The Main Differences Between Lighting test Standard CISPR 15: 2018 and 2013 Versions
2019-12-03

The Main Differences Between Lighting test Standard CISPR 15: 2018 and 2013 Versions

The latest version of the international standard for lighting equipment CISPR 15: 2018 has been released on February 16, 2018. Compared with the old version CISPR 15 : 2013+A1: 2015, the major changes are as follows: Removed the insertion loss test requirements and the original related Appendix A; Table4, Table5, Table6 add conduction interference limit table requirements for power ports for ELV ...

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The LED Driver RMS Value Measurement and Analysis
2019-06-26

The LED Driver RMS Value Measurement and Analysis

As we known the quality of LED lighting products depend on two points: One is LED chip(light source); Second is LED power driver. In the practice, there only have few company can provide qualified LED chip such as PHILIPS, OSRAM and CREE in the market. Generally, the LED chip have very small change to get quality problem, but we heard many news about low quality LED lighting products was found and...

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How do you choose integrating sphere if you test small size but high power HID lamp?
2019-05-28

How do you choose integrating sphere if you test small size but high power HID lamp?

HID lamp is high intensity discharge lamp. High pressure sodium lamp, high pressure mercury lamp, xenon lamp, metal halide lamp are all belong to HID lamp. We generally use Integrating Sphere Spectroradiometer Test System to test the photometric, colorimetric and electrometric parameters. Generally we suggest the diameter size of Integrating Sphere according to the size of lamp under test. If yo...

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The Methods and Principles for LED Lighting EFT Immunity Measurement
2019-05-20

The Methods and Principles for LED Lighting EFT Immunity Measurement

When doing EFT immunity test, there are L1, L2, L3, N and PE interface. PE and earth are two different concepts. Electrical fast pulse interference is common mode, in the experimental setup figure of the standard, we can see the signal cable which is from the test generator can connect with corresponding power lines (L1, L2, L3 , N and PE) through the selectable coupling capacitor, and the signal ...

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Contents and Meanings of EMC Test According to International Standards
2019-03-10

Contents and Meanings of EMC Test According to International Standards

Electromagnetic Compatibility EMC refers to the ability of a device or system to function properly in its electromagnetic environment and does not constitute an electromagnetic disturbance to anything in the environment. Sensor electromagnetic compatibility refers to the adaptability of the sensor in the electromagnetic environment, maintaining its inherent performance and the ability to perform ...

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How to choose LISUN products for Saudi Arabia’s latest standard SASO2902?
2019-02-26

How to choose LISUN products for Saudi Arabia’s latest standard SASO2902?

Recently Saudi Arabia released new LED standard SASO2902 for energy efficiency, functionality and labeling requirements for Lighting products. We have got the SASO2902 in 2017 which is draft and already produce some instruments for some of the Saudi Lab. Such as below products: 1. LPCE-2(9000B) High Precision Spectroradiometer Integrating Sphere System. It can test EEI, EEI, CRI, CCT, LUMEN ,...

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How to Disable Digital Driver Signature Enforcement for 64bit WIN 7 8 10?
2019-02-26

How to Disable Digital Driver Signature Enforcement for 64bit WIN 7 8 10?

If the driver need be installed in 64 bit Windows System, it need have digital signature. While some driver don’t have digital signature and the PC can’t install this kinds of device. If you want to install this device in 64 bit Windows System, You need disable digital signature enforcement. Our some equipments need disable signature enforcement, such as LMS-6000, LMS-7000 and LMS-9000 series ...

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The differences of the test result between LISUN WT2080 LED power driver tester and multimeter when testing LED power driver
2019-01-18

The differences of the test result between LISUN WT2080 LED power driver tester and multimeter when testing LED power driver

Some customers suspect the accuracy of the WT2080 because there is some differences of the test result between LISUN WT2080 LED Power Driver Tester and multimeter when testing LED power driver. In fact, the test results are different because the test principle is different: the WT2080 test result is the real effective value (RMS), the multimeter test result is the average value. LISUN WT2080 is ac...

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Why should you choose a constant current power supply for the LED driver?
2019-01-06

Why should you choose a constant current power supply for the LED driver?

The LED is a light-emitting diode, and its characteristic curve is basically the same as that of a normal diode. When the applied voltage reaches the diode conduction voltage, the slight change of the applied voltage can cause a great change in the diode current. The constant current is used to ensure that the current in the LED is constant. No matter how the voltage changes, the current flowing...

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