Which term measures crosstalk at the far end due to signals on other pairs?

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Multiple Choice

Which term measures crosstalk at the far end due to signals on other pairs?

This question is about far-end crosstalk in copper cabling. The term that describes crosstalk at the far end caused by signals on other pairs is FEXT. It’s measured by injecting a signal on one pair and detecting the unintended signal that appears on a distant pair at the far end, with the result typically expressed in decibels to show how much interference can reach the far end over the cable length. To contrast briefly: NEXT is measured at the near end, capturing crosstalk at the source end. ELFEXT is a normalized version of FEXT that accounts for the transmitted signal level so comparisons are fair across different tests. Return Loss, on the other hand, relates to reflections due to impedance mismatches and is not a measure of crosstalk.

This question is about far-end crosstalk in copper cabling. The term that describes crosstalk at the far end caused by signals on other pairs is FEXT. It’s measured by injecting a signal on one pair and detecting the unintended signal that appears on a distant pair at the far end, with the result typically expressed in decibels to show how much interference can reach the far end over the cable length.

To contrast briefly: NEXT is measured at the near end, capturing crosstalk at the source end. ELFEXT is a normalized version of FEXT that accounts for the transmitted signal level so comparisons are fair across different tests. Return Loss, on the other hand, relates to reflections due to impedance mismatches and is not a measure of crosstalk.

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