Spectrum analyzer improved comprising means of analysis and displaying the clinical

摘要

The invention relates to a measuring apparatus of frequencies. The apparatus comprises a measuring circuit of frequencies of producing a measurement signal in response to the reception of a signal. The measurement of frequencies is then digitized and stored by a processing circuit and the measurement is posted by means of display in the form of traces of signal. A control device of the mark allows a user to request a mark is mounted on the trace of the signal at a level of amplitude gives. A circuit makes it possible to produce a mark on the trace of the signal at the level of the amplitude specified by the control device for marking or in a position also rapprochee as possible. / p & & p & application to the instrumentation electronic measurement of frequencies.