Once the measurements begin, the customer is linked to UTC(NIST) and the system will require no operator attention. All that is required is to mount a small GPS antenna in a location with a clear view of the sky, to connect your input signals, and to connect the unit to an Internet connection. An easy-to-read instruction manual makes installation a snap. TMAS subscribers receive a calibrated time measurement system that includes everything needed to make state-of-the-art measurements that are continuously traceable to the SI. Each of these customers must continuously generate time signals and be able to state the uncertainty of those signals with respect to UTC(NIST) so that traceability to the International System (SI) of units can be established. TMAS customers include calibration and metrology laboratories, telecommunication providers, instrumentation manufacturers, military installations, defense contractors, government research laboratories, and financial markets and stock exchanges. The TMAS meets the requirements of any facility or organization that needs to maintain a high accuracy time standard. NIST certifies these results by sending each customer a monthly report that is in full compliance with the ISO 17025 standard. Time is measured with a combined standard uncertainty of about 10 nanoseconds, and frequency is measured with an uncertainty near 1 x 10 -14 after 1 day of averaging. Customers can then view their standard's performance with respect to UTC(NIST) using an ordinary web browser, with results updated every 10 minutes. Each customer receives an easy-to-install time measurement system that performs the measurements and sends the results to NIST via the Internet for instant processing. The TMAS works by making simultaneous common-view measurements at NIST and at the customer's facility with Global Positioning System (GPS) satellites. The optional NIST disciplined clock (NISTDC) add-on to the TMAS will lock the customer’s standard to UTC(NIST), essentially replicating the national time standard at the customer’s facility. The basic TMAS service monitors the customer's local time standard by continuously comparing it to UTC(NIST), the national time standard for the United States, and reports new results via the Internet to the customer every 10 minutes. PTP timestamp accuracy to GPS reference clockīetter than 18 nanoseconds RMS to UTC (USNO).The NIST Time Measurement and Analysis Service (TMAS) was designed to serve any organization that is required to maintain an accurate local time standard. Featureīetter than 10 nanoseconds RMS to UTC (USNO). You will not find this level of accuracy in any other PTP Grandmaster. Meridian II provides a PTP timestamp accuracy that is better than 18 nanoseconds to UTC. This results in the lowest total cost of ownership in the industry and is backed by our Satisfaction Guarantee! About PTP Timestamp Accuracy Meridian II is made in America, supported with free software upgrades and free technical support (if needed). High Reliabilityĭesigned for mission-critical applications, Meridian II is based on a high-reliability platform with a conservative MTBF up to 30 years.
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