Equipment Selection
Selection guides for portable EL, string EL, UAV EL, power supplies and defect-reading software.
Battery Life and Portability of Portable EL Testers
For field EL, battery life and portability directly limit how much you can inspect per trip. This article explains what to check about endurance, weight and power supply in the field.
Read more →IV Testing and EL Combined: Understanding Integrated Testers
Integrated IV+EL testers combine power measurement and defect imaging in one workflow, saving time and linking result to cause. This article explains their value and when they fit.
Read more →What Determines the Price of a Portable EL Tester
EL tester price is driven by imaging sensor, daytime capability, resolution, automation and software—not just the hardware. This article breaks down the cost drivers so you can compare fairly.
Read more →EL Tester: Rent or Buy?
Whether to rent or buy an EL tester depends on inspection frequency, scale, and whether you build in-house capability. This article compares the two and helps you decide.
Read more →Does Autofocus Matter in EL Inspection?
In field EL, shooting distance and angle keep changing, so focus quality directly affects defect visibility. This article explains why autofocus matters and how it improves throughput.
Read more →Daytime vs. Night EL Inspection — What's the Difference?
Traditional EL needs darkness; daytime EL uses SWIR imaging and optical filtering to inspect modules under sunlight — even while they generate power — doubling the work window.
Read more →EL Inspection vs. IV Testing — Differences and How to Combine Them
IV testing quantifies a module's electrical output; EL imaging localizes the internal defects behind that output. They answer different questions and work best together.
Read more →How to Choose a Portable EL Tester — Six Key Criteria
A buyer's guide to portable EL testers covering imaging sensor, daytime capability, power module, focusing, software/AI and portability, matched to your inspection scenario.
Read more →What Is String EL Inspection? The Efficiency of Whole-String Imaging
String EL energizes and images a whole string or array at once instead of module by module, cutting the number of power cycles and greatly raising field throughput.
Read more →EL Inspection for TOPCon and Bifacial Modules — What's Different?
New cell technologies like TOPCon, HJT and bifacial modules bring subtle EL imaging differences. Understanding them avoids misreading defects on next-gen modules.
Read more →How to Choose a UAV EL Inspection System — Key Capabilities
A UAV EL system couples a drone, a SWIR imaging payload, string power and positioning software. This guide covers the key capabilities to evaluate — daytime imaging, payload, power, endurance, positioning and software.
Read more →Choosing an EL Test Power Supply — Key Parameters of Programmable String Sources
The power supply that injects current is central to EL imaging quality and safety. This guide covers the key parameters of programmable string power sources — constant current/voltage, ramping, protection and remote control.
Read more →Choosing EL Analysis Software — How Much Can AI Help?
When a plant produces tens of thousands of EL images, manual reading becomes the bottleneck. This guide covers what to look for in EL analysis software — AI defect detection, classification, localization, reporting and data security.
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