Huawei NE05E Hardware Manual page 444

HUAWEI NE05E,NE08E
Hardware Guide
Step 3 Turn on the optical power switch and set the working wavelength according to the
optical interface type. The optical power meter reads that the launched optical
power of the optical interface board is A.
Step 4 Recover the fiber connection to the OUT port.
Step 5 On the ODF side, remove the fiber that connects to the OUT port. Connect the
fiber to the optical power meter. The tested optical power is B.
Step 6 Remove the fiber from the corresponding OUT port of the optical interface board.
The optical power meter reads the LO state and receives no optical signals.
Step 7 Compare A with B.
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If the fiber is connected through a flange, the deviation between A and B should
be less than 2 dB. Otherwise, it indicates that the fiber is incorrectly connected
and the attenuation of the fiber is not within the normal range. Make sure that
the fiber is fine and correctly routed, and then check whether the fiber terminal is
clean.
Step 8 Check the fiber of the IN port in the same way.
Step 9 Recover the fiber connections on the chassis side and ODF side.
Step 10 Repeat Steps 1 - 9 to check fiber connections to other optical interfaces.
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4.1.1.3.5 Grounding Specifications
Suitable grounding helps to avoid accidental personal injury and guarantee the
safe running of the equipment, and provide EMC shielding to improve the quality
of service (QoS).
General Grounding Specifications
This section introduces the general grounding specifications.
General grounding specifications, as shown in
Table 4-16 General grounding specifications
No.
1
Issue 05 (2023-03-31)
If the deviation between A and B is less than 1 dB, it indicates that the fiber is
correctly connected and the attenuation of the fiber is within the normal
range.
If the deviation between A and B is more than 1 dB, make sure the fiber is
fine and correctly routed, and then check whether the fiber terminal is clean.
NO TICE
Description
Working ground, protection ground (including shielding ground and
lightning ground) should be bonded to the same grounding electrode.
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4 Hardware Installation and Parts Replacement
Table 4-16.
436