MHM-2020 Active Hydrogen Maser

Expanding upon the heritage of the world’s most widely installed active Hydrogen Maser, the Microchip MHM-2020 has enhanced the unique Auto-Tune design of the MHM-2010 by re-engineering the electronics and software to attain even better stability.

Capable of achieving <3 × 10-16 daily drift rates along with improved environmental stability, the MHM-2020 has been designed for applications requiring extreme frequency stability and low phase noise.

Designed, manufactured and tested in the USA with an eye toward long service deployments, 95% of Masers built at Microchip’s dedicated Maser facility since 1999 are still in operation. Each MHM-2020 is manufactured to meet stringent quality standards and undergoes extensive performance verification testing, prior to deployment.

• Telemetry monitoring via touch screen and secure Ethernet
• Dedicated keypad or USB/serial port (secure) allow flexibility in instrument control
• Drift compensation mode enabling drift as low as
• <3 × 10-16/day (typical, after 3 months)
• Low hydrogen usage for extended maintenance-free operation and demonstrated lifetime of >20 years
• Internal time-of-day clock for internal data time stamping
• 1PPS synchronization option for precise calibration to GNSS
• Multiple 1PPS and RF output options (5, 10 or 100 MHz)
• Low phase noise option
• Battery backup
• CE compliant