For any successful OTDR measurement, a good launch from the OTDR is required.
The OptiFiber Pro provides a grading scale for how good the OTDR Port Connection is at the time of measurement. It is stored with the record and viewable in LinkWare Software - your customer will be able to see this in the test result.
An example is shown below:
The OTDR Port Connection Quality is primarily based on Reflectance but also includes loss. If you are experiencing problems in getting a GOOD OTDR Port Connection Quality, the following causes should be considered:
Are you using a launch fiber? You cannot use a patch cord. The launch fiber should be at least 105 m for multimode and 130 m for Singlemode
Homemade launch fiber? If you made the launch fiber yourself using a field polished connector, it is unlikely you will see the arrow in the GOOD range. That's because for multimode, we are looking for a reflectance of -45 dB and for singlemode, a reflectance of -50 dB, which is not going to be achieved with a field polish.
Damaged launch fiber? A simple inspection of the end face should reveal any scratches. To get a GOOD reading, you will need to see a perfect endface with no scratches. If your launch fiber connector has scratches on it, replace it. Remember, putting a damaged launch fiber into the OptiFiber Pro can damaged the OptiFiber Pro's connector.
Dirty OptiFiber Pro port? If the launch fiber is not clean, that dirt will transfer to the OTDR Port. You can use the FiberInspector FI-7000/1000 to view the OTDR Port for signs of dirt or damage
- Damaged OptiFIber Pro port? If the launch fiber is not clean or scratched, you can damaged the OTDR Port. Use the FiberInspector FI-7000/1000 to view the OTDR Port for signs of dirt or damage
The OTDR Port Connection Quality feature cannot be disabled.