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April/May, 2024


Beyond Megapixels: Frame Rate Matters for Digital Microscopes


By Jake Kurth, Country Manager for Americas, TAGARNO I


n the ever-evolving landscape of PCB manufacturing, the role of digital micro- scopes has become increasingly indispen-


sable. These advanced tools not only provide enhanced magnification but also open a realm of possibilities for professionals in the electronics industry. However, a critical fac- tor often overlooked in the selection of digital microscopes is the frame rate.


High-Res Images Digital microscopes serve as the


eyes of PCB manufacturing, allowing professionals to inspect and document details with precision. The ability to cre- ate high-resolution still images of mag- nified PCBs is crucial for quality control, analysis, and compliance with industry standards. When utilizing a digital microscope


to document findings, the emphasis is primarily on optical image resolution and pixel density. Optical Resolution, measured in microns (µm), determines the ability to differentiate between two objects. It directly impacts the sharpness and quality of the visual content as it corresponds directly to the extent of details achievable in the image. This factor is crucial, especially in the context of PCB manufacturing, where intricate features and defects demand a high-


A frame rate of 60 FPS helps ensure analysis of moving objects.


ing the details and clarity in the printed image from the microscope. Opting for a dig- ital microscope that strikes an optimal bal- ance between optical resolution and digital resolution is imperative, ensuring high-qual- ity visualization and documentation of the PCB manufacturing process. Resolution is a


The material matters in material handling


er resolution for clarity and precision in doc- umentation. Complementary to resolution, the


megapixel count and pixel density, measured in pixels per inch (PPI), determines the num- ber of pixels presented in one inch of the image and impacts the quality of the physical printed image. This is critical for maintain-


key factor to consider when choosing a digital microscope that will be used for documenting findings.


Recording Video The dynamic nature of certain processes


on the PCB assembly line demands a tool that can keep pace with real-time monitor- ing. Digital microscopes equipped with video recording capabilities become invaluable for capturing slow or dynam- ic processes, offering a deeper under- standing of the production workflow. For high-quality recordings, it is no


longer enough to consider resolution and pixel density. Therefore, professionals in the electronics industry must carefully evaluate both resolution and frame rate when selecting a digital microscope for video recordings. While 4K has become an industry standard, the frame rate is still greatly underestimated by many. A frame rate of 60 frames per sec- ond (FPS) with very low latency is essen-


tial to ensure analysis of objects that are moving are not compromised, offering a valu- able asset for optimizing processes, trou- bleshooting issues, and enhancing overall production efficiency. Nevertheless, many digital microscopes


Continued on next page


See at IPC APEX, Booth 3849


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