HP 8481A Operating And Service Manual page 27

HP 8481A/82A/83A
08481-90049
Caution
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The RF connector bead deteriorates when contacted by any chlorinated
or aromatic hydrocarbon such as acetone, trichlorethane, carbon
tetrachloride, and benzene.
Do not attempt to clean connectors with anything metallic such as pins
or paper clips.
Clean the connector face by first using a blcist of compressed air. If the
compressed air fails to remove contaminants use a cotton swab dipped
in isopropyl or ethyl alcohol. If the swab is too big, use a round wooden
toothpick wrapped in a lint free cloth dipped in isopropyl or ethyl
alcohol.
Figure 9. Removing the Power Sensor's Cover
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