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Short Definition

Uninterruptible Signal Processing

USP (Uninterruptible Signal Processing) is the Lenz name for the ability of a mobile decoder to pick up DCC signals from the track even when the electrical connection is interrupted by dirt, bad contacts, insulated frogs, etc. It should not be confused with an Energy Storage accessory for a mobile decoder although for USP to be effective an energy storage module is required to supply power to the decoder and the motor while the supply from the rails is interrupted.