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Parallel Test Systems
Scalable and flexible testing for complex board assemblies
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Boundary Scan Analyzers
Efficient fault isolation with pin-level precision
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Functional Test Systems
Integrated functional test system for reliable production results
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In-Circuit Test Systems
Precision fault detection for high-density boards
Parallel Test Systems
Keysight Parallel Test Systems provide versatile and scalable solutions for diverse manufacturing test requirements. The Advanced model offers a compact, cost-effective platform for mixed-signal PCB testing with built-in analog, digital, and boundary scan capabilities. It simplifies test development and integration, making it well-suited for lean production environments. The Expert model delivers unmatched throughput for demanding applications with thousands of simultaneous test channels, modular architecture, and comprehensive coverage, including in-circuit, boundary scan, and functional tests. This system excels in high-mix and high-volume manufacturing, providing fast diagnostics and seamless automation integration. Explore our wide range of parallel test systems from advanced to expert performance levels to find the one that is right for your application. Need help selecting? Check out the resources below.
Advanced
Expert
Boundary Scan Analyzers
Keysight boundary scan analyzers deliver advanced digital test capabilities for high-density boards, enabling precise fault isolation without requiring physical probe access. The system is designed for efficient structural testing and provides fast diagnostics of interconnects, shorts, opens, and stuck-at faults across complex digital assemblies. With seamless integration into in-circuit and functional test systems, boundary scan supports JTAG-based scan chains. It enables access to hard-to-reach nets, reducing test development time and improving coverage. Explore our boundary scan to find the one that is right for your application. Need help selecting? Check out the resources below.
Functional Test Systems
Keysight functional test systems offer a modular, flexible solution for testing complex electronic assemblies. With precision measurement, high-density switching, configurable power delivery, and synchronized signal acquisition, the system supports a wide range of analog, digital, and mixed-signal applications. Built-in automation and real-time monitoring streamline test development and improve coverage, making it ideal for validating devices like automotive ECUs, industrial controllers, and embedded boards. Explore our wide range of functional test systems to find the one that is right for your application. Need help selecting? Check out the resources below.
In-Circuit Test Systems
Keysight in-circuit test systems provide high-performance, scalable solutions for testing complex, densely populated printed circuit boards in high-volume manufacturing. With flexible pin configurations, boundary scan support, vectorless test capabilities, and programmable analog measurements, these systems ensure fast and accurate detection of assembly faults such as solder defects, misoriented components, and wrong values. Built-in diagnostics, intuitive test development tools, and automation-ready integration streamline production workflows while reducing false calls and improving first-pass yield. Explore our wide range of in-circuit test systems to find the one that is right for your application. Need help selecting? Check out the resources below.
Driving confidence in automotive electronic testing
Automotive electronics require precise and comprehensive testing to ensure reliability and safety. Keysight in-circuit test systems offer key features like low-current measurements, supercapacitor testing, LED diagnostics, and fast shorts detection, which are ideal for modules such as ECUs, engine controllers, and sensor boards. High-throughput solutions efficiently test compact boards in parallel, while boundary scan tools enhance coverage for inaccessible nodes. Together, these tools ensure performance and quality across high- and low-complexity automotive electronics.
Explore compatible software and accessories for your in-circuit test for manufacturing solution
Choose from a wide range of in-circuit test software for streamlined test program generation, advanced fault diagnosis, and enhanced test coverage. Complement your ICT system with accessories such as fixture kits, probe modules, boundary-scan tools, cable assemblies, sensor plate, single probe, and more.
Explore in-circuit test for manufacturing use cases
In-circuit test for manufacturing support a wide range of testing across various industries, discover them all.
Manufacturing
How to Perform Low-Current Measurements on PCBAs
Integrate a source measure unit into the in-circuit tester.
Manufacturing
How to Integrate an In-Circuit Tester Into Industry 4.0
In-circuit tester and IPC-CFX enable Industry 4.0 factories.
Manufacturing
How to Speed Up Short Testing for High-Impedance Nodes
Implement the enhanced short test algorithm in an in-circuit test system to improve test time for short tests.
Services and support
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Ensure your test system performs to specification and meets local and global standards.
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Frequently asked questions
In-circuit testing (ICT) is critical in verifying a printed circuit boards (PCB) electrical and structural quality immediately after the assembly stage. It ensures that every component, such as resistors, capacitors, diodes, and ICs, is correctly placed, oriented, and soldered to the board. This includes checking for open circuits, short circuits, missing or wrong components, and faulty solder joints. By identifying these defects before power is applied, ICT reduces the risk of damaging components and prevents faulty boards from progressing further in the production line. This proactive testing approach improves yield and product reliability and significantly lowers repair and rework costs, contributing to more efficient and dependable manufacturing operations.
In-circuit testing (ICT) and functional testing serve different purposes in the PCB manufacturing process. ICT is performed on an unpowered board using a bed-of-nails fixture or flying probe system. It electrically isolates each component to test for correct placement, orientation, value, and solder integrity. This test quickly identifies structural defects such as opens, shorts, incorrect components, and solder issues before power is applied, minimizing risk and repair cost.
Functional testing, on the other hand, is performed after ICT and powers up the board to simulate its actual operating environment. It validates the board's behaviour, checking that inputs and outputs respond correctly, microcontrollers execute code, and system-level functions perform as expected. This test verifies performance, timing, and interaction between components, which ICT cannot detect.
In short, ICT ensures the board is built correctly, while functional testing ensures it works correctly. Both are complementary and often used in tandem to ensure high test coverage and reliable product performance.
Absolutely. In-circuit testing (ICT) is specifically designed to support high-volume manufacturing environments. It offers rapid, repeatable, and automated testing, making it ideal for lines producing hundreds or thousands of printed circuit boards (PCBs) daily. Test fixtures are designed for quick and secure board loading, while automated software sequences control the testing process with minimal human intervention. Typical test times range from a few seconds to under a minute per board, enabling fast throughput. Its high fault coverage and consistent results ensure production efficiency and product quality at scale.
Modern PCBs are becoming increasingly complex, with higher component densities, smaller form factors, and the widespread use of surface-mount technology (SMT) and multilayer designs. These trends limit physical test access, fewer test pads are available for probes, and densely packed components make fixture design more challenging. Additionally, ICT cannot effectively test programmable devices, encrypted ICs, or components with limited or no electrical access (e.g., BGAs or embedded passives). As a result, ICT often needs to be complemented by boundary scan or functional testing to achieve complete coverage.
In-circuit testing (ICT) enhances manufacturing quality by detecting assembly defects early in production, before power is applied to the board. By verifying components' correct placement, orientation, and electrical integrity, ICT prevents latent defects that could cause intermittent failures in the field. Its automated, repeatable nature ensures consistent inspection across high-volume production, reducing variability. By identifying missing components, solder bridges, and wrong values, ICT helps maintain product reliability, lowers rework rates, and contributes to higher yield and customer satisfaction.