The Broadcom AS38-H39E series multi-turn tracking employs energy-harvesting technology by harvesting the magnetic energy as the encoder shaft rotates. It is the gearless multi-turn counting that eliminates the gear wear-out or acoustics noise issue that is encountered in conventional geared multi-turn encoders.
This technology does not require periodic maintenance of the battery backup components and its downtime. This product is intended for industrial application, and ESD protection circuitry has been added to achieve Class 3 ESD immunity per IEC -61000-4-2 standard. The AS38-H39E series is also compliant with IP50 per IEC 60529 standard.