14
Splice with ohmic asymmetry
For the splice with an active asymmetry component it is possible to create an equivalent
circuit:
There is possible a localization of a faulty contacts in the splice from 0,7 Ohm for the cable
of 3
rd
category (instead of 70 Ohm of usual hookup). For the cable of 4
th
category – from 0,1
Ohm.
Leakage
The insulation fault can cause the cable pair misbalancing, if there is damaged the one wire in
the cable pair (the leakage on the shield or on the wire of another pair).
The expected limit of leakage de
fi
nition is increasing for the cable: of Category 3 from the
value 110 Ohm up to 11 kOhm, of Category 4 from 40kOhm up to 50 kOhm.
Example
We are use the IRK-PRO GAMMA device in the mode of DSP TDR with the following
hookup:
