No. Item
4 The cable layout facilitates maintenance and future capacity expansion.
5 All the labels at both ends of the cables are legible.
6 The extra length of the indoor cable ties is cut, and the cut surfaces are smooth
without sharp edges. The extra length of 3 mm to 5mm of the outdoor cable ties is
reserved when the cable ties are cut.
7 The idle port that no cable is connected to is properly protected.
8 The connectors of the RF cables are fixed in position to avoid false connection that
may cause an abnormal voltage standing wave ratio (VSWR).
14.7 Power-On Check
Before a DBS3900 starts operating, you must check the power-on status of the cabinet and
components in it.
CAUTION
The DBS3900 must be powered on within seven days after it is unpacked, and the period for
which the DBS3900 remains powered-off during maintenance must not exceed 48 hours.
Power-On Check in the Indoor Scenario with DC Power Supply (BBU Installed
Indoors and RRU Powered Outdoors)
Figure 14-45 shows the power-on check when a DBS3900 is deployed indoors with DC power
supply, the BBU is installed indoors, and the RRUs obtain outdoor power supply.
DBS3900 (Ver.B)
Installation Guide
14 Indoor Scenario with DC Power Supply (BBU Installed
Indoors and RRU Powered Outdoors)
Issue 06 (2011-09-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
538
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