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Idaho State University

Glossary

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AC Erasure
  • Using a magnetic field produced by an electromagnet powered by Alternating Current (AC) to degauss (purge) magnetic storage media.
  • The remnant or residual signal level after erasure with electrical degaussing equipment that should measure 90 decibels (dB) below saturated signal level. New equipment should be selected to meet the 90 dB standard. (AFR 205-16)