ZXSDR R8978 TDD 8 Path Remote Radio Unit User Manual Version: V5.10 ZTE CORPORATION No. 55, Hi-tech Road South, ShenZhen, P.R.China Postcode: 518057 Tel: +86-755-26771900 Fax: +86-755-26770801 URL: http://support.zte.com.cn E-mail: support@zte.com.
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Contents About This Manual ......................................................................................... I Chapter 1 FCC Related Statements .......................................................... 1-1 Chapter 2 Product Overview ..................................................................... 2-1 2.1 Product Positioning ............................................................................................ 2-1 2.2 Product Features.......................................................
.6 Parts Replacement............................................................................................. 4-6 4.6.1 Replacing the ZXSDR R8978.................................................................... 4-6 4.6.2 Replacing the Optical Module.................................................................... 4-7 4.6.3 Replacing the RF Cable............................................................................ 4-8 Chapter 5 Accessory Devices ............................................
About This Manual Purpose This manual describes the software and hardware structures, interfaces and cables, functions, features, technical specifications, installation modes, networking, and maintenance methods of the ZXSDR R8978. Intended Audience This manual is intended for: l l l Base station installation engineers Base station commissioning engineers Base station maintenance engineers What Is in This Manual This manual contains the following chapters.
Caution: indicates a potentially hazardous situation. Failure to comply can result in moderate injury, equipment damage, or interruption of minor services. Note: provides additional information about a topic. II SJ-20140808143736-001|2014-10-30 (R1.
Chapter 1 FCC Related Statements Warning! Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
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Chapter 2 Product Overview Table of Contents Product Positioning ....................................................................................................2-1 Product Features........................................................................................................2-2 External View .............................................................................................................2-2 Product Specifications ....................................................................
ZXSDR R8978 User Manual 2.2 Product Features Unified Platform The ZXSDR R8978 is developed based on the unified SDR platform, which supports smooth evolution to new technologies in the future, and protects the operators' investment in maximum. Energy conservation and environmental protection l l l Designed with high-efficiency power amplifier technologies: Crest Factor Reduction (CFR), Digital Pre-Distortion (DPD) and Doherty to reduce equipment's power consumption.
Chapter 2 Product Overview Figure 2-2 External View 2.4 Product Specifications The ZXSDR R8978 is an eight-channel RRU that an be used for networking TD-LTE macro cells. In this manual, all the descriptions for the ZXSDR R8978 are applicable to the following specifications unless specially stated: l l l ZXSDR R8978 S2300 ZXSDR R8978 S2600 ZXSDR R8978 S2600M 2.4.1 ZXSDR R8978 S2300 For the key features of the ZXSDR R8978 S2300, refer to Table 2-1.
ZXSDR R8978 User Manual Item Description Signal bandwidth 80 MHz Maximum power output in each channel 20 W Power input DC: -48 V DC AC: 100 V AC/110 V AC/220 V AC 2.4.2 ZXSDR R8978 S2600 For the key features of the ZXSDR R8978 S2600, refer to Table 2-2. Table 2-2 Key Features of the ZXSDR R8978 S2600 Item Description Radio access mode TD-LTE Frequency band 2575 MHz–2635MHz Antenna Supports 4×4 MIMO dual TRX channels.
Chapter 2 Product Overview 2.5 External Interfaces Figure 2-3 illustrates the external interfaces of the ZXSDR R8978. Figure 2-3 External Interfaces For a description of the external interfaces, refer to Table 2-4. Table 2-4 External Interface Description External Device Description External Interface BBU BBU performs the functions such as GPS Logical interface: Ir interface synchronization, main control, and baseband Physical interface: optical processing.
ZXSDR R8978 User Manual External Device Description External Interface RRU LMT Operates and maintains the RRU at the local Logical interface: not end standardized Physical interface: Ethernet interface Cascade RRU Upstream RRU Logical interface: Ir interface Physical interface: optical fiber interface • External interfaces exclude the power and antenna interface of the RRU. Note: The LMT at the BBU side can operate and maintain multiple RRUs under the BBU.
Chapter 2 Product Overview and engineering. Because the signal passes through fewer intermediate links along the transmission path, the link reliability is much higher. Figure 2-5 shows a star networking solution. Figure 2-5 Star Networking 2-7 SJ-20140808143736-001|2014-10-30 (R1.
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Chapter 3 Product Composition Table of Contents System Structure........................................................................................................3-1 Composition ...............................................................................................................3-2 LED Indicators............................................................................................................3-3 Physical Interfaces and Cables .......................................................
ZXSDR R8978 User Manual 3.2 Composition Figure 3-2 shows the composition of the ZXSDR R8978. Figure 3-2 Product Composition 1. Radiating pin 2. Handle 3. LED indicators l l l l 4. Operation and maintenance cavity 5. Antenna interface 6. CAL/AISG interface 7. Grounding bolt 8. Breathable valve 9. EAM/RGPS interface The operation and maintenance cavity contains one DC power interface, two optical interfaces (OPT1 and OPT2), one RRU LMT/test interface (LAM/TST). The equipment has six LED indicators.
Chapter 3 Product Composition Note: The LMT/TST interface is used for ZTE maintenance personnel to perform commissioning and maintenance. 3.3 LED Indicators An indicator indicates the operating status of a device. Figure 3-3 shows the positions of the indicators. Figure 3-3 LED Indicators Table 3-2 describes the LED indicators. 3-3 SJ-20140808143736-001|2014-10-30 (R1.
ZXSDR R8978 User Manual Table 3-2 Indicator Descriptions Name Indication Color Description RUN Operation Green OFF: The system is not powered. indicator ON: The system is powered. The software system is not running. Flashing slowly (ON for 1 s and OFF for 1 s): The system is powered. The software system is being started. Flashing normally (ON for 0.3 s and OFF for 0.3 s): The system is powered. The software system has been started. The communication between the RRU and BBU is normal.
Chapter 3 Product Composition 3.4 Physical Interfaces and Cables 3.4.1 Protective Grounding Cable Function The protective grounding point is located at the bottom of the handle. The protective grounding cable provides protective ground for the system. There are a total of two bolts that provide a grounding connection to the ZXSDR R8978. The grounding bolt can be connected with a dual hole OT terminal that complies with the GR1089 specification.
ZXSDR R8978 User Manual Figure 3-5 Connection of the Protective Grounding Cable Note: The two bolts on the left are used for installing the protective grounding cable. The bolt on the right is only used for fixing and does not connect to any cable. 3.4.2 DC Power Input Cable Function The DC power input interface is located in the operation and maintenance cavity of the ZXSDR R8978. The DC power input cable leads the external DC power into the operation and maintenance cavity of the ZXSDR R8978.
Chapter 3 Product Composition Caution! The 10 mm2 DC power cable cannot be directly connected to the ZXSDR R8978, and needs to be converted to a 4 mm2 DC power cable through a junction box before connecting to the ZXSDR R8978. The ZXSDR R8978 does not have an AC power interface. The AC power should be converted into DC power through the outdoor AC power lightening protection box and then connected to the ZXSDR R8978. External View The DC power cable is a blue-black cable.
ZXSDR R8978 User Manual If... Then... Use the DC power supply If voltage drop occurs due to the distance between the ZXSDR R8978 with a junction box and the indoor DC power lighting protection box, a power cable with a larger diameter size is needed to reduce the voltage drop caused by long distance transmission. A junction box is needed to convert the cables to a different size.
Chapter 3 Product Composition Figure 3-7 Connection of DC Power Input Cable l l l Note: The two cores of the DC power cable End A should be wrapped with a tube terminal. After the tube terminal is crimped and inserted to the dual core DC connector, the DC power cable can be inserted to the dual core DC socket through the DC connector. The End B of the DC power cable is bare and connects to the external power supply. The two ends of the power cable must be made at the site. 3.4.
ZXSDR R8978 User Manual Figure 3-8 Connection of the LMT/TST Interface Cable Note: The LMT/TST interface is used for ZTE maintenance personnel to perform commissioning and maintenance. 3.4.4 Optical Fiber Function The ZXSDR R8978 has two optical interfaces, OPT1 and OPT2. They are located in the operation and maintenance cavity. LC-type optical fiber connectors are supported.
Chapter 3 Product Composition External View The optical fiber uses LC-type connectors. Figure 3-9 shows the external view. Figure 3-9 Optical Fiber Connection End A is connected to the optical ports (OPT1 and OPT2) of the ZXSDR R8978. End B is connected to the BBU/dowstream RRU/upstream RRU. Figure 3-10 illustrates the cable connection. Figure 3-10 Connection of the Optical Fiber 3.4.
ZXSDR R8978 User Manual External View The antenna feeder interface cable is a 50 Ω cable with a diameter of 1/2 in (1 in=25.4 mm). Both ends are N-type male connectors. Figure 3-11 shows the external view. Figure 3-11 Antenna Feeder Interface Cable Connection End A is connected to the ANT interface of the ZXSDR R8978. End B is connected to the corresponding interface of the main antenna feeder. The antenna feeder interface cable is a 1/2 inch jumper. Figure 3-12 illustrates the cable connection.
Chapter 3 Product Composition 3.4.6 CAL/AISG Interface Cable Function The CAL interface is located at the external filter at the bottom of the ZXSDR R8978. It uses a type-N female connector. The CAL interface cable used by the ZXSDR R8978 uses a jumper with a diameter of 1/2 inch. Both ends are N-type male connectors. The CAL interface supports antenna channel calibration and AISG for RET antennas. The CAL interface integrates AISG and antenna calibration.
ZXSDR R8978 User Manual Figure 3-14 Connection of the CAL Interface Cable 3.4.7 EAM/RGPS Interface Cable Function The dry contact (EAM) interface is located at the external filter at the bottom of the ZXSDR R8978. It uses an eight-core round connector. It supports the RGPS functions and one dry contract input to transparently transmit the external device status. The RGPS receiver is located at the GPS receiving antenna.
Chapter 3 Product Composition Figure 3-15 External Cable Connection 3.6 Software Composition The ZXSDR R8978 software system is composed of: l RF management Includes RF main control and RF channel management. l OAM adaptation software Provides an adaptation interface for entire operation and maintenance.
ZXSDR R8978 User Manual Uses a unified architecture design and provides a unified interface for the upper layer. l OS Uses the Linux system independently developed by ZTE. Figure 3-16 shows the software composition of the ZXSDR R8978. Figure 3-16 Software Composition 3-16 SJ-20140808143736-001|2014-10-30 (R1.
Chapter 4 Operation and Maintenance Table of Contents Technical Support.......................................................................................................4-1 Fault Location.............................................................................................................4-2 Equipment Maintenance.............................................................................................4-3 Power On ...............................................................................
ZXSDR R8978 User Manual Figure 4-1 ZTE Technical Support Contact Information 4.2 Fault Location For the fault location methods in routine maintenance, refer to Table 4-1. Table 4-1 Fault Location Methods Maintenance Method Description Checking Alarms and This is the most common method for troubleshooting. By checking the Operation Logs alarm management tab of the operation and maintenance system, you can check the alarms and operation logs.
Chapter 4 Operation and Maintenance Maintenance Method Description l By checking the operation logs in user management, you can trace system parameter modification, locate relevant terminals and operators, and discover the faults caused by manual operations. Performance Analysis By checking the performance management tab, you can create different performance test tasks, generate the relevant performance reports to determine the system performance indexes.
ZXSDR R8978 User Manual 4.4 Power On Caution! Before power on, you need to check the equipment and cable installation in detail, to ensure that all the installation results comply with the engineering installation specifications. Figure 4-2 shows the power-on flow. Figure 4-2 Power-on Flow For a description of the ZXSDR R8978 power-on flow, refer to Table 4-3. 4-4 SJ-20140808143736-001|2014-10-30 (R1.
Chapter 4 Operation and Maintenance Table 4-3 Power-on Steps Item Power-on Steps DC power 1. Turn on the switch of the power distribution unit, and check whether the equipment supply output voltage is in the normal range. 2. Turn on the switch of the indoor DC power lighting protection box of the ZXSDR R8978. Power the ZXSDR R8978 on, and test whether the RRU input voltage is in the normal range. 3. Check whether the BBU indicator or the RRU indicator is normal. AC power 1.
ZXSDR R8978 User Manual 4.6 Parts Replacement 4.6.1 Replacing the ZXSDR R8978 Locate the ZXSDR R8978 faults through observation and analysis, and determine whether to replace the ZXSDR R8978. Replacing the ZXSDR R8978 will interrupt all the services carried by the ZXSDR R8978. Prerequisite l l Verify the hardware type of the faulty ZXSDR R8978. Prepare a proper ZXSDR R8978. The specifications of the proper ZXSDR R8978 must be consistent with the faulty one. Prepare the following tools.
Chapter 4 Operation and Maintenance 10. Tighten the jacking screw clockwise and jack the ZXSDR R8978 chassis. Then, loosen the plate-pressing bolt anti-clockwise. 11. Pull up the ZXSDR R8978 from the pole or wall-mounting bracket, and remove the ZXSDR R8978. 12. Put the faulty equipment into the moisture proof antistatic bag. Label the equipment model, sector ID and fault information on the bag. Put the faulty equipment into the carton and label the same information as the antisatic bag. 13.
ZXSDR R8978 User Manual Tool Function M5 cross screw driver Installs or uninstalls the ZXSDR R8978 maintenance cavity Sticker Marks the connection of the cables to be replaced (after the replacement, all the cables must be reconnected to the place where they were) Moisture-proof antistatic bag Stores the faulty optical module and carton Steps 1. Open the cover of the maintenance cavity by using the M5 screw driver. 2. Paste a label at each end of every optical fiber. 3.
Chapter 4 Operation and Maintenance Tool Function Wrench Installs or uninstalls the RF cable Waterproof tape Provides waterproof protection for the RF cable connector Sticker Marks the connection of the cable to be replaced (after the replacement, the cable must be reconnected to the place where it was) Moisture-proof antistatic bag Stores the faulty RF cable and carton Steps 1. Power off the ZXSDR R8978. 2. Remove the waterproof tape of the RF cable. 3.
ZXSDR R8978 User Manual Figure 4-4 Waterproof Treatment 7. Power on the ZXSDR R8978. 8. The ZXSDR R8978 performs the self-test process after it is powered on. During the self-test, you need to observe the indicator status and perform operations accordingly. 4-10 SJ-20140808143736-001|2014-10-30 (R1.
Chapter 4 Operation and Maintenance If... Then... The indicator is normal, which The self-test and replacement are successful. means that services are restored. The indicator is abnormal, which Troubleshoot the fault and handle the relevant alarms, or means that services are not contact ZTE technical support. restored. – End of Steps – 4-11 SJ-20140808143736-001|2014-10-30 (R1.
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Chapter 5 Accessory Devices Table of Contents Junction Box ..............................................................................................................5-1 AC Power Lightening Protection Box ..........................................................................5-3 Replacing the AC Power Lighting Protection Box .......................................................5-6 5.
ZXSDR R8978 User Manual Specifications Table 5-1 shows the specifications of the junction box. Table 5-1 Junction Box Specifications Name Specification Height × Width × Depth 233 mm × 119 mm × 55 mm (excluding the handle and waterproof cap) Installation Mode For single RRU pole-mounted installation or wall-mounted installation, the junction box can be installed at a side (recommended) or the front of the RRU through an adaptor.
Chapter 5 Accessory Devices Figure 5-3 Interfaces and Cable Connection Interface Name Cable Description INPUT 2×10 mm2 DC power cable OUTPUT 2×4 mm2 DC power cable 5.2 AC Power Lightening Protection Box Function The outdoor AC power lightening protection box is PPC33 A009. It protects the AC current from lightening and coverts AC into the DC that is applicable for the ZXSDR R8978. External View Figure 5-4 shows the external view of the AC power lightening protection box.
ZXSDR R8978 User Manual Figure 5-4 External View Specifications Table 5-2 shows the specifications of the AC power lightening protection box.
Chapter 5 Accessory Devices Figure 5-5 Installation Modes Interfaces and Cable Connection Open the AC power lightening protection box and connect the internal and external cables, see Figure 5-6. Figure 5-6 Interfaces and Cable Connection Name Description -220 AC_L 220 V AC live line -220 AC_N 220 V AV neutral line 5-5 SJ-20140808143736-001|2014-10-30 (R1.
ZXSDR R8978 User Manual Name Description -48 V DC -48 V DC neutral line -48 V DC RTN -48 V DC earth line PE Protective grounding cable 5.3 Replacing the AC Power Lighting Protection Box If the AC power lighting protection box has an abnormal output but the input is normal, it has some faults and should be replaced immediately. Prerequisite l l Verify the hardware type of the faulty AC power lighting protection box. Prepare a proper AC power lighting protection box.
Chapter 5 Accessory Devices 4. Put the faulty equipment into the moisture proof antistatic bag. Label the equipment model, sector ID and fault information on the bag. Put the faulty equipment into the carton and label with the same information as the antisatic bag. 5. Reinstall the proper AC power lighting protection box, fasten the anti-theft screws, and install the mounting plate and cables. Wrap the cables with the water proof tape. 6. Power on the ZXSDR R8978.
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Chapter 6 Technical Specifications Table of Contents Physical Specifications ...............................................................................................6-1 Performance Indexes .................................................................................................6-1 Power Consumption ...................................................................................................6-2 Reliability Indexes .........................................................................
ZXSDR R8978 User Manual Item Index Maximum distance between the outdoor 12 m unit and the antenna Filter Optical module Replaceable Whether the rate is Yes downward compatible Whether the optical Yes module can be replaced on site Optical fiber Rate 2×6 Gbps / 2×10 Gbps Number of cascade One cascade level / 10 km levels / Maximum distance of a cascade level 6.3 Power Consumption Table 6-3 shows the power consumption specifications of the ZXSDR R8978.
Chapter 6 Technical Specifications 6.5 Grounding Requirement In practical applications, the grounding resistance must be less than 10 Ω. 6.6 Lightening and Surge Protection Table 6-5 shows the lightening protection specification of the ZXSDR R8978. Table 6-5 Lightening Protection Specification Item Current Lightening protection specification 20 kA 6-3 SJ-20140808143736-001|2014-10-30 (R1.
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Chapter 7 Environment Requirements Table of Contents Power Supply Requirements ......................................................................................7-1 Operating Environment...............................................................................................7-1 Storage Environment..................................................................................................7-2 7.
ZXSDR R8978 User Manual Item Description Solar radiation 1120 W/m2 Condensation Allowed Precipitation (rain, snow, and hail) Allowed Humidity Wet surface is allowed Freezing and frost Allowed Biological Environment Condition Item Description Plants Mold and fungus are allowed. Animals Rodents and other animals that damage the product are allowed, except termites Chemical Substance Environment Condition Item Description Salt fog Allowed 7.
Chapter 7 Environment Requirements Item Description Freezing and frost Allowed Biologic Environment Condition Item Description Plants Mold and fungus are allowed. Animals Rodents and other animals that damage the product are allowed, except termites Chemical Substance Environment Condition Item Description Salt fog Allowed 7-3 SJ-20140808143736-001|2014-10-30 (R1.
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Figures Figure 2-1 Position of the RRU in a Network ............................................................. 2-1 Figure 2-2 External View........................................................................................... 2-3 Figure 2-3 External Interfaces ................................................................................... 2-5 Figure 2-4 Chain Networking .................................................................................... 2-6 Figure 2-5 Star Networking ...........
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Tables Table 2-1 Key Features of the ZXSDR R8978 S2300................................................ 2-3 Table 2-2 Key Features of the ZXSDR R8978 S2600................................................ 2-4 Table 2-3 Key Features of the ZXSDR R8978 S2600M ............................................. 2-4 Table 2-4 External Interface Description.................................................................... 2-5 Table 3-1 Subsystem Description..............................................................
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Glossary AISG - Antenna Interface Standards Group ALM - Alarm ANT - Antenna BBU - Base Band Unit BSP - Board Support Package CFR - Crest Factor Reduction DIF - Digital IF DL - Down Link DPD - Digital Pre-Distortion EAM - Electro-Absorption Modulation GPS - Global Positioning System IP - Internet Protocol LMT - Local Maintenance Terminal LTE - Long Term Evolution MIMO - Multiple-Input Multiple-Output MTBF - Mean Time Between Failures MTTR - Mean Time To Recovery V SJ-20140808143736-001|2014-10-30 (R1.
ZXSDR R8978 User Manual OAM - Operation, Administration and Maintenance OS - Operating System OSS - Operation Support Subsystem RF - Radio Frequency RGPS - Remote GPS RRU - Remote Radio Unit SDR - Software Defined Radio TCP - Transmission Control Protocol TD - Time Division TELNET - Telecommunication Network Protocol TRX - Transceiver UE - User Equipment UL - Uplink VSWR - Voltage Standing Wave Ratio eNodeB - Evolved NodeB VI SJ-20140808143736-001|2014-10-30 (R1.
