Methods of measurement for equipment used in digital microwave radio transmission systems - Part 2: Measurements on terrestrial radio-relay systems - Section 9: Services channels (IEC 60835-2-9:1995); German version EN 60835-2-9:1995
数字微波无线电传输系统所用设备的测量方法第2部分:地面无线电中继系统的测量第9节:服务信道(IEC 60835-2-9-1995);德文版EN 60835-2-9:1995