Transmission
standards, such the network classes according to
EIA/TIA 568A/B 50173-1, specify the maximum
NEXT values for transmission path. This effect is
known Near End Cross Talk (NEXT).
Crosstalk pairs wires
Good NEXT values
Limit values
Relevant frequency range
Poor NEXT values
Schematic diagram NEXT measurement: comparison good and poor NEXT values
TBS
Blitzschutz-Leitfaden
2018
/
en
/
2020/01/10
14:42:40
14:42:40
(LLExport_02613)
/
2020/01/10
14:42:54
14:42:54
232
Chapter The internal lightning protection system
.NEXT
Due capacitive inductive coupling, signal com-
ponents from pair wires can coupled onto an-
other pair and cause interference there. The curves be-
low show the transmission characteristics high-qual-
ity and inferior cables
