# Inline system for testing multiple printed circuit boards > Source: https://mcd.site team.de/en/industries/automation-industrial/inline-system-for-testing-multiple-printed-circuit-boards/ > Last updated: 2026-10-05 --- Inline system for # Testing Multiple Printed Circuit Boards [Learn More](#) ![](https://mcd.site team.de/wp-content/uploads/2026/06/36562462d45f78734a482141867519de-910x1024.png) ## MCD Elektronik's inline system enables the efficient, asynchronous testing of multiple printed circuit boards in modern production environments. Up to four PCBs can be tested in parallel, making it ideal for applications in the automotive industry and Industry 4.0. Thanks to its robust, robotics-ready design and flexible interfaces, the system integrates seamlessly into automated production lines and increases throughput and process reliability. ## Challenges and Concept ![](https://mcd.site team.de/wp-content/uploads/2026/07/IMG_7631-scaled.jpeg) ![](https://mcd.site team.de/wp-content/uploads/2026/06/Group_30131.svg) MCD Elektronik’s inline system enables the asynchronous testing of up to four printed circuit boards simultaneously, making it ideally suited for modern Industry 4.0 manufacturing processes. Designed for demanding applications in the automotive and electronics industries, the system offers impressive flexibility, scalability, and a fully automatable testing process. Thanks to wide-opening, pneumatically controlled devices, the system can be easily integrated into robotic cells and automated production lines. Seamless integration into existing test environments is possible through standardized interfaces to the production line (e.g., ModBus, ProfiNET, OPC) as well as modular test and adapter technology. The system supports a wide range of test procedures, from voltage, current, and resistance measurements to communication and signal tests (e.g., Wi-Fi, GPS, Bluetooth, AM and FM audio). As a result, the system is particularly well-suited for automated quality testing of complex printed circuit boards in high-volume environments. It increases test throughput, ensures reproducible defect detection, and sustainably improves process reliability in networked Industry 4.0 production environments. ## Scope of Testing and Functionality ![](https://mcd.site team.de/wp-content/uploads/2026/06/Group_30131.svg) The inline test system from MCD Elektronik was specifically developed for the automated testing of complex printed circuit boards in modern manufacturing environments. It enables the parallel and asynchronous testing of up to four test specimens, thereby ensuring significantly higher throughput in electronics production. Thanks to the combination of robust mechanics, pneumatically controlled opening systems, and modular adapter technology, the system can be flexibly integrated into existing production lines. Especially in the context of Industry 4.0, users benefit from easy integration with automated processes and robotic solutions. Standardized communication interfaces such as Modbus enable reliable integration into higher-level control systems. This results in a highly flexible testing system that is suitable for both manual applications and fully automated, robot-assisted manufacturing processes. ## Test Methods Used and Results ![](https://mcd.site team.de/wp-content/uploads/2026/06/Group_30132.svg) The inline system is primarily used for in-line testing of electronic control units and printed circuit boards in the automotive and electronics industries. Typical applications include infotainment systems, communication modules, and complex control units that must meet the highest quality standards. The system supports a wide range of test procedures, including voltage, current, and resistance measurements, as well as functional and interface tests for Wi-Fi, Bluetooth, GPS, and GNSS. In addition, communication protocols such as CAN, LIN, and OABR can be tested, and flashing processes and display interfaces can be integrated. Test throughput is significantly increased through the parallel, asynchronous testing of up to four test specimens. The modular design and easy integration into automated and robot-assisted production lines make the system particularly flexible for Industry 4.0 environments and high-volume manufacturing processes. ## FREQUENTLY ASKED QUESTIONS ### FAQS How does the inline testing system for printed circuit board inspection work? The system enables the asynchronous testing of up to four printed circuit boards simultaneously. This significantly speeds up testing processes in electronics manufacturing and makes them more efficient. For which applications is the inline testing system suitable? Das System ermöglicht die asynchrone Prüfung von bis zu vier Leiterplatten gleichzeitig. Dadurch werden Prüfprozesse in der Elektronikfertigung deutlich beschleunigt und effizienter gestaltet. What tests can be performed? Das System ermöglicht die asynchrone Prüfung von bis zu vier Leiterplatten gleichzeitig. Dadurch werden Prüfprozesse in der Elektronikfertigung deutlich beschleunigt und effizienter gestaltet. Is the system suitable for Industry 4.0 and automation? Das System ermöglicht die asynchrone Prüfung von bis zu vier Leiterplatten gleichzeitig. Dadurch werden Prüfprozesse in der Elektronikfertigung deutlich beschleunigt und effizienter gestaltet. How flexible is the testing system? Das System ermöglicht die asynchrone Prüfung von bis zu vier Leiterplatten gleichzeitig. Dadurch werden Prüfprozesse in der Elektronikfertigung deutlich beschleunigt und effizienter gestaltet. Can the system be integrated into existing production lines? Das System ermöglicht die asynchrone Prüfung von bis zu vier Leiterplatten gleichzeitig. Dadurch werden Prüfprozesse in der Elektronikfertigung deutlich beschleunigt und effizienter gestaltet. ![](https://mcd.site team.de/wp-content/uploads/2026/05/Multiple-Layers-1.webp) ## KEY FACTS Test Procedures & Scope of Testing ### Parallel, Asynchronous Testing ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### up to 4 circuit boards at the same time ### Testing Procedures ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### including: voltage, current, resistance, frequency, and functional tests ### Testing Communication Interfaces ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### such as USB, CAN, Bluetooth, Wi-Fi ### Support from ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### Flashing and programming processes for assemblies Production Integration & Throughput ### Use in ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### automated in-line production lines ### Integration into Production Lines ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### with a focus on high throughput and 24/7 production Applications & Scalability ### Used worldwide in ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### Automotive and Electronics Production Lines (Mass Production) ### Modular System Design ![](https://mcd.site team.de/wp-content/uploads/2026/05/Group-2147226339.svg) ### for scalable testing and automation solutions [DOWNLOAD Press Release](https://mcd.site team.de/wp-content/uploads/2026/07/MCD-Elektronik_fachartikel_inlinesystem-multiplepcbtesting_mcd.pdf) Learn more directly from the press release ## REFERENCE PROJECTS [![](https://mcd.site team.de/wp-content/uploads/2026/07/EOLT-robot-cell_mcd-02-2-scaled.png)](https://mcd.site team.de/en/industries/automation-industrial/eolt-robot-cells-for-multiple-testing-of-haptic-components/) EOLT Robotic Cells for Multiple Testing of Haptic Components [![](https://mcd.site team.de/wp-content/uploads/2026/07/INLINE-SYSTEM-mechatronic-components_mcd-003-1-scaled-e1788862608472-1024x946.png)](https://mcd.site team.de/en/industries/automation-industrial/in-line-testing-system-for-mechatronic-components/) In-line testing system for mechatronic components [![](https://mcd.site team.de/wp-content/uploads/2026/07/vts-2030_automated-with-robot_mcd-002-1-1024x683.png)](https://mcd.site team.de/en/industries/automation-industrial/vts-2030-with-robotics-for-automated-testing-systems/) VTS 2030 with Robotics for Automated Testing Systems ![](https://mcd.site team.de/wp-content/uploads/2026/05/Multiple-Layers-1.webp)