Communication solutions for power utilities
UNIVERSAL TELEPROTECTION TPU-1
INSTALLATION AND COMMISSIONING MANUAL Web version TPU-1R - Rev. 5.9 (May 2018)
Figure 30 Crossover cable
Figure 31 Straight-through cable
100Base-FX LAN interface
Instead of the previous interface, the TPU-1 terminal can have a 100Base-FX LAN interface
that allows advantage to be taken of the characteristics of bandwidth, noise immunity, low
attenuation, long range, etc. given by the optical fiber. The connector is on the front of the
MWTU module and is a MT-RJ.
The 100Base-FX specifications require a fiber optic cable made up of two multi-mode
optical fibers, one to transmit data and the other to receive it. Each of the fibers should be
125 μm in diameter. The core and the cladding of the fiber are included in this diameter, as
can be seen in Figure 32. The core can be 50 μm or 62,5 μm in diameter. The wavelength
used should be 1300 nm.
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