Trilithic has available a new FDR (Frequency Domain Reflectometer) option for its 860 DSPi Field Analyzer. The option is designed to enable installers or technicians to easily identify the distance to faults or various passive devices within the home network. Similar to a TDR (time domain reflectometer) in function, the FDR can work through in-line splitters and other frequency-limited devices and works by transmitting a sweep into the network and analyzing the compound reflected wave.

The test provides measurement of return loss at various connections within the network, including the distance to each connection. In addition to providing helpful advice to assist in locating splitters or other network components, the addition of this feature to the 860 DSPi eliminates the need for a technician to carry a separate instrument (TDR) for troubleshooting cable faults within the home network.

The option can be added to any 860 DSPi in the field that is equipped with either a VP-1 (Return Tester RSVP Option) or an SR-1 (Return Sweep Receiver Option) by updating the firmware and purchasing an activation key code. Units without one of these options must be returned to the factory to receive the upgrade.

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