Method and measuring device for measuring the spectra in adjacent channels

摘要

A measuring device (1), for measuring the spectrum of a measured signal in several neighboring channels (15-9-159) of a working channel (14), includes a selective filter (9) which damps the working channel (14) more strongly than the neighboring channels (15-9-159). Furthermore an analogue/digital converter (5) is provided which detects the filtered measured signal from all the channels to be measured (15-9-159, 14) in a parallel and broadband manner and converts the above to a digital signal. An equaliser (11) in series with the analogue/digital converter (5), equalises the digital signal with a frequency response which is the reciprocal of the frequency response of the selective filter (9).