Probe is the contact medium for PCBA test, for high-end precision electronic hardware components, belongs to the PCBA test fixture of an object.
In the PCBA test link, generally will make special test fixtures, test fixtures will be installed with the probe used to test points with the PCBA contact, and ultimately test the performance parameters of the PCBA. PCBA probe surface gold-plating is conducive to conductive enhancement of the general manufacturers usually choose the SK4 material, the internal life of an average of 30,000 ~ 1,000,000 high-performance springs, after a number of tests need to be After a number of tests need to clean the probe to ensure that the probe correctly play a role.
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Connection, connection is the key issue to pay attention to at the beginning of all the work, the probe in the connection with the circuit under test, the ground end of the probe is best to be able to realize the ground connected to the circuit under test.
In some cases, the probe's grounding conductor needs to be close to the location of the measured point, such as in the measurement of short-time pulse signals and high-frequency signals. A grounding wire that is too long can cause distortion of the waveform, thus affecting the effectiveness of the measurement.
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