Master Timing Reference provides accurate synchronization.

Press Release Summary:

Delivering metrology-grade time and frequency performance in configurable 1U rack-mountable package, SyncSystem 4380A employs internal rubidium oscillator and L1/L2 GPS receiver that mitigates effect of ionospheric delay changes and supports advanced GPS processing. Reference offers timing accuracy of <10 ns RMS, frequency accuracy of <1E-13 at 1 day, and holdover of 250 ns at one day. Six expansion ports for hot-swappable output modules provide array of timing signals.

Original Press Release:

Microsemi Introduces SyncSystem 4380A Master Timing Reference with Highest Levels of Accuracy and Performance at ION GNSS+ Conference

New Precise Time and Frequency Reference Provides Greater Functionality, Improved Scalability, and Increased Reliability to Meet the Most Stringent Requirements

ALISO VIEJO, Calif., – Microsemi Corporation (Nasdaq: MSCC), a leading provider of semiconductor solutions differentiated by power, security, reliability and performance, today announced a new high performance precise time and frequency product, the SyncSystem 4380A Master Timing Reference, for use in metrology, defense, communications, aerospace and other applications where performance and reliability are vital. The device is particularly well-suited for applications requiring accurate synchronization as well as repeatable timing performance which demand the highest levels of reliability.

"The SyncSystem 4380A delivers metrology-grade time and frequency performance in a highly configurable 1U rack-mountable package," said Sri Purisai, manager of Microsemi's synchronization business unit. "Building upon the legacy of Microsemi's 4370A, the 4380A has been enhanced with high performance components and advanced algorithms to deliver a world-class timing reference that will address our customers' most stringent performance requirements, now and for many years to come."

World-Class Timing Performance

Microsemi's new SyncSystem 4380A employs an internal rubidium oscillator and an L1/L2 GPS receiver to ensure accurate synchronization of the 4380A with Coordinated Universal Time (UTC)/U. S. Naval Observatory (USNO) and repeatability customers can depend upon every single day of operation.  L1-only GPS receivers are plagued by unpredictable events such as solar storms, which impact timing performance by stimulating an increase in the total electron count (TEC) of the ionosphere. These events degrade the performance of timing systems unless an L1/L2 receiver is used, as it enables a direct measurement and correction for the delay of GPS signals through the ionosphere.  Microsemi's SyncSystem 4380A's L1/L2 GPS receiver is a must-have for applications requiring repeatable timing performance with the highest levels of reliability.

Included with the standard 4380A is an L1/L2 GPS antenna that enables the system to precisely locate its antenna position with millimeter-level accuracy. This is accomplished by using the auto-survey mode of the 4380A to generate a RINEX observation file that can be uploaded to online processing utilities to provide a differential GPS solution for the position of the antenna. The same technique is used to precisely track plate-tectonic movements of the Earth. This attention to detail is critical in guaranteeing system performance of <10 ns RMS because the largest error contributor is the calibration bias (which includes errors in antenna position).

Configurable and Scalable

The SyncSystem 4380A is well-suited to satisfy today's timing needs and provides the scalability to meet future requirements as well.  Each 4380A has six expansion ports for hot-swappable output modules that provide an array of timing signals. Output modules exist for most conceivable timing signals, and new modules are routinely developed to support specialized timing signals for users with unique requirements.

Although the 4380A already employs an internal rubidium oscillator, the standard 4380A also has the ability to use an external frequency reference (e.g., 5071A, MHM 2010) when available. This further enhances the performance of the 4380A without requiring additional upgrades.

Key Features

--  Timing accuracy: <10 ns RMS

--  Frequency accuracy: <1E-13 at 1 day

--  Phase noise: -110 dBc/Hz (at 1 Hz offset)

--  Holdover: 250 ns at one day

--  Network Time Protocol (NTP)

--  Hot-swappable input/output modules

--  Redundant and hot-swappable power supplies

--  L1/L2 GPS receiver mitigates effect of ionospheric delay changes and supports advanced GPS processing

--  GPS log access via network

--  Remote software upgrades via network

--  External frequency reference input enables augmented timing performance

4380A Product Demonstrations at ION GNSS+ Conference

Microsemi's technical experts will be showcasing the new SyncSystem 4380A in booth #601 at ION GNSS+, the world's largest technical meeting and showcase of GNSS technology, products and services. ION GNSS+ will take place Sept. 14-18, 2015 at the Tampa Convention Center in Tampa, Florida.To schedule a meeting or product demonstration with Microsemi during the conference, contact

Product Availability

Microsemi's new SyncSystem 4380A product will be available for order starting in fall 2015. For more information, visit To request a product datasheet or further product details, email

About Microsemi's Timing and Synchronization Product Portfolio

As a global provider of advanced timing and synchronization solutions, Microsemi offers a complete portfolio of precise time and frequency products that span all levels of integration, from integrated circuits, to components for embedded applications, to timing and synchronization systems, to turnkey timescales for customers around the world. Microsemi's embedded timing solutions include component clocks, such as the rubidium Miniature Atomic Clock (MAC) and the Chip Scale Atomic Clock (CSAC), with best-in-class performance for their respective power consumption levels, as well as modules, providing GPS Disciplined Oscillators (GPSDOs) and bus level timing. At the systems level, solutions offered by the company generate, distribute and apply precise time for the communications, aerospace, defense, IT infrastructure and metrology industries. Customers range from communications service providers and network equipment manufacturers to governments and their suppliers worldwide. Using the technology offered by Microsemi, customers are able to build more reliable networks and systems by using the company's advanced timing technologies, atomic clocks, services and solutions. These systems support today's precise timing standards, including GPS-based timing, IEEE 1588 (PTP), Network Time Protocol (NTP), Synchronous Ethernet and DOCSIS® timing. To learn more visit

About Microsemi

Microsemi Corporation (Nasdaq: MSCC) offers a comprehensive portfolio of semiconductor and system solutions for communications, defense & security, aerospace and industrial markets. Products include high-performance and radiation-hardened analog mixed-signal integrated circuits, FPGAs, SoCs and ASICs; power management products; timing and synchronization devices and precise time solutions, setting the world's standard for time; voice processing devices; RF solutions; discrete components; security technologies and scalable anti-tamper products; Ethernet solutions; Power-over-Ethernet ICs and midspans; as well as custom design capabilities and services. Microsemi is headquartered in Aliso Viejo, Calif., and has approximately 3,600 employees globally. Learn more at

Microsemi and the Microsemi logo are registered trademarks or service marks of Microsemi Corporation and/or its affiliates. Third-party trademarks and service marks mentioned herein are the property of their respective owners.


Farhad Mafie

VP Worldwide Product Marketing


Beth P. Quezada

Director, Corporate Communications


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