Symmetricom�, Inc. (NASDAQ: SYMM), a worldwide leader in precise time and frequency technologies that accelerate the deployment and enable the management of next generation networks, today announced the all-digital 5125A High-Performance, Extended-Range Phase Noise and Allan Deviation Test Set (ADEV), a comprehensive solution for phase noise and stability characterization of frequency sources up to 400 MHz. The 5125A�s unique all-digital architecture makes it easier to characterize high performance sources in this frequency range.

�The 5125A eliminates the need for tedious multi-step configuration and calibration routines through the use of the direct sampling technique developed by Symmetricom for lower frequency oscillators� commented Dr. Samuel Stein, chief technologist at Symmetricom. �By extending the technology of earlier generation test sets, we were able to obtain excellent performance from the 5125A throughout a much broader frequency range. This instrument offers an extremely low close-in phase noise floor (down to -145 dBc/Hz at 1 Hz from a 10 MHz carrier and to -130 dBc/Hz at 1 Hz from a 100 MHz carrier), which was previously only available from significantly higher priced multi-box solutions.�

The 5125A combines sophisticated timing technologies into a single, advanced measurement instrument containing Symmetricom�s patented phase measurement algorithm, allowing fast yet accurate single sideband (SSB) phase noise and ADEV measurements at the click of a button, at a fraction of the cost of alternative solutions. Users simply connect the device under test (DUT) and a reference, which need not be at the same frequency as the DUT, and press the start button. Seconds later, valid measurement data appears on the unit�s high resolution display.

�We have used the Symmetricom 5120A phase noise test set to measure downconverted 5 GHz dielectric resonator oscillators against the internal references provided by the 5120A option 01,� commented�Dr. Jeremy Everard,�research�chair in�low�phase�noise�signal�generation at the University of York in the United Kingdom, whose work is sponsored by BAE Systems/Royal Academy of Engineering. �Accurate phase noise measurements were easy to make since the test set does not require phase locking or frequency matching of the DUT and the internal reference. We look forward to utilizing the extended frequency range of the new 5125A."

The innovative 5125A includes the following features and benefits:

  • Input frequency range of 1 � 400 MHz � covering a wide range of high performance reference oscillator frequencies
  • Easy to use all digital test set architecture � providing fast and accurate phase noise and Allan deviation measurements
  • Accurate phase noise measurements as close as 0.0001 Hz from the carrier � allows better characterization of frequency sources for the world�s most demanding applications such as space and RADAR environments
  • Reference need not be at the same frequency as the device under test � devices at any frequency (up to 400 MHz) can be characterized with a single, fixed frequency reference
  • Highly cost-effective solution

Availability

The 5125A is now shipping.

For more information, visit: http://www.symmetricom.com/products/test-and-measurement/phase-noise-allan-deviation-test-sets/5125A-Test-Set/.

About Symmetricom, Inc.

As a worldwide leader in precise time and frequency products and services, Symmetricom provides �Perfect Timing� to customers around the world. Since 1985, the company�s solutions have helped define the world�s time and frequency standards, delivering precision, reliability and efficiency to wireline and wireless networks, instrumentation and testing applications and network time management. Deployed in more than 90 countries, the company�s synchronization solutions include primary reference sources, building integrated timing supplies (BITS), GPS timing receivers, time and frequency distribution systems, network time servers and ruggedized oscillators. Symmetricom also incorporates technologies including Universal Timing Interface (UTI), Network Time Protocol (NTP), IEEE 1588 (Precision Time Protocol), and others supporting the world�s migration to Next Generation Networks (NGN). Symmetricom�s QoE video quality management solutions provide the tools necessary to accurately monitor and analyze video quality and bring higher satisfaction levels to the end user. Symmetricom is based in San Jose, Calif., with offices worldwide. For more information, visit http://www.symmetricom.com.

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