HP 54750A, User Manual, Page: 24 / 478

When you insert the ferrule into an adapter , make sure the ber end does
not touch the outside of the mating adapter . This ensures you will not rub
the ber end against any undesirable surface . Many connectors have a keyed
slot provided for optimum measurement repeatability that also helps to align
and seat the two connectors . After the ferrule is properly seated inside the
other connector , use one hand to keep it straight, rotate it to align the key ,
and tighten it with the other hand.
Most connectors using springs to push ber ends together exert one to two
pounds of force . Over-tightening or under-tightening these connectors can
result in misalignment and nonrepeatable measurements . Always nger
tighten the connector in a consistent manner . Refer to the manufacturer's
data sheet for any torque recommendations .
CAUTION
OPTION 3XX INSTRUMENTS: T o avoid damage , handle the pigtail ber with
care . Use only an appropriate ber cleaver tool for cutting the ber . Do
not pull the bare ber out of its jacket, crush it, kink it, or bend it past its
minimum bend radius .
Summary When making measurements with lightwave instruments or accessories ,
the following precautions will help to insure good, reliable , repeatable
measurements:
Conrm connector type compatibility .
Use extreme care in handling all lightwave cables and connectors .
Be sure the connector interfaces are clean before making any connections .
Use the cleaning methods described in this handbook.
K eep connectors and cable ends covered when not in use .
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