Copper unscreened Copper Copper screened
With shielded data cable (foil and braid screen high quality, i.Advantages high performance data cables
Sensitivity external electrical and magnetic influences
The electromagnetic field unshielded data cable not limited the immediate area between the wires. Stable transmission characteristics (figure 4), usually indicated excellent Return Loss installed conditions, are the result. The electrical and magnetic fields close installed data cable are rarely uniform constant. 000 000 MHz
Figure 3
Twisted Pair shielded
CH1 lin MAG REF 100 U
low frequency
high frequency
Cor
IMPEDANZ
1: 107.37 49. Therefore, major external influences have minimal effect the transmission performance the cable (figure 2).e. The impedance path not influenced the surroundings. Wire environment installed data cable (figure 1).7307 p-p: 17. Uninet) the electromagnetic field contained within the overall shield.49 500 MHz mean: 95.69 dev: 12.199 375 MHz mean: 98.06 dev: 3.895 p-p: 74.
Twisted Pair unshielded
CH1 IMPEDANZ Cor
lin MAG
10 REF 100 U
1: 133.98 43. 000 000 MHz
Figure 4
Technical changes reserved. (figure 3).301 U
H
E Electric field Magnetic field
E
Figure 1
START 000 000 MHz
STOP 100.
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Communication technology
. For unshielded cable these fields directly effect the electrical transmission characteristics the twisted pairs.863 U
H
E H
E Electric field Magnetic field
Figure 2
Shield
START 000 000 MHz
STOP 100
