Trimble Outdoors thunderbolt 64057-00-eng Manuale Utente

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2     Setting up and Running the ThunderBolt E
22     Trimble ThunderBolt E GPS Disciplined Clock User Guide
Once the ThunderBolt E has warmed up and acquired satellites it performs a 
self-survey: If at least one satellite is currently available, it will output 1 PPS and 
10 MHz data to the Trimble GPS Monitor software, see 
. The complete process 
can take an hour. Overall performance will improve after several days of continuous 
operation. 
1 PPS and 10 MHz is not synchronized with GPS until the unit enters 
Over-Determined Clock mode.