Methods of measurement for equipment used in digital microwave radio transmission systems - Part 2: Measurements on terrestrial radio-relay systems; section 6: Protection switching (IEC 60835-2-6:1995); German version EN 60835-2-6:1995
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6节:保护开关(IEC 60835-2-6-1995);德文版EN 60835-2-6:1995