The CPK (Process Capability Index) is a statistical indicator used to measure how well a process is performing in relation to its tolerance specifications. It shows whether the process is centered and stable enough to produce within the acceptable limits defined by the design or standard. Why is CPK important?
KPIs (Key Performance Indicators), or Key Performance Indicators, are metrics used to monitor and evaluate the performance of industrial processes, quality tests, production lines, and even technical teams. They allow for data-driven decisions, identify bottlenecks, optimize processes, and ensure continuous improvement — one of the pillars of success in modern
Measurement is the technical process of quantifying a physical, chemical, or logical quantity by comparing it with a known standard. It is the basis for validating products, processes, and systems — ensuring quality, safety, traceability, and regulatory compliance in industrial, laboratory, and clinical environments. In practice, there is no reliable
The validation of a product or system requires different types of tests, depending on its application sector. Each segment has its own criteria for compliance, traceability, and technical requirements. Below, we detail the most common types of tests organized by sector, based on the practical experience of AJOLLY Testing. 🏭
The Pareto chart is a statistical tool used to identify and prioritize the main causes of failures in a process. It is based on the Pareto Principle (80/20), which states that about 80% of problems come from 20% of causes. When applied to test engineering and production, the Pareto allows
The FPY (First Pass Yield), or First Pass Yield, is a fundamental indicator of efficiency and quality of a testing or production process. It measures the percentage of units that pass the test on the first attempt, without the need for rework, repetition, or correction. Why is FPY important? FPY
In the context of electronic board production (PCBA - Printed Circuit Board Assembly), the test jig is an essential equipment used to validate the electrical and functional operation of products during manufacturing. Definition of Test Jig A test jig (also called "test jig", "test fixture", or "test fixture") is a
Understand Fiber Optics to the Home FTTH (Fiber To The Home) is a network architecture where the fiber optic goes directly from the operator's central office to the user's home or business, without passing through metallic or coaxial means. It is considered the most modern and efficient form of fixed
Understand Internet Technology via Telephone Line DSL (Digital Subscriber Line) is a family of technologies that enables high-speed digital data transmission over copper telephone lines without interfering with traditional voice service. It is an alternative to cable access (DOCSIS) or fiber (GPON), especially in areas where telephone infrastructure already exists.