Frequency standard MHM 2010™

The MHM 2010TM is the only commercially available active hydrogen maser with stand-alone cavity switching auto tuning manufactured in the U.S. This technique enables the MHM 2010TM to deliver long-term frequency stability normally only attributed to the most stable cesium atomic standards. Hydrogen masers operate on the principle that when hydrogen atoms are provided the proper environment, they emit radiation of a precise frequency (1420 MHz) and spectral line width (21 cm). Phase locking this extremely small power, high purity signal to a very high performance quartz oscillator, provides the user with incredible long-term stability, as well as excellent phase noise. Active masers are typically 4 times more stable than passive hydrogen masers and 100 times more stable than high performance cesium. Active maser advantages in metrology include very low clock noise (eliminating the necessity for reference clock noise corrections) and 10,000 times shorter interval to reach a specified frequency stability compared to high performance cesium. Each MHM 2010 is manufactured to exacting quality standards and carefully checked at each stage to insure a top quality product. Once built, the units are subjected to extensive performance testing, verifying all aspects of operation. All maser product design, manufacturing and testing are conducted at a Microsemi facility dedicated to these operations.