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Elimination of Potential Electrical Stress During EMC (CS01) TestingThis viewgraph presentation reviews possible ways to eliminate electrical stress during Electromagneticic Compatibility (EMC) testing. The presentation reviews tests that have had problems due to electrical stress. On December 5, 1995 Cassini Radar instrument failed a functional test in preparation for EMC conducted susceptibility (CSO 1 ) testing. The instrument power supply did not turn on as required, and failure occurred prior to injection of CS test stimulus. A investigation of the failure was conducted. A PSPICE simulation of Cassini Radar 30V line using the EMC test setup was performed; the result of the simulation was an oscillation on the 30V input of the power supply. In another case: on December 28, 1999 an oscillation occurred on the input power line of the SlRTF Infrared Array Camera (IRAC) while preparing to perform CSOI testing, Resulted in damage to flight hardware. Subsequent to failure, JPL provided GSFC history and corrective action from Cassini Radar CSOI test failure GSFC implemented the same corrective action as JPL, except that the value of the resistor connected across the isolation transformer primary winding is 2.5 ohms instead of 50 ohms. Three recommendations are made: (1) Make EMC test community aware of the problem and potential solutions by presenting papers at major environmental test conferences (2) Include warnings and safeguards in EMC test requirements and procedures (3) Try to convince EMC test equipment suppliers to design a CSOl test fixture similar to fixture shown in the diagram
Document ID
20070024880
Acquisition Source
Jet Propulsion Laboratory
Document Type
Preprint (Draft being sent to journal)
External Source(s)
Authors
Erickson, Kenneth P.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Whittlesey, Albert C.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Vorperian, Vatche
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 23, 2013
Publication Date
March 20, 2006
Subject Category
Electronics And Electrical Engineering
Meeting Information
Meeting: 2nd International Workshop on Verification and Testing of Space Systems
Location: Turin
Country: Italy
Start Date: March 20, 2006
End Date: March 22, 2006
Distribution Limits
Public
Copyright
Other
Keywords
Cassini radar
oscillation
power converters
failure analysis

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