The first leap second since late 2008 will be added to the official time scale (UTC) on June 30, 2012. This will be the first mid-year leap second event in 16 years.
It is up to GPS devices' firmware and algorithms to manage the leap second correctly. It is recommended to test leap second conformance to the GPS specification IS-GPS-200E and to uncover any detrimental effect of the leap second. If any problems are identified, then corrective measures can be implemented before June 30.
Leap Second Testing Made Easy
Spectracom’s GPS constellation simulators, models GSG 54, 55, and 56 can easily simulate the leap second event of June 30, 2012. A typical test takes less than 35 minutes to set up and run. The application note Leap Second Testing Made Easy 
provides background on the leap second event and describes leap second testing with the Spectracom simulator. Existing users of GSG 5 Series GPS simulators can download our sample leap second test scenario.
Products for Leap Second Testing
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GSG-56 GLONASS+GPS 16-channel Simulator
The GSG-55 is a GNSSSignal Simulator offering simultaneous GLONASS and GPS L1 simulation with all the features of the GSG-55, including all operating SBAS systems for worldwide coverage.
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GSG-55 16-channel GPS Simulator
The GSG-55 is a GPS Signal Simulator that expands on the set of features of the popular GSG-54, adding 16-channel simulation, SBAS simulation and white noise generation.
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GSG-54 8-channel GPS Simulator
The GSG-54 is a GPS Signal Simulator offering complete control over testing position, navigation and timing functions of GPS receivers without the complexity and cost of other multi-channel GPS signal simulators.
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GSG-52 4-channel GPS Simulator
The GSG-52 GPS Signal Simulator offers affordable GPS navigational fix, position and timing testing in production or for simple development test. Ideal for leap second testing.
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