Specifications

No.
1505982
HUGHES PROPRIETARY
Rev.
C
Sheet 23 of 28
Form E75a Hughes Network Systems, LLC
9. RELIABILITY REQUIREMENTS
9.1 DESIGN LIFE
R10-01. The design life of the device shall be 10 years minimum when the system environment does not exceed the
operational conditions as specified in Section 3 and Section 5. The design life is defined as all hardware
remaining serviceable and operable at the specified performance level.
9.2 PRODUCTION LIFE
Production Life is defined as the number of years the supplier is expected to support the product.
R10-02. The production life of the 1505982-0002 shall be greater than 15 years.
9.3 ANNUALIZED FAILURE RATE (AFR)
R10-03. The LNA shall be designed and manufactured to allow an Annualized Failure Rate (AFR) no greater than 0.9%
calculated as follows:
AFR = (Failures/AFR Installed Base) x 1200.
Where
Failures = Number of units returned to HNS from HNS customer sites due to failure in any given month
AFR Installed Base = Total number of HNS customer sites LNAs operating in the same month
In case of any unusual trend of failures on any product HNS and vendor will mutually agree on an action plan to
investigate the causes and solve the problems as appropriate.
9.4 MEAN TIME BETWEEN FAILURES
R10-04. The LNA shall meet MTBF of greater than 1,000,000 hours based on MIL-HDBK-217, or Bellcore/Telecordia
(SR-332) at ground fixed environment, or field demonstrated.
9.5 MEAN TIME TO REPLACE
R10-05. The mean time to replace the LNA shall not exceed 15 minutes after a failure is detected and isolated and the
repair person is on site and has full access to the equipment.