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September 20th, 2012
Topcon Releases Firmware 4.0, Quartz Lock Loop technology

  
Langen said, “Most high precision GNSS receivers use crystal oscillators to establish a precise timing signal, which relies on the natural resonant vibration of a quartz crystal.  This conventional approach can provide suitable performance in smooth dynamics, but when exposed to severe real-word vibration and shock these simple systems can destabilize quickly, leading to inaccurate GNSS measurements or even complete satellite tracking failure.”  
 
By using advanced feedback loops, Topcon’s patented QLL “continuously monitors system behavior to detect and remove any fluctuations that may cause tracking problems – over a full range of vibration frequencies and magnitudes,” Langen said. “This allows for a clean, stable timing reference signal to be preserved through strong acceleration, vibration and bumps ­– for uninterrupted and reliable precise positioning.” 
 
Additionally, Firmware 4.0 adds many new features and improvements, including optimization of the RTK and DION positioning engines, initialization improvements to the VISOR™ heading determination engine, expanded web interface features and file management improvements.
 
More information on QLL and other Topcon innovations is available at www.topconoemsolutions.com.
 
Topcon Positioning Systems, Inc. (TPS) designs and manufactures precise positioning products and solutions for the global surveying, construction, agriculture, civil engineering, mapping and GIS, asset management and mobile control markets.  TPS’ parent company, Topcon Corporation (Tokyo Stock Exchange  – 7732), was founded in 1932.