Huawei DBS3900 Installation Manual page 530

DBS3900 (Ver.B)
Installation Guide
Figure 14-22 Marking mounting holes
(1) Marking template
Step 2 Drill holes at the anchor points, and then install expansion bolt assemblies, as shown in
14-23.
Figure 14-23 Installing an expansion bolt
(1) Bolt
Step 3 Align the holes on the trapezoidal rack with the four lower mounting holes on the wall, and then
use four M12×30 bolts to secure the trapezoidal rack, as shown in
Issue 06 (2011-09-15)
(2) Spring washer
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14 Indoor Scenario with DC Power Supply (BBU Installed
Indoors and RRU Powered Outdoors)
(2) Mounting holes
(3) Flat washer
Figure
(4) Expansion tube
Figure 14-24.
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