User`s guide

How to clean instruments with a recessed lens interface E Cleaning Information
E6000C Mini-OTDR User’s Guide, E0302
293
How to clean instruments with a
recessed lens interface
WARNING For instruments with a deeply recessed lens interface (for
example the Agilent Technologies 81633A and 81634A
Power Sensors) do NOT follow this procedure. Alcohol
and compressed air could damage your lens even further.
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 such instruments,
please refer the instrument to the skilled personnel of
Agilent’s service team.
Preferred Procedure
Use the following procedure on most occasions.
1 Blow away any dust or dirt with compressed air. If this
is not sufficient, then
2 Clean the interface by rubbing a new, dry cotton-swab
over the surface using a small circular movement.
3 Blow away any remaining lint with compressed air.
Procedure for Stubborn Dirt
Use this procedure particularly when there is greasy dirt
on the interface, and using the procedure for light dirt is
not sufficient. Using isopropyl alcohol should be your last
choice for recessed lens interfaces because of the
difficulty of cleaning out any dirt that is washed to the
edge of the interface:
1 Moisten a new cotton-swab with isopropyl alcohol.