An oscilloscope is an instrument that displays the changes in the trajectory of the instantaneous value being measured. It can transform invisible electrical signals into visible images, making it easier for people to study the changing processes of various electrical phenomena. An oscilloscope uses a narrow electron beam composed of high-speed electrons to hit a screen coated with fluorescent material to produce tiny light spots. Under the action of the measured signal, the electron beam is like the tip of a pen, which can depict the change curve of the instantaneous value of the measured signal on the screen. You can use an oscilloscope to observe the waveform curves of various signal amplitudes changing with time. You can also use it to test various electrical quantities, such as voltage, current, frequency, phase difference, amplitude modulation, etc. Although imported oscilloscopes such as Tektronix, Agilent, LeCroy, etc. are more advanced and of better quality, they are also very expensive. A good oscilloscope costs one million yuan. Of course, many large state-owned enterprises will still choose it. Such an expensive oscilloscope is relatively high-end because of its good performance, but for ordinary small and medium-sized enterprises, buying such an oscilloscope is a big expense. So are there any better domestic oscilloscopes that can be applied to various small and medium-sized enterprises? Of course there are. Now, the best brands of domestic oscilloscopes are undoubtedly Shenzhen Antaixin and Beijing Puyuan, so domestic ones can try these two. , of course, my personal recommendation is ATTEN. Customers generally respond very well, so there is no proof. Below I will list the major domestic oscilloscope brands. There are many, but there are only two that can be used, Beijing Puyuan RIGOL and Shenzhen ATTEN. Other brands are crude products that are not easy to use and have a high failure rate because they do not have a R&D team themselves. They use some students to make them. After the students graduated, they replaced them with new ones. The technology has not improved, and the techniques can only be the same. Good times and bad. The domestic oscilloscopes that are available and usable are better ones made by Antaixin. Compared with Ulide, Antaixin has a user-friendly operation and control system with good appearance, good heat dissipation and full functions. Compared with Puyuan, the performance is the same but the price is lower.