The working principle of the oscilloscope is that the oscilloscope uses a narrow electron beam composed of high-speed electrons and hits the screen coated with fluorescent substances to produce fine light spots. Under the action of the measured signal, the electron beam is like the pen tip of a pen, which can trace the change curve of the instantaneous value of the measured signal on the screen. With an oscilloscope, you can observe the waveform curves of various signal amplitudes over time. You can also use it to test various electrical quantities, such as voltage, current, frequency, phase difference, amplitude adjustment, and so on.
Steps for usage
(1) Pre-adjustment: Turn the brightness knob counterclockwise to the end, the vertical and horizontal displacements are turned to the middle, the attenuation is set to the highest level, and the scan is set to the "outside X position";
(2) Turn on the power again, wait for a minute or two after the indicator lights up, and then perform related operations;
(3) Adjust the brightness first, then the focus, and then adjust the horizontal and vertical displacement so that the bright point is in the appropriate area in the center;
(4) Adjust the scan, scan fine adjustment and X gain, and observe the scan;
(5) Unplug the outer X file to the appropriate position of the scanning range file, and observe the voltage waveform of the vertical direction provided by the machine according to the law of sine and cosine;
(6) Connect the external voltage to be studied to the oscilloscope from the Y input and the ground, and adjust each position to a proper position. You can observe the waveform of this voltage (image with time change) (adjusting the synchronous polarity switch can make the image The starting point is from the positive or negative half-week;
(7) If you want to observe the vertical offset of bright spots (such as when a DC voltage is applied), you can adjust the scan to the "outside X" position.
Steps for usage
(1) Pre-adjustment: Turn the brightness knob counterclockwise to the end, the vertical and horizontal displacements are turned to the middle, the attenuation is set to the highest level, and the scan is set to the "outside X position";
(2) Turn on the power again, wait for a minute or two after the indicator lights up, and then perform related operations;
(3) Adjust the brightness first, then the focus, and then adjust the horizontal and vertical displacement so that the bright point is in the appropriate area in the center;
(4) Adjust the scan, scan fine adjustment and X gain, and observe the scan;
(5) Unplug the outer X file to the appropriate position of the scanning range file, and observe the voltage waveform of the vertical direction provided by the machine according to the law of sine and cosine;
(6) Connect the external voltage to be studied to the oscilloscope from the Y input and the ground, and adjust each position to a proper position. You can observe the waveform of this voltage (image with time change) (adjusting the synchronous polarity switch can make the image The starting point is from the positive or negative half-week;
(7) If you want to observe the vertical offset of bright spots (such as when a DC voltage is applied), you can adjust the scan to the "outside X" position.