Getting Started with Your Unit
28 OX1
Working With Launch and Receive Test Cords
Working With Launch and Receive Test Cords
For easier handling and optimum performance when you work with
launch and receive cords, EXFO strongly recommends to use the cords
especially designed by EXFO for your OX1 unit. The 20- and 60-meter cords
are mainly used as launch cords, but they can also be used as receive
cords for links shorter than one kilometer. For links of more than one
kilometer, you should use longer receive cords (a 150-meter SPSB cord, for
example). However, you can use your own test cords. By default, the use of
launch and receive cords is disabled, but you can enable it and specify the
lengths of the cords you intend to use. The length of both cords is set to 20
meters by default, but you can change it. You can also change the meters
for feet if you prefer. All your settings are kept in memory even when you
turn off the unit.
The launch and receive cords and their connectors should always be in
good condition. The connectors should also be clean before using the
cords.
The launch cords used with units having APC-type connectors are
20 meters long. Since these connectors tend to be less reflective even
when they are showing signs of wear, 20 meters is usually enough to cover
the dead zone located between the Optical Xplorer and the actual fiber
being measured.
The OX1 units equipped with UPC-type connectors require 60-meter long
launch cables. The reflectance between the unit and the actual fiber being
measured should be below –35 dB. This value can be significantly affected
by connectors that are dirty and showing signs of wear.
Refer to the technical specifications of your unit to have a complete list of
all the launch and receive cords available.
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