Huawei EchoLife HG8110 Service Manual page 289

EchoLife HG8010/HG8110/HG8240/HG8245/HG8247/
HG8447 GPON Terminal
Service Manual
Figure 4-4 Measurement interface of the optical power meter
Optical channel loss is the total insertion loss caused by optical fibers, optical splitters, optical
fiber connectors, and fiber connection points.
loss in the engineering design.
Table 4-4 Optical loss parameters in engineering
Item
Connection
point
Optical splitter
Optical fiber (G.
652)
Optical channel loss = L x a + n1 x b + n2 x c + n3 x d + e + f (dB)
Issue 02 (2011-12-08)
Average Loss (dB)
Connector 0.3
Mechanical 0.2
splicing
Fusion splicing 0.1
1:64 19.7
1:32 16.5
1:16 13.5
1:8 10.5
1:4 7.2
1:2 3.2
1310 nm (1 km) 0.35
1490 nm (1 km) 0.25
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
4 Maintenance and Troubleshooting
Table 4-4 shows the estimation of optical channel
281