EXFO FG-750 - Manual (Page 15)

Fiber Guardian 1
1 Introducing the FG-750 Fiber
Guardian
The FG-750 Fiber Guardian is a stand-alone RTU (remote test unit) based
on the Link-Aware™ technology which allows dense, scalable, and
meaningful testing from the node or central office. Placed at an installation
site, the RTU directly controls the measurements. This product can operate
in the Link-Aware™ mode and in the OTDR monitoring mode.
The FG-750 is capable of standard iOLM (intelligent optical link mapper)
testing through an API (REST services) fully documented and available
standard with the product. EXFO Link-Aware™ technology was enhanced
with this product to test through splitters with the help of HRD
(high-reflectance demarkation) filters, that provide the discrimination
required to be able to measure and monitor attenuation of a specific
branch of a P2MP (point-to-multipoint) line.
Various applications are possible:

On-demand troubleshooting of P2P (point-to-point) and P2MP fiber
lines

Attenuation testing with HRD (termination filters) mainly in PON
(passive optical network)

Pass-fail testing on the transport fiber at time of installation

Certification testing up to the customer port or drop terminal port

Preventive maintenance testing and detection/localization of water
intrusion or other slow varying phenomenon.