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Appendix E. Cleaning Procedure
Cleaning Procedures
4 Take a new, dry soft-tissue and remove the water, by rubbing
gently over the surface using a small circular movement.
5 Blow away remaining lint with compressed air.
Alternative Procedure A
To clean lenses 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 B
If your lens is sensitive to water then:
1 Moisten the lens or the mirror with isopropyl alcohol.
2 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.
3 Blow away remaining lint with compressed air.
Cleaning Fixed Connector Interfaces
A few instruments, such as the HP 8158B, have fixed connector
interfaces. Generally, avoid cleaning this kind of interface, because
it is difficult to remove any used alcohol or lint from the input of the
optical block. Keep the dust caps on the interfaces unless it is in
use.
If there is dust on the interface, try cleaning it using compressed air.
If there is fluid or greasy dirt on the interface then contact Hewlett-
Packard, where trained personnel can open the instrument and do
the cleaning. Never open the instrument to clean the optical block
yourself, because the optical components can be easily scratched or
misaligned.
235
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