Figure 12-19 Coiling the optical fiber with winding plastic tape
----End
12.4.5 (Optional) Installing a Monitoring Signal Cable for the
EMUA
A monitoring signal cable for the EMUA transmits monitoring signals from an EMUA to a BBU.
Context
A BBU provides ports for a maximum of four Boolean inputs and four RS485 inputs. If the
number of Boolean inputs or RS485 inputs exceeds the specifications, an EMU or EMUA must
be configured. For details, see BBU Monitoring Port and Monitoring Schemes of the APM30
or APM30H (Ver.A).
Procedure
Step 1 Install a monitoring signal cable for the EMUA, as shown in Figure 12-20.
1. Link the RJ45 connector at one end of the monitoring signal cable to the MON0/MON1
port on the UPEU in the BBU.
2. Link the DB9 male connector at the other end to the EMUA.
DBS3900 (Ver.B)
Installation Guide
12 Indoor Scenario with DC Power Supply (BBU Installed in
a 19-Inch Rack)
Issue 06 (2011-09-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
423
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