{"id":282070,"date":"2024-10-19T19:03:58","date_gmt":"2024-10-19T19:03:58","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-92962017\/"},"modified":"2024-10-25T15:45:30","modified_gmt":"2024-10-25T15:45:30","slug":"bs-iso-92962017","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-92962017\/","title":{"rendered":"BS ISO 9296:2017"},"content":{"rendered":"<p>This document is applicable to information technology and telecommunications equipment.<\/p>\n<p>It specifies:<\/p>\n<ol style=\"list-style-type:lower-alpha\">\n<li>\n<p>for a batch of equipment, the method for determining the following values:<\/p>\n<ul>\n<li>\n<p>the declared mean A-weighted sound power level, <i>L<sub>W<\/sub> <\/i><sub>A,m<\/sub>;<\/p>\n<\/li>\n<li>\n<p>the declared mean A-weighted emission sound pressure level, <i>L<sub>p<\/sub> <\/i><sub>A,m<\/sub>;<\/p>\n<\/li>\n<li>\n<p>the statistical adder for verification, <i>K<\/i><sub>v<\/sub>;<\/p>\n<\/li>\n<li>\n<p>the statistical upper limit A-weighted sound power level, <i>L<sub>W<\/sub> <\/i><sub>A,c<\/sub>;<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>how acoustical and product information is to be published electronically or in hard-copy format in technical documents or other product literature supplied to users by the manufacturer or declarer;<\/p>\n<\/li>\n<li>\n<p>the method for verifying the noise emission values that are declared by the manufacturer or declarer.<\/p>\n<\/li>\n<\/ol>\n<blockquote>\n<p>NOTE The terms \u201cmanufacturer\u201d and \u201cdeclarer\u201d are used in this document to represent any entity that provides product noise emission information. For instance, a product supplier or importer who does not manufacture the hardware, but offers noise emissions information, is also referred to a manufacturer or a declarer as applicable, in this document.<\/p>\n<\/blockquote>\n<p>The uniform methods in this document use the noise emission data obtained in accordance with ISO&nbsp;7779, and the declaration and verification procedures detailed in ISO&nbsp;4871<sup>[<\/sup><sup>4<\/sup><sup>]<\/sup> and ISO&nbsp;7574\u20114.<sup>[<\/sup><sup>6<\/sup><sup>]<\/sup><\/p>\n<p>The basic noise emission values to be declared are the declared mean A-weighted sound power levels, <i>L<sub>W<\/sub> <\/i><sub>A,m<\/sub>. Optionally, the declared mean A-weighted emission sound pressure levels at the operator or bystander positions, <i>L<sub>p<\/sub> <\/i><sub>A,m<\/sub>, can be declared. These are arithmetic mean values based upon measurements on a random sample of equipment of the batch, in accordance with ISO&nbsp;7779.<\/p>\n<p>For verification purposes, an additional quantity is required to be declared: the statistical adder for verification, <i>K<\/i><sub>v<\/sub>. This is a quantity that is added to the declared mean A-weighted sound power level, <i>L<sub>W<\/sub> <\/i><sub>A,m<\/sub>, and used in the verification section of this document to provide a consistent and predictable probability of acceptance for the batch of equipment.<\/p>\n<p>The declared mean A-weighted sound power level for the batch of equipment permits comparison of noise emissions between different products and permits predictions of installation or work-place noise immission levels, as described in ECMA&nbsp;TR\/27.<sup>[<\/sup><sup>9<\/sup><sup>]<\/sup><\/p>\n<p>Although the most useful quantity for calculating immission levels due to one or more noise sources is the A-weighted sound power level of the individual source(s), the A-weighted emission sound pressure level may also be useful in estimating the immission level in the immediate vicinity of an isolated piece of equipment.<\/p>\n<p>To avoid confusion between sound power levels and emission sound pressure levels, the declared mean A-weighted sound power level, <i>L<sub>W<\/sub> <\/i><sub>A,m<\/sub>, is expressed in bels (B) and the declared mean A-weighted emission sound pressure level, <i>L<sub>p<\/sub> <\/i><sub>A,m<\/sub>, is expressed in decibels (dB).<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Acoustics. Declared noise emission values of information technology and telecommunications equipment<\/b><\/p>\n<table class=\"shortdes-table\" style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/bsi\/\"><b>BSI<\/b><\/a><\/td>\n<td>2017<\/td>\n<td>24<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":282077,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-282070","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/282070","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\/282077"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=282070"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=282070"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=282070"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}