|Document ID (ISN)||58367|
|Convention or series no.
||Feierfeil P.J., Schaffert E.
Bundesanstalt für Arbeitsschutz
||Noise emissions by office and information processing equipment - Personal computers (networks) and printers
||Geräuschemission von Geräten der Büro- und Informationstechnik - Arbeitsplatzcomputer (Mehrplatzsysteme) und zugehörige Druckeinrichtungen [in German]|
||Wirtschaftsverlag NW, Postfach 10 11 10, Am Alten Hafen 113-115, D-W-2850 Bremerhaven 1, Germany, 1990. 63p. Illus. 6 ref. Price: DEM 14.00.
||This report describes the results of investigations into the determination of the noise levels of computer and business equipment; computers (multi-user systems) and related printing devices. Noise emission levels were determined for 9 different computers from 6 manufacturers and 13 printing devices under standard conditions. The results, especially in relation to the mode of operation and design details of a keying robot, were incorporated in the national standard DIN 45 635 Part 19 and into a European manufacturers' agreement (ECMA standard 74). The investigations revealed that the main noise sources in computers are the mechanical components, such as the streamer and diskette drives, and the fans of the central processing units. On average, noise level of printer and PC in an office are estimated at 56dB(A) compared to 65dB(A) in the case of a typewriter. Noise emission reductions of up to 10dB are achievable by improving the thermal design of the computers and selecting slow-running fans. Summaries in English, French, German.
||noise level; offices; exposure evaluation; computers; office equipment; computer terminals
||noise level measurement; report
||E - Books, reports, proceedings
|Country / State or Province||Germany|
||Noise, hearing and vibration
|Broad subject area(s)
Visual display terminals (VDTs)