SJ/Z 9094.14-1987
Methods of measurement for equipment used in terrestrial radio-relay systems--Part 3: Simulated systems--Section 5: Measurement of mutual interference (English Version)
- Standard No.
- SJ/Z 9094.14-1987
- Language
- Chinese, Available in English version
- Published By
- Professional Standard - Electron
- Status
- Latest
- SJ/Z 9094.14-1987
- Replace By
- GB/T 4958.13-1988
- Scope
- This chapter deals with interference measurements on simulated radio relay systems for television and frequency division multiplexed telephone transmissions. This interference may be caused by signals within the same mixed baseband of a certain radio frequency channel, or it may be caused by other radio frequency channels. In order to make the best estimate of the noise occurring in the working state of the radio relay system. When measuring the simulation system according to Chapter 3 of Part 3 of this series of standards "Measurement of black and white and color television transmission" and Chapter 4 of Part 3 of this series of standards "Measurement of frequency division multiplexing transmission", it is necessary to consider the interference caused by other signals. Interference noise. In order to determine the noise gain caused by interference waves, measurements are usually made with and without interference sources.
SJ/Z 9094.14-1987 history
- 1970 SJ/Z 9094.14-1987 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 3: Simulated systems--Section 5: Measurement of mutual interference
SJ/Z 9094.14-1987 Methods of measurement for equipment used in terrestrial radio-relay systems--Part 3: Simulated systems--Section 5: Measurement of mutual interference was changed to 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.
