Figure 4-4 Measurement Interface Of The Optical Power Meter; Table 4-4 Optical Loss Parameters In Engineering - Huawei HG8240 Service Manual

EchoLife HG8240/HG8245/HG8247 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 04 (2011-01-12)
Connector
Mechanical
splicing
Fusion splicing
1:64
1:32
1:16
1:8
1:4
1:2
1310 nm (1 km) 0.35
1490 nm (1 km) 0.25
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4 Maintenance and Troubleshooting
Table 4-4 shows the estimation of optical channel
Average Loss (dB)
0.3
0.2
0.1
19.7
16.5
13.5
10.5
7.2
3.2
4-9