Step 4 Attach labels on the optical cable. For details, see Attaching a Sign Plate Label.
Step 5 Coil the optical fiber with winding plastic tape at the end connected to the BBU. The tape is
coiled between the optical connector and the first cable tie on the cabinet, as shown in Figure
11-27.
Figure 11-27 Coiling the optical fiber with winding plastic tape
----End
11.4.8 Installing a GPS Clock Signal Cable
The GPS clock signal cable is an optional cable that transmits GPS clock signals from the GPS
antenna system to the BBU. The GPS clock signals serve as the clock reference of the BBU.
Context
NOTE
Only a dual-satellite receiver needs to be installed onsite.
Procedure
Step 1 Remove the two M3 screws on the panel, and then pull out the USCU, as shown in Figure
11-28.
Figure 11-28 Removing the USCU.
Step 2 Install a satellite receiver on the USCU, as shown in Figure 11-29.
1. Remove the three M1.6 screws from the USCU.
DBS3900 (Ver.B)
Installation Guide
11 Indoor Scenario with DC Power Supply (BBU Installed
on a Wall)
Issue 06 (2011-09-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
395
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