circuit board assembly

Function Test

functional-testing

Functional Testing (FCT) is a necessary process within the turn-key assembly services. Functional testing usually is applied after the circuit boards are assembled and AOI & visual inspections are finished.

Functional testing is done mainly to avoid assembly issues including shorts, opens, missing components or the installation of incorrect parts. Customers can deliver a perfect product to their clients.

Functional testers usually use a computer that is connected to test points or a test-probe point in order to perform FCT. We determine if the boards pass or fail based on whether or not the test results meet the specified requirements by operating the software or firmware.

Functional testing is enabled by testing software, often referred to as firmware, and testing instruments such as digital multimeters, input/output PCBs, communication ports. Automated computer-based Functional Testing (FCT) is accomplished by assembly line operators who utilize testing software that interfaces with external instruments to monitor the devices under test.

Early testing enable us to find and correct the component failures, assembly defects or potential design issues at an very early stage and make troubleshooting as quick as possible.
We will preview client’s requirements such as test scope and test instruction, design the test jig if necessary, set up the instruments, and prepare the test report form and design testing workflow.

Equipped with an adjustable DC power supply, a 200MHz digital oscilloscope, a signal generator, an LRC multi-meter and a universal programmer. This covers most embedded system testing. The test results can be either collected by a computer or recorded manually. If the board does not pass the testing, a troubleshooting program will be launched to find the root cause of the failure. A Design For Assembly (DFA) form will be issued by our process engineer and an 8D quality assurance report will be created by our quality engineer. The DFA report will be sent to the customer as a design reference. This will become our quality improvement guideline.

By all these processes, we serves every customer well of their products also their special design needs. This is done by communication and the chasing of perfect product by both sides.

tmliir Dec 30, 2016 Component, PCBA&SMT&PCB Assembly 0 Comment Read More
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