HP 86037B, Instruction Manual

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5-27
Maintenance
Cleaning Connections for Accurate Measurements
Visual inspection of fiber ends
Visual inspection of fiber ends can be helpful. Contamination or imperfections
on the cable end face can be detected as well as cracks or chips in the fiber
itself. Use a microscope (100X to 200X magnification) to inspect the entire
end face for contamination, raised metal, or dents in the metal as well as any
other imperfections. Inspect the fiber for cracks and chips. Visible imperfec-
tions not touching the fiber core may not affect performance (unless the
imperfections keep the fibers from contacting).
Cleaning Connectors
The procedures in this section provide the proper steps for cleaning fiber-
optic cables and HP universal adapters. The initial cleaning, using the alcohol
as a solvent, gently removes any grit and oil. If a caked-on layer of material is
still present, (this can happen if the beryllium-copper sides of the ferrule
retainer get scraped and deposited on the end of the fiber during insertion of
the cable), a second cleaning should be performed. It is not uncommon for a
cable or connector to require more than one cleaning.
C A U T I O N
Hewlett-Packard strongly recommends that index matching compounds not be
applied to their instruments and accessories. Some compounds, such as gels,
may be difficult to remove and can contain damaging particulates. If you think
the use of such compounds is necessary, refer to the compound manufacturer
for information on application and cleaning procedures.
Table 5-7. Cleaning Accessories
Item HP Part Number
Isopropyl alcohol 8500-5344
Cotton swabs 8520-0023
Small foam swabs 9300-1223
Compressed dust remover (non-residue) 8500-5262