文章详情

IEC 发布CISPR22第六版问题解释清单

日期:2024-04-30 02:45
浏览次数:1448
摘要:

IEC 发布CISPR22第六版问题解释清单


CISPR I分会2009年10月发布了CISPR 22第六版问题解释清单——SC CIS/I/Publication CISPR 22 (2008), Sixth edition/I-SH01。
内容如下:
1)平均值检波器的选择
 CISPR 22 1~6GHz的限值分为平均值限值和峰值限值。在1GHz以上,CISPR16-1-1中规定了两种平均值检波器,即线性平均值检波器和对数平均值检波器。针对CISPR22限值,正确的平均值检波器是符合CISPR16-1-1:2006  6.4.1 条及其**修正案(2006)和**修正案(2007)中规定的线性平均值检波器。
 
2)机柜或机架内包含多台设备时的传导发射测量
当EUT为包含多台设备的机柜或机架且这些设备通过一个交流电源接线板供电,且制造商申明该交流电源接线板为EUT的一个部分时,其交流电源传导发射的测量应在离开机柜或机架的交流电源接线板输入电缆上进行,无需对每台设备的交流电源分别进行。这和9.5.1中**段和子段落C)的要**一致的。

原文如下:
1. Selection of Average detector
CISPR 22 defines limits for radiated emissions at frequenciesbetween 1 GHz and 6 GHz with respect to both average and peakdetectors. CISPR 16-1-1 defines two types of Average detector foruse above 1 GHz. For the limits given in CISPR 22 the appropriateaverage detector is the linear average detector defined in 6.4.1 ofCISPR 16-1-1:2006 with its Amendments 1:2006 and 2:2007.
 
2. Measurement of conducted emissions on cabinets containingmultiple items of equipment Where the EUT is a cabinet or rack thatcontains multiple items of equipment that are powered from an ACpower distribution strip and where the AC power distribution stripis an integral part of the EUT as declared by the manufacturer, theAC power line conducted emissions should be measured on the inputcable of power distribution strip that leaves the cabinet or rack,not the power cables from the individual items of equipment. Thisis consistent with the requirements in 9.5.1 paragraph 1 and subparagraph c).