000 000 MHz
Figure 4
Technical changes reserved.
U-287
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Fibre optic
Communication technology
.
Twisted Pair unshielded
CH1 IMPEDANZ Cor
lin MAG
10 REF 100 U
1: 133. The electrical and magnetic fields close installed data cable are rarely uniform constant. Uninet) the electromagnetic field contained within the overall shield.301 U
H
E Electric field Magnetic field
E
Figure 1
START 000 000 MHz
STOP 100.863 U
H
E H
E Electric field Magnetic field
Figure 2
Shield
START 000 000 MHz
STOP 100.895 p-p: 74.e.
Copper unscreened Copper Copper screened
With shielded data cable (foil and braid screen high quality, i.7307 p-p: 17. 000 000 MHz
Figure 3
Twisted Pair shielded
CH1 lin MAG REF 100 U
low frequency
high frequency
Cor
IMPEDANZ
1: 107.98 43. Stable transmission characteristics (figure 4), usually indicated excellent Return Loss installed conditions, are the result.06 dev: 3.199 375 MHz mean: 98.37 49.49 500 MHz mean: 95.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. Wire environment installed data cable (figure 1).69 dev: 12. (figure 3). The impedance path not influenced the surroundings. Therefore, major external influences have minimal effect the transmission performance the cable (figure 2). For unshielded cable these fields directly effect the electrical transmission characteristics the twisted pairs
