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dc.contributor.authorPrice, R. L.
dc.contributor.authorYoungquist, R. J.
dc.date.accessioned2016-04-25T17:16:07Zen
dc.date.available2016-04-25T17:16:07Zen
dc.date.issued1971-09en
dc.identifier.issn0884-5123en
dc.identifier.issn0074-9079en
dc.identifier.urihttp://hdl.handle.net/10150/607057en
dc.descriptionInternational Telemetering Conference Proceedings / September 27-29, 1971 / Washington Hilton Hotel, Washington, D.C.en_US
dc.description.abstractThis paper describes the results obtained with several new techniques which are being used to extend the frequency bandwidth limits and the signal to noise ratios of instrumentation magnetic tape record/ reproduce systems. During the past decade, wideband magnetic tape information recording densities have advanced in several stages to the currently used 60 to 80 micro inch wavelengths. The new techniques described in this paper now make it practical to record and reproduce wavelengths in the order of 30 to 40 micro inches. This results in a frequency bandwidth of 1.0 MHz at a tape speed of 30 inches per second. In comparison with present wideband systems this means an improvement of 2X in bandwidth, or a reduction of tape speed by one half is now possible while maintaining approximately 20 dB broadband signal to noise ratio with a track width of .025 inches. This width provides 28 tracks per inch of tape width. This improved performance has been obtained by combining recent improvements in "High Energy" tape, narrow gap ferrite record heads and ferrite reproduce heads. Using a systems approach, electronic signal processing circuits have been developed which coordinate these improvements in tape and heads, resulting in optimized "high performance" record/ reproduce systems.
dc.description.sponsorshipInternational Foundation for Telemeteringen
dc.language.isoen_USen
dc.publisherInternational Foundation for Telemeteringen
dc.relation.urlhttp://www.telemetry.org/en
dc.rightsCopyright © International Foundation for Telemeteringen
dc.titleHalf Speed Recording with Ferrite Heads and High Energy Tapeen_US
dc.typetexten
dc.typeProceedingsen
dc.contributor.departmentMinnesota Mining and Manufacturing Co.en
dc.identifier.journalInternational Telemetering Conference Proceedingsen
dc.description.collectioninformationProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.en
refterms.dateFOA2018-06-18T17:49:28Z
html.description.abstractThis paper describes the results obtained with several new techniques which are being used to extend the frequency bandwidth limits and the signal to noise ratios of instrumentation magnetic tape record/ reproduce systems. During the past decade, wideband magnetic tape information recording densities have advanced in several stages to the currently used 60 to 80 micro inch wavelengths. The new techniques described in this paper now make it practical to record and reproduce wavelengths in the order of 30 to 40 micro inches. This results in a frequency bandwidth of 1.0 MHz at a tape speed of 30 inches per second. In comparison with present wideband systems this means an improvement of 2X in bandwidth, or a reduction of tape speed by one half is now possible while maintaining approximately 20 dB broadband signal to noise ratio with a track width of .025 inches. This width provides 28 tracks per inch of tape width. This improved performance has been obtained by combining recent improvements in "High Energy" tape, narrow gap ferrite record heads and ferrite reproduce heads. Using a systems approach, electronic signal processing circuits have been developed which coordinate these improvements in tape and heads, resulting in optimized "high performance" record/ reproduce systems.


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