In the process of power supply design and debugging, ripple testing is a critical step in assessing power quality. Many engineers set their oscilloscopes to a bandwidth limit of 20MHz and AC coupling mode during ripple testing. This is not a random choice, but rather based on profound technical considerations. This article will delve into … Read more
Before purchasing an oscilloscope, it is essential to understand your product and determine what type of equipment you need based on the objects you intend to test. It’s not necessarily true that the more advanced the equipment, the better the product will be. Previously, some netizens summarized 10 suggestions, which I personally think are quite … Read more
Recently, during interviews, I found that many hardware test engineers are completely unaware of the concept of oscilloscope bandwidth, and some with over three years of experience do not understand the concept of bandwidth. Some candidates can roughly state the conclusion: the recommended bandwidth for an oscilloscope should be 3-5 times the signal frequency. However, … Read more
01 What made me curious about passive probes It all started with a question: can a 1X passive probe be used to match a 50-ohm or 75-ohm system like a coaxial cable? Experienced individuals would immediately say no, because even a 1X probe has a significant resistor in series. I happened to have a broken … Read more
With the rapid development of electronic technology, communication signal frequencies are increasing, and the quality requirements for signals are becoming more stringent. Is it enough to just choose an expensive oscilloscope to measure these high-speed signals? Not necessarily; if some details are overlooked, even the most expensive oscilloscope may not provide accurate measurements! 1. Bandwidth … Read more
Before learning how to use an oscilloscope to reduce noise, let’s first understand how noise in oscilloscopes arises. Many people who have just transitioned from analog oscilloscopes to digital oscilloscopes may complain that the waveforms measured by their new oscilloscope are not as clear as those from their old analog oscilloscope, even doubting whether their … Read more
Many students have probably experienced this: While watching short videos at home, suddenly the network lags during an exciting moment in a game, and the video won’t load, causing characters to fly off the map??? Lying in bed playing on your phone, you turn over and the Wi-Fi disconnects, leaving you isolated from the internet??? … Read more
Source: ZTE Document Original Author: FM MKT and Solution Team This article introduces the characteristics of each generation of Wi-Fi technology from Wi-Fi 4 to Wi-Fi 7. Rapid Development of Wi-Fi Technology Each new generation of Wi-Fi protocol brings higher wireless rates. From Wi-Fi 4 to Wi-Fi 7: Wireless network technology has significantly improved, achieving … Read more
Theoretical Speed • Wi-Fi speed continues to improve with updates to the Wi-Fi protocol. Wi-Fi speed has undergone a development process from slow to fast. The initial theoretical wireless transmission speed of Wi-Fi was only 11 Mbit/s, and after several updates, we have achieved the current results. • Wi-Fi speed is further enhanced with the … Read more
What is Functional Magnetic Resonance Imaging? Various magnetic resonance imaging techniques based primarily on conventional T1WI and T2WI mainly display the morphological structures of human organs or tissues and their signal intensity changes, collectively referred to as conventional MRI examinations or conventional MR imaging sequences. With the development of MRI system hardware and software, various … Read more