Huawei NetEngine 8000 F User Manual

Optical
Module Type
Maximum
Average
Transmit
Optical
Power
Minimum
Average
Transmit
Optical
Power
Damaged
Optical
Power
Threshold at
the Receive
End
Description
50GBASE-FR 3 -4.1 5.2 The damaged
optical power
threshold is
greater than
the maximum
average
transmit
optical power,
posting low
self-loop risks.
50GBASE-LR 4.2 -4.5 5.2
50GBASE-ER 6.6 0.4 -2.4 The damaged
optical power
threshold is
9dBm lower
than the
maximum
average
transmit
optical power
and 2.8dBm
lower than
the minimum
average
transmit
optical power,
posing high
self-loop risks.
In this case,
an optical
attenuator
must be
congured for
self-loop.
For applications of the 50 Gbps optical module supporting a distance of 40 km:
1. To ensure that the optical module runs stably for a long time, adjust the
receive optical power of the optical module to a value lower than -4 dB.
According to the IEEE 802.3 standard, if the receive optical power of the
optical module exceeds -2.3 dB, the optical module may be permanently
damaged.
2. Before connecting to the optical module, use an optical power meter to
measure the receive optical power (P). If P is less than -4 dB, the optical
module can be directly connected. If P is greater than -4 dB, add an optical
HUAWEI NetEngine 8000 F
Hardware Guide 4 Hardware Installation and Parts Replacement
Issue 05 (2023-03-31) Copyright © Huawei Technologies Co., Ltd. 622

Huawei NetEngine 8000 F Specifications

General

Brand	Huawei
Model	NetEngine 8000 F
Category	Network Router
Language	English