DTX Series CableAnalyzer
Technical Reference Handbook
7-10
Connector Ends
Wipe the end of the ferrule with a swab or wipe lightly
moistened with alcohol. Dry with a dry swab or wipe.
Always cover unused connectors with dust caps or plugs.
Clean dust plugs periodically with a swab or wipe and
alcohol.
About Setting the Reference
The reference serves as the baseline power level for loss
measurements. Regular referencing helps account for
minor variations in source power and connection integrity.
Also, since the reference is the baseline for measurements,
the losses of the reference test cords and adapters used
during referencing are excluded from test results.
Note
Turn on the tester and smart remote and let them
sit for 5 minutes before setting the reference.
Allow additional time if the modules have been
stored above or below ambient temperature.
You should set the reference at these times:
•
At the beginning of each day using the remote end
setup (Figures 7-9, 7-13, or 7-17) you will use that day.
•
Anytime you reconnect a reference test cord to the
module’s output or other source.
•
Anytime the tester warns you that the reference is out
of date.
•
Anytime you see a negative loss measurement (see
page 9-3.
You must set the reference at these times:
•
Anytime you change the fiber module in the tester or
smart remote.
•
Anytime you start using a different smart remote.
•
Anytime you change the Test Method in Setup.
•
Twenty-four hours after the reference was previously
set.
WCaution
Do not disconnect the reference test cords from
the testers' output ports after setting the
reference. Doing so may alter the amount of
optical power launched into the fiber and
invalidate the reference.
Reference values should not change by more than a few
tenths of a dB from day to day. Larger changes may indicate
a problem with the reference test cords or connections.
See the sections on Smart Remote, Loopback, and Far End
Source modes for details on setting the reference for each
mode.
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