IEC 60487-2-4:1984标准是一项针对无线电中继系统中使用的设备的测量方法的标准。该标准的第2部分涵盖了子系统的测量，其中第4节介绍了频率调制器的测量方法。频率调制器是无线电中继系统中的重要组成部分，它用于将基带信号转换为调制信号，以便在无线电中继系统中传输。

IEC 60487-2-4:1984标准规定了频率调制器的测量方法，包括测量其输出频率、输出功率、调制度、调制灵敏度、调制失真等参数。这些参数的测量可以帮助用户了解频率调制器的性能和质量，以便选择合适的设备。

IEC 60487-2-4:1984标准的实施可以确保无线电中继系统的设备能够满足性能和质量要求。该标准的实施还可以促进无线电中继系统的发展和应用，提高其可靠性和稳定性。

相关标准
- IEC 60487-1:1984 Methods of measurement for equipment used in terrestrial radio-relay systems - Part 1: General considerations
- IEC 60487-2-1:1984 Methods of measurement for equipment used in terrestrial radio-relay systems - Part 2: Measurements for sub-systems - Section One: Radio equipment using analogue modulation
- IEC 60487-2-2:1984 Methods of measurement for equipment used in terrestrial radio-relay systems - Part 2: Measurements for sub-systems - Section Two: Radio equipment using digital modulation
- IEC 60487-2-3:1984 Methods of measurement for equipment used in terrestrial radio-relay systems - Part 2: Measurements for sub-systems - Section Three: Radio equipment using frequency modulation
- IEC 60487-2-5:1984 Methods of measurement for equipment used in terrestrial radio-relay systems - Part 2: Measurements for sub-systems - Section Five: Radio equipment using pulse modulation