This corresponds the difference between the near end crosstalk attenuation (NEXT) and the attenuation the LINK.
Fibre optic
Decibel [dB]
Decibel indicates the relation between received Signal (U2) and transmitted Signal (U1). The result factor[dB]. The integrated parts are real category which provides the possibility create open “mix match” cabling systems without compatibilitiy test restrictions for the used patchcords, test adapters active networking devices.0 100.
Accessories
Dielectrical constant (DK)
The Dielectrical constant material constant the dielectric.0 2.2 0.0 40.Technical terms used data cable technology
Communication technology
ACR (Attenuation crosstalk ratio)
A factor, important the transmission characteristic the distance between the wanted signal and the interfering signal, called ACR. Due the skin effect the conductor resistance increases with frequency.0 80.0 60. ensure faultless transmission, the interfering signal caused the crosstalk attenuation must smaller certain factor.
. behaves linearly with cable length.
U2/U1 [dB] 0.
Copper screened
Attenuation (signal attenuation, conductor attenuation)
The attenuation depends the conductor resistance and the mutual capacitance and rises roughly MHz with the root the frequency on, increases linearly with the length.1 0. The term ”alien“ arises from the fact that this form crosstalk occurs between different cables group bundle, rather than between individual wires circuits within single cable.9 1.0 0. the dielectrical constant multiplied the the empty room, then the result the the dielectric.
Copper unscreened
Conductor resistance (resistance per unit length R‘)
The resistance per unit length includes the losses the metallic conductors.0 Received Signal [%] 100 98,8 97,7 90,1 89,3 79,4 U2/U1 [dB] 4. ACR [dB] NEXT [dB] [dB]; Attenuation)
Alien Crosstalk
Alien crosstalk (AXT) electromagnetic noise that can occur cable that runs alongside one more other signal-carrying cables. The relative permittivity says how much bigger the capacity the condenser becomes, instead air the insulant used dielectric.0 Received Signal [%] 0,1 0,01 0,001
Systems
In expression: U2/U1 [dB] log10 (U2/U1)
De-embedded
The De-Embedded Testing method for connecting hardware and components provides combinations with all defined quality classes for the RJ45 connectors.0 20. The conductor dimensions, the conductor material and the temperature determine the resistance Ro.
Informations
U-276
Copper
Technical changes reserved
