EN/LZT 720 0327/3 Uen R1A RBS 2308 Micro RBS Product Description The RBS 2308, a member of the RBS 2000 family, is a 4 TRX radio base station for indoor or outdoor use. E P010083A 1 (30) Micro RBS RBS 2308 Contents 1 1.1 1.2 1.3 2 3 4 4.1 4.2 4.3 5 5.1 5.2 6 6.1 6.2 6.3 6.4 7 7.1 7.2 7.3 7.4 8 9 10 10.1 10.2 11 Product Overview Main Features Variants Optional Equipment Dimensions Space Requirements Environment Operating Environment Environmental Impact Materials Hardware Units Standard Hardware Units Optional Hardware Units Interfaces External Connections Internal Interface OMT Interface Operator interface Power System Power Supply Battery Back-up Output Power Power Consumption Transmission External Alarms Standards, Regulations and Dependability Safety Standards Other Standards and Regulations Vandal Resistance 3 3 3 4 5 7 8 8 9 9 10 10 12 13 13 19 20 20 24 24 25 25 25 27 27 28 28 28 29 2 (30) EN/LZT 720 0327/3 Uen R1A RBS 2308 Micro RBS 1 Product Overview The RBS 2308 is an outdoor micro base station. It can be used for indoor or outdoor applications, with four transceivers (TRX). The cabinet can be mounted on walls, poles or masts. The RBS 2308 is designed for use with BSS R9.1C or later. It supports GPRS
(CS-1, CS-2, CS-3, and CS-4), HSCSD, and EGPRS in the Micro concept. Main applications of the RBS 2308 are:
Hot spots, adding supplementary coverage Providing EDGE capacity Public meeting places, supplying additional capacity in dense areas Replacement of existing RBS 2302 sites where higher capacity is required. 1.1 Main Features The RBS 2308 can support, among others, the following features:
Scalable up to 12 TRXs EDGE External alarms
Multidrop by-pass Positioning with GPS/LMU Power supply for MINI-LINK E Micro or LMU Synchronized networks 1.2 Variants The RBS 2308 can support the following frequencies:
GSM 1900
GSM 800 EN/LZT 720 0327/3 Uen R1A 3 (30)
Micro RBS RBS 2308 1.3 Optional Equipment The equipment listed below is available, but is not necessary for basic operation:
Fan unit Mast-mounting fixtures Multicasting Box (MCB) RX Bandpass Filter (RXBP) 4 (30) EN/LZT 720 0327/3 Uen R1A
RBS 2308 Micro RBS 2 Dimensions This section describes the RBS 2308 dimensions, space requirements and colour. Size and Weight The dimensions of the basic RBS 2308 cabinet (without options) are shown in the figure and table below. 610 430 220 Unit of measurement: mm Figure 1 RBS 2308 dimensions P010098B Use of the fan will increase the height of the cabinet, see table below. Table 1 Maximum dimensions with and without fan Dimension Basic RBS 2308 Height Width Depth
(1) With fan unit.
(2) With RXBP. 610 mm 433 mm 224 mm RBS 2308, maximum dimensions 742 mm(1) 433 mm 270 mm(2) The weights of the RBS 2308 and of the major units to be handled are given in the table below. EN/LZT 720 0327/3 Uen R1A 5 (30) Micro RBS RBS 2308 Table 2 Weights of RBS 2308 and major units Unit IXU MBU RRU Sunshield Total Colour Weight 9.5 kg 6.5 kg 23.5 kg 1.5 kg 41 kg The RBS 2308 is available in grey (reference number NCS S2502R). 6 (30) EN/LZT 720 0327/3 Uen R1A RBS 2308 Micro RBS 3 Space Requirements For installation and maintenance, and proper cooling during operation, the space in front of the cabinet must be kept clear for a distance of 500 mm, and there must be at least 250 mm of free space on either side. 300 mm free space is required above the cabinet. The distance between the cabinet and the nearest obstruction below (floor, filing cabinet, another RBS, and so on) must be at least 500 mm. No free space is needed at the back of the cabinet. The figure below shows the minimum space requirements and the dimensions of the RBS in relation to the mounting base (if used). This information can be used to determine a suitable location with respect to other equipment at the site. 139 180 114 500 250 0 0 3 RBS 250 0 0 5 250 7 8 5 0 5 2 433 Minimum space requirements Units of measurement: mm Figure 2 Space requirements Mounting Base Holing Pattern 5 4 1 5 2 2 7 1 2 P010156B The mounting base of the RBS 2308 has the same holing pattern as that of the RBS 2302 mounting base, see Figure 2 on page 7. EN/LZT 720 0327/3 Uen R1A 7 (30) Micro RBS RBS 2308 4 Environment This section provides an overview of the operating environment, environmental impact, and materials used in the RBS 2308. 4.1 Operating Environment The operational temperature limits of the RBS 2308 depend upon the power supply and whether or not the fan is used, see tables below. Table 3 Start-up and operational requirements using AC power RBS 2308 Variant Without optional fan With optional fan Temperature range 33 C to +45 C 33 C to +55 C Relative Humidity 15 100%
15 100%
Table 4 Start-up and operational requirements using DC power RBS 2308 Variant Start-up Operational, without optional fan Operational, with optional fan Temperature range 0 C to +45 C 15 C to +45 C Relative Humidity 15 100%
15 100%
15 C to +55 C 15 100%
Temperature limits for transport, storage and handling of the RBS 2308 are given in the table below. Table 5 Transport, storage and handling climatic requirements Condition Transport Storage Handling Temperature range 40 C to +70 C 25 C to +55 C 40 C to +70 C Relative Humidity 5 100%
10 100%
5 100%
8 (30) EN/LZT 720 0327/3 Uen R1A RBS 2308 Micro RBS 4.2 Environmental Impact This section describes the effects that the cabinet has on the environment. Heat Dissipation Average heat loads of the RBS 2308 are given in the table below. The exact figures are dependent upon configuration, equipment and site-specific conditions. Table 6 Average heat load Operation Condition Without heating Acoustic Dispersion Average Heat Load 315 W The RBS 2308 cabinet does not contribute to the acoustic noise of its surroundings. The optional fan unit generates acoustic noise. The maximum sound power of the fan unit is given in the table below. Table 7 Average heat load Ambient Temperature
<30 C Maximum operating temperature Sound Power Level 5.5 Bel 6.5 Bel 4.3 Materials All Ericsson products fulfil the legal, market, and Ericsson requirements regarding:
Fire resistance of material, components, wires and cables Declaration of materials Use of restricted materials Recycling EN/LZT 720 0327/3 Uen R1A 9 (30)
Micro RBS RBS 2308 5 Hardware Units A high level of availability is achieved using strict functional modularity in a system of standardised Replaceable Units (RUs). A faulty RU can easily be replaced by a new one. Fan Cover Sunshield Screw plugs Fan RRU Flash Card Sunshield MBU IXU (RBS 2308 Master) TIM RXBP MCB P010530A Figure 3 RBS 2308 overview 5.1 Standard Hardware Units This section briefly describes the standard hardware units required for operation. Flash Memory Card All loadable software and the IDB are stored on this card. The cards contains all information for configuring replacement units if RBS 2308s are exchanged. Number of units: 1 10 (30) EN/LZT 720 0327/3 Uen R1A RBS 2308 Micro RBS IXU Interface and Switching Unit The IXU is in the central control unit for one RBS. All switching of traffic is performed in the IXU. The IXU has integrated power supply and climate control. The Flash Memory Card, the TIM, and all external interfaces except AC/DC power, antennas and the fan unit are located on the IXU. Number of units: 1 MBU Mounting Base Unit The MBU is the mechanical mounting interface for the RBS 2308. It also contains the interface for the main power supply, and provides surge and transient protection for incoming lines. Circuit breakers for primary power and a switch for RRU power are located here. Number of units: 1 4 RRU Remote Radio Unit The RRU contains the transceivers; it handles the combining and distributing functions for the RBS 2308. The RRU has integrated power supply and climate control. The interfaces to the antennas and to the Fan Unit are located on the RRU. Number of units: 1 3 Sunshields The sunshields reduce heat from direct solar radiation and provide a lockable cover to the RBS 2308. Number of units: 1 top, 1 front and 2 side panels per cabinet. TIM Transmission Interface Module The TIM provides an interface to various transmission standards. Different TIMs can be defined for different standards. Currently only E1/T1 is supported. Number of units: 1 EN/LZT 720 0327/3 Uen R1A 11 (30) Micro RBS RBS 2308 5.2 Optional Hardware Units This section describes the RBS 2308 optional hardware units. Fan Unit The fan unit provides addtional cooling to the RBS 2308. It is located on top of the RBS, on the RRU. The fan is controlled by the RRU and receives power from it. Number of units: 0 1 per RRU MCB Multicasting Box The multicasting box provides a single feeder interface for an external antenna/antenna system. Under certain conditions, the multicasting option enables the connection of two antennas/antenna systems for extension of the cell. This configuration would expand the cell to different floors in a building or into a tunnel. The second antenna output on the multicasting box is normally connected to an internal 50 connected to the output. load. As an alternative, a second antenna system can be The MCB units can be connected to the RRU. Number of units: 0 2 per RRU RXBP RX Bandpass Filter (GSM 800 only) The RXBP filters the incoming RX signal, filtering out frequencies outside the RX spectrum in GSM 800. Number of units: 0 1 per RRU Note: The RXBP is currently available only for GSM 800. 12 (30) EN/LZT 720 0327/3 Uen R1A RBS 2308 Micro RBS 6 Interfaces In this section, all external and internal connections are listed, as well as the test interface and the operator interface. Most external connectors enter the cabinet through the bottom of the cabinet. The earthing connection is located on the top of the MBU. Test and operator interfaces are located on cabinet hardware units. Antennas External Internal Fan Unit RRU Y link IXU MBU
. Power supply
. Ext. alarms
. GPS/LMU
. OMT
. DC for MINI-LINK or LMU
. TXL bus
. Transmission Figure 4 Internal and external interfaces P010099B 6.1 External Connections Most external connectors enter the cabinet through the bottom. The earthing connection is located on the top of the MBU, and the OMT connection is on the side of the IXU. External connections for the RBS 2308 include the following:
Antenna interface AC mains and earthing interface DC power supply Transmission interface External alarm interface EN/LZT 720 0327/3 Uen R1A 13 (30)
Micro RBS RBS 2308 OMT interface GPS/LMU signalling interface DC for MINI-LINK or LMU Antenna Connections In GSM 1900, antenna connections are made at the RRU and the MCB. This section describes the antenna connectors located on the RRU and the MCB. Note:
In GSM 800, depending upon configuration, antenna connections are also made at the RXBP, see Page 15. AC/DC power TX(/RX)2 RXBP2 RXBP1 TX(/RX)1 P010113A Figure 5 RRU antenna connections Table 8 Antenna connections ports on the RRU Connector TX(/RX)2 RXBP2 RXBP1 TX(/RX)1 Type of Connector N connector (female) TNC (female) TNC (female) N connector (female) Signal TX/RX or TX RX RX TX/RX or TX 14 (30) EN/LZT 720 0327/3 Uen R1A
RBS 2308 Micro RBS TX(/RX) ANT 1 TX(/RX) ANT 2 MCB 800 LOAD 900 P010139A Figure 6 MCB antenna connection ports Table 9 Antenna connections ports on the MCB Connector TX(/RX) top TX(/RX) side Load Ant 1 Ant 2 Type of Connector N connector (male) N connector (female) N connector (female) N connector (female) N connector (female) RXBP Antenna Connections (800 MHz only) This section is valid for GSM 800 only. For certain configurations, antenna connections are made at the optional RXBP. Antenna connectors on the RXBP are shown in the figure below. RXBP RX 2 RX 1 RXBP 2 RXBP 1 Figure 7 RXBP antenna connection ports EN/LZT 720 0327/3 Uen R1A P010138A 15 (30) Micro RBS RBS 2308 Table 10 Antenna connections ports on the RXBP Connector RX2 RXBP2 RX1 RXBP1 Transmission Type of connector N connector (female) TNC (female) N connector (female) TNC (female) The RBS 2308 has four transmission ports, located in the IXU, see figure below. TIM 4 Transmission ports PORT A PORT C PORT B PORT D P010599A Figure 8 Location of T1 transmission ports in IXU For connection parameters, see the table below. Table 11 Transmission connection parameters Type of connector Cable gland capacity Grounding 6pin, 2.5 mm2 each 6 10 mm diameter Transmission wire screen is grounded. Receive wire screen can be grounded. 16 (30) EN/LZT 720 0327/3 Uen R1A RBS 2308 Micro RBS External Alarms The RBS 2308 is equipped with four external alarms, located in the IXU, see figure below. For external alarm parameters, see Table 12 on page 17. External alarms Figure 9 Location of external alarms in IXU Table 12 External alarm connection parameters Type of connector Cable gland capacity Number of alarms Terminals for 8 x 2.5 mm2 conductors 6 10 mm diameter 4 P010597A Earthing Connection The earthing connection is an M8 screw terminal located on the top of the MBU. EN/LZT 720 0327/3 Uen R1A 17 (30) Micro RBS RBS 2308 MINI-LINK or LMU Power Supply The RBS 2308 can supply DC power to a MINI-LINK E Micro or to an LMU. This interface is located on the IXU, see figure below. DC to MINI-LINK or LMU P010596A Figure 10 Location of MINI-LINK / LMU power supply in IXU Parameters for the MINI-LINK / LMU power supply are given in the table below. Table 13 MINI-LINK / LMU DC supply connection parameters Type of connector Cable gland capacity Terminals for 2 x 2.5 mm2 (maximum) 6 10 mm diameter (Quantity: 1) Note: The maximum cable length between the IXU and the LMU is 5 m. 18 (30) EN/LZT 720 0327/3 Uen R1A RBS 2308 Micro RBS Other External Connections Table 14 Other external connections Connection to Type of Connector Connection Location MBU AC Mains connections DC supply connections Screw terminal for 3 x 5.26 mm2
(maximum) conductors; cable gland capacity 14 mm diameter Screw terminal for 3 x 5.26 mm2
(maximum) conductors; cable gland capacity 14 mm diameter 15 pin D-sub HD, female; see Figure 11 on page 19. IXU GPS/LMU
(synchronisation or positioning) GPS/LMU P010598A Figure 11 GPS/LMU connection port on IXU 6.2 Internal Interface The RBS 2308 uses a Y link internal interface when multiple RRUs are connected to the IXU. Parameters for the Y link are given below. Table 15 Y link connection parameters Type of connector Maximum cable length IEEE-1394 5 m EN/LZT 720 0327/3 Uen R1A 19 (30) Micro RBS RBS 2308 6.3 6.4 OMT Interface The OMT interface for RBS 2308 is located on the right side of the IXU. It is a 9pin D-sub (female) connector. Operator interface The Man-Machine Interface (MMI) in the RBS 2308 is comprised of indicators and buttons located on the hardware units in the cabinet. RRU The table below describes buttons found on the RRU. Table 16 RRU buttons Button RRU Reset Local/Remote Description Resets the RRU. Changes mode between local and remote. The table below describes the RRU indicators, and their meaning when the indicator is on. Table 17 RRU indicators Indicator Fault Operational Local RF off AC power on DC power on RRU temp. Colour Red Green Yellow Yellow Green Green Yellow Description Fault detected on the RRU. At least one TRX is operational in the RRU. RRU is in local mode. No RF to antennas. AC power supply within operational range. DC power supply within operational range. RRU internal temperature is out of range. 20 (30) EN/LZT 720 0327/3 Uen R1A RBS 2308 Micro RBS RRU-M EDGE RRU Reset Fault Operational Local RF off Local/Remote AC power on DC power on RRU temp. P010111A Figure 12 RRU interface panel IXU The table below describes buttons found on the IXU. Table 18 IXU buttons Button IXU Reset Local/Remote Description Resets the IXU and all subunits. Changes mode between local and remote. The table below describes the IXU indicators, and their meaning when the indicator is on. EN/LZT 720 0327/3 Uen R1A 21 (30) Micro RBS RBS 2308 Table 19 IXU indicators Indicator Fault Operational Local RBS fault External alarm EOM bus fault AC power on DC power on IXU temp. Transmission OK:
Port A Transmission OK:
Port B Transmission OK:
Port C Transmission OK:
Port D Colour Red Green Yellow Yellow Yellow Yellow Green Green Yellow Green Green Green Green Description Fault detected on the IXU. IXU is operational. IXU is in local mode. RBS fault detected. One or several external alarms active in the RBS.
(Not used.) AC power supply within operational range. DC power supply within operational range. IXU internal temperature is out of range. Transmission is OK layer 1. Transmission is OK layer 1. Transmission is OK layer 1. Transmission is OK layer 1. 22 (30) EN/LZT 720 0327/3 Uen R1A RBS 2308 Micro RBS IXU-21 IXU Reset Fault Operational Local RBS fault Ext. alarm EOM bus fault Local/Remote AC power on DC power on IXU temp. Transmission OK Port A Port B Port C Port D P010600A Figure 13 IXU interface panel MBU The table below describes switches found on the MBU. Table 20 MBU switches Switch AC on/off DC on/off RRU on/off Description AC power on or off to the RBS DC power on or off to the RBS AC/DC Power on/off to the RRU EN/LZT 720 0327/3 Uen R1A 23 (30) Micro RBS RBS 2308 7 Power System This section provides information on the power system of the RBS 2308. The main characteristics of the RBS 2308 power supply are:
Either alternating current (AC) or direct current (DC), 48 V DC, may be used AC Mains voltage range 100 127 V AC External Power and Battery Cabinet (PBC) may be used 7.1 Power Supply The RBS may be operated on AC or DC power. AC Mains Supply Voltage Single-phase AC is used, voltage range 100 127 V AC. Both 50 Hz and 60 Hz nominal frequencies may be used. Table 21 Power parameters Parameter Nominal voltage Operating voltage Operating frequency Maximum inrush current Short circuit current 50 Hz Nominal Frequency 100 127 V AC 90 140 V AC 45 55 Hz 50 A for 10 ms (typical duration)
< 5 kA 60 Hz Nominal Frequency 100 127 V AC 90 140 V AC 55 65 Hz 60 A for 10 ms (typical duration)
< 5 kA The following fuses are recommended for AC mains power supply. Table 22 Mains fuses recommendation Cabinet Orientation Vertical Horizontal(1) Recommended Fuse Rating, AC Supply 16 A 20 A
(1) Horizontal mounting requires forced air flow over the RBSs cooling fins. 24 (30) EN/LZT 720 0327/3 Uen R1A
RBS 2308 Micro RBS DC Power Supply The RBS 2308 can be operated on -48 V DC (-40.5 to -57.0 V DC) supply. The following fuses are recommended for DC power supply. Table 23 DC supply fuses recommendation Cabinet Orientation Vertical Horizontal(1)
(1) Horizontal mounting requires forced air flow over the RBSs cooling fins. Recommended Fuse Rating, DC Supply 20 A 25 A 7.2 Battery Back-up The RBS 2308 supports an external Power and Battey Cabinet (PBC). External alarms can be used to detect loss of DC power. For more information about the PBC, see:
PBC Product Description EN/LZT 720 0252 7.3 Output Power The RBS can supply the MINI-LINK or LMU with power according to the table below:
Table 24 Output power characteristics Voltage range Connector type Cable gland capacity
-48 V DC Terminals 2 x maximum 2.5 mm2 6 10 mm diameter (Quantity:1) 7.4 Power Consumption The power consumed by the RBS 2308 in both normal operation and with heating is given in the table below. EN/LZT 720 0327/3 Uen R1A 25 (30) Micro RBS RBS 2308 Table 25 Power consumption, basic cabinet Operational condition Normal operation (no heating) Start-up of heating Continual heating Power consumption, AC supply 360 VA 3200 VA 1000 VA Power consumption, DC supply 320 VA n/a(1) n/a
(1) Heater is fed by AC power. No heating with DC power supply. Power can also be supplied by the RBS 2308 to various external equipment, for example an LMU. The additional power consumed in supplying external equipment is given in the table below. Table 26 Additional power consumption for various options Option Optional fan unit External MINI-LINK External LMU Additional Power Consumption 25 VA 38 VA 52 VA 26 (30) EN/LZT 720 0327/3 Uen R1A RBS 2308 Micro RBS 8 Transmission The RBS 2308 supports the T1 transmission standard. Characteristics of the T1 standard are:
1.5 Mbit 100 B8ZS line code Multidrop Up to ten RBSs can be cascaded using multidrop. RBS 2308 is equipped with multidrop bypass relays. RBSs connected downstream to a faulty RBS 2308 will therefore still receive transmission. 9 External Alarms The RBS 2308 supports a maximum of 4 external alarms, located on the IXU. EN/LZT 720 0327/3 Uen R1A 27 (30)
Micro RBS RBS 2308 10 Standards, Regulations and Dependability In this section a brief overview of standards, type approval and electromagnetic compatibility are stated. 10.1 Safety Standards In accordance to the market requirements, the RBS 2308 complies with the following product safety standards:
73/23/EEC Low voltage directive IP 55 according to IEC 60529 EN 60950 / IEC 60950 EN 60215 / IEC 60215 UL 1950, harmonised with CSA 22.2 No. 950 Enclosure type 3R class according to UL 50 and CSA 22.2 No. 94 10.2 Other Standards and Regulations Marking The product is marked with signs to show compliance with product safety standards. Type Approval Standards The RBS 2308 complies with the North America market requirements regarding radio performance. The product has the FCC sign to show compliance to the legal requirements. Electromagnetic Compatibility (EMC) The RBS 2308 complies with the North America market requirements regarding EMC. The product has the FCC sign to show compliance to the legal requirements. Dependability The RBS 2308 is designed for a technical lifetime of 20 years (24hour operation) at an average ambient temperature of +25 C. 28 (30) EN/LZT 720 0327/3 Uen R1A
RBS 2308 Micro RBS 11 Vandal Resistance The RBS 2308 fulfils Ericssons requirements for vandal resistance. EN/LZT 720 0327/3 Uen R1A 29 (30) Micro RBS RBS 2308 Ericsson AB SE-164 80 Stockholm Sweden implementation.GSMsupport@era.ericsson.se The contents of this document are subject to revision without notice due to continued progress in methodology, design and manufacturing. Ericsson shall have no liability for any error or damages of any kind resulting from the use of this document. Ericsson 2003 All Rights Reserved 30 (30) EN/LZT 720 0327/3 Uen R1A