When we organize node type EPON, the figure in the camera can't be seen from the 5th ONU in backward, why?
The reason is mainly optic attenuation. For example, when we use 5/95 splitter, optic attenuation of 5% output is 14dB, 95% is 0.35dB, and optic attenuation happens after every node connection. We suggest to test optic when installing and splicing fiber, in every splice dot, splitter and flanged head, optic attenuation equals to the attenuation of these three.