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A Study of DSN Traveling Wave Maser System ReliabilityReliability and availability characteristics of the DSN traveling wave maser (TWM) Assemblies are reported for the years 1981 through 1983, the charcteristics determined are: mean time between failures (MTBF) - 1200 hours; mean time to restore service (MTTRS) - 2.5 hours; and availability - 99.83%. The TWM MTBF is very good as compared to other DSN subsystems and assemblies. The TWM MTTRS is currently about three times as long as the average of other DSN subsystems. The dominant cause of TWM failures is contamination of the helium gas in the closed cycle refrigerators. Station configurations that do not provide TWM redundancy are subject to reception outages for long periods of time. Recommendations are made to improve the TWM Assembly availability characteristics for future mission support operations.
Document ID
Document Type
Reprint (Version printed in journal)
Stevens, R. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wiggins, C. P. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 12, 2013
Publication Date
August 15, 1984
Publication Information
Publication: The Telecommun. and Data Acquisition Rept.
Subject Category
Distribution Limits
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19840024551Analytic PrimaryThe Telecommunications and Data Acquisition Report
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