This standard mainly stipulates the main technical indicators, test methods, and inspection rules of frequency domain IP meters. It also applies to spectrum IP meters. This standard is the common technical basis for the design, production and use of frequency domain IP instrument products. It is also the basis for formulating corresponding analog, digital and microcomputer-controlled frequency domain IP instrument product standards. This standard applies to various frequency domain polarization instruments, but does not apply to frequency domain magnetic polarization instruments.
DZ 0020.3-1991 history
1991DZ 0020.3-1991 General Technical Conditions of IP Instruments Frequency Domain IP Instruments