Novel measurement method for fiber optical cable television echo rating baseband parameter at subscriber

We present a novel measurement method to measure the echo rating baseband p arameter at the subscriber. A relation between the echo rating and the in-c hannel frequency response is found from both theoretical derivations and ex perimental results. We use the in-channel frequency response rf parameter t o simultaneously indicate the echo rating performance. This proposed novel echo rating measurement method is simpler and more cost-effective than the conventional measurement method. (C) 2000 Society of Photo-Optical instrume ntation Engineers. [S0091-3286(00)00610-3].