 2400 model 6. 7:35 - 8:00: Rewind characteristics, with the IBM 2420 offering faster in-column rewind speed. 8:00 - 9:13: Use of solid logic technology, reduced mechanisms and components, and increased design simplicity for improved performance and reliability. 9:13 - 10:05: Summary of the IBM 2420's features, including increased tape speed, faster access time, superior rewind characteristics, automatic threading, cartridge loading, simplified construction, and improved reliability. 10:05 - End. Motion picture films don't last forever; many have already been lost or destroyed. For almost two decades, we've worked to collect, scan and preserve the world as it was captured on 35mm, 16mm and 8mm movies -- including home movies, industrial films, and other non-fiction. If you have endangered films you'd like to have scanned, or wish to donate celluloid to Periscope Film so that we can share them with the world, we'd love to hear from you. Contact us via the weblink below. This film is part of the Periscope Film LLC archive, one of the largest historic military, transportation, and aviation stock footage collections in the USA. Entirely film backed, this material is available for licensing in 24p HD, 2k and 4k. For more information visit http://www.PeriscopeFilm.com Source: https://www.youtube.com/watch?v=nS1CosrZR5Y Mirrored from Periscope Film (https://www.youtube.com/@PeriscopeFilm) Fri, 26 Jun 2026 20:18:16 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.dngr.us https://peertube.dngr.us/lazy-static/avatars/41a6fee9-7f57-42d0-a5fc-5db4f1af2e31.png https://peertube.dngr.us/videos/watch/ce55fde2-dd82-4b53-84eb-9cf87bd1e56a All rights reserved, unless otherwise specified in the terms specified at https://peertube.dngr.us/about and potential licenses granted by each content's rightholder.