GPS Press Releases

10/24/2011 - Spirent Extends Capability of GNSS Record and Playback Test System

New functionality reaffirms GSS6400 as the most versatile solution for real world testing

Paignton, United Kingdom – (October 24, 2011) – Spirent Communications today announced the launch of new functionality on its GSS6400 GNSS Record and Playback test system. Users can now benefit from record and playback of two channels of serial digital data alongside the digitized GPS L1, GLONASS L1 and even QZSS signals. This is particularly useful when designing and testing integrated GNSS devices.

The GSS6400 now records and replays serial data from a wide range of data sources. Inertial sensors, DR sensors, reference receivers and 1pps signals can be recorded coherently with the GNSS embedded within the data file to guarantee synchronization. Additionally, the GSS6400 can log serial data into separate files for subsequent analysis or post processing. NMEA logs or Wi-Fi war-drive data are amongst the types of file that the GSS6400 is able to record.

The GSS6400 has always offered a simple, cost-effective and efficient way to capture real-world GNSS signals and replay them in the laboratory, to which is now added the ability to record other, serial data. It records all the radio frequency energy in the specified bandwidth – GPS L1, GLONASS L1 and QZSS. Both the wanted GNSS signals, including SBAS where present, and the background noise (or interference) are recorded.

"The new functionality further strengthens the GSS6400 live signal test offering, saving engineers valuable development time and expensive field testing costs," said Rahul Gupta, product manager for Spirent's navigation & positioning division.

The GSS6400 is an easy-to-use, self-contained unit with everything needed to start testing. Additional peripherals such as personal computers, hard drives, external power and cabling are not required. With the GSS6400, test engineers simply connect the supplied antenna and press the one-touch record button. Recorded files can be selected either from the front-panel display or the intuitive web-browser interface and replayed exactly as recorded.

The GSS6400 unit is appropriate for a wide range of test applications, from optimization of GNSS chipset performance in difficult environments through to testing mapping applications and repeatable production testing. The additional capability now extends the scope into testing integrated and hybrid navigation or positioning systems. Typical tests include acquisition & tracking sensitivity, TTTF for cold/warm/hot starts, positional accuracy etc.

To learn more about the GSS6400 Record and Playback System and download Spirent's latest e-books visit

About Spirent Federal Systems
Spirent Federal Systems was formed in July 2001 by Spirent Communications as a wholly owned subsidiary and United States proxy company. Spirent Federal markets and sells products in North and South America with value-added features and ongoing customer support. Spirent Federal Systems is headquartered in Yorba Linda, California, with support and sales offices throughout the US.

About Spirent's Positioning Technology Division
Spirent is the first choice of major manufacturers, integrators, test facilities and space agencies worldwide for GNSS testing and simulation solutions. Today, Spirent simulation systems are used throughout the world through a broad range of clients in more than 30 countries. Spirent delivers navigation and positioning test equipment and services to all sectors of the navigation and positioning community, from government agencies through to high volume commercial markets.

About Spirent Communications plc
Spirent Communications plc. (LSE: SPT), a global leader in test & measurement, inspires innovation within development labs, networks and IT organizations to enable customers to deploy communications networks, services & applications, and devices that enrich life. Our extensive portfolio of solutions test data centers, high speed Ethernet networks and services, 3G/4G wireless networks and devices, network security, and global navigation satellite systems. With solutions used by more than 1,700 customers in 30 countries, the world’s largest equipment manufacturers, service providers, enterprise and governments rely daily on Spirent to help ensure their success. Based in Sunnyvale, CA, Spirent Communications has 1,300 employees worldwide.

Spirent Communications plc Ordinary shares are traded on the London Stock Exchange (ticker: SPT). The Company operates a Level 1 American Depositary Receipt ("ADR") program with each ADR representing four Spirent Communications plc Ordinary shares. The ADRs trade in the US over-the-counter ("OTC") market under the symbol SPMYY and the CUSIP number is 84856M209. Spirent Communications' sales to the United States government are made through Spirent Federal Systems Inc (

Spirent, Spirent Communications and the Spirent logo are trademarks or registered trademarks of Spirent Communications plc. All other trademarks or registered trademarks mentioned herein are held by their respective companies. All rights reserved.

This document may contain forward-looking statements which are made in good faith and are based on current expectations or beliefs, as well as assumptions about future events. You can sometimes, but not always, identify these statements by the use of a date in the future or such words as "will", "anticipate", "estimate", "expect", "project", "intend", "plan", "should", "may", "assume" and other similar words. By their nature, forward-looking statements are inherently predictive and speculative and involve risk and uncertainty because they relate to events and depend on circumstances that will occur in the future. You should not place undue reliance on these forward-looking statements, which are not a guarantee of future performance and are subject to factors that could cause our actual results to differ materially from those expressed or implied by these statements. The Company undertakes no obligation to update any forward-looking statements contained in this document, whether as a result of new information, future events or otherwise.

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