Keysight Technologies 81650A User Manual

Contents

76 Keysight Laser Source Modules User’s Guide5 Cleaning InstructionsHow to clean instruments with a recessed lens interfacePreferred ProcedureUse the following procedure on most occasions:1 Blow away any dust or dirt with compressed air. If this is not sufficient,then2 Clean the interface by rubbing a new, dry cotton- swab over thesurface using a small circular movement.3 Blow away any remaining lint with compressed air.Procedure for Stubborn DirtUse this procedure particularly when there is greasy dirt on the interface,and using the procedure for light dirt is not sufficient. Using isopropylalcohol should be your last choice for recessed lens interfaces because ofthe difficulty of cleaning out any dirt that is washed to the edge of theinterface:1 Moisten a new cotton- swab with isopropyl alcohol.2 Clean the interface by rubbing the cotton- swab over the surface usinga small circular movement.3 Take a new, dry soft- tissue and remove the alcohol, dissolvedsediment and dust, by rubbing gently over the surface using a smallcircular movement.4 Blow away any remaining lint with compressed air.WARNING For instruments with a deeply recessed lens interface (for example theKeysight 81633A and 81634A Power Sensors) do NOT follow thisprocedure. Alcohol and compressed air could damage your lens evenfurther.Keep your dust and shutter caps on, when your instrument is not in use.This should prevent it from getting too dirty. If you must clean suchinstruments, please refer the instrument to the skilled personnel ofKeysight’s service team.