A good and consistent EMC measurement equipment is crucial in a lab doing compliance test and product development. One component of that ecosystem, which is critical, is the LISN which will serve to fix the line impedance and decouple the equipment under test with supply noise. When the routine maintenance is not taken care of, repeatability of measurements is lost, traceability, and safety are ch...
Abstract With the upgrading of the lighting industry towards high efficiency and intelligence, the optical-color performance of LED lamps, bulb lamps, and street lamps has become a core indicator for measuring product quality. The portable spectrometer, leveraging its portability and high precision, has emerged as a key device for on-site testing and quality control. This paper takes the Lisun LMS...
One of the most widely used accelerated corrosion tests, which is used to assess the action of metals and protective coating under constant applications, is the salt fog test. When you have to budget a test system or suppliers, it may be helpful to know the salt spray chamber price can begin in the low-thousand US dollars for basic benchtop systems and escalate well beyond that amount, to large ca...
An EM Test surge generator is special equipment which replicates the high-energy transient overvoltage’s a product is likely to experience in the field enabling engineers to conduct consistent surge immunity testing. These generators are intended to model two physically different types of transient events, the high-voltage combination wave, which is fast, short lived and high-voltage and the hig...
One of the major requirements of assessing LED luminaires deployed in the commercial, industrial, and outdoor setting is an accurate photometric measurement. An LED goniophotometer will be the main testing tool when the manufacturer requires an intense data, spatial distribution of light, and total luminous flux at standardized conditions. This paper describes the minimum setup specification of LM...
Proper light output is needed to measure and validate the output of the LED and to guarantee that the performance of the LEDs in the field is in variation with the claims on the products. Another common solution to the question of measuring the lumens of an LED is the lumen sphere (often referred to as an integrating sphere) which is a solution to the problem established by industry standards. Thi...
Knowledge of the behavior of materials to repetitive temperature variations is vital in the design of durable products used in electronics, automobile, aerospace, and manufacturing industries. A temperature test chamber gives a controlled condition to expose materials to cyclic thermal stress and show the variation of mechanical, electrical, and structural characteristics over a period of time. A ...
With the growth of faster, smaller, more interconnected electronic systems, the control of unwanted electromagnetic emissions has become a major task of engineers. It is crucial to know what is EMI and its impact on the efficiency of the system during compliance testing and the development of a product. An EMI spectrum analyzer is vital in this process as it allows an in-depth analysis of interfer...
Automobile parts have to be subjected to extreme environmental conditions that include road salt, moisture, changes in temperature, and factory pollutants. In order to achieve an effective long term durability, manufacturers use a salt spray test chamber whereby they recreate the corrosive environments in controlled laboratory conditions. The salt spray fog test is very popular during automotive q...
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