The oscilloscope is the most commonly used tool by hardware engineers, which can be used for basic waveform testing, confirming whether related parameters meet requirements, and for diagnosing circuit anomalies; it can also be used for eye diagram testing of high-speed signals, Ethernet port template testing, jitter analysis, etc.; or for decoding commonly used serial … Read more
Accurate measurement begins at the probe and probe end. Probes that match the oscilloscope and the device under test (DUT) can capture complete signals into the oscilloscope for maximum signal fidelity and measurement accuracy. To measure typical signals and voltage levels, passive probes can provide easy-to-use and various measurement capabilities at a reasonable price. However, … Read more
With the rise of industrial intelligent manufacturing, Programmable Logic Controllers (PLCs) have become the core devices in industrial automation systems, widely used in various production equipment and processes. By connecting sensors, actuators, and other devices, PLCs can monitor and control industrial processes in real-time, ensuring the safe operation of equipment and production efficiency. However, traditional … Read more
In the fields of electronic engineering and automation, frequency measurement is a fundamental and important task. Whether in signal processing, communication systems, or industrial automation, accurately measuring signal frequency is an indispensable part. Traditional frequency measurement devices are often expensive and bulky, making them impractical for small projects or individual enthusiasts. The frequency counter design … Read more
1. Self-Diagnosis of LIN BusWhen performing self-diagnosis on the LIN data bus system, the address code of the LIN master control module must be used. The self-diagnostic data is transmitted from the LIN slave control module to the LIN master control module via the LIN bus. All self-diagnostic functions can be completed on the LIN … Read more
There are many key indicators for measuring the quality of an oscilloscope testing system, and the “Effective Number of Bits (ENOB)” is crucial for understanding the entire measurement system. This article will discuss the effective bits of oscilloscopes, the impact of ENOB on actual signal testing, and provide methods for solving it using EXCEL in … Read more
The oscilloscope is the most common instrument for electronic engineers, and many people compare it to the “eyes” of an engineer, which is enough to illustrate how important oscilloscopes are to engineers. How is the signal displayed on the oscilloscope screen? On the oscilloscope, the signal is transmitted through a series of resistors and capacitors … Read more
X-Y display, also known as a scatter plot or cross-plot, provides a method for plotting one trace against another. This type of display can be used to compare two waveforms and show the relationship between them. A third parameter, such as frequency of occurrence, can be added to the two-dimensional plot as a variation in … Read more
The digital multimeter is a powerful assistant for measuring electrical signals. Although it is called a “universal” meter, its common functions are limited to measuring voltage, current, and resistance. Voltage and current measurements also include AC and DC ranges. In addition, some multimeters can measure inductance, capacitance, continuity, diode forward voltage, transistor current gain, counting … Read more
01 DM3068 Digital Multimeter 1. DM3068 Digital Multimeter This is a RIGOL six-and-a-half digit digital multimeter, model DM3068. Yesterday, while using this multimeter in DC mode to test the DC signal in a square wave signal, I encountered a major pitfall. The frequency of this square wave signal is 1kHz, with a low level of … Read more