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COMBA BDA NG Руководство по установке
2

EQUIPMENT CONNECTIONS

2.1

BDA EXTERNAL CONNECTIONS

Identifier
Descriptions
3/4'': Recommended for hybrid cable (provided only from BBU NG) to connect to BBU NG
Knock Out
1'' x 1: Recommended if need to run RF cable from/to the device
1/2'' x 3: Recommended for dry connections or external alarm cables
DT Test
SMA connector for DT port test, -28dB coupling to DT port, available for both downlink and uplink test
MT Test
SMA connector for MT port test, -28dB coupling to MT port, available for both downlink and uplink test
DT
N-Female connector for connection to donor antenna
MT
N-Female connector for connection to service antenna
OMT
RJ45 Connector for local WEB GUI connection
LAN
RJ45 Connector for internet connection
UL/DL
Reserved for Fiber DAS system
Ground Connection
To ensure safe operation of the product, a ground (earth) connection is required. For single phase AC power source, the
product must be grounded by connecting the "earth wire" of the power cord to the ground terminal of the AC supply.
For operating this product with DC power system (such as rectifiers), the product should not be connected to power
systems that switch open the return lead because the return lead could function as the ground (earth) connection for
the equipment.
Protective Ground Connection
The enclosure must be grounded securely by connecting a copper wire (CSA 16mm
equipment/rack, and the other end to a protective ground (i.e., building earth point). An internationally acceptable color
code of the ground connection wire is green/yellow.
Such a ground connection implements the "Protective Ground Connection" and must be connected to the equipment at
the designated ground point. In general, do not connect the supply before establishing an adequate ground (earth)
connection.
Construct the ground wire and use appropriate crimp connectors where necessary. Locate and connect the equipment
grounding terminal to a protective ground (i.e., building earth point).
Figure 10: Equipment Connectors
Table 1: Equipment Connectors
2
) to the grounding terminal on the