2.2 Handling instructions for optical connectors

• Do not allow any kind of dust or dirt on the fibre.
• Do not touch the fibre! Otherwise you will get optical attenuation and the opposite fibre in the corresponding connector will be contaminated as well.
• When installing or changing optical connections, ensure that the environment of the room where the unit is installed is as dust-free as possible.
• If you install the unit on-site, make sure that the complete work that causes dust (e.g. plastering or concreting) is already finished and the resulted dust is cleaned up properly.
• Remove the fibre protection cap of FC/APC connectors just before you connect the optical connector.
• Store the protection caps in a closable box that is absolutely dirt- and dust-free.
• After disconnecting a fibre, put a dirt- and dust-free protection cap into the connector in order to avoid dust contamination.
• Before connecting, we strongly recommend to clean the fibre. We recommend to use clean compressed air spray like e.g. 'Kontakt 334' or a special cleaning device like e.g. 'CLETOP' or 'one click cleaner'. Do not use compressed air produced by a standard air compressor, this air is not clean enough! If a dirty fibre (e.g. contaminated with dust) is connected to a LFTRX unit, the internal fibre of the LFTRX unit will be contaminated as well and you will get optical attenuation. In the worst case, the fibre-end might be irreparably damaged and has to be replaced.You always have to consider: optical attenuation causes a twice RF-signal attenuation! So e.g. an optical attenuation of 2dB causes 4dB RF signal attenuation.