CATV tester unit for fiber-to-the-home

Abstract

Fiber-to-the-home (FTTH) network system is used to transmit video, data and voice signals to users at a high speed level. Therefore, good signals are essential. Thus, to monitor the condition of the signals, a CATV tester device is needed. CATV tester device is designed to measure the CATV signals which are passing through the optical network unit (ONU) at the user's premises. A single mode optical fiber signal entering the ONU will be obtained by ‘tapping’ method and the signal then will be fed into the CATV tester unit through optical cable connection. The signals will be converted into Audio/Video signal and be fed to display panel. This tester will display the received signal on the display panel; if the signal received by the CATV tester device is accompanied by undesired signals and noises, video displayed would degrade; it will then indicate that the main (FTTH trunk line) is probably damaged and needed to be repaired.