446 8163A/B, 8164A/B, 8166A/B User’s Guide
15 Cleaning Instructions
How to clean instruments with a recessed lens interface
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.
2 Clean the interface by rubbing the cotton-swab over the surface using
a small circular movement.
3 Take a new, dry soft-tissue and remove the alcohol, dissolved sediment
and dust, by rubbing gently over the surface using a small circular
movement.
4 Blow away any remaining lint with compressed air.
For instruments with a deeply recessed lens interface (for example the
Keysight 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
Keysight’s service team.
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