The phase difference, in degrees, can be determined using the equation: The period can also be measured using the cursors. Cursor time readouts in the lower right corner of the screen indicate a delay of 10 ns. You can accomplish that using the oscilloscope’s cursors as shown in Figure 2 where relative cursors measure the time difference between the maxima of the two 10 MHz sine waves. Phase difference can be measured on an oscilloscope by finding the time delay between two waveforms and their period. Phase difference using delay time measurement Signals that differ in phase by ☙0º are in phase quadrature. Two signals are said to be in opposition if they are 180º out of phase. Conversely, a waveform with lagging phase has phase points occurring later in time than the other paired waveform. That’s the case of when a signal passes through, say, a capacitor: the output current will lead the output voltage by 90º. A waveform with a leading phase has a specific phase point occurring earlier in time than the same phase point on its partner. Often, you’re interested in the phase difference between a signal before and after it passes through a circuit, cable, connector, or PCB trace. Phase difference, or phase angle, is the difference in phase between two phase points, usually on two different waveforms with the same frequency.
【Webinar】Leverage the new features of the STM32 ecosystem to enhance your STM32U5 designsįigure 1 The significant phase points on a periodic sine wave are the peaks and zero crossings.
0 kommentar(er)
