Huawei LUNA2000-2.0MWH Series Quick Manual page 29

Installing Signal Cables (Optical Fiber Communication)
5.8
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Only professionals are allowed to connect and splice optical cables.
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In the optical fiber chain networking, two optical cables are required.
1. Remove the external mechanical parts from the Access Terminal Box (ATB).
Some models do not have the external mechanical parts of the ATB.
2. Remove the optical cable
fastener.
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