SpotCell2331Xf SpotCell3331Xf Digital Repeater User’s Manual
Digital Repeater User Manual 1 Safety Warnings _____________________________________________________________________ 3 2 Why repeater ________________________________________________________________________ 4 2.1 Reason 1 ________________________________________________________________ 4 2.
Digital Repeater User Manual Preface This user’s manual describes the installation, commissioning and maintenance of digital repeaters. Please do read the user manual carefully before installing and maintaining digital repeaters. The information in this manual is subject to change without prior notice. Opinions are welcomed about the manual improvement.
Digital Repeater User Manual WARNING. This is NOT a CONSUMER device. It is designed for installation by FCC LICENSEES and QUALIFIED INSTALLERS. You MUST have an FCC LICENSE or express consent of an FCC licensee to operate this device. Unauthorized use may result in significant forfeiture penalties, including penalties in excess of ＄100,100 for each continuing violation. WARNING.
Digital Repeater User Manual How to solve the problems? Best Solution: Plug & play: Purchase a set of booster solution and install it, and plug on the power and immediately you would be able to enjoy the full bar and high quality signals! Question: Will booster increase the RF radiation? A: No, it will decrease instead.
Digital Repeater User Manual It is designed to improve the call quality of an area by receiving, amplifying and re-transmitting signals of the base station into a specified area via the server antenna of the repeater.
Digital Repeater User Manual High-integration (One board to contain low-noise amplifier, frequency selection module, power amplifier module) Manual gain control provides a variety of applications Support multi-system, multi-band, band selectable and adjustable 4.2 Appearance of digital repeaters Figure 1 the front view (colors may differ from real products).
Digital Repeater User Manual Modules in the system diagram: Combiner：The main purpose of combiner is to combine two system to share the same antennas. Duplexer: The main purpose of duplexer is to combine downlink and uplink to share the same antennas, the duplexer is composted of one pair of band pass filter that can not only reject the spurious interference, but also increase the isolation of Uplink and Downlink.
Digital Repeater User Manual 6 The repeater system Donor Antenna： 5~7dbi outdoor panel or 7~9dBi wide band Yagi are recommended as donor antenna. Function: Pick up donor signals from the BTS and send to the repeater by cable; the received signals’ power level and quality influence a lot on the coverage effect. Donor antenna also transmits the uplink signals from the repeater to BTS. Server Antenna: 2~3dBi indoor omni ceiling or 5~7dBi indoor panel are recommended.
Digital Repeater User Manual 7.1 Installation Location Requirement 1) It is appreciated that the repeater is installed in a cool, dry and ventilated room without erosive gas and smoke and without leakage on its proof. 2) Besides above, a cool and ventilated wall of which sun-proof and waterproof is expected. 3) Besides above, common wall, tower or high pole is ok. 4) Installation height should be easy for RF cable wiring, heat dissipation, security and maintenance.
Digital Repeater User Manual recommended the donor antenna to be installed in an attic. Testing the signal strength received from donor antenna mounted in site by mobile phone: Please select the top of the building to install the donor antenna if the total floors are less than 7, and must select a place like balcony or platform lower than 7th floor for the donor antenna if the buildings are over 7 floors.
Digital Repeater User Manual In order to avoid interference, please note that the donor antenna should be far away from the following objects. Metal High-voltage line RF antenna High-voltage transformer Repeater is a two-way signal amplifier. So proper isolation between donor antenna and server antenna is necessary in order to avoid self-oscillation. About the definition for self-oscillation, take MIC and loudspeaker for example; if it is too close for each other, it could make big noise.
Digital Repeater User Manual If isolation can’t be achieved by the limited distance, the roof of the building or other barriers can be used to increase isolation.
Digital Repeater User Manual Test the call quality of donor antenna Lightening Test Engineer Phone Fix the donor antenna after selecting the best position, and adjust slightly its height or angles in order to get the signals with suitable input power level and calling Quality. Cable layout and connector assembly: 1) Keep the type, specifications, routing direction, location, and curvature radius of cables in compliance with the design requirement.
Digital Repeater User Manual requirement. Avoid deforming the antenna feeder where grounding clips are placed, and give waterproof treatment to the feeder. 8) Keep exposed indoor cables in good order. Install PVC troughs or tubes if the exposed cables are more than 1 meter long. Place small passive RF parts such as power splitter in cable troughs.
Digital Repeater User Manual 2) It is better to use a directional panel antenna or Yagi when the coverage shape is long and narrow (corridors, long row of houses in two sides, tunnels or elevators or rural open space). Recommend Sever antenna: Frequency(MHz) Indoor Antenna Gain for Each Frequency 824-869 1710-1990 2110-2170 Whip 5dbi - Gain (dBi) 5 5 5 Panel 10dbi - Gain (dBi) 8 9.4 9.
Digital Repeater User Manual 7.6 Repeater Installation Installation Steps Installation block diagram Installation procedure: 1) According to dimension of bracket, drill 4 *M10 holes on the wall, assembly 4 pieces expansion screws. 2) Put the rack onto the 4 expansion screws, to fix it on the wall with nuts.
Digital Repeater User Manual 8) Antenna: transfer wireless signal of monitoring information 9) Base port: connected with the donor antenna by cable. 10) Mobile port: connected with server antenna directly or by cable.
Digital Repeater User Manual Connect the Donor Antenna Connect the Server Antenna 7.6.3 Accessories selection Please pay attention to the two points of “frequency” and “impedance” during the selection of the accessories. All accessories shall support the repeater’s frequencies from feeder line, antenna and splitter to combiners etc. For example, the repeater’s frequency is CDMA850, so all the accessories must support the CDMA850 frequency.
Digital Repeater User Manual Status Definition Green Normal Blinking Running state Off RF shutdown automatically Status and Definition of ALM indicators, Status Definition Off It is working in linearity Red Repeater has alarm Blinking slowly Repeater’s gain is reduced by AGC Blinking rapidly RF shutdown by oscillation Status and Definition of Modem indicators, Status Off Blinking Definition Repeater doesn’t have modem or modem doesn’t run Register online successfully 7.7.
Digital Repeater User Manual 7.7.3 Frequency Setting The user can modify the frequency and bandwidth setting of the sub bands. To change the frequency setting, Login the OMT and go to “System: Query and Set” page, input the uplink start frequency in “Band 1 UL sub-band start frequency” cell and the uplink stop frequency in “Band 1 UL sub-band stop frequency” cell and click “ to set the new frequency, the frequency of the sub band will be changed according to the new value.
Digital Repeater User Manual POutput Power: Output Power Pinput Power: Input Power VATT: Attenuation value of attenuator Pinput Power -VATT: Input Power－Attenuation value of attenuator Pmax: Rate output power Downlink gain setting There are three factors to be followed to set DL gain of indoor repeater: Meet with isolation requirement of G1= LISO-10dB。 The repeater’s gain shall be less than “Isolation I -10dB”, and if it allows, the gain shall be less than “Isolation I -15dB” Meet with UL noise Gnoise
Digital Repeater User Manual Uplink with that of Downlink. 7.8 System Test 7.8.1 Check whether the coverage is good 1) Have a test with mobile phone or data card (engineering mobile phone is preferred). If the signals in most areas have not been improved, please check below again: The weak input signal leads to the low output power. Change the direction of donor antenna or Its installation position or replace donor antenna with higher gain to increase input signal power level.
Digital Repeater User Manual Test coverage Check the signal strength is fit No 1) Mobility Service antenna 2) increase the number of service antenna 3) reduce the attenuation values 4) increase the Connect the Server Antenna Yes Check call quality No 1) Mobility Service antenna 2) increase the number of service antenna 3) reduce the attenuation values 4) increase the output power Yes Completion Remark: Reduce the attenuation values---at the same time must ensure the isolation.
Digital Repeater User Manual Secondly adjust the antenna directions or locations or enlarge the distance between them. Thirdly reduce the repeater’s gain by ATT DIP if the above methods don’t work. The best minimum distance between donor antenna and serve antenna should be more than 10 meters. The following measures can also be tried: Use the roof of the building to enlarge the isolation (Please try to place the donor antenna and server antenna in different floors). Use some obstacles.
Digital Repeater User Manual 1) Check the input power of the repeater No 2) 3) Yes Check the gain setting is appropriate No Yes Check the direction of antenna, RF cables and connectors No Yes Use power meter to measure the voltage of power socket, if abnormal, change a socket. Measure the voltage of the adaptor, change the adaptor if abnormal. Replace the repeater If the LED alarm is OFF, use OMT to adjust attenuation until LED alarm get normal.
Digital Repeater User Manual Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. The Manufacturer's rated output power of this equipment is for single carrier operation.
Digital Repeater User Manual SpotCell3331Xf : Uplink & downlink≥80dB (b) The nominal bandwidth: SpotCell2331Xf & SpotCell3331Xf : CELL 25MHz, PCS 60MHz, AWS 45MHz, CELL support 2 sub-bands, 0-15MHz adjustable. Band width (-3dB) PCS support 3 sub-bands, 0-25MHz adjustable. AWS support 3 sub-bands, two 0-25MHz adjustable, one 0-15MHz adjustable . . (b)La largeur de bande nominale: SpotCell2331Xf & SpotCell3331Xf : . CELL 25MHz, PCS 60MHz, AWS 45MHz, CELLsupport deux sous-bandes, 0-15MHz réglable.
Digital Repeater User Manual gain reduction and not by an attenuator at the output of the device." (e) L'avis suivant: «nominale la puissance de sortie du fabricant de cet équipement est unique pour le fonctionnement de la porteuse. Pour des situations où les signaux porteurs multiples sont présents, la note aurait être réduit de 3,5 dB, en particulier lorsque le signal de sortie est ré-émise et peut causer interférence aux utilisateurs de bande adjacente.
