Delay and physical error injection tool operating in series with any fiber-optic link
X-STEP™ Intruder is a physical-layer latency and error injection tool used for modeling real-life cable connection distances and signal degradation to test the robustness of a radio base station system. X-STEP™ Intruder buffers and delays link traffic from 10 µs up to few seconds at one microsecond granularity, where 1 µs corresponds to approx. 204 meters (670 ft) in fiber-optic cable length. Optionally, the Intruder system can also inject pseudo-random physical layer errors, i.e., line code violations, in the delayed traffic according to desired bit/error ratio (BER) target. For BER modeling, X-STEP™ Intruder supports ascending and sweeping modes where the effective BER slowly increments from zero to the target value or sweeps between zero and target BER during a given time period. All Intruder features can be controlled through an easy-to-use GUI or via test automation scripts.