Black Box TS1003A, TS1002A Fiber Optic Reference, Establishing the Reference, Launch/Jumper Cable

CHAPTER 8: OMNIFiber Reference

8.Fiber Optic Reference

8.1Establishing the Reference

Different methods can be used when making a reference measurement with OMNIFiber. The reference measurement to use depends on how the standard defines the link, and how the end equipment is interconnected. There are three basic link definitions and three corresponding reference methods.

Link	Reference	Multimode	Single-mode	Where
Definition	Method	Standard	Standard	Used
link=2 cross	1 jumper method	TIA-526-14A	TIA-526-7	TIA-568A,
connects +	or equivalent	Method B	Method A	ISO 11801
cable plant				100BASE-X,
				ATM, Fibre
				Channel,
				FDDI,
				Token Ring
link=1 cross	2 jumper method	TIA-526-14A	TIA-526-7	10BASE-X,
connect +	or equivalent	Method A	Method A.2	TIA 455-171
cable plant				Method B
link=cable	3 jumper method	TIA-526-14A	TIA-526-7
plant	or equivalent	Method C	Method A.3

8.2 The Launch/Jumper Cable

The launch/jumper cables are 2 m fiber cables and need to be of good quality and in excellent condition. Always clean the launch cable before use.

NOTE

The launch cable used to set the reference value should be the same type of fiber as the cables to be tested and certified, 50/125, 62.5/125 or singlemode.

115