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Installing eRRU Cables
e
Installing a CPRI optical fiber
1. Lower the puller of the optical module, insert an optical module into the CPRI0/IR0 port on the
RRU, and raise the puller.
CAUTION
• The optical modules to be installed must match CPRI rates.
• The two optical modules connected to the same optical fiber must of the same specification.
• The performance of an optical module that is exposed to air for more than 20 minutes may be abnormal.
Therefore, you must insert an optical fiber into an unpacked optical module within 20 minutes.
2. Remove the optical fiber cap and connect one end of the optical fiber to the optical module
on the RRU. If one optical fiber is used, the port connected to the optical module is
CPRI0/IR0 by default.
3. Connect the other end of the optical fiber to the optical module on the BBU.
4. Lay out the cable and bind the cable using cable ties.
5. Label the installed cable.
CAUTION
Install the optical fiber in the cable clip near the power cable to leave some slack at the bend.
Tighten the screws on the cable clip to 1.4 N· m.
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