This part of ISO\/IEC 8441 specifies requirements for<\/p>\n
unrecorded magnetic tape designed for high density<\/p>\n
digital recording (HDDR) having the following<\/p>\n
characteristics:<\/p>\n
a) nominal thickness 25,4 urn (0,001 in);<\/p>\n
b) longitudinal magnetic orientation;<\/p>\n
c) coercivity 72 kA\/m (900 Oe) max.<\/p>\n
These tapes are suitable for interchange in accordance<\/p>\n
with ISO\/IEC 8441-2.<\/p>\n
Requirements for packaging are also included.<\/p>\n
NOTE 1 Tapes of coercivity above 32 kA\/m (400 Oe) are<\/p>\n
usually classified as high energy tapes and users should<\/p>\n
establish compatibility with equipment used for driving<\/p>\n
them.<\/p>\n
Annex A gives guidance on glass and metal-flanged<\/p>\n
reels. Annex B gives information on the wear of recording<\/p>\n
heads. Different categories of environmental<\/p>\n
conditions and their effects on tape are dealt with in<\/p>\n
annex C. Severe operating conditions are considered<\/p>\n
in annex D. Surface electrical resistance<\/p>\n
testing is dealt with in annex E. A tape abrasivity<\/p>\n
testing technique is described in annex F. A list of<\/p>\n
bibliographical references is given in annex G.<\/p>\n
NOTES<\/p>\n
2 It is recognized that archival interchange tapes, or<\/p>\n
those produced by systems in use prior to the publication<\/p>\n
of this part of ISO\/lEC 8441, may not comply with the requirements<\/p>\n
and\/or recommendations herein.<\/p>\n
3 Various tests and procedures herein refer to recording<\/p>\n
with a.c. HF bias. In practice, certain HDDR systems do<\/p>\n
not use bias. The use of bias in this part of ISO\/IEC 8441<\/p>\n
does not imply that the tape so tested is in any way unsuitable<\/p>\n
for a biasless system.<\/p>\n","protected":false},"excerpt":{"rendered":"
Information technology \u2014 High density digital recording (HDDR) \u2014 Part 1: Unrecorded magnetic tape for (HDDR) applications<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n ISO<\/b><\/a><\/td>\n 1991-05<\/td>\n 35<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":636047,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[687,2634],"product_tag":[],"class_list":{"0":"post-636037","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-35-220-22","7":"product_cat-iso","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/636037","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/636047"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=636037"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=636037"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=636037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}