Agilent Technologies N2610A user manual Return Loss, Equal Level Far End Crosstalk Elfext

9Cable Tester Reference

Measurements

Return Loss

Return Loss measures the degradation of signal over all four pairs from each end of the tested cable run.

TIA level III measurement parameter and tester accuracy requirements per TIA Category Draft – Addendum to TIA-568-B and ISO/IEC 61935-1 draft amendment 1, 10/99

Equal Level Far End Crosstalk (ELFEXT)

ELFEXT measures far end coupling between pairs in the tested cable, for all pair combinations.

TIA level III measurement parameter and tester accuracy requirements per TIA Category 6 Draft – Addendum to TIA-568-B and ISO/IEC 61935-1 draft amendment 1, 10/99

Attenuation to Crosstalk Ratio (ACR)

The ratio of the measured attenuation and the near end crosstalk (NEXT) at each frequency point.

Power Sum NEXT (PSNEXT)

Computed for each pair by calculating a power sum total of the pair-to-pair NEXT from the three other pairs.

214 Agilent FrameScope 350 User’s Manual