What is the strength of the interference between wire pairs to be considered qualified? How to detect? The testing method is actually very simple: the tester sends a signal to the opposite end on one pair of twisted pairs, and then detects the induced signal on the other three pairs of twisted pairs separately. Compared with the limit value (standard value) specified by the standard, as long as it does not exceed the standard, it is considered qualified FAQ: Is the crosstalk value tested a constant? Answer: Of course not. The higher the frequency, the stronger the radiation and induction ability of the line pair, so the crosstalk values corresponding to different frequencies are different. This is why the test results are drawn as a curve (the horizontal axis represents the frequency, and the vertical axis represents the intensity coefficient of the crosstalk signal in dB)
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