The role of oscilloscope

For the electrical engineer, the role of the oscilloscope cannot be replaced. The types and types of oscilloscopes are more and more, and the following discussion of the role of the oscilloscope is discussed.

First, the role of the oscilloscope 1. A wide range of electronic measuring instruments; 2. Measuring the waveform of electrical signals (voltage and time relationship); 3. Measuring the amplitude, period, frequency and phase parameters; 4. With the sensor, measuring everything can be converted into Voltage parameters (such as current, resistance, temperature, etc.)

Second, the role of the oscilloscope - measuring voltage Any measurement made by the oscilloscope, are attributed to the measurement of the voltage. The oscilloscope can measure the voltage amplitude of various waveforms. It can not only measure the DC voltage and sine voltage, but also measure the amplitude of pulsed or non-sinusoidal voltage. More useful is that it can measure the voltage amplitude of each part of a pulse voltage waveform, such as the impulse or the top drop. This is unmatched by any other voltage measurement instrument.

Third, the role of the oscilloscope - measuring time oscilloscope time base can produce a linear relationship with the time of the scan line, and thus can use the screen horizontal scale to measure the waveform of the time parameters, such as the periodic signal repeat cycle, pulse signal width, time Interval, rise time (leading edge) and fall time (back edge), time difference of two signals, and so on.

When the oscilloscope sweep switch “t/div” “trimming” device is turned to the calibration position, the time represented by the displayed waveform in the horizontal direction scale can be read directly according to the indicated value of the “t/div” switch. Accurately determine the time parameter of the signal under test.

Fourth, the role of the oscilloscope - measuring phase Using an oscilloscope to measure the phase difference between the two sinusoidal voltage has practical significance, with the counter can measure the frequency and time, but can not directly measure the phase relationship between the sine voltage.