EN/LZT 720 0224 Uen R2A DCCU DC Connection Unit Unit Description The DC Connection Unit (DCCU) distributes primary power to the Power Supply Units (PSU).
DCCU Contents 2 (4) 1 Product Overview 3 1.1 Main Functions 3 2 Dimensions 3 3 Function Description 3 4 Interfaces 3 4.
DCCU 1 Product Overview 1.1 Main Functions The DCCU distributes primary power to the PSUs and it has the following functions: 2 • Terminates incoming DC supply cables • Disconnects incoming DC supply • Filters ElectroMagnetic Compatibility (EMC) Dimensions The physical characteristics of the DCCU are shown in the table below. Table 1 DCCU Size and Weight Height Width Depth Weight 293.5 mm 141 mm 60 mm 5 kg (1) (1) Including cables.
DCCU 0 -48 0 -48 0 -48 0 -48 1A 1B 2A 2B 3A 3B 4A 4B PSU1 PSU2 PSU3 PSU4 0 is -48 V DC return P011845A Figure 1 4.1 Connection Terminals Signal and Power Interfaces Input Data The input data for the DCCU is shown in the table below. Table 2 Input Data Voltage -40 to -72 V DC External Fuses 4 pcs, max. 40 A Cable Diameter 4.5 – 7 mm Conductor Area 6 – 10 mm2 Number of Conductors 2/cable Output Data The output data for the DCCU is shown in the table below.
EN/LZT 720 0485 Uen R1A DCCU-02 DC Connection Unit Unit Description The DC Connection Unit (DCCU) distributes primary power to the Power Supply Units (PSU).
DCCU-02 Contents 2 (4) 1 Product Overview 3 1.1 Main Functions 3 2 Dimensions 3 3 Function Description 3 4 Interfaces 3 4.
DCCU-02 1 Product Overview The DCCU distributes primary power to the PSU. 1.1 Main Functions The DCCU has the following functions: 2 • Terminates incoming DC supply cables • Filters ElectroMagnetic Capability (EMC) Dimensions The dimensions of the DCCU are shown in the table below. Table 1 Size and Weight Height Width Depth Weight 293.5 mm 141 mm 60 mm 5 kg (1) (1) Including cables.
DCCU-02 0 -48 0 -48 1A 1B 2A 2B PSU1 PSU2 0 is -48 V DC return P012303A Figure 1 4.1 Connection Terminals Signal and Power Interfaces The tables below show input and output data. Table 2 Voltage -40 – -72 V DC External Fuses 2 pcs, max. 40 A Cable Diameter 4.5 – 7 mm Conductor Area 6 – 10 mm2 Number of Conductors 2/cable Table 3 Ericsson AB SE-164 80 Stockholm Sweden asq.us@ericsson.
EN/LZT 720 0301 Uen R3A DC/DC Converter +24 V DC to -48 V DC Unit Description The DC/DC converter in the RBS 2106 converts +24 V DC to -48 V DC, with an output power of 200 W. DC/DC-200W Fault Oper.
DC/DC Converter Contents 2 (6) 1 Product Overview 3 1.1 Main Functions 3 2 Dimensions 3 3 Power Consumption and Heat Generation 3 4 Function Description 3 5 Interfaces 4 5.1 Signal and Power Interfaces 5 5.
DC/DC Converter 1 Product Overview The DC/DC converter converts +24 V DC battery voltage to regulated -48 V DC. The output power capacity is 200 W. 1.1 Main Functions The DC/DC converter has the following main functions: 2 • Converts voltage • Limits current • Regulates voltage • Protects from overvoltage and undervoltage • Indicates alarms Dimensions This section describes the physical characteristics of the DC/DC converter.
DC/DC Converter Input +24 V Output -48 V DC Output -48 V DC Input ALARM Control Circuit Output Alarm Input Stop P009809B Figure 1 DC/DC Converter Block Diagram The unit is a switched converter that converts +24 V DC battery voltage to regulated -48 V DC. The converter can be connected in parallel with other converters to operate continuously in current limitation mode. The current limitation is set to 100 – 115% of the rated current (4.0 A), above which the output voltage drops.
DC/DC Converter 5.1 Signal and Power Interfaces Input Data The input data is shown in the table below. Table 3 Input Data Nominal Voltage +24 V DC Permitted Variations +18.0 ±0.5 to 29.0 ±0.5 V DC Default Start Level +23.5 ±0.2 V DC Default Undervoltage Stop Level +18.5 ±0.2 V DC Default Overvoltage Stop Level 31.0 ±0.5 V DC Restart Level After Overvoltage 29.0 ±0.5 V DC Rated Power 200 W Output Data The output data is shown in the table below. Table 4 5.
DC/DC Converter Indicators The indicators are shown in the table below. Table 5 EAB SE-164 80 Stockholm Sweden asq.us@ericsson.com 6 (6) Indicators Indicator Colour Input OK Green Output fail Red No part of this document may be reproduced in any form without the written permission of the copyright owner. The contents of this document are subject to revision without notice due to continued progress in methodology, design and manufacturing.
EN/LZT 720 0302 Uen R2A DC Filter for RBS 2106 Filter for External Batteries Unit Description The DC filter unit is the interface for external +24 V DC power supply to the RBS 2106.
DC Filter for RBS 2106 Contents 2 (4) 1 Product Overview 3 1.1 Main Functions 3 2 Dimensions 3 3 Function Description 3 4 Interface 4 4.
DC Filter for RBS 2106 1 Product Overview The DC filter is the interface between a +24 V DC external power supply, such as a battery, and the Internal Distribution Module (IDM) inside the RBS 2106. 1.
DC Filter for RBS 2106 This unit filters the incoming +24 V DC power supply to conform with the internal requirements of the RBS 2106. The filter consists of a coaxial feed-through capacitor. The capacitor provides full 360 earthing around the cable. The DC filter is an EMC barrier against the outside electrical environment, and a mechanical barrier against the outside climatic environment. 4 Interface 4.
EN/LZT 720 0241 Uen R2A DC Filter-01 for RBS 2206 Description The DC filter is the interface for +24 V DC supply to the cabinet.
DC Filter-01 for RBS 2206 Contents 2 (4) 1 Product Overview 3 1.1 Main Functions 3 2 Dimensions 3 3 Function Description 3 4 Interface 4 4.
DC Filter-01 for RBS 2206 1 Product Overview 1.1 Main Functions The DC filter has the following main functions: 2 • Provides the interface for +24 V DC supply to the cabinet • Distributes +24 V DC to the Internal Distribution Module (IDM) Dimensions The dimensions of the DC filter are shown in the table below. Table 1 Size and Weight Height Width Depth Weight 293.5 mm 164 mm 70 mm approx. 6 kg (1) (1) Including cables.
DC Filter-01 for RBS 2206 4 Interface 4.1 Signal and Power Interfaces The DC filter has the following external interfaces: • Two input terminals for 70 – 185 mm2 • Pull-relief clamps for incoming power cables with diameter 14 – 26 mm • Two 70 mm2 output cables Table 2 Ericsson AB SE-164 80 Stockholm Sweden asq.us@ericsson.com 4 (4) Input Data Input Voltage Nominal +24 V DC Range 20.0 – 29.0 V DC Non-destructive Range 0.0 – +32.
EN/LZT 720 0488 Uen R1A DC Filter-04 for RBS 2207 Description The DC filter is the interface for +24 V DC supply to the cabinet.
DC Filter-04 for RBS 2207 Contents 2 (4) 1 Product Overview 3 1.1 Main Functions 3 2 Dimensions 3 3 Function Description 3 4 Interface 4 4.
DC Filter-04 for RBS 2207 1 Product Overview 1.1 Main Functions The DC filter has the following main functions: 2 • Provides the interface for +24 V DC supply to the cabinet • Distributes +24 V DC to the Internal Distribution Module (IDM) Dimensions The dimensions of the DC filter are shown in the table below. Table 1 Size and Weight Height Width Depth Weight 293.5 mm 164 mm 70 mm approx. 3 kg (1) (1) Including cables.
DC Filter-04 for RBS 2207 4 Interface 4.1 Signal and Power Interfaces The DC filter has the following external interfaces: • Two input terminals for 16 – 150 mm2 • Pull-relief clamps for incoming power cables with diameter 10 – 26 mm • Two 35 mm2 output cables Table 2 Ericsson AB SE-164 80 Stockholm Sweden asq.us@ericsson.com 4 (4) Input Data Input Voltage Nominal +24 V DC Range 20.0 – 29.0 V DC Non-destructive Range 0.0 – +32.
EN/LZT 720 0242 Uen R2A dTRU Double Transceiver Unit Unit Description The double Transceiver Unit (dTRU) is a 2-TRX replaceable unit. A TRX is a transmitter/receiver and signal-processing unit, which transmits and receives one carrier.
dTRU Contents 2 (8) 1 Product Overview 3 1.1 Main Functions 3 1.2 Variants 3 2 Dimensions 3 3 Power Consumption and Heat Generation 4 4 Function Description 4 4.1 CPU System 5 4.2 DSP System 6 4.3 Radio Control System 6 4.4 Radio System 6 5 Interfaces 6 5.1 Signal and Power Interfaces 7 5.
dTRU 1 Product Overview The dTRU is a 2-TRX replaceable unit. A TRX is a transmitter/receiver and signal-processing unit, which transmits and receives one carrier. There are different versions of dTRU depending on the frequency band and modulation capability, that is, both GMSK and 8PSK (EDGE) or GMSK only. The dTRU has two TX antenna terminals and four RX antenna terminals. The dTRU features a built-in hybrid combiner.
dTRU 3 Power Consumption and Heat Generation Table 2 4 Figure 1 4 (8) Power Consumption and Heat Generation Max. power consumption Max.
dTRU Figure 2 Block diagram of the dTRU with switching relay The TRU consists of the following main blocks: 4.1 • CPU system • DSP system • RC system • Radio system CPU System The CPU system is a control unit in the RBS. It consists of a CPU, support logic, memory and logic for handling the interfaces.
dTRU 4.2 DSP System The DSP system performs all baseband signal processing necessary for one TRX. For downlink, this includes Terrestrial Protocol Handling (TPH), encoding, ciphering and burst generation. For uplink it includes equalization, combining, decoding and TPH. 4.
dTRU 5.1 Signal and Power Interfaces The Y link, CDU TX control bus and connectors are located on the back of the dTRU. 5.
dTRU Ericsson AB SE-164 80 Stockholm Sweden asq.us@ericsson.com 8 (8) No part of this document may be reproduced in any form without the written permission of the copyright owner. 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 damage of any kind resulting from the use of this document.
EN/LZT 720 0244 Uen R3A DXU-21 Distribution Switch Unit Unit Description The Distribution Switch Unit (DXU) is a unit, which acts as an interface between the transmission network and the transceivers. It also extracts timing information from the transmission interfaces and generates a timing reference for the RBS.
DXU-21 Contents 2 (10) 1 Product Overview 3 1.1 Main Functions 3 1.2 Variants 3 2 Dimensions 3 3 Power Consumption and Heat Generation 4 4 Function Description 4 4.1 CPU System 5 4.2 Communication Switch System 6 4.3 Transmission Interface Controller 6 4.4 Power Supply 6 4.5 Timing System 6 4.6 Miscellaneous Logic 6 4.7 Compact Flash Card 6 5 Interfaces 7 5.1 Signal and Power Interfaces 7 5.
DXU-21 1 Product Overview The DXU-21 is a Replaceable Unit (RU), which acts as an interface between the transmission network and the transceivers. It also extracts timing information from the transmission interfaces and generates a timing reference for the RBS. The DXU also performs supervisory tasks. The DXU-21 transmission interface has long-haul capability and can be configured to both 1.544 Mbit/s (T1) and 2.048 Mbit/s (E1) transmission interface modes. 1.
DXU-21 Table 1 3 Height Width Depth Weight 227 mm (6 HE x 44.45 mm 71 mm (14 TE x 5.08 mm) 240 mm 2.
DXU-21 DXU 13 MHz test *) Part of timing system OVCXO+DAC Compact Flash Card Interface CPU System OPT-inputs OPT-outputs External alarms Vcc for backplane memory Indicators and buttons IOM-bus Ext. Sync. Source (GPS) Cabinet LEDs Ext. Sync. Source (ESB) Rack/Shelf/unit pos Ext. O&M *) O&M Terminal (OMT) Timing bus EPC bus Transm. lines G.703-A Local bus G.703-B Transm. Interface Controller G.703-C Local bus Communication switch system G.
DXU-21 4.2 • I2C controller • SDRAM memory • FLASH memory • CPU • Compact Flash Card Communication Switch System This system block contains circuits that handle traffic between the BSC and the dTRUs. 4.3 Transmission Interface Controller This part contains circuits for four transmission ports and the transmission interface controller, which controls the traffic for all four transmission ports. The bit rate is SW controlled. Two speeds are available: E1 (2.048 Mbit/s) or T1 (1.544 Mbit/s). 4.
DXU-21 5 Interfaces This section describes the signal and power interfaces, and the operator interface, of the DXU. 5.1 Signal and Power Interfaces Transmission Interface The four transmission interfaces are connected to the BSC (Protocol GSM-Abis) or to cascaded base stations. In cascade mode, this interface can control an external bypass relay. Unused time slots can be through-connected to a successive base station. The communication speed in E1 interfaces is 2 Mbit/s and in T1, 1.5 Mbit/s.
DXU-21 External Sync. (Freq. Ref.) This interface is used for connecting an external frequency reference. It uses a generic synchronization port for the synchronization information. Optional Output This interface enables control of up to eight devices, which can be of various types. These outputs are accessed through the upper backplane connector. Optional Input This interface enables connection of up to eight internal cabinet signals, such as alarms.
DXU-21 ESB This interface is used to synchronize several transceiver groups in the same cell, for example when one cell is built up by more than one RBS. The interface is accessed on the front of the DXU through a D-sub 9-pin male connector marked ‘‘ESB’’. 5.2 Operator Interface This section describes the operator interface, which consists of the OMT interface and indicators and buttons. OMT The OMT port is used to communicate with the Operation and Maintenance Terminal.
DXU-21 Table 4 Indicator Colour Fault Red Operational Green Transmission OK (port A, B, C, D) Green (4 pcs) Local Yellow RBS fault Yellow External alarm Yellow EPC bus fault Yellow Battery mode (only DXU-21A) Yellow EOM bus fault (only DXU-21) Yellow Table 5 Ericsson AB SE-164 80 Stockholm Sweden asq.us@ericsson.
EN/LZT 720 0246 Uen R2A FCU-01 Fan Control Unit Unit Description The Fan Control Unit (FCU-01) controls and supervises the fans in the RBS 2206. Its indicators display fan status information.
FCU-01 Contents 2 (6) 1 Product Overview 3 1.1 Main Functions 3 2 Dimensions 3 3 Function Description 3 4 Interfaces 4 4.1 Signal and Power Interface 4 4.
FCU-01 1 Product Overview The FCU-01 controls and supervises the fans in an RBS cabinet. 1.1 Main Functions The FCU-01 has the following main functions. 2 • Controls and supervises fans • Generates alarms • Man-Machine Interface (MMI) for the fans Dimensions The physical characteristics of the FCU-01 are shown in the table below. Table 1 3 FCU-01 Size and Weight Height Width Depth Weight 195 mm 98 mm 45 mm 0.
FCU-01 4 Interfaces The FCU-01 has the following interfaces: 4.1 • Power in • EPC bus in • EPC bus out • Fan power and alarms (1 – 4) Signal and Power Interface Input Data The input data is shown in the table below. Table 2 Input Data Nominal Input Voltage +24.0 V DC Input Voltage Range +19.0 to +29.0 V DC Non-destructive Voltage 0.9 to +32.0 V DC Input Power 4 x 45 W Output Data The output data is shown in the table below. Table 3 4.2 Output Data Output Voltage 9 to 28.
FCU-01 Table 4 No Alarm Alarm pos. Upos 5 – 30 V DC Alarm neg. Upos
FCU-01 Ericsson AB SE-164 80 Stockholm Sweden asq.us@ericsson.com 6 (6) No part of this document may be reproduced in any form without the written permission of the copyright owner. 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 damage of any kind resulting from the use of this document.
EN/LZT 720 0449 Uen R2A HCU Hybrid Combiner Unit Unit Description The Hybrid Combiner Unit (HCU) combines the signals from two double TRansceiver Units (dTRU) into a common output, thus expanding capacity without increasing the number of antennas.
Hybrid Combiner Unit HCU Contents 2 (6) 1 Product Overview 3 1.
HCU 1 Hybrid Combiner Unit Product Overview The HCU contains three hybrid combiners. Each hybrid combines two RF signals, delivered from the dTRU, into one. This signal is then passed to the Combining and Distribution Unit (CDU), and provides an expanded capacity using a minimum number of TX/RX antennas. (It is unnecessary to increase the number of TX antennas or to build a new site.) The HCU covers both the GSM 800 and GSM 900 standards. The insertion loss is up to 3.3 dB. 1.
Hybrid Combiner Unit HCU for the transmitted signal. If further combining is required, the HCU must be introduced. The HCU can combine the already combined signal from two dTRUs into a common output. The benefit is that it is possible to expand capacity without increasing the number of antennas. Synthesizer hopping is supported, and using a HCU with a CDU-G makes synthesised frequency hopping possible. The drawback is that the output power is reduced by half.
HCU Hybrid Combiner Unit Input Data The input data is shown in the table below. Table 3 Input Ports Port Marking Input 1, 3, 4, 6, 7, 9 TRU1 to TRU6 Output Data The output data is shown in the table below. Table 4 Output Ports Port Marking Output 2, 5, 8 CDU1 TX1, CDU2 TX1, CDU3 TX1 Indicators The HCU does not have any indicators.
Hybrid Combiner Unit HCU Ericsson AB SE-164 80 Stockholm Sweden asq.us@ericsson.com No part of this document may be reproduced in any form without the written permission of the copyright owner. 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.