本标准规定了在5 Hz至400 kHz的频率范围内测量视频显示终端（VDT）附近电场和磁场的程序。本标准采用了现有的国际测量技术[B7]和实践，以实现在实验室控制环境中进行测试的一致且和谐的VDT测量标准。这种测量对于依赖于电子设备附近电场和磁场水平知识的调查研究来说是必要的。 本标准中规定的特性将在受控实验室测试环境中进行测试，用户安装时很难确定该环境的要求。 因此，人们认识到，在实验室获得的结果可能难以在现场环境中重现。 本标准不提供特定频率下的测量，但为两个频带中的每一个提供一次测量:5 Hz至2 kHz和2 kHz至400 kHz

This standard provides procedures for the measurement of electric and magnetic fields in close proximity to video display terminals (VDTs) in the frequency range of 5 Hz to 400 kHz. This standard adapts existing international measurement technologies [B7] and practices to achieve a consistent and harmonious VDT measurement standard for testing in a laboratory controlled environment. Such measurements are needed for investigative studies that rely on the knowledge of electric and magnetic field levels near electronic equipment. The requirements of the controlled laboratory test environment in which the characteristics specified in this standard are to be tested are difficult to establish at a user's installation. Therefore, it is recognized that the results obtained in the laboratory may be difficult to reproduce in the on-site environment. This standard does not provide measurements at specific frequencies, but does provide one measurement for each of two frequency bands: 5 Hz to 2 kHz and 2 kHz to 400 kHz