OptiFiber Pro custom test limit: Difference between revisions
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* 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. | (*) 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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* 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. | (*) 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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Revision as of 09:24, 14 June 2018
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.