OptiFiber Pro custom test limit: Difference between revisions
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| Length (m) | | Length (m) | ||
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| Overall Loss (dB) | | Overall Loss (dB) | ||
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| Overall ORL (dB) | | Overall ORL (dB) | ||
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| Overall Loss (dB) | | Overall Loss (dB) | ||
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| Overall ORL (dB) | | Overall ORL (dB) | ||
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Revision as of 05:18, 16 September 2017
Introduction
It is our opinion that the lenght/loss limit specified in ISO/IEC 18011:2010 is not longer adequate to evaluate the quality of a recently installed fiber optic link; they are too relaxed.
Solution
We recommend the use of this custom limit for OTDR event evaluation. End-users could set 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 context 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 |
| 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 |
Limits for 1550 nm
| Parameter | Default value | Recommended value |
| Connector Loss (dB) | 0,75 | 0,30 |
| Splice Loss (dB) | 0,30 | 0,15 |
| 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 |