标题: EN 55014-1:2006+A1+A2标注解读 6 [打印本页] 作者: stone0371 时间: 2012-8-18 14:30 标题: EN 55014-1:2006+A1+A2标注解读 6 8 Interpretation of CISPR radio disturbance limit
CISPR射频骚扰限值的说明。
第八章主要是从统计学的角度，对EUT测试选取的条件说明。
这章内容对批量质量监督和验货的人来说很重要。作者: stone0371 时间: 2012-8-18 14:35
8.1 Significance of a CISPR limit
CISPR限值的意义
8.1.1 A CISPR limit is a limit which is recommended to national authorities for incorporation in national standards, relevant legal regulations and official specifications. It is also recommended that international organizations use these limits.
CISPR限值是一种推荐给国家权力机构引入国家标准、相关法律法规和官方规范的限值。它也推荐国际组织使用这些限值。作者: stone0371 时间: 2012-8-18 14:37
8.1.2 The significance of the limits for type approved appliances shall be that on a statistical basis at least 80 % of the mass-produced appliances comply with the limits with at least 80 % confidence.
对型式认可的器具，限值的意义是在统计基础上置信度至少为80%的情况下该批产品至少有80%符合限值。
In the case of discontinuous disturbance when the shortened procedure described in 8.2.2.3 is applied, compliance with the limits on the 80 % – 80 % basis is not guaranteed.
断续骚扰情况下，此阿勇8.2.2.3简化程序是，不能保证符合以80%-80%为基础的限值。作者: stone0371 时间: 2012-8-18 14:42
8.2 Type tests
型式试验
Type tests shall be made: 型式试验应按如下进行：
8.2.1 For appliances producing continuous disturbance:
产生连续骚扰的器具
8.2.1.1 Either on a sample of appliances of the type using the statistical method of evaluation in accordance with 8.3.
使用8.3的统计评定方法，对同类型器具进行抽样测试。
8.2.1.2 Or, for simplicity's sake, on one appliance only (see 8.2.1.3).
或者，为了简化，只在一个器具上进行（见8.2.1.3）。
8.2.1.3 Subsequent tests are necessary from time to time on appliances taken at random from the production, especially in the case indicated in 8.2.1.2.
经常从产品中随机抽取样品进行后续测试是必要的，尤其是8.2.1.2的情况下。
8.2.2 For appliances producing discontinuous disturbance:
产生断续骚扰的器具
8.2.2.1 On one item only.
只在一个试样上进行。
8.2.2.2 Subsequent tests are necessary from time to time on an appliance taken at random from the production.
经常从产品中随机抽取样品进行后续测试是必要的。作者: stone0371 时间: 2012-8-18 14:46
8.2.2.3 In the case of controversy with regard to a type approval test, the following shortened procedure is applied:
当对型式试验的结果发生争议时，采用下列简化程序：
If the first appliance is measured and fails, three additional appliances shall be measured at the same frequency or frequencies at which the first appliance failed.
如果第一个器具检测不和，则应再去三个器具在第一个器具不合格的一个活多个相同频点上进行测量。
The three additional appliances are judged according to the same requirements as applied to the first appliance.
三个附加器具按照第一个器具的要求进行判定。
If all three additional appliances comply with the relevant requirements, the type is approved.
如果三个附加器具都符合相关要求，则型式试验通过。
If one or more additional appliances do not comply, the type is rejected.
如果一个或一个以上的附加器具不符合，则型式试验不通过。作者: stone0371 时间: 2012-8-18 15:01
8.3 Compliance with limits for appliances in large-scale production
大批量生产的器具的符合性评定
Statistically assessed compliance with the limits shall be made according to one of the three tests described below or to some other test which ensures compliance with the requirements of 8.1.2 above.
The test according to 8.3.1 or 8.3.2 should be performed on a sample of not less than 5 items of the type, but if, in exceptional circumstances, 5 items are not available, then a sample of 3 or 4 shall be used.
根据8.3.1和8.3.2进行的测试抽取的样品数量不少于5个。但是，如果在特殊情况下，不能抽取5个样品，则使用3个或4个样品。作者: stone0371 时间: 2012-8-18 15:04
The test according to 8.3.3 should be performed on a sample of not less than 7 items.
根据8.3.3进行的测试的样品数量不少于7个。
NOTE It is recommended to start the evaluation with the method described in 8.3.1 and only in case the test has not been passed to continue with the more extensive methods described in 8.3.2 and 8.3.3.
注：推荐评估开始采用8.3.1的方法并且只在测试没有通过时继续使用8.3.2和8.3.3的扩展方法。作者: stone0371 时间: 2012-8-18 15:10
8.3.1 Test based on a general margin to the limit
基于限值通用裕量的测试
Compliance is given when the measured values from all items of the sample are under the limit and the margin to the limit is not shorter than the general margin, given in Table 4 below.
当抽样样品中的样本的测量值符合标准限值并且限值裕量不小于下面tabel4的通用裕量时，认为满足（限值）规范。作者: stone0371 时间: 2012-8-18 15:12
由于表格不方便在论坛表示，下面的内容截图出来：
作者: abc3422124 时间: 2012-8-20 09:23
都是一些非常好的资料作者: stone0371 时间: 2012-9-2 13:49
9 Methods of measurement of radiated emission (30 MHz to 1 000 MHz)
辐射发射的测量方法：
9.1 Measuring devices
测量设备
Receivers with quasi-peak detectors shall be in accordance with Clause 4 of CISPR 16-1-1.
准峰值测量接收机要符合CISPR 16-1-1第4章。
9.2 Measuring arrangement ：测量安排
All measuring arrangements shall be in accordance with the requirements of the applied testing method and the referenced measurement standard in Table 3.
所有的测量那排都要遵守表3中规定的测量参考标准和适用的测量方法的要求。
10 Measurement uncertainty ：测量不确定度
The results of measurements of emission from household appliances, electric tools and similar apparatus shall reference the measurement instrumentation uncertainty considerations contained in CISPR 16-4-2.
Determining compliance with the limits in this standard shall be based on the results of the compliance measurement, not taking into account measurement instrumentation uncertainty.
确定遵守本标准的限值应基于符合限值的测量结果，并不考虑测量设备的不确定度。
However, the measurement uncertainty of the measurement instrumentation and its associated connections between the various instruments in the measurement chain shall be calculated and both the measurement results and the calculated uncertainty shall appear in the test report.