Fluke OF-500 OptiFiber, Technical Reference Handbook

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B-1
Appendix B
Loss Test Methods
Introduction
Note
The following discussion uses TIA/EIA-526
terminology for the names of the three
common test methods. See Appendix A for a
cross-reference of the method names in various
standards.
The number of fiber connections represented in loss test
results depends on the method used for making
reference and test connections. This appendix describes
the three common methods, A, B, and C, which are
defined in the ANSI/TIA/EIA-526-14A multimode
standard, and their equivalents, A.1, A.2, and A.3, which
are defined in the ANSI/TIA/EIA-526-7 singlemode
standard.
This appendix also describes alternate reference and test
connections you can use for all types of connectors,
including installations that have different connector
styles at the patch panels and outlets.
Use the TEST METHOD setting on the tester’s
Loss/Length tab in Setup to record the method used. This
setting does not affect loss results. It is only saved with
the results to record which method you used.
Note
ANSI/TIA/EIA-526-14A and 526-7 specify Method
B for measuring loss on multimode premises
fiber and Method A.1 for singlemode premises
fiber, respectively.