| 摘要 |
FIELD: measurement equipment.SUBSTANCE: method to measure is based on control of sweep of the used spectrum analyser with the help of a signal generated with a capacity detector at the intermediate frequency, and consists in the fact that the threshold level of sweep start is increased until visible asymmetry appears on the spectrogram or there are sags and/or surges within the rated band of the channel, it is reduced to the value, at which the even shape of the spectrum is recovered, being characterised by absence of above specified distortions of the spectrogram, the value of the threshold level is determined and fixed, and measurements are carried out at the level of sweep start below the fixed threshold level, but higher than the level of signals of the incoming channel and/or radio noise.EFFECT: higher accuracy of measurements of signal parameters of an outgoing channel of a base station under conditions, when within one and the same frequency band there are alternately signals of outgoing and incoming channel of a station.3 dwg |
