FIELD: measurement technology; electric engineering.
SUBSTANCE: device can be used for estimating changes in signal frequency range when the signal passes through signal transmission/amplification paths which signals have precision multi-band frequency correction. Device helps to observe results of introduced correction. Device has two spectrum analyzers which are used for determining signal spectra at input and output of tested four-terminal networks. Spectra of input and output signals are normalized and introduced into normalized signals' comparison unit. Signal from module determining unit is sent to indicator for visual representing of result of comparing depending on frequency. Device provides ability of visual estimation of degree of change in random signal's spectral form when signal passes through four-terminal network having frequency-dependent characteristics.
EFFECT: improved efficiency; improved precision.
5 cl, 5 dwg
