DISCUSSION OF DROPOUT CRITERIA FOR MAGNETIC TAPE.
PACIFIC MISSILE RANGE POINT MUGU CALIF
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An investigation was conducted to determine the nature and cause of magnetic tape dropouts short-duration decreases in signal amplitude and their effect on analog data. Results of the tests indicated that more realistic dropout standards should be adopted for recertified tape used for analog recording. It was determined that the largest single cause of dropouts is the presence of foreign material adhering to the oxide surface of the tape. It is recommended that the dropout standards for recertified analog tape be established at 18 db in depth and 100 microseconds in width. The tape should be thoroughly cleaned before it is checked for dropout content. Author