Figure 5-2 Appearance Of The Ppm-350B; Figure 5-3 Schematic Diagram Of Measurement Points Of Optical Power In The Gpon; Table 5-2 Indexes Related To The Light On The Gpon Ont Side - Huawei EchoLife HG861 Manual

5 Troubleshooting

Figure 5-2 Appearance of the PPM-350B

According to , the differences between the PPM-350B optical power meter and common optical
power meters are that the PPM-350B optical power meter has a downstream input optical port
and an upstream input optical port, and can display the optical power of three wavelengths, that
is, 1310 nm, 1490 nm, and 1550 nm.
Figure 5-3

Figure 5-3 Schematic diagram of measurement points of optical power in the GPON

Field engineers should also know the indexes related to light on the ONT side, such as the
maximum input optical power of the 1490 nm wavelength, minimum output optical power of
the 1310-nm wavelength, and receive sensitivity of the 1490 nm wavelength.
Table 5-2

Table 5-2 Indexes related to the light on the GPON ONT side

Parameter Type
Upstream data
5-6
shows the common measurement points.
lists related indexes.
Wavelength (nm)
1310
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EchoLife HG861 GPON Terminal
Unit MIN
dB +0.5
Issue 01 (2009-07-30)
MAX
+5