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。

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。

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。

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。

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。

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.

用统计的方法评定是否符合限值要求应按照下述三种试验方法中的一种，或者其他能保证符合前8.1.2要求的试验方法来进行。

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。

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。

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。

由于表格不方便在论坛表示，下面的内容截图出来：

都是一些非常好的资料