OptiFiber Pro custom test limit

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Introduction

Length/loss limits to be used with ISO/IEC14763-3:2014 (Information technology -- Implementation and operation of customer premises cabling -- Part 3: Testing of optical fibre cabling) are no longer adequate to evaluate the quality of a recent installed fiber optic infrastructure as they are too relaxed.

 

Solution

We recommend this custom limit during OTDR testing. End-users could set a Maximum Length and Maximum Overall Loss in accordance with the application limit.  For example, if the link is OM3 multimode fiber and the application is IEEE 10GBASE-SR, these values would be respectively 300m and 2,60dB (@ 850 nm). More information is available during the Certified Cabling Test Training module VERSIVOTDR.

Maximum length

Parameter Default value Recommended value
Length (m) N/A N/A

 

Limits for 850 nm

Parameter Default value Recommended value
Connector Loss (dB) 0,75 0,30
Splice Loss (dB) 0,30 0,15
Reflectance (dB) -35,0 -35,0
Overall Loss (dB) N/A N/A
Overall ORL (dB) N/A N/A
Segment Attenuation Coefficient (dB/km) N/A 3,00

 

Limits for 1300 nm

Parameter Default value Recommended value
Connector Loss (dB) 0,75 0,30
Splice Loss (dB) 0,30 0,15
Reflectance (dB) -35,0 -35,0
Overall Loss (dB) N/A N/A
Overall ORL (dB) N/A N/A
Segment Attenuation Coefficient (dB/km) N/A 1,50

 

Limits for 1310 nm

Parameter Default value Recommended value
Connector Loss (dB) 0,75 0,30
Splice Loss (dB) 0,30 0,15 or 0.30*
Reflectance (dB) -45,0 -45,0
Overall Loss (dB) N/A N/A
Overall ORL (dB) N/A N/A
Segment Attenuation Coefficient (dB/km) N/A 1,00

(*) When testing APC terminated fibers, the OTDR will interpret the APC connection as a splice and apply the splice limit accordingly.  We recommend using the same limit for connection and splice i.e. 0.30dB.

 

Limits for 1550 nm

Parameter Default value Recommended value
Connector Loss (dB) 0,75 0,30
Splice Loss (dB) 0,30 0,15 or 0.30*
Reflectance (dB) -45,0 -45,0
Overall Loss (dB) N/A N/A
Overall ORL (dB) N/A N/A
Segment Attenuation Coefficient (dB/km) N/A 1,00

(*) When testing APC terminated fibers, the OTDR will interpret the APC connection as a splice and apply the splice limit accordingly.  We recommend using the same limit for connection and splice i.e. 0.30dB.

 

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