Figure 5-4 Measurement Interface Of The Optical Power Meter; Table 5-3 Optical Loss Parameter Table Used In The Engineering - Huawei EchoLife HG861 Manual

EchoLife HG861 GPON Terminal
Parameter Type
Downstream data
Downstream CATV
The indexes in are calculated according to the GPON 984.2 Class B+ Protocol. In the actual
calculation, the insertion loss must be considered. Therefore, it is recommended that 1 dB margin
should be reserved in the deployment.
To use an optical power meter, do as follows.
1.
2.
3.
4.
Figure 5-4

Figure 5-4 Measurement interface of the optical power meter

he optical channel loss is the total loss caused by optical fibers, optical splitters, active
connectors, and fixed connection points of optical fibers. In the engineering design,
can be used to estimate the optical path attenuation.

Table 5-3 Optical loss parameter table used in the engineering

Board Name
Connecting point
Optical splitter
Issue 01 (2009-07-30)
Wavelength (nm)
1490
1550
Connect optical fibers to the upstream and downstream optical ports correctly.
Turn on the power supply.
Choose the measurement unit (dB or mW).
Perform the measurement.
shows the measurement interface of the optical power meter.
Connector
Mechanical connection
Fusion splicing
1:64
1:32
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Unit MIN
dB -27
dB -8
Average Loss (dB)
0.3
0.2
0.1
19.7
16.5
5 Troubleshooting
MAX
-8
+2
Table 5-3
5-7