CISPR 22 INT 1-2009 Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement《信息技术设备 无线电干扰特性 限值和测量方法》.pdf

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1、October 2009 ICS 33.100.10 SC CIS/I/Publication CISPR 22 (2008), Sixth edition/I-SH 01 INFORMATION TECHNOLOGY EQUIPMENT RADIO DISTURBANCE CHARACTERISTICS LIMITS AND METHODS OF MEASUREMENT INTERPRETATION SHEET 1 This interpretation sheet has been prepared by CISPR subcommittee I: Electromagnetic comp

2、atibility of information technology equipment, multimedia equipment and receivers, of IEC technical committee CISPR: International special committee on radio interference. The text of this interpretation sheet is based on the following documents: ISH Report on voting CISPR/I/299/ISH CISPR/I/312/RVD

3、Full information on the voting for the approval of this interpretation sheet can be found in the report on voting indicated in the above table. _ Introduction: At the CISPR SC I plenary, held on the 27thOctober 2007, a decision was taken to set the maintenance date for CISPR 22, Edition 6 to 2012. A

4、s a result the work identified within CISPR/I/279/MCR will not be started for the time being. At the subsequent meeting of CISPR SC I WG3 it was decided that certain items within the MCR would benefit now from further clarification and an interpretation sheet would be helpful to users of the standar

5、d, with the intent of including this information in a future amendment to the standard. This information does not change the standard; it serves only to clarify the points noted. CISPR SC I WG3 hopes that these clarifications will be of use to users and especially laboratories testing to CISPR 22, E

6、dition 6.0. The document is based on the comments received on CISPR/I/290/DC. Interpretation: 1. Selection of Average detector CISPR 22 defines limits for radiated emissions at frequencies between 1 GHz and 6 GHz with respect to both average and peak detectors. CISPR 16-1-1 defines two types of Aver

7、age detector for use above 1 GHz. For the limits given in CISPR 22 the appropriate average detector is the linear average detector defined in 6.4.1 of CISPR 16-1-1:2006 with its Amendments 1:2006 and 2:2007. October 2009 ICS 33.100.10 2. Measurement of conducted emissions on cabinets containing mult

8、iple items of equipment Where the EUT is a cabinet or rack that contains multiple items of equipment that are powered from an AC power distribution strip and where the AC power distribution strip is an integral part of the EUT as declared by the manufacturer, the AC power line conducted emissions sh

9、ould be measured on the input cable of power distribution strip that leaves the cabinet or rack, not the power cables from the individual items of equipment. This is consistent with the requirements in 9.5.1 paragraph 1 and sub paragraph c). _ Octobre 2009 ICS 33.100.10 SC CIS/I/Publication CISPR 22

10、 (2008), Sixime dition/I-SH 01 APPAREILS DE TRAITEMENT DE LINFORMATION CARACTRISTIQUES DES PERTURBATIONS RADIOLECTRIQUES LIMITES ET MTHODES DE MESURE FEUILLE DINTERPRTATION 1 Cette feuille dinterprtation a t tablie par le sous-comit I du CISPR: Compatibilit lectromagntique des matriels de traitement

11、 de linformation, multimdia et rcepteurs, du comit dtudes CISPR de la CEI: Comit international spcial des perturbations radiolectriques. Le texte de cette feuille dinterprtation est issu des documents suivants: ISH Rapport de voteCISPR/I/299/ISH CISPR/I/312/RVD Le rapport de vote indiqu dans le tabl

12、eau ci-dessus donne toute information sur le vote ayant abouti lapprobation de cette feuille dinterprtation. _ Introduction: Lors de la runion plnire du SC I du CISPR, qui sest tenue le 27 Octobre 2007, il a t dcid de fixer la date de maintenance de la CISPR 22, Edition 6 lanne 2012. En consquence,

13、les travaux identifis dans le document CISPR/I/279/MCR ne seront pas commencs dans limmdiat. Lors de la runion du GT3 du SC I du CISPR qui a suivi, il a t dcid que certains points du MCR bnficieraient prsent de clarifications complmentaires et quune feuille dinterprtation serait utile aux utilisateu

14、rs de la norme, avec pour but dinclure ces informations dans un futur amendement la norme. Ces informations ne modifient pas la norme; elles servent uniquement clarifier les points nots. Le GT3 du SC I du CISPR espre que ces claircissements seront utiles aux utilisateurs et en particulier aux labora

15、toires effectuant des essais selon la CISPR 22, dition 6.0. Le document est fond sur les commentaires reus sur le document CISPR/I/290/DC. Interprtation: 1. Choix du dtecteur de valeur moyenne La CISPR 22 dfinit les limites des missions rayonnes aux frquences comprises entre 1 GHz et 6 GHz en foncti

16、on des dtecteurs de valeur moyenne et de crte. La CISPR 16-1-1 dfinit deux types de dtecteur de valeur moyenne pour une utilisation au-del de 1 GHz. Concernant les limites fournies dans la CISPR 22, le dtecteur appropri de valeur moyenne est le dtecteur de valeur moyenne linaire dfini en 6.4.1 de la

17、 CISPR 16-1-1:2006 avec ses Amendements 1:2006 et 2:2007. Octobre 2009 ICS 33.100.10 2. Mesure des missions conduites sur des baies contenant plusieurs lments de matriel Si lappareil en essai est une baie ou un bti contenant plusieurs quipements qui sont aliments par une barre de distribution de lal

18、imentation en courant alternatif et si la barre de distribution de lalimentation en courant alternatif est une partie intgrante de lappareil en essai tel quindiqu par le fabricant, il convient de mesurer les missions conduites des lignes dnergie courant alternatif sur le cble dentre de la barre de distribution de lalimentation qui sort de la baie ou du bti, et non pas les cbles de puissance des lments individuels du matriel. Ceci est cohrent avec les exigences de 9.5.1 alina 1 et sous alina c). _

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