Fluke OMNIFiber, Руководство пользователя

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C - 1
OMNIS
CANNER
User Guide
Appendix C - OMNIFiber PASS/FAIL Cri-
teria
For the latest cable installation, international standards, and conform-
ance techniques: http://cabletesting.com/Fiber_Standards.html
Formula 1: 568B Equation for 850nm fiber:
(# of mated connections x 0.75) + (# of splices x 0.3) + (length x 3.5dB/
1000m) = OLB*
Formula 2: 568B Equation for 1300nm fiber:
(# of mated connections x 0.75) + (# of splices x 0.3) + (length x 1.5dB/
1000m) = OLB*
Formula 3: 11801 Equation for 850nm fiber:
(# of mated connections x 0.75) + (# of splices x 0.3) + (length x 3.5dB/
1000m) = OLB*
Formula 4: 11801 Equation for 1300nm fiber:
(# of mated connections x 0.75) + (# of splices x 0.3) + (length x 1dB/
1000m) = OLB*
*Optical Link Budget (OLB) is the loss measured in a fiber link. Loss in
the connectors, the splices, and the cable are added up to the total link
loss or OLB.
The TIA 568B Equation and the ISO 11801 Equation specify the OLB.
Each has certain PASS/FAIL criteria based on the number of connectors
and splices located along the cable to be tested. These amounts can be
entered as test limits. OMNI
SCANNER
then calculates optical power loss as
follows: Max. Loss (dB) = Cable Loss + Connector Loss + Splice Loss.
The Optical Link Budget (OLB) is the PASS/FAIL point in dB. The num-
ber of connections and splices is entered in the first Autotest screen.