Microtest SimpliFiber 1310 Source, Руководство пользователя

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SimpliFiber
ENGLISH - 20
The reference value must be stored before a
loss measurement can be calculated.
SimpliFiber
requires the reference value to compensate for
the signal loss in the launch cable. This value is
then automatically subtracted from the actual
measured value to determine cable plant loss.
Note: The launch cable used to set the refer-
ence value should be the same type as the
cables to be tested: 50/125, 62.5/125, or single-
mode
.
IMPORTANT
All connectors and fiber end faces should
be cleaned prior to testing.
The Reference Methods
There are three recognized methods for refer-
ence determination. Reference diagrams will
show how to establish a reference for each
method.
It is very important that the connections are not
disturbed after the reference value is estab-
lished. To assure that the effects of the connec-
tors and launch cables are “zeroed out”, follow
the instructions closely.
Note: When a connector
is removed and then reattached, it is unlikely to
go back into the exact same position. As a result,
measurements will change slightly when connec-
tions are made or broken.