Patent ID: 9500676
Filing Date: 2016-11-22
CPC Classification: G01R

Claim Text:
1. A test and measurement instrument, comprising: a display having a time domain graticule and a frequency domain graticule; a processor configured to process an input signal to display a time domain waveform of the input signal in the time domain graticule, the input signal being correlated to a time base, the processor being configured to process the input signal and display a frequency domain waveform of the input signal in the frequency domain graticule, the frequency domain waveform being correlated to a selected time period of the time base; the processor being configured to generate a spectrum time indicator configured to graphically illustrate on the time domain graticule the selected time period associated with the frequency domain waveform; a zoom control to adjust a zoom level of the time domain waveform display in the time domain graticule; a pan control to adjust a position of the zoomed portion of the time domain waveform display in the time domain graticule; and the processor being configured to adjust a location of the spectrum time indicator on the time domain graticule to a panned location based on adjustments to the zoom and pan controls and to automatically update the frequency domain graticule to illustrate a portion of the frequency domain waveform indicating a spectrum of the input signal at the panned location of the spectrum time indicator on the time domain graticule, wherein the frequency domain waveform is a spectrum waveform.