For our communication, OTDR is the equipment that we usually have to get in touch with, so analyzing OTDR and detecting faults is a skill we need to learn So what aspects should we start with if the OTDR test fails? Next, the editor will take you to learn more about how to detect OTDR problems. Especially when it can't be tested.
1. The optical port is not plugged in properly.
Our OTDR optical ports all have a small gap, and the things on our pigtails or jumpers are exactly together, so the connection of the jumper pigtails here is very important.
2. It breaks or loses a lot in a short distance.
Our OTDR all have a blind zone, event blind zone, which is the first testable shortest distance. If there is a large loss or break point within this shortest distance, there is no way to test it.
3. Test with light
For our ordinary OTDR, we do not support the light test, so if the light test is done, the OTDR may be broken directly.
4. The internal components of the laser are broken
This is a hardware problem. We can't solve it completely. Basically, we return to the factory.
5. The test is inaccurate and the error is too large.
Except for some very cheap OTDRs, the test error will be relatively large, but the total loss and total distance of the general OTDR test line are similar, so what might cause this situation?
The optical port is not connected well, the middle is buckled
The light port is blocked by foreign matter, causing the light to be incomplete
The laser is damaged and the machine is unclear
Of course, OTDR issues are ever-changing, and we all need to analyze them according to our different situations.
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