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Versiv Cabling Certification Product Family
Users Manual
104
The tester requires you to set the reference at these times:

When you change the CertiFiber Pro module in the main or
remote tester.

When you use a different remote tester.

When you change the
Reference Method
in the test setup.
Set the reference also at these times:

At the start of each day, at the job site, then at regular
intervals during the day. For example, set the reference when
you start tests on a different series of fibers.

When you connect a test reference cord to the module’s
output port or to another source, even if you connect the
same test reference cord you connected before.

When the tester tells you that the reference is out of date.

When a loss measurement is negative. This occurs when there
was a problem when you set the reference. For example, an
endface was dirty or the testers were cold.

Caution
Do not disconnect the test reference cords from
the modules’ output ports after you set the
reference. If you do, you will change the amount
of optical power that enters the fiber and the
reference will not be correct.
Good Reference Values
For
Smart Remote
and
Loopback
modes, these are the typical
ranges for reference values:
 Multimode 50/125 μ m fiber: -19.4 dBm to -26.5 dBm

Multimode 62.5/125 μ m fiber: -17.5 dBm to -23.0 dBm
 Singlemode fiber: -1.0 dBm to -6.0 dBm
For
Far End Source
mode with a CertiFiber Pro source, reference
values must be in these ranges: