Tag Archives: VFL

Fiber Optic Testers used in fiber to the X FTTx Solutions

The following is a list of optical testing tools used for FTTx (Fiber to the x) network: 1. VFL (visual fault locator) is capable continuity check fiber link up to 15km, break/bend visual identifier for fibre along patch panel/hub areas, It is mainly applied in fibre link construction and troubleshooting at locations where fibres are accessible. […]

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Test Procedures when Trouble-shooting an Live (in service) PON Network

1. Use an ONT (Optical Network Terminal) / ONU (Optical Network Unit) Tester to determine if the ONT/ONU at the subscriber’s end is responding to downstream signals from the OLT (Optical Line Terminal). The Active ONT /ONUidentifier clamps on to 0.9mm buffered fiber, or 2mm or 3 mm jacketed fiber, or 2.0mm x 3.0mm drop cable, senses and […]

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