Importance

Loading Importance Indicators...

Abstract

A spectrum analyzer includes a synchronizing signal input terminal (27A) and a sweep control signal generator (32) inserted between the synchronizing signal input terminal (27A) and a ramp address generator (23). In the case of making a frequency analysis of an input signal Sx which is a burst wave, a synchronizing signal SY, synchronized with the burst wave, is applied to the synchronizing signal input terminal (27A) from the outside and a sweep control signal SC which rises an arbitrary period of time after the synchronizing signal SY and has an arbitrary width is generated by the sweep control signal generator (32). The sweep control signal SC is applied to the ramp address generator (32), which sweeps, in each burst, a ramp voltage VR for controlling a local oscillator (16) and an address AD for effecting a write into a signal loading memory (19), and in the other periods the sweep is stopped.

Loading the Abstract Image...

First Claim