Trimble Outdoors 58052-00 Benutzerhandbuch

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2      PRODUCT DESCRIPTION
3 6      Copernicus GPS Receiver
MTBF
The Mean Time Between Failures (MTBF) of the GPS receiver module was 
calculated based on parts count - serial reliability using Telecordia Analysis and 
Industry field data for the PCB and Trimble Navigation's field return data (i.e. similar 
product or technology parts). This is generally referred to as the Trimble Navigation 
Reliability Database, and it consists of the following components:
Repair Center Data and Field Assessment Analysis
Supplier FIT goals collected through Commodities Engineering
Commercial Databases (i.e. Telecordia and MIL-STD-217)
Trirnble Navigation's Internal Qualification Test Data
Assumed Duty Cycle, 8760 hours per year
MTBF at Rated Duty Cycle, 819050 hours MTBF