骚扰功率CRP与SRP，标准要求为10cm± 1cm

曾工

Absorbing Clamp CRP and the SRP shall be (10 ± 1)

骚扰功率测试中，滑轨参考点与功率吸收钳参考点（不同厂家的骚扰功率吸收钳参考点不一样），标准要求为10cm± 1cm。

Absorbing clamp
The following positioning requirements relating to the absorbing clamp apply.

• The absorbing clamp is placed around the LUT as shown in Figure 6. The absorbing clamp shall be positioned on the clamp slide with the current transformer facing the EUT.
• During the clamp scanning, the minimal horizontal distance between the CRP and the SRP shall be (10 ± 1) cm. This distance of 10 cm is required to accommodate different types ofclamps, due to the possible different positions of the CRP. The test results very much depend on this initial position. For reproducibility purposes, it is essential to include this additional specification to ensure that all initial positions can be identical.
  

• The EUT shall be keep in the centre of the absorbing clamp at the location of the current transformer, i.e., at the CRP. Most clamps have a centering support for this purpose.
  

• Slide reference point (SRP)：滑轨参考点
• Clamp reference point (CRP)：功率吸收钳参考点
  

台式设备骚扰功率测试设置摆放示意图
Figure 6 – Side view of the absorbing clamp measurement set-up for table top EUTs

Figure 6 – Side view of the absorbing clamp measurement set-up for table top EUTs

落地式设备骚扰功率测试设置摆放示意图

Figure 7 – Side view of the absorbing clamp measurement set-up for floor standing EUTs

Figure 7 – Side view of the absorbing clamp measurement set-up for floor standing EUTs

曾工

骚扰功率测试前，需要做环境测量

第一步，EUT关闭，先拉线测试背景，要求背景余量大于6dB

第二步，才是定点预扫描

第三步，才是定频率拉线做最终测试