ISO/IEC 14763-3:2024: Difference between revisions
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= Solution = | = Solution = | ||
=== Table === | |||
{| class="wikitable" | {| class="wikitable" | ||
|+ | |+ | ||
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!Splice loss | !Splice loss | ||
!Fiber loss @ 850nm (dB/km) | !Fiber loss @ 850nm (dB/km) | ||
!Fiber loss @ | !Fiber loss @ 1300nm (dB/km) | ||
!Fiber loss @ | !Fiber loss @ 1310nm (dB/km) | ||
!Fiber loss @ | !Fiber loss @ 1550nm (dB/km) | ||
! | !Length (m) | ||
|- | |- | ||
|OS1 | |OS1 | ||
|0.75 | |0.75 | ||
|0. | |0.7 | ||
|0. | |0.3 | ||
| - | | - | ||
| - | | - | ||
| | | 1.0 | ||
| | |1.0 | ||
| | |5000 | ||
|- | |- | ||
|OS2 | |OS2 | ||
|0.75 | |0.75 | ||
|0. | |0.7 | ||
|0. | |0.3 | ||
| - | | - | ||
| - | | - | ||
|0. | |0.4 | ||
|0. | |0.4 | ||
|5000 | |||
| | |||
|- | |- | ||
|OM1, OM2, OM3, OM4, OM5 | |OM1, OM2, OM3, OM4, OM5 | ||
|0.75 | |0.75 | ||
|0.45 | |0.45 | ||
|0. | |0.3 | ||
|3.5 | |3.5 | ||
|1.5 | |1.5 | ||
| - | | - | ||
| - | | - | ||
| | |2000 | ||
|} | |} | ||
=== Examples === | |||
==== Example 1 - Multi-mode channel ==== | |||
Consider a cabling '''channel''' comprising: | |||
• optical fiber conforming to '''OM4''' of ISO/IEC 11801-1; | |||
• a total length including equipment cords of 100 m; | |||
• two panel connections in accordance with ISO/IEC 11801-1; | |||
• equipment cords terminated with connectors in accordance with ISO/IEC 11801-1. | |||
The channel limit at 850 nm would be: (0,1 × 3,5 dB) + (2 × 0,75 dB) = 1,85 dB | |||
The channel limit at 1 300 nm would be: (0,1 × 1,5 dB) + (2 × 0,75 dB) = 1,65 dB | |||
==== Example 2 - Single-mode channel ==== | |||
Consider a cabling '''channel''' comprising: | |||
• optical fiber conforming to '''OS2''' of ISO/IEC 11801-1; | |||
• a total length including equipment cords of 500 m; | |||
• two panel connections in accordance with ISO/IEC 11801-1; | |||
• two optical fiber splices in accordance with ISO/IEC 11801-1; | |||
• equipment cords terminated with connectors in accordance with ISO/IEC 11801-1. | |||
The channel limit at 1 310 nm would be: (0,5 × 0,4 dB) + (2 × 0,75 dB) + (2 × 0,3 dB) = 2,3 dB | |||
The channel limit at 1 550 nm would be: (0,5 × 0,4 dB) + (2 × 0,75 dB) + (2 × 0,3 dB)= 2,3 dB | |||
==== Example 3 - Multi-mode permanent link ==== | |||
Consider a permanent link comprising: | |||
• optical fiber conforming to OM3 of ISO/IEC 11801-1; | |||
• a total length of 100 m; | |||
• two panel connections in accordance with ISO/IEC 11801-1. | |||
Using the 1-jumper reference method, the limit would be as follows: | |||
• at 850 nm: (0,1 × 3,5 dB) + (2 × 0,45 dB) = 1,25 dB; | |||
• at 1 300 nm: (0,1 × 1,5 dB) + (2 × 0,45 dB) = 1,05 dB. | |||
==== Example 4 - Single-mode permanent link ==== | |||
Consider a permanent link comprising: | |||
• optical fiber conforming to OS2 of ISO/IEC 11801-1; | |||
• a total length of 500 m; | |||
• two panel connections in accordance with ISO/IEC 11801-1; | |||
• two optical fibre splices in accordance with ISO/IEC 11801-1. | |||
Using the enhanced 3-jumper or 1-jumper reference method, the limit would be as follows: | |||
• at 1 310 nm: (0,5 × 0,4 dB) + (2 × 0,7 dB) + (2 × 0,3 dB) = 2,2 dB; | |||
• at 1 550 nm: (0,5 × 0,4 dB) +(2 × 0,7 dB) + (2 × 0,3 dB) = 2,2 dB. | |||
Revision as of 09:55, 6 June 2024
Introduction
This is an extract of the most recent publication of the standard ISO/IEC 14763-3 in 2024. Information technology - Implementation and operation of customer premises cabling - Part 3: Testing of optical fiber cabling. For the complete publication, please visit ISO Store.
Solution
Table
| Cable type | Adapter loss embedded (dB) | Adapter loss first and last (dB) | Splice loss | Fiber loss @ 850nm (dB/km) | Fiber loss @ 1300nm (dB/km) | Fiber loss @ 1310nm (dB/km) | Fiber loss @ 1550nm (dB/km) | Length (m) |
|---|---|---|---|---|---|---|---|---|
| OS1 | 0.75 | 0.7 | 0.3 | - | - | 1.0 | 1.0 | 5000 |
| OS2 | 0.75 | 0.7 | 0.3 | - | - | 0.4 | 0.4 | 5000 |
| OM1, OM2, OM3, OM4, OM5 | 0.75 | 0.45 | 0.3 | 3.5 | 1.5 | - | - | 2000 |
Examples
Example 1 - Multi-mode channel
Consider a cabling channel comprising:
• optical fiber conforming to OM4 of ISO/IEC 11801-1;
• a total length including equipment cords of 100 m;
• two panel connections in accordance with ISO/IEC 11801-1;
• equipment cords terminated with connectors in accordance with ISO/IEC 11801-1.
The channel limit at 850 nm would be: (0,1 × 3,5 dB) + (2 × 0,75 dB) = 1,85 dB
The channel limit at 1 300 nm would be: (0,1 × 1,5 dB) + (2 × 0,75 dB) = 1,65 dB
Example 2 - Single-mode channel
Consider a cabling channel comprising:
• optical fiber conforming to OS2 of ISO/IEC 11801-1;
• a total length including equipment cords of 500 m;
• two panel connections in accordance with ISO/IEC 11801-1;
• two optical fiber splices in accordance with ISO/IEC 11801-1;
• equipment cords terminated with connectors in accordance with ISO/IEC 11801-1.
The channel limit at 1 310 nm would be: (0,5 × 0,4 dB) + (2 × 0,75 dB) + (2 × 0,3 dB) = 2,3 dB
The channel limit at 1 550 nm would be: (0,5 × 0,4 dB) + (2 × 0,75 dB) + (2 × 0,3 dB)= 2,3 dB
Example 3 - Multi-mode permanent link
Consider a permanent link comprising:
• optical fiber conforming to OM3 of ISO/IEC 11801-1;
• a total length of 100 m;
• two panel connections in accordance with ISO/IEC 11801-1.
Using the 1-jumper reference method, the limit would be as follows:
• at 850 nm: (0,1 × 3,5 dB) + (2 × 0,45 dB) = 1,25 dB;
• at 1 300 nm: (0,1 × 1,5 dB) + (2 × 0,45 dB) = 1,05 dB.
Example 4 - Single-mode permanent link
Consider a permanent link comprising:
• optical fiber conforming to OS2 of ISO/IEC 11801-1;
• a total length of 500 m;
• two panel connections in accordance with ISO/IEC 11801-1;
• two optical fibre splices in accordance with ISO/IEC 11801-1.
Using the enhanced 3-jumper or 1-jumper reference method, the limit would be as follows:
• at 1 310 nm: (0,5 × 0,4 dB) + (2 × 0,7 dB) + (2 × 0,3 dB) = 2,2 dB;
• at 1 550 nm: (0,5 × 0,4 dB) +(2 × 0,7 dB) + (2 × 0,3 dB) = 2,2 dB.