GB/T 4958.9-1988 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 2: Mesurements for sub-systems--Section Nine Stand-by channel switching equipment (English Version)
This section deals with the performance measurements of the subsystems used for alternate channel switching. This section gives the measurement methods for the following characteristics: transmission characteristics of the switching subsystem inserted at the baseband or intermediate frequency of the transmission channel, the operation and switching time of the pilot frequency and noise detector subsystem and the switching switch.
GB/T 4958.9-1988 history
1988GB/T 4958.9-1988 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 2: Mesurements for sub-systems--Section Nine Stand-by channel switching equipment
GB/T 4958.9-1988 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 2: Mesurements for sub-systems--Section Nine Stand-by channel switching equipment has been changed from SJ/Z 9094.3-1987 Methods of measurement for equipment used in terrestrial radio relay systems--Part 2: Measurements for sub-systems--Section 2: Stand-by channel switching equipment.