Revision Date | July 10, 2017 || Document Number | UM-E71-308-01 || Rev C
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8 Reliability and Maintainability
8.1 Reliability
The Mean Time Between Failure (MTBF) for the CWAP is a minimum of 200,000 operating hours calculated
using the RIAC 217+ (AIC, +30°C, 65% duty cycle, 1428 cycles per year).
8.2 Maintainability
The CWAP is considered an LRU and is repairable only by Telefonix PDT or an authorized repair facility.
Periodic maintenance of the CWAP is not required.
8.3 Mean Time to Repair (MTTR)
Repair time will not exceed 30 minutes, which entails replacement of the LRU.
8.4 Failure Detection and Fault Isolation
LED indicators located on the system enclosure provide functional status of the CWAP.
8.5 Production Testing
Production units are subjected to Environmental Stress Screening (ESS), and a production Acceptance
Test Procedure (ATP) prior to shipment. These tests are intended to ensure that all elements of the product
are functional and capable of performing at both high and low temperature extremes and that they are free
of manufacturing defects. The Acceptance Test Procedure is run pre- and post-ESS to test the functional
characteristics of the product.
