Patent ID: 7620509

Claim:
An oscilloscope adapted for detecting a frequency hopping pattern of an RF frequency hopping signal, comprising: an input for receiving an RF signal under test, said RF signal under test exhibiting a frequency-hopping pattern; an acquisition unit for sampling said RF signal under test, producing digital signal samples, and storing said digital signal samples in an acquisition memory; waveform processing unit for processing said digital signal samples; a waveform memory for storing said processed digital signal samples; a display device for displaying a representation of said processed digital signal samples; and a controller for controlling said acquisition unit, said waveform processing unit, and said display device; wherein said controller controls calculation of a spectrogram from said digital signal samples, estimation of a Time Frequency Code (TFC) for said RF signal under test, determination of whether said estimated TFC matches a known TFC, and display of said TFC on said display screen.