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Ensuring Proper Functioning Of Printed Circuit Boards



Before the printed circuit boards came into existence components in a circuit were manually soldered to wires and fixed on the circuit board. This makes the process of completing a circuit board very time-consuming. Each component had to be soldered manually. With the printed circuit board, the copper tracks are already embedded on the circuit board. Only the components need to be soldered to the board to complete the circuit. The fixing and soldering of the components are also done by machines. But the performance of the circuit boards must be tested and this is where the Medalist i1000 comes in as the best test equipment available.

Understanding In-Circuit Testing

In-circuit testing is performed on PCBs to know whether all the components on the board are functioning properly. Sometimes there can be connection failure between the components. Some components may not be connected properly. There may even be wrong components that are attached to the printed circuit board. All these will result in the failure of the appliance or device in which the PCB is attached. This was testing of each component becomes important.
The in-circuit test equipment has a bed of nails which can connect to different points on the printed circuit board. This will help to measure the performance of each of the component fixed to the board. Various parameters like resistance, capacitance, etc. are measured by the in-circuit testing equipment. The test helps to find all the faults that are on a PCB be like short circuits, open circuits, and faulty components.

The Main Elements Of In-Circuit Testing
The in-circuit testing process includes three entities mainly. They are equipment, fixture, and software. The equipment or the tester consists of thousands of drivers and sensors which are used for performing the testing. They are connected to a large connector in the equipment. The fixture is the bed of nails that connect to various points on the PCB. As different circuit boards have different components and patterns, these fixtures need to be configured for each board.
The configuration of the fixture is a service offered by many companies in Singapore. They will configure the fixture as per the requirement of the PCB manufacture depending on what boards need to be tested. The PCB manufacturer will be making different circuits at different times and the fixture should be configured for each of these. The software is written differently for each circuit to guide the tester to perform the required tests.

The Advantages Of In-Circuit Testing

The main advantage of ICT is the testing of PCBs which is its prime function. It can test various parameters on a printed circuit board and reject those that are wrong. This is very much needed so that the appliances or gadgets using the circuit boards perform correctly. Another advantage is that the programming of the test is very easy. All you need to do is to take the board details from the board manufacturer and use it for programming.
This type of testing avoids the need for highly skilled workers. As the test will identify the correct node which is defective it is easy to identify and rectify the fault. The testing method is very quick and helps to test the boards and send them to the customers very quickly. The test has helped the PCB industry to improve their productivity.
There are different types of in-circuit test machines available in the market. The performance of these machines will also depend greatly on the configuration of the fixtures and the programming of the software.

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