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OMNIScanner User Guide
Chapter 8 Fiber Optic Reference
Methods
Establishing the Reference
Different methods can be used when making a reference measurement with
OMNI
Fiber.
The reference measurement to use depends on how the
standard defines the link, and how the network is interconnected. There are
three basic link definitions and three corresponding reference methods.
Link Reference Multimode Single-mode Where Used
Definition Method Standard Standard
link = 2 cross 1 jumper method TIA-526-14A TIA-526-7 TIA-568-A, ISO 11801
connects + or equivalent Method B Method A.1 100Base-X,
cable plant 1000Base-X, ATM,
Fibre Channel, FDDI,
Token Ring
link = 1 cross 2 jumper method TIA-526-14A TIA-526-7 10 Base-X, TIA 455-
connect + or equivalent Method A Method A.2 171 Method B
cable plant
link = cable 3 jumper method TIA-526-14A TIA-526-7,
plant or equivalent Method C Method A.3
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