一．What's the meaning of ICT？
ICT is In-Circuit-Test.It is more accurately called circuit testing in electronic industry.
ICT is mainly used for electrical test of circuit board(PCBA).Regarding it as an advanced multimeter.No need to remove the electronic parts from the circuit board.You can directly detect the electrical properties of all parts on the circuit board through the probe and whether the soldering is open/short circuit problems.
二．ICT Principle of testing
ICT is to use the needle base to connect the test points fixed up on the circuit board to achieve the test purpose.Measurements must be made by placing pin points at test points extended from the contact feet of all parts.Measure resistance, capacitance and voltage.
三.What does ICT principally test？
1.Short circuit, wrong piece, missing piece, tombstoning,bridging, opposite polarity , etc.
2.Measure resistors, capacitors, inductors, diodes, regulator diodes, relays, ics, connectors and
other parts.
3.Electrical function test
4.Test the function of the active part
四.Test the advantages of pcba circuit boards
1.The test speed is fast and short
PCBA can do L/C/R/D test without powering on.
It can effectively reduce the test boot waiting time and reduce the circuit board burning accident caused by short circuit
2.Excellent retesting
Controlled by computer program, it greatly reduces the risk of misjudgment and leakage test, and reduces the trouble of production line.
3.Product maintenance costs have been greatly reduced.
Operators can be responsible for product maintenance, effectively reducing labor costs. ICT can tell where there is a problem with a part through a computer program.
4.Improve product quality
As long as there are enough test points, ICT can measure all the lines and parts on the circuit board, which can improve product quality.
5.Meet traceability requirements
ICT testing can record test results for product traceability and after-sales service.