Low-Phase-Noise Option
The Low-Phase-Noise Module is an option available for the Meridian II and Tycho II product lines.
Oscillator Options: For Time & Frequency Standards
EndRun’s rackmount Time & Frequency Standards (Meridian II and Tycho II) can be easily upgraded with various disciplined oscillators. Both oven-controlled crystal oscillators (OCXOs) and rubidium oscillators are available. Upgrading the oscillator improves phase noise performance, stability and/or holdover.This paper explains the options and lists detailed specifications.
Meridian II: All Options
The modular design of the Meridian II and Tycho II Precision TimeBase allows you to choose up to five option modules for installation in a single 1U chassis.
Meridian II Precision TimeBase
The Meridian II Precision TimeBase is a high-performance, modular, network-centric, time and frequency standard that generates signals with unparalleled accuracy, stability and spectral purity.
NIST Report
This is a report written by the National Institute of Standards and Technology (NIST) about tests performed on our Meridian II Precision TimeBase.
Testimonial - Defense Systems Integrator in Virginia
"Your phase noise specs tested as advertised and I like communicating via Linux - your product (Meridian) is awesome. We hope to use more of these in the near future."
Time & Frequency Standards
Time & Frequency Standards
We can reliably provide you the most precise and stable GPS-derived time & frequency equipment in the world.
Product Group Feature List
We can reliably provide you the most precise and stable GPS-derived time & frequency equipment in the world. These products are specifically designed to perform the best in terms of accuracy, stability, low phase noise and holdover. Following is a sample of our specifications when using our top-of-the-line Ultra Stable OCXO:
- Timing Accuracy is < 10 ns to UTC(USNO) when locked.
- Frequency Accuracy is < 6x10-14 to UTC(USNO) for 100,000 seconds.
- Frequency Stability at 1 second is < 4x10-13.
- Phase Noise at 10 MHz is < -113 dBc at 1 Hz and < -153 dBc at 10 kHz.
- Harmonics at 50 ohms are < -45 dBc.
- Holdover is < 6 us at 24 hours.
- No frequency steps - Guaranteed.
Oscillators & Frequency Steps
We have been selecting and tuning precision frequency control componentry for 35 years. During that time we have learned which components to use, and if we don't make them ourselves, we know where to get the best. One component at the heart of every good frequency standard is an oscillator, either quartz or rubidium. We've learned that most quartz oscillators suffer from frequency steps that cannot be mitigated by any software algorithm. The oscillators that we manufacture for use in our time & frequency standards are selected to be the absolute best in their class - no frequency steps - guaranteed.
We've Made Precision Frequency Standards for Decades
Our engineering team includes the designer of the first microprocessor-controlled disciplined frequency standard which was introduced in the 1980s using Loran-C signals. Since then we have created leading GPS-based standards and pioneered the use of CDMA for these applications. We have extensive experience with every broadcast RF signal source that has been used to discipline oscillators and provide precise time & frequency outputs. The products we are building today are the culmination of this legacy of experience in dealing with real world signal reception anomalies and oscillator behaviors.
Enable Leap Seconds Display Text?
On
Leap Seconds Text
A LEAP SECOND IS PENDING - this doesn't work & its not needed on this page.
Product Intro Summary
GPS-Synchronized for Reliability and Precision
We can reliably provide you the most precise and stable GPS-derived time & frequency equipment in the world.
Telecom Primary Reference Source
Meridian II Precision TimeBase Configured for PRS Operation
A cost-effective PRS with telecom clock outputs to meet the requirements of ANSI T1.101 and ITU-T G.811.
Tycho II Precision TimeBase
Basic GPS Time & Frequency Standard
Cost-effective, modular, network-centric time & frequency standard with industry-leading precision and accuracy.
Meridian II Precision TimeBase
Premium GPS Time & Frequency Standard for Unmatched Accuracy
Modular, network-centric, time & frequency standard that provides the most precise and stable, GPS-synchronized, time & frequency outputs in the world.
