Emerald Platform™ Stratum 3E OCXOs (oven controlled oscillators) and DCXOs (digitally controlled OCXOs) are engineered to solve the long standing challenges of legacy quartz OCXOs which are sensitive to environmental conditions, require protective components, and are difficult to procure and use. Emerald OCXOs are designed to provide better dynamic performance, unmatched ease-of-use, the smallest size, and shorter lead times.