Lw215_01g_oi_e.doc / Apr-16
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3.3.
Optical Connections
For connection of the modules a cord set of multimode optical fiber cables assembled by
motrona can be used. Alternatively any multimode optical fiber cable 50/125 µm or 62.5/125
µm will be suitable.
Single-mode optical fiber cables cannot be used.
Please keep the dust protection covers of the optical transmitters and receivers, and put them
back in place when no optical fiber cable is connected to the modules, in order to avoid any
soiling by dust or any other substance.
Make sure here that the connector of the optical fiber cable is correctly in place
and that the bayonets catch is locked.
It must also be noted that the ST connector in use is indexed and has an
orientation spigot which must engage the slots of the optical emitter and of the
optical receiver. Please never force!
4.
LED Function
The green control LED of the transmitter must be on when the modules are connected correctly
by means of a proper cable. The green LED of the receiver must also be on.
If the LED of the module is not on, make sure that the supply voltage is applied and that it is
connected with the right polarity.
If the LED of the receiver module blinks, the optical fiber cable is not connected or broken.
