Agilent Technologies N3970A - Manual (Page 13)

10
■ OPTICAL CONNECTOR
Cleaning
The glass power meter interface does not make contact with the
inserted connector: there is a slight air gap. Therefore it should
not wear out, and only needs occasional cleaning.
To clean the glass power meter interface: remove the
interchangeable adaptor to access the glass interface, then use
a sticky material such as ‘ Blu tac ‘ to dab the glass and remove
any dirt. A soft brush, alcohol, or air can are also appropriate.
Do not use anything hard that could scratch the glass.
In this manual, refer to the sections on Cleaning Information
and Procedures for further information.
Bare fiber adaptors
Bare fiber adaptors used with this power meter must achieve
fiber eccentricity of +_ 100 microns and end tolerance of
+
_ 0.3 mm, relative to the ferrule end. Be careful not to scratch
the detector interface when using adaptors, since permanent
meter inaccuracy may result. Preferred bare fiber adaptors
consist of a connector with fiber retention device.
If you work regularly with bare fibers, to avoid potential damage
to the meter, it is generally preferable to use an alternative
a rrangement such as a multimode pigtail with a
v-groove or mechanical splice.