GB/T 4958.15-1992 Methods of measurement for equipment used in terrestrial radio-relay systems.Part1:Measurements common to sub-systems and simulated radio-relay systems.Section 4.Measurements in the baseband (English Version)
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Status
2017-12
Latest
GB/T 4958.15-1992
Scope
This standard specifies the basic measurement methods related to subsystems such as amplifiers or simulated radio relay systems composed of subsystems. This standard applies to the measurement of the following parameters within the baseband range. --Input and output impedance (return loss); --Input and output levels; --Baseband gain or loss; --Amplitude frequency characteristics; --Group delay frequency characteristics; --Nonlinear amplitude distortion; -- Differential gain and phase distortion. The measurement methods of parameters related to specific baseband signals, such as the transmission of frequency division multiplexing telephone, television or sound programs, have been included in this series of standards GB4958 "Measurement methods for equipment used in terrestrial radio relay systems Part III: Simulation system Measurement" given in the relevant sub-standards.
GB/T 4958.15-1992 history
1992GB/T 4958.15-1992 Methods of measurement for equipment used in terrestrial radio-relay systems.Part1:Measurements common to sub-systems and simulated radio-relay systems.Section 4.Measurements in the baseband