SEMIKI-ICT specialized PCB ICT testing machine is designed and developed by engineers with many years of experience. SEMIKI supplies large electronics factories such as Panasonic and Hitachi. The SEMIKI PCB ICT functional tester is suitable for the common PCB testing needs of electronics manufacturing plants. Semiki PCB ICT system integrates customization according to each customer's different board model.
PCB board testing equipment/system; English name PCB In-Circuit Testing, abbreviated as ICT machine.
In-circuit testing (ICT) is a common method for testing electronic components and connections on a printed circuit board (PCB) to ensure that they are operating properly. This method is often performed early in the manufacturing process to detect and correct any problems before defective products are shipped to customers.
ICT testing involves connecting the PCB to specialized test equipment, which places probes or pins at key test points on the circuit board to measure parameters such as resistance, capacitance, inductance and short circuits, as well as check that electronic components are installed and connected properly. By doing so, the ICT system can detect manufacturing and assembly errors, ensuring that the PCB will function properly.
Although ICT testing is an effective way to detect problems with PCBs, it also has limitations, such as not being able to detect errors within components or test component performance. Therefore, other testing methods such as functional testing or system testing are often required after ICT testing to ensure the integrity and reliability of the PCB.
ICT testing is often performed using specialized testing equipment called ICT testing equipment or ICT testing machines. ICT testers have multiple probes or pins and can simultaneously test multiple test points, and can be programmed and configured based on different testing needs. SEMIKI-ICT Series is a specialized product system applied in electronic equipment production lines.
ICT inspection offers the benefits of speed, reliability and accuracy, being able to detect most manufacturing and assembly defects. It can detect problems early in the manufacturing process and ensure that the PCB will function properly. However, it also has limitations and is often combined with other testing methods to ensure PCB integrity and reliability in modern electronics manufacturing.
Set up and operate an ICT testing system
The core components of an ICT system typically consist of several modules that work together to automate the testing of components, soldering, and circuitry. Typically, these components include a control system, a test fixture, and test software.
Main Components of ICT Testing Machine
Test head contains electronic components for signal generation and measurement.
Interface board to route these signals to the PCB.
Control software to manage test sequences and analyze results.
Electricity supply
User interface to control operations
Built-in self-diagnostic capabilities to ensure the accuracy of testing
Protection and switching system to isolate PCB components during testing
Data collection and reporting tools for quality control and process improvement
An integral part of ICT is the Bed-of-Nails (BoN) fixture.
The main purpose of a Bed-of-Nails Fixture is to establish electrical contact with various test points on a circuit assembly for testing. This contact allows measurement of electrical characteristics, such as continuity, resistance, capacitance, and inductance.
A Bed-of-Nails jig is a rigid flat plate, usually made of aluminum or other durable material. This plate has many spring-loaded pins or probes, like nails are attached, so it is called a “Nail Bed”. These probes are precisely aligned with test points on the PCB, ensuring consistent and safe contact. Test fixtures are often custom designed for each PCB assembly.
After placing the PCBA in the fixture, the inspection system activates the fixture and begins the inspection process.
Semiki has many years of experience in researching and designing measurement solutions in the electronics manufacturing industry. The PCB circuit testing system developed by Semiki is a combination of many different components and technologies.
Requirements Analysis – Identify testing objectives and PCB specifications: Understand the testing objectives, including the types of errors to be detected (short circuits, open circuits, component failures, etc.). Collect all relevant information about the PCB, including circuit diagram, component layout, and electrical characteristics.
Design Planning – Determine hardware and software requirements: Prepare a list of hardware and software requirements to ensure proper testing capabilities.
Hardware Design
Test Head:Circuit design for signal generation and measurement; Choose the right sensors and measurement equipment.
Interface Board:Designed to route signals to and from the PCB.
Electricity supply: Select the appropriate power source to power the test components.
Bed-of-Nails Jigs:Design jigs to suit specific PCB layouts. Make sure the fixture can contact all test points on the PCB correctly and safely.
Software Development
Control Software: Software development to manage test sequences and analyze results.
User Interface (UI): User interface design to easily control and monitor the testing process.
Self-Diagnostic Software: Built-in self-diagnosis capability to ensure test accuracy.
Data Collection and Reporting: Develop data collection and reporting tools for quality control and process improvement.
Fabrication and Assembly
Manufacturing of Components: Machining and manufacturing components such as jigs, interface boards, and test heads.
System Assembly: Assemble components together to form a complete system.
Testing and Calibration
Initial Inspection: Perform initial tests to ensure all components function properly.
Correction: Calibrate the system to ensure test accuracy and reliability.
Test Program Development and Testing
Programming Test: Develop test program based on circuit diagram and PCB characteristics.
Test: Perform test runs on PCB samples to ensure the test program operates correctly.
Evaluation and Improvement
Result evaluation: Evaluate test results to identify any errors or problems.
Improve: Make necessary improvements to enhance the performance and accuracy of ICT machines.
Deployment and Maintenance
System deployment: Deploying ICT systems into production processes.
Training and Support: Train operating staff and provide technical support.
Maintenance: Perform periodic maintenance to ensure the system operates stably.
Highlights of PCB-ICT machines distributed by Semiki:
Function tester Semiki-ICT This device is suitable for common PCB testing needs at electronic manufacturing factories today.
Semiki-ICT system integrates customization according to each different board model of the factory.
The Semiki-ICT system is optimized, integrated and compactly packaged, suitable for flexible movement within the manufacturing plant.
The equipment components in the ICT system are selected appropriately by Semiki and calibrated before use.
SYSTEM FEATURES
+ Modular design for easy connection or disassembly: fixture, control box, display screen
+ Fixtures and fixtures (farm) are designed according to drawings, anti-static materials, sturdy, easy to move.
+ Simple control and operation, Semiki engineers will provide detailed instructions to the device operator.
+ High performance thanks to the powerful processing speed of the microprocessor and quality measurement devices.
+ Made from components that ensure quality and functionality from major brands such as National Instruments (NI), Hioki, Dell...
Image: The ICT Ministry checks the printer circuit board (printer)
Image: Main-Fixture set designed and manufactured from Semiki
Image: used measuring devices from quality manufacturers
SEMIKI-FCT SOFTWARE FEATURES
+ Control and monitor the entire operating process of the FCT function tester
+ Create a new test program or use existing program files in the pre-made Semiki library.
+ Integrated Barcode Reader function to automatically access program files and manage tested products.
+ Complete and accurate data management, allowing Log File export of test results and reports.
+ Operates intelligently through two Auto and Manual modes on pre-programmed software.
+ The programming steps are simple and easy to use
CHECK FUNCTION OF SEMIKI-ICT MACHINE
Check for Short and Open Circuits
Short Circuit Detection: Check if there are any short circuits between circuit lines.
Open Circuit Detection: Check if there are any open circuits between circuits or components.
Checking Electronic Components
Resistors: Measure resistance value to ensure correct specifications.
Capacitors: Check capacitance value and discharge capacity.
Inductors: Measure inductance value.
Diodes: Check voltage drop and ensure correct operation.
Transistors: Measure parameters such as current amplification factor.
Integrated Circuits (ICs): Check the function and connection of integrated circuits.
Led light: Check the lighting function and operating voltage.
Connectors: Check continuity and correct connection.
Switches and Relays: Check open/close function and continuity.
Fuses: Check continuity and make sure fuse is not blown.
Oscillators and Crystals: Check operating frequency.
Transformers: Measure voltage and ensure proper operation.
Measuring Voltage and Current
Voltage Level: Measure the voltages at different points in the circuit to ensure they are within the allowable range.
Electric: Measure the current through components to ensure they operate within allowable limits.
Digital Signal Testing
Logic Level: Test high and low logic levels to ensure digital components function properly.
Clock Signals: Check the frequency and stability of the clock signals.
Analog Signal Testing
Same signal: Test the analog signals from the sensor or amplifier to ensure they operate correctly.
Boundary Scan Check
IEEE 1149.1 (JTAG): Use the JTAG protocol to test the connections and functions of ICs that support this standard.
Device Programming and Configuration
Microcontroller and PLD Programming: Configure programmable devices with required software or parameters.
Firmware Update: Load firmware into devices to ensure they operate properly.
Custom Check
Customized Testing Process: Develop special testing procedures to meet specific customer requirements.
Data Collection and Analysis
Data Collection: Record test results for analysis and reporting.
Trend Analysis: Use data to identify trends and improve manufacturing processes.
Quality report: Generate detailed reports on the condition and performance of tested PCBs.
Diagnosis and Self-Testing
Error Diagnosis: Identify and report the location and type of errors on the PCB.
Self check: Self-checking system to ensure the accuracy and reliability of measurements.
Maintenance :
► Please re-calibrate after use for a certain period through our purchase store. Local Vietnam : SEMIKI CORP
