Application of Real-Time Oscilloscopes in New Generation Optical Interface Time Domain Testing Introduction: When it comes to time domain testing of optical interface metrics, engineers often mention the sampling oscilloscope. This is because sampling oscilloscopes have unparalleled advantages in signal integrity: high bandwidth, low noise, and minimal quantization error (high vertical resolution). However, the downside … Read more
Let’s illustrate this issue with a concrete example. How does a typical task system handle information in embedded systems? The process looks like this: • Retrieve new data • Filter/Process data • Output data Pretty straightforward, right? We know that for real-time embedded system design, the main goal is determinism and minimizing jitter. The three … Read more
An eye diagram, as the name suggests, is a graphical representation that resembles an eye. How is it formed? This brings us to the persistence mode of an oscilloscope. The refresh rate of our naked eyes is only 60Hz, which sometimes makes it difficult to detect occasional abnormal signals. The persistence mode can superimpose and … Read more
Jitter is the short-term variation of a digital signal’s timing relative to its nominal value. There are two main types of jitter: random jitter and deterministic jitter. Random jitter is unbounded, meaning its value continues to increase as the measurement duration increases, and it is related to random processes such as noise. Deterministic jitter, on … Read more
Author Introduction Dr. Liu, Ph.D. from University of Electronic Science and Technology, an expert in microarchitecture. 1. Background The clock circuit is the most basic circuit in the chip. The performance of the clock circuit is related to whether all the modules in the SoC can achieve the expected goals, such as the main frequency … Read more
NEWS Click the blue words to follow us HangJing The core component responsible for digital-to-analog conversion in acoustic playback systems is the DAC chip. Since the 1970s, single-chip integrated circuit (IC) DACs have marked the beginning of the DAC chip era. Mainstream DAC Chips 1 AKM AKM is a Japanese chip manufacturer (Asahi Kasei Microdevices … Read more
EtherCAT, as an efficient fieldbus network technology, relies on a high real-time operating system to fully demonstrate its real-time performance. This article takes the ZMC600E as an example to test system real-time performance and analyze operating system jitter data. ZMC600E EtherCAT Master Controller is a new generation intelligent bus-type controller developed by Guangzhou Zhiyuan Electronics … Read more