User's Manual

SPECIFICATION REV
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8.5 Product AQL (Acceptable Quality Level)
Due to anticipated low volume, AQL is not applicable at this time. AQL will be reevaluated if volume levels
increase significantly.
8.5.1. MTBF
The RBA shall meet an MTBF goal of 500,000 hours whereby the workload is 1000 actuations per day
per Bellcore TR-332.
8.5.2. Definition of Failure
An RBA is considered to be a failed RBA if the RBA experiences one or more problems listed below. A
failed RBA will be excluded from MTBF measurement if the failure is caused by misuse or abuse during
normal operation.
• ESL’s do not respond to RBA commands when RBA is located within specified range of ESL (Battery
OK)
• Push Switch does not work
• Enclosure is cracked and/or broken
• Excessive power consumption
8.6 Quality Goal
The supplier is requested to make continuous quality improvements to the RBA until the quality targets
below are achieved.
Out-of-box Quality Goal Reliability Goal
Factory Out of Box 50 DPM
Shipping & Handling 50 DPM
All Others 50 DPM
Total 150 DPM
0.5 million hours MTBF
DPM = devices per million