How do we calculate the positive duty cycle for such a narrow pulse on the screen? We set the horizontal time base to 200us/div, allowing us to observe its two cycles. Since the pulse is too narrow, using traditional manual measurement with cursors is not the best option. What methods can the ZDS2022 provide? The … Read more
1. Rectangular Wave 1.1 Parameters The rectangular wave is a periodic waveform that switches between two fixed levels, as shown in the figure below. (1) Period T (seconds), frequency f = 1/T (Hz). (2) Duty cycle D: the ratio of the duration of the high level to the period, 0 ≤ d ≤ 1 (usually … Read more
1.PWM Introduction PWM (Pulse Width Modulation—— Pulse Width Modulation) is a very effective technique for controlling analog circuits using the digital output of microprocessors, widely used in measurement, communication, power control, and conversion in many fields. PWM technology has an important concept called Duty Cycle(Duty Cycle), which is the percentage of the high level in … Read more
The GPIO port connects to the BEEP pin of terminal J2, allowing the buzzer to sound by inputting a high level on the GPIO port. Frequency: Pitch, kHz Duty Cycle: Sound intensity, 0~100% The duty cycle is the ratio of the time the high level is on to the signal period: Duty Cycle = (Time … Read more
Hello everyone, in the previous episode of our 100-episode practical video series, we shared the pulse width search function of the ZDS2022 oscilloscope. The oscilloscope’s search function is practical and convenient. However, some users are still not very familiar with the search function of the ZDS2022 oscilloscope. In fact, the ZDS2022 oscilloscope has a powerful … Read more