DEVICE FOR MEASURING AREA OF FREQUENCY DISTORTIONS Russian patent published in 2007 - IPC G01R23/18 

FIELD: radio-measurements, possible use for building devices for measuring distortions introduced by frequency-dependent devices, in particular, audio-signal amplifiers.

SUBSTANCE: device for measuring area of frequency distortions, occurring in a quadripole, contains block for measuring amplification coefficients in N points of working frequencies range and a functional converter, output of which is the output of measuring device, first testing input of which is the first input of block for measuring amplification coefficients, second input of which is used as second testing input of measuring device, outputs of block for measuring amplification coefficients are connected to corresponding inputs of functional converter. Block for measuring amplification coefficients may be made in form of device for estimating ratios of half-period average or mean-square values, or dispersions of signals in N points of working frequencies range.

EFFECT: ensured capability for estimating area of frequency distortions which occur in a quadripole on passage of useful signal in working mode through it, without disabling the quadripole and without injecting a special testing signal into its input.

4 cl, 2 dwg