Oscilloscope uses a narrow electron beam composed of high-speed electrons to hit the screen coated with fluorescent substances, which can produce tiny light spots. Under the action of the measured signal, the electron beam, like a pen tip, can draw the curve of the instantaneous value of the measured signal on the screen.
Extended data:
Matters needing attention in the use of oscilloscope:
1, oscilloscope should generally avoid frequent switching.
2. If the waveform is found to be disturbed by the outside world, the oscilloscope shell can be grounded.
3. The voltage of "Y input" should not be too high to avoid damaging the instrument, and the maximum attenuation should not exceed 400V V.. When the "Y input" conductor is suspended, the interference waveform appears due to external electromagnetic interference, which should be avoided.
4. Turn the brightness level knob counterclockwise to the end before turning off the machine, so as to minimize the brightness, and then turn off the power switch.
5. When observing and adjusting the bright spots on the screen, the brightness of the bright spots should be moderate, not too bright.
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