Subject: Determination of voltage at loudspeaker terminals
Question:
Is the apparatus to be operated in a way as to deliver one-eighth of the NON-CLIPPED OUTPUT POWER to the RATED LOAD IMPEDANCE also for the alternative test method described in paragraph 3 of clause 4.2.4(a)?
Decision:
When determining whether a part or terminal is hazardous live acc. to 9.1.1 and 11.1 at the manufacturer's option the apparatus may also be operated in such a way as to deliver one-eight of the NON-CLIPPED OUTPUT POWER for requirements of 9.1.1 and the maximum NON-CLIPPED OUTPUT POWER for requirements of 11.1 to the RATED LOAD IMPEDANCE using a 1 kHz signal.
问题：
设备是否按照4.2.4（a）第三段所述的代替方法，在额定负载阻抗上施加1/8非削波输出功率？
决定：
当确定一个组件或端子是否存在危险带电时，9.1.1条款施加1/8非削波输出功率，11.1条款施加最大非削波输出功率，使用1kHz音频信号。
提示：
使用1kHz的原因主要是出于试验操作简单，以及结果的可复现性，发热温升试验中也可以使用1kHz作为信号源输入，可以认为使用1kHz跟粉红噪声在发热温升上的结果差异不大。
但如果存在争议时，还是应按标准使用粉红噪声。
音频相关参考文献见以下：
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