OptiFiber Pro custom test limit
Introduction
As application limits continue to become more stringent, limits proposed by ISO and ANSI are no longer acceptable to evaluate the quality of a fiber optic infrastructure. Using recent ISO and ANSI test limits is especially problematic when testing multi-mode fiber optic links with more than two connections, which is often the case in datacenters.
Solution
Unless specified otherwise, use these values to create one custom limit for testing PC/UPC terminated links and a second custom limit for testing APC terminated links. Please remember that in case of OTDR, "Connector Loss" should be interpreted as "Reflective Event Loss" and "Splice Loss" and "Non reflective Event Loss".
Maximum length for PC, UPC and APC terminated links
| Parameter (m) | Recommended value |
|---|---|
| Length | N/A |
General Settings for PC, UPC and APC terminated links
| Parameter | 850nm | 1300nm | 1310nm | 1490nm | 1550nm | 1625nm |
|---|---|---|---|---|---|---|
| Overall Loss (Max) (dB) | N/A | N/A | N/A | N/A | N/A | N/A |
| Overall Loss (Min) (dB) | N/A | N/A | N/A | N/A | N/A | N/A |
| Optical Return Loss (dB) | N/A | N/A | N/A | N/A | N/A | N/A |
| Segment Attenuation Coefficient (Max) (dB/km) | 3.0 | 1.5 | 1.0 | 1.0 | 1.0 | 1.0 |
| Segment Attenuation Coefficient (Min) (dB/km) | N/A | N/A | N/A | N/A | N/A | N/A |
Event Settings for PC and UPC terminated links
| Parameter (dB) | 850nm | 1300nm | 1310nm | 1490nm | 1550nm | 1625nm |
|---|---|---|---|---|---|---|
| Connector Loss (Max) | 0.30-0.50 | 0.30-0.50 | 0.30-0.50 | 0.30-0.50 | 0.30-0.50 | 0.30-0.50 |
| Connector Loss (Min) | N/A | N/A | N/A | N/A | N/A | N/A |
| Splice Loss (Max) | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 |
| Splice Loss (Min) | N/A | N/A | N/A | N/A | N/A | N/A |
| Reflectance (Max) | -35.00 | -35.00 | -45.00 | -45.00 | -45.00 | -45.00 |
| Reflectance (Min) | N/A | N/A | N/A | N/A | N/A | N/A |
Event Settings for APC terminated links
| Parameter (dB) | 850nm# | 1300nm# | 1310nm | 1490nm | 1550nm | 1625nm |
|---|---|---|---|---|---|---|
| Connector Loss (Max) | 0.30-0.50 | 0.30-0.50 | 0.30-0.50 | 0.30-0.50 | ||
| Connector Loss (Min) | N/A | N/A | N/A | N/A | ||
| Splice Loss (Max)* | 0.30-0.50 | 0.30-0.50 | 0.30-0.50 | 0.30-0.50 | ||
| Splice Loss (Min) | N/A | N/A | N/A | N/A | ||
| Reflectance (Max) | -65.00 | -65.00 | -65.00 | -65.00 | ||
| Reflectance (Min) | N/A | N/A | N/A | N/A |
# APC style connectors aren't used on multi-mode fiber links. You may decide to keep the default values for multi-mode wavelengths.