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1. 2 4 Server antenna Installation Find the right spot to install the server antenna so the required coverage can be fully covered by the repeater is one of the most important concepts that need to be considered However the following three points should be considered while installing the server antenna 1 Donotinstall the repeater near metal or obstacles that may influence its coverage performance 2 ltis suggested to install the repeater at least 2m above the floor for the best coverage 3 The server antenna should not be installed to close to the donor antenna to avoid issues with isolation 2 5 Repeater Installation 2 5 1 Installing the Repeater Use the hanger that comes with the repeater package and place the hanger on the wall where repeater is going to be installed use the hole on the hanger to secure the hanger on to the wall A lightening arrestor needs to be connected to the repeater s BTS port when the donor antenna is installed in a high position Grounding is essential for the arrestor to work Plug the power cable to the repeater first before plugging in the power cable to the mains socket Use the power cable that comes with the package TC 3 Commissioning This chapter outlines the process to optimize the performance of the repeater The gain setting isola tion concept and downlink output power 3 1 Downlink Output Power The downlink output power of the repeater mainly depends on the input2. e t o E MobilePartners com 3 MobilePartners MP2110A Operator selectable 3G repeater User s Manual Preface This User Manual provides installation configuration operation and maintenance guidance of the repeater Specifications are also provided at the end of this User Manual in order to help users better understand the repeater Please read this user s manual thoroughly and follow the instructions outlined in chis manual to ensure a long life span and a trouble free repeater unit Warranty Lightning protection must be done for all outdoor antennas Damage to power modules as a result of lightning is not covered by the warranty Switching on the AC or DC power prior to connection of antenna cables is considered as an incorrect installation process and therefore faults arising thereafter are also not covered under the warranty This entire manual should be read and understood before operating or maintaining the repeater system We assume no liability for customer s failure to comply with the precautions mentioned This warranty will not cover such failures to comply Safety Information Do not operate equipment in an explosive environment Appropriate AC or DC power needs to be sup plied to the repeater To avoid power supply spark please perform the grounding connection of the equipment In order to avoid equipment damage or human injury by lightning static electricity and other phenom enon of leakage electricity
3. signal power and the repeater gain The gain is the amplifying indicator for both uplink and downlink in the repeater and it can be adjusted Hence the output power of the repeater can be estimated Signal Input Power DL Gain DL Output Power For any given input signal power its corresponding output is increased by the gain of the repeater To ensure the maximum output power the following condition should be met DL Gain Min DL Output Power Input Power Max DL Gain IF the input signal amplified by the gain set exceeds the rated set output limit the ALC Automatic Level Control will be triggered The ALC ensures that the maximum output power of repeater is maintained at a certain point and does not overdrive the repeaters amplification circuit 3 2 Repeater Configuration The MP2110Aseries repeaters are designed with plug and play ability The configuration for these repeaters is not necessary simply just switch the Smart function on and the repeater would auto adjust its gains according to the environment condition 3 2 1 Start up the Repeater Note It is suggested that only when isolation is 15dB higher than repeater s gain then the repeater can be switched on Make sure power supply cable is connected to the repeater properly and the voltage is within repeat er s voltage working range 110 220V 2096 Plug the power cord into the proper socket Once the repeater is on it requires several seconds for initializati
4. the propagation loss between the donor antenna and the server antenna which needs to be at least 15dB higher than the gain value of the repeater Non compliance to this crite rion would result in poor signal quality or poor signal strength in the coverage area and the amplifier of the repeater may also be damaged Isolation 2 Repeater Gain 15 dB 2 1 1 Self Oscillation Resistance Self oscillation is a phenomenon that would occur when the isolation for the repeater system is not enough In other words insufficient isolation between donor and server antennas would result in self oscillation Which means part of the signal that is being amplified by the repeater radiates back towards the donor antenna and got picked up by the donor antenna and went through the repeater amplification process again Severe oscillation issue would result in poor signal quality and at times it can even damage the repeater amplifiers Self oscillation will deteriorate the signals inside the coverage area and interfere towards the BTS 2 1 2 The Isolation Value The precise estimation of the isolation value can be obtained via a physical test measurement This test measurement is done at the actual environment where the donor antenna and the server antenna are installed for a repeater system The test measurement procedures are 1 Connectthe signal generator to the donor antenna and transmit a signal with a frequency Choose frequency 1995MHz to do the test In simpl
5. we suggest all products must do the electric discharge of the electrical grounding in setup process Incorrect power settings can damage the repeater and may cause electrical related injury to the user Acknowledgment Thank you for purchasing the MP2110A repeater Strict quality control system procedures are imple mented to ensure you a high quality product with numerous cellular operators acknowledging the product to be a high performance low interference transparent and simple to operate and maintain This document is written to the customer service personnel who install configure and commission the repeater system in a cellular network Contents 1 INTRODUCTION 1 1 MP2110ASeries Repeaters 1 2 General Installation Layout 1 3 Advantages 2 INSTALLATION 2 1 Isolation 2 1 1 Self Oscillation Resistance 2 1 2 The Isolation Value 2 2 Precautions and Preparation 2 3 Donor Antenna Installation 2 4 Server antenna Installation 2 5 Repeater Installation 2 5 1 Installing the Repeater 3 COMMISSIONING 3 1 Downlink Output Power 3 2 Repeater Configuration 3 2 1 Start up the Repeater 3 2 2 Repeater Settings 4 MAINTENANCE 4 1 Troubleshooting 1 Introduction 1 1 MP2110ASeries Repeaters The MP2110ASeries Repeater is compact in size and light in weight Hence the installation of the MP2110ASeries Repeater is easy simply just plug and play With the control panel in front of the repeater the repeater status can be known
6. during installation Power Smart AGC 1S0 Figure 1 LED Indicators 1 2 General Installation Layout Yagi Many Repeater Panel Antenna 4 Splitter Omni Antenna Coaxial Cable Figure 1 Profile For indoor application a typical installation layout of the Broad Band Repeater is shown in Figure 1 The Yagi antenna is used as the donor antenna and is connected to the repeater Omni and panel antennas are being used as the server antennas The donor antenna is placed outside of the building while the repeater is placed inside the building to extend radio coverage to the dead zones 1 3 Advantages Fast amp easy Installation The installation of a repeater is easy and simple With its plug and play design installation simplicity and operational user friendliness these features appeal greatly to many operators for the purpose of indoor coverage or for temporary coverage during network optimization MP2110Aseries has a smart function which can be activated via the front panel This smart Function can prevent UL interference and self oscillation caused by insufficient isolation between donor and server antennas and also setup parameters and keep optimal condition automatically the only thing for users is just activating this Function by front panel Note The users can t adjust by manual setting when smart function is active Auto Level Control The 20dB ALC is used to maintain steady output power even
7. e performance characteristics of the RSCP and Ec No of the intended coverage area The donor antenna is usually installed outside of the building pointing towards the donor BTS NodeB For best reception of the receiving signal When choosing the location for the donor antenna there are 3 criteria need to be met 1 The RSCP of the donor signal is suggested to be in the range of 60dBm to 70dBm 2 EC No JAS CPICH gt 7dB AS CPICH is the Pilot Channel in Active Set Serving Cell 3 EC NO AS CPICH Ec No MS_CPICH gt 6dB The donor antenna should be installed at least 3 meters above the ground but not higher than 7th floor of any building If the donor antenna is located at a high floor it would be difficult to obtain a dominant BTS signal from nearby BTS A lightning rod is necessary when the donor antenna is located at a relative high position A 50 ohm light ning arrestor could be connected between repeater and donor antenna for better protection Waterproofing of the antenna installation is also important and it can be done with the following process 1 Usethe donor antenna cable to Form a half loop at the point of entry into the house so that rain water would drop off instead of flowing inside along the cable and also form a half loop before the antenna cable connects to the repeater as the waterproof measure 2 Secure the cable entry point Seal the donor antenna s connector and repeater s connector with a waterproof sealant
8. e words choose the idle frequency of the system to do the test of certain power level from the signal generator 2 Connectthe spectrum analyzer to the server antenna and scan for the known frequency The fre quency used by the signal generator Mark the received power level on the spectrum analyzer 3 Subtract the power level received at the spectrum analyzer from the output power OP level of the signal generator to obtain the isolation value Isolation dB Output Power from the signal generator Received Power on the spectrum analyzer Transmit a strong Output Power from the Signal generator is recommended excess of 20dBm for easy recognition and detection by the spectrum analyzer 2 2 Precautions and Preparation 1 Ensure the power applied to the repeater is within its working range A separate circuit breaker is recommended 2 Ensure the donor antenna is installed at the location where signal from the donor BTS Node B is good enough 3 Ensure there s sufficient isolation between the donor and server antenna 4 Therepeater is designed for indoor application Ensure the location of the repeater is dry and ventilated 5 Ensure there are adequate resources to handle the weight of the repeater 6 Some electronic parts contain carcinogenic constituents please handle the repeater with care and discard the in a safe place if necessary 2 3 Donor Antenna Installation The location of the donor antenna strongly influences th
9. from leaking out from your house appartment office or if your operator is experiencing interfer ence from your repeater LED Bar BLINKING Attunation 70 64 dB 0 6 dB 4 Maintenance 4 1 Troblueshooting This table offers the fundamental guidelines for troubleshooting advice For the MP2110A series Before sending the repeater back to the factory for service please check the troubleshooting measures listed below first No LED is lit No AC power Check if the power cord is plugged into the repeater and the socket properly No amplification after repeater 1 Your phones is showing LTE or 1 If you have a LTE 4G phone it installed GSM signals would probably lock to 6 signal even if that signal is very low when you are not making phonecalls This is normal 2 Donor Signal is poor 3 Bad service antenna cables Test by locking your phone in 3G only mode or test by making a phone call and see if it switches to 3G 4 Wrong operator band 2 Ensure signal strength and signal quality at the donor antenna is good enough Check signal meter on the repeatre for input signal 3 Check cables and connector to the internal service antenna 4 Check the selected operator band by the software Coverage decreased after certain 1 Donor signal strength 1 Check the signal strength at period decreased donor antenna Re locate the Donor Antenna to solve problem 2 The quality of feeder cable system decreased due
10. matically Off The repeater is working in normal mode The repeater parameters need to be set manually by the or key Automatic Gain Control LED Green No problems Red AGC is active and working at it s limits Indicating strong signal or low isolation between antennas Isolation LED Green Isolation testing OK Red Isolation testing failed Increase distance between antennas or make other arrangement to increase isolation Signal strenght indicator Downlink input power range Solid light Bad might be problems or will not work at all gt 70 dBm gt 66 dBm Will probaly work but limited range indoor Instal lation can be sensitive to outdoor conditions like rain snow ym Ma ene 99 internal coverage Manual gain mode When not using Smart Mode you can manually lower your repeaters gain by adding attenation Every press och the or button will manually decrease or increase the total gain by 1 dB You can manually decrease gain from 70 down to 36 dB While pressing or the LED bars will be blinking to show you your settings After 1 3 seconds the LED bar will automatically stop blinking and start showing Signal strength again The new signal strenght is showing including the new gain attunation This can be very useful if you have very strong input signal or if you need to keep internal repeater signals
11. on When Repeater is close to the BTS hence there is a high input power at the donor antenna Even with the smart ability of the auto gain adjustment it is still recommended to add an RF attenuator at repeat er s BTS port to avoid interference to the BTS 3 2 2 Repeater Settings After switching on the repeater the repeater would automatically adjust both uplink and downlink gain value based on the repeater installation environment if the smart function is turned on The repeater can also be adjusted manually via the front control panel Power Smart AGC 1SO Figure 5 Front panel of the repeater Buttons Function Explanations Function Function Explanations Intelligent mode key Press this key the repeater can convert between intel ligent mode and normal mode Press up to two times to switch Make sure that the Smart LED changes Gain attenuation key Intelligent mode off Press this key the uplink and down link gain will reduce The greatest reduction is 31dB Each press of the key is 1 dB When Intelligent mode turned on this key is invalid B Gain increase key Intelligent mode off Press this key uplink and downlink gain will increase Each press of the key is 1 dB When Intelligent mode turned on this key is invalid Explanations Power LED DC ON Power LED is Green Indicates that the power Power supply is normal Smart LED Green Repeater is working in intelligent mode The repeater parameters is set auto
12. to oxidiza 2 Check the VSWR of the feeder tion especially in harsh condi cable system to find out the tions or cable damage by mice or faulty point and then replace it insects T 3 Reconsider the position of 3 Change of indoor structure or antennas and the layout of Furniture cables if such change occurs Bad Ec No Quality inside the 1 Self oscillation occurred 1 Check the isolation between coverage area severely ISOLATION LED may be donor and server antenna lighted in red l 2 Adjust the donor antenna 2 Poor Ec No Quality from donor direction or relocate the donor source antenna Call drop frequently 1 Self oscillation occurred 1 Check the isolation between donor and server antenna Turn 2 Signal handover frequently on the Intelligent Mode 3 Donor BTS problem 2 Make sure the RSCP for pri mary BCCH gt than 1st neighbor BCCH 6dB 3 Consult the operator s RF engineer
13. when the donor source signal fluctuates Also when the ALC is activated the ISOLATION LED indicator would be lighted in orange which means the Isolation may not be enough It also prevents UL interference and self oscillation from insufficient isolation between donor and server antennas Antenna isolation testing P2110Aseries product also has a repeater mounted antenna isolation detection function Equipment installation completed boot automatically after the onset detection transceiver antenna isolation if transceiver antenna isolation can not meet the installation requirements the device will automatically reduce the gain to guarantee the equipment in normal working not self excitation vibration guarantee not to interference protection of base station repeater itself At the same time alarm exhibit of lanterns bright red light alarm Device LED gain display panel will display device is reduced after the equipment current gain state which has the advantages of convenient construction but also to protect the base station equipment and does not generate interference 2 Installation 2 1 Isolation Isolation is an important concept for the repeater system and it is one of the factors that affect the loca tion of the donor antenna and the location of the server antenna In the repeater system the isolation must be enough which means the donor antenna cannot be installed too close to the repeater But what is isolation The isolation is
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