No. Item
7 The cables are neatly and tightly bound. The cable ties are evenly spaced and
face the same direction.
8 The power cable, PGND cable, feeder, optical cable, and the E1/T1/FE cable
are bound separately with spacing of more than 30 mm.
9 The cable layout facilitates maintenance and future capacity expansion, and
the bending radius of the cable meets the requirements.
10 Legible labels are attached to both ends of all cables.
11 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 5 mm of the outdoor cable
ties is reserved when the cable ties are cut.
12 The unused ports are properly protected.
8.7 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 Outdoor Scenario with DC Power Supply (BBU Installed
in a +24 V DC APM30H)
Figure 8-79 shows the power-on check when a DBS3900 is deployed outdoors with DC power
supply and the BBU is installed in a +24 V DC APM30H.
DBS3900 (Ver.B)
Installation Guide
8 Outdoor Scenario with DC Power Supply (BBU Installed
in a +24 V DC APM30H)
Issue 06 (2011-09-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
281
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