GB/T 4958.17-1992
Methods of measurement for equipment used in terrestrial radio-relay systems.Part2:Measurements for sub-systems.Section6： Diversity twin-path and hot stand by equipment (English Version)
- Standard No.
- GB/T 4958.17-1992
- Language
- Chinese, Available in English version
- Release Date
- 1992
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2017-12
- Latest
- GB/T 4958.17-1992
- Replace
- SJ/Z 9094.7-1987
- Scope
- This standard applies to analog systems and mainly deals with the measurement of diversity receiving equipment using two or more receivers on a radio relay station. For this reason, we assume that diversity equipment constitutes switching and (or) diversity channel circuits for synthesis. Although in addition to the diversity channel equipment itself, transmitters, receivers, modulators and demodulators may also be included in the measurement range. In addition to the measurement of diversity equipment, the measurement of dual-path and hot standby equipment not discussed in this series of standards GB4958.9 "Measurement methods for equipment used in ground radio relay systems Part II: Subsystem Measurement Section 9 Standby Channel Switching Equipment" considered in this standard. The measurement involves switching characteristics and switching process characteristics, and should be equally applicable to the test of standby channel switching equipment and the measurement of diversity, dual-channel and hot standby equipment. This content can be found in this series of standards GB4958.9.
GB/T 4958.17-1992 history
- 1992 GB/T 4958.17-1992 Methods of measurement for equipment used in terrestrial radio-relay systems.Part2:Measurements for sub-systems.Section6： Diversity twin-path and hot stand by equipment
GB/T 4958.17-1992 Methods of measurement for equipment used in terrestrial radio-relay systems.Part2:Measurements for sub-systems.Section6： Diversity twin-path and hot stand by equipment has been changed from SJ/Z 9094.7-1987 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 2: Measurements for sub-systems--Setion 6:Diversity, twin-path and hot stand-by equipment.
GB/T 4958.17-1992 -All Parts
GB/T 4958.1-1985 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 1: Measurement common to subsystems and simulated systems--Section One--General
GB/T 4958.10-1988 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 3:Simulated systems--Section One General
GB/T 4958.11-1988 Methods of measurement for equipment used in terestrial radio-relay systems--Part 3:Simulated systems--Section Three Measurements for monochrome and colour television transmission
GB/T 4958.12-1988 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 3:Simulated systems--Section Four Measurements for f.d.m. transmission
GB/T 4958.13-1988 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 3:Simulated systems--Section Five Measurement of mutual interference
GB/T 4958.14-1992 Methods of measurement for equipment used in terrestrial radio-relay systems.Part1:Measurements common to sub-systems and simulated radio-relay systems--Section two.Measurements in the radio-frequency range
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
GB/T 4958.16-1992 Methods of measurement for equipment used in terrestrial radio-relay systems.Part2:Measurements for sub-systems.Section3： R.F.branching networks
GB/T 4958.17-1992 Methods of measurement for equipment used in terrestrial radio-relay systems.Part2:Measurements for sub-systems.Section6： Diversity twin-path and hot stand by equipment
GB/T 4958.2-1988 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 3: Simulated systems--Section Two Measurements in the basehand
GB/T 4958.3-1988 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 3: Simulated systems--Section Six Measurements for sound-programme transmission
GB/T 4958.4-1988 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 2:Measurements for sub-systems--Section One--General
GB/T 4958.5-1988 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 2:Measurements for sub-systems--Section Four--Frequency modulators
GB/T 4958.6-1988 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 2:Measurements for sub-systems--Section Five Frequency demodulators
GB/T 4958.7-1988 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 2:Measurements for sub-systems--Section Seven Radio transmitters
GB/T 4958.8-1988 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 2:Measurements for sub-systems--Section Eight Radio receivers
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