Extreme Low Phase Noise and Frequency Stability for precise timekeeping and metrology applications.

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.

Auto-Tune with Drift Compensation

The MHM-2020 incorporates an automatic frequency control system to maintain the resonant cavity at a constant frequency relative to the hydrogen emission line. This technique enables the Maser to deliver long-term stability that is only attributed to the most stable cesium atomic standards.
Now, by pairing this technology with the new integrated Drift Compensation software, daily aging rates of < 3 × 10 ^-16  can be consistently achieved with the MHM-2020.

Outputs

The MHM-2020 provides multiple 5, 10, and 100 MHz outputs and 1PPS. Multiple configurations can be ordered to optimize for varied applications.Low Phase Noise Output Option

The MHM-2020 can be factory configured with low phase noise outputs that enable higher resolution measurements in VLBI applications.

Key Features

• 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 x 10-16 /day (typical, after 3 months)
• Low hydrogen usage for extended maintenance-free operation and Demonstrated lifetime of greater than 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 back-up
• CE compliant