Design of Z-axis modulation circuit using oscilloscope

An oscilloscope is an electronic measuring instrument with a wide range of uses. It can transform invisible electrical signals into visible images, making it easier for people to study the changing processes of various electrical phenomena. The oscilloscope uses a narrow electron beam composed of high-speed electrons to hit a screen coated with fluorescent material to produce tiny spots of light. Under the action of the measured signal, the electron beam is like the tip of a pen, which can draw a curve of the instantaneous value of the measured signal on the screen. The oscilloscope can be used to observe the waveform curves of various signal amplitudes changing over time, and it can also be used to test various electrical quantities, such as voltage, current, frequency, phase difference, amplitude modulation, etc.　　

This pulse amplifier is a modification of the Tektronix oscilloscope, which can modulate the electron beam density of the cathode ray tube at a 3 volt logic level. Using a short coaxial cable, the output is connected to the cathode terminal of the external cathode ray tube, and the resulting rise time and fall time are 100 nanoseconds. If variable pulse amplitude is required, a potentiometer can be used instead of Rs, and the output is obtained from the sliding arm. Since the signal is AC coupled to the cathode, DC level drift is not important.