l
If, for no apparent reason, optical signals are lost during the operation of a device, use the
preceding method to clean the receptacle or the optical connector. This will eliminate
contamination as the cause of the signal loss.
Precautions for the overload-caused burnt optical module
l
When using an OTDR to test the connectivity or the attenuation of optical signals,
disconnect the optical connector from the optical module. Otherwise, the optical module
may be burnt.
l
When performing a self-loop test, use an optical attenuator. Do not loosen the optical
connector.
l
It is required that a long-distance optical module have an input optical power of less than
-7 dBm. If the input optical power is larger than -7 dBm, you need to add an optical
attenuator. For example, if the transmiting optical power is X dBm and the optical
attenuation is Y dB, the receiving optical power is X-Y, which must be smaller than -7dBm
(X-Y<-7 dBm).
Other precautions
l
The optical connector should be horizontally inserted in the receptacle to avoid damages
to the receptacle.
l
Mixed use of multi-mode and single-mode optical fibers is prohibited. Otherwise, faults
such as signal loss may occur.
D.2 155Mbps SFP Electrical Transceiver
The 155Mbps SFP electrical transceiver can be applied to the 155M POS/cPOS interfaces. An
electrical transceiver can be used to connect optical interfaces and electrical interfaces.
lists the currently available 155–Mbit/s electrical transceivers.
HUAWEI CX600-X1-M/CX600-X2-M Series Metro
Services Platform
Hardware Description
D Optical Module
Issue 03 (2014-04-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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