User's Manual
Table Of Contents
- toc
- RBS Product Description
- 1 Introduction
- 2 Product Overview
- 3 Dimensions
- 4 Space Requirements for MU
- 5 Space Requirements for RRU-N
- 6 Environment
- 7 Hardware Units RBS 2111 Second Generation
- 8 MU Connection Interfaces
- 9 RRU-N Connection Interfaces
- 10 Power System
- 11 Transmission
- 12 External Alarms
- 13 Standards, Regulations and Dependability
- RBS Product Description
- tables
- Table 1 The MU Dimensions
- Table 2 The MU Weight
- Table 3 The MU Colour
- Table 4 The RRU-N Dimensions
- Table 5 The RRU-N Weight
- Table 6 The RRU-N Colour
- Table 7 Times for Cold Startup and Restart
- Table 8 Normal Conditions During Outdoor Operation
- Table 9 Mechanical Conditions During Outdoor Operation
- Table 10 Heat Dissipation
- Table 11 Compliance Boundary Dimensions for General Public (GP)
- Table 12 Characteristics for the Typical Antenna
- Table 13 Total Power to the Antenna for Typical RBS Configuratio
- Table 14 Hardware Units
- Table 15 Standard Hardware Units
- Table 16 MU Connection Interfaces
- Table 17 RRU-N Connection Interfaces
- Table 18 Antenna Connection
- Table 19 DC Supply Voltage Requirements for MU and RRU-N
- Table 20 Fuse Recommendation for MU and RRU-N
- Table 21 Power Consumption
Ericsson Internal
DESCRIPTION 38 ( 46 )
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Figure 26 Connection Interfaces
9.2 –48 V DC Power Interface
The interface accepts a cable area of 2 x 6 mm². The cable gland for the
RRU-N accepts a cable diameter of 6 – 12 mm.
It is recommended to use a cable area of 2 x 6 mm² for power cable lengths
up to 60 m. The maximum voltage drop of the cable should be less than 3 V
DC. A shielded power cable connected to the RRU-N must be used, which is
connected to the ground on both the RRU-N and the power supply equipment
side. Otherwise the overvoltage and lightning protection function of the RRU-N
will fail.
The figure below shows the power interface.