IEC 60244-4 Ed. 1.0现行
Methods of measurement for radio transmitters. Part 4: Amplitude/frequency characteristics and non-linearity distortion in transmitters for radiotelephony and sound broadcasting
出版：International Electrotechnical Committee
专家解读视频
Applies to all transmitters for A3 class of operation. Applies also to radiotelephony transmitters with 1, 2, 3 or 4 channels for A3A, A3B, A3H and A3J class of operation, and to frequency modulated transmitters for monophonic sound broadcasting. Applies in part to transmitters for A7A and A7B class of operation. IEC 60244-4 itself describes standard operating conditions, standard modulation input arrangements and frequencies (Section One). It also describes standard methods to be used for measuring input impedance, the amplitude/frequency characteristics and the intelligible crosstalk (Section Two).
HD 236.4:1977 - Identical
SS IEC 244-4 Ed. 1 (1997) - Identical
SS IEC 244 Ed. 2 (1991) - Identical
NEN 10244-4:1982 - Identical
DIN IEC 60244-4 (1983-05) - Identical
