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Maintenance
WA R N I N G
116
How to clean connectors
Cleaning connectors is difficult, as the core diameter of a single-
mode fiber is only about 9
see streaks or scratches on the surface. To be certain of the
condition of the surface of your connector and to check it after
cleaning, you need a microscope.
In the case of scratches, or of dust that has been burnt onto the
surface of the connector, you may have no option but to polish
the connector. This depends on the degree of dirtiness, or the
depth of the scratches. This is a difficult procedure and should
only be performed by a skilled person, and as a last resort, as it
wears out your connector.
Never look into the end of an optical cable that is connected to an
active source.
To assess the projection of the emitted light beam you can use
an infrared sensor card. Hold the card approximately 5 cm from
the output of the connector. The invisible emitted light is
projected onto the card and becomes visible as a small circular
spot.
Preferred procedure Use the following procedure on most
occasions.
1 Clean the connector by rubbing a new, dry cotton swab over
the surface using a small circular movement.
2 Blow away any remaining lint with compressed air.
Procedure for stubborn dirt Use this procedure when there is
greasy dirt on the connector.
1 Moisten a new cotton swab with isopropyl alcohol.
2 Clean the connector 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.
Keysight N4373D Lightwave Component Analyzer, User's Guide
m. This generally means you cannot
m
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