Keysight Technologies 8163A, User Manual

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8163A/B, 8164A/B, 8166A/B User’s Guide 447
Cleaning Instructions 15
How to clean optical devices which are sensitive to mechanical stress and pressure
Some optical devices, such as the Keysight 81000BR Reference Reflector,
which has a gold plated surface, are very sensitive to mechanical stress or
pressure. Do not use cotton-swabs, soft-tissues or other mechanical
cleaning tools, as these can scratch or destroy the surface.
Preferred Procedure
Use the following procedure on most occasions.
1 Blow away any dust or dirt with compressed air.
Procedure for Stubborn Dirt
To clean devices that are extremely sensitive to mechanical stress or
pressure you can also use an optical clean polymer film. This procedure is
time-consuming, but you avoid scratching or destroying the surface.
1 Put the film on the surface and wait at least 30 minutes to make sure
that the film has had enough time to dry.
2 Remove the film and any dirt with special adhesive tapes.
Alternative Procedure
For these types of optical devices you can often use an ultrasonic bath
with isopropyl alcohol. Only use the ultrasonic bath if you are sure that it
won't cause any damage anything to the device.
1 Put the device into the bath for at least three minutes.
2 Blow away any remaining liquid with compressed air.
If there are any streaks or drying stains on the surface, repeat the cleaning
procedure.