An optical time domain reflectometer (OTDR) is a precision instrument used to locate events or faults along a fiber link, typically within an optical communications network.
Type: Handheld or portable OTDR
Primary Function: Measures the length, attenuation, and faults (such as breaks or splices) in fiber optic cables.
Wavelengths: Common test wavelengths include 1310 nm and 1550 nm (single-mode).
Dynamic Range: Often between 26 dB to 40 dB depending on the model.
Event Dead Zone: Typically low (e.g., ≤1m), allowing for accurate detection of closely spaced events.
VFL Function: Many models include a Visual Fault Locator.
Data Storage: Internal memory and support for USB export.
Display: Color touchscreen or LCD for viewing fiber traces.
Power: Rechargeable lithium battery for field use.
Installation verification of new fiber links.
Routine maintenance for service providers.
Troubleshooting signal loss or breaks in FTTx, LAN, and backbone networks.
