Circadiant's 10 Gigabit Ethernet Long Reach Multimode Test System

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Сircadiant Systems has announced the release of its Hydra Modular Test System - the industry’s first commercially available 10 Gigabit Ethernet LRM (Long Reach Multimode) compliance test system. Hydra is a comprehensive test system that enables quick, easy and accurate compliance testing of 10 Gigabit components (such as electronic dispersion compensators), devices and systems per the IEEE 802.3aq draft standard. The all-in-one solution solves the issues of calibration, instrument drift, and system-to-system correlation.

The LRM interface, defined in the latest 802.3aq draft standard, was conceived to allow 10 Gigabit Ethernet transmissions over the existing FDDI multimode fiber that populates most corporate complexes, and accounts for over 60% of the installed fiber. To ensure reliable transmission, with up to 220 meters of varying degrees of installed fiber quality, the IEEE Standard requires Ethernet component and system manufacturers to make complex optical transmitter and receiver performance measurements. Compliance to the Standard is critical to maintain the Ethernet "plug and play" architecture and to assure high-quality transmission over legacy fibers. Circadiant’s new Hydra Modular Test System makes critical Ethernet LRM compliance testing fast and easy.

Hydra tests all physical layer aspects of the 802.3aq LRM Standard, including Stressed Receiver Sensitivity and Transmitter Waveform Dispersion Penalty (TWDP). Hydra generates standard compliant stressors to mimic worst-case optical degradations while automatically measuring receiver bit error ratio performance as a function of output power. Hydra also automates TWDP testing through an external high-speed sampling scope for the transmitter portion of the standard. Hydra makes accurate LRM compliance testing fast and easy by combining receiver and transmitter test functions.

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