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Signalwing Corporation J4I-CP Series User Manual

Industrial signal booster
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Summary of Contents for Signalwing Corporation J4I-CP Series

  • Page 1 ’ ’...

  • Page 2: Table Of Contents

    Content 1. General ...................... 3 1.1 Warranty .................... 3 1.2 Safety Information ................3 1.3 Other Precautions ................4 2. Introduction to Boosters ................5 2.1 System Introduction ................5 2.2 General Installation Layout..............5 2.3 Basic Booster System Components ..........6 2.4 Advantages of Booster ..............

  • Page 3: General

    General This user’s manual provides information that includes installation, configuration, operation and maintenance of the booster. Specifications are also provided in details in order to help users better understand the booster. Please read this user’s manual carefully and follow the instructions outlined to ensure long life span and trouble free operation of the unit.

  • Page 4: Other Precautions

     Electrostatic Sensitivity ESD: Electrostatic Sensitive Devices Semiconductor used in this product may be damaged by electrostatic discharge. When unpacking or handling the booster, follow precautionary procedures including use of grounded wrist straps, grounded workbench surfaces, and grounded floor mats. ...

  • Page 5: Introduction To Boosters

    Introduction to Boosters 2.1 System Introduction A booster is a device that receives the RF signal, amplifies and then retransmits it to the weak or blind area. Boosters overcome the attenuation caused by propagation loss and obstacles. Booster solutions are used in many different applications, such as basements, apartments, parking lots and highway, mountain areas etc, where mobile phone signals cannot penetrate.

  • Page 6: Basic Booster System Components

    Figure 2: Indoor Application Above is the example of booster’s indoor application. The Yagi antenna is used as donor antenna, which is placed outside of the building where it has easy access to the donor BTS. Signals from the donor BTS are then introduced into the booster. After amplifying by the booster, signals are divided into several parts by splitters and sent to the service antennas.

  • Page 7: Advantages Of Booster

    Service Antenna For outdoor coverage, the service antenna must be directional antenna whose half-power beam width is depending on coverage requirements. For indoor coverage, the omni-directional antenna can also be used in some condition.  Coaxial Cables 1/2” and 7/8” coaxial cables (50Ω impedance) are recommended to use with the booster.

  • Page 8: Block Diagram

     Fast & easy Installation Compared to the Base Station, wireless boosters is space saving and does not need additional wiring. Its installation simplicity and operational user friendliness appeal greatly to many operators for the purpose of rural coverage or use of temporary coverage during network optimization.

  • Page 9: Outline Of Available Functions

    2.6 Outline of Available Functions  Local Control This function is used when commissioning or checking booster status on site. Booster is connected to a Laptop using the RS-232 cable. Operators can configure, check parameters such as gain, alarm parameters etc. Refer to OMT User’s Manual for more details about connection and OMT operation procedures.

  • Page 10: Installation

    Installation 3.1 Preparation Ensure the power to be accessed is within the booster’s working range: AC 90V~300V. A separate circuit breaker is recommended. Ensure there’s sufficient isolation between the donor and service antennas. Ensure there are adequate resources to handle the weight of the booster.

  • Page 11: Donor Antenna

    The antennas are usually selected and purchased by the customer. Manufacturer will provide recommendations for the most suitable types of antennas based on our experience for a successful and trouble free installation of the booster if required. 3.2.1 Donor Antenna 3.2.1.1 Donor Antenna Selection There are many types of antennas on the market, but the following general characteristics should be met during selecting the donor antenna, we will also...

  • Page 12: Service Antenna

    When installing the donor antenna in a relatively high location, lightning arrestor is necessary. Grounding of the arrestor and the antenna are essential. Waterproof of donor antenna’s connector with sealant is highly recommended. For outdoor project, the antenna needs to be positioned in an area between the donor BTS and the coverage area, pointing to the donor BTS to get an excellent donor signal.
  • Page 13 from Commscope (www.commscope.com): (7dBi gain) or CJLPA401U-W1 (3 dBi gain); Kenbotong band (www.kenbotong.com): CLNA001U-CN2 (7dBi) or (3dBi). TDJ-0825BKM-L TQJ-0825XTS1 3.2.2.2 Service Antenna Installation It is necessary to find a good location for the service antenna in order to achieve best coverage. For indoor coverage, the following conditions need to be considered: 1.

  • Page 14: Isolation

    3. When installing the service antenna in a relatively high location, lightning arrestors are necessary. Grounding of arrestor and antenna is essential. 4. Waterproofing of service antenna’s connector with sealant is highly recommended. 3.2.3 Isolation Isolation is an important concept when it comes to the implementation of a booster system, especially for the outdoor project.
  • Page 15 above the booster gain. Isolation ≥ Gain of Booster + 15dB When self-oscillation occurs, the alarm LED, “AGC Alarm” will be flashing. Booster may be damaged if it operates under self-oscillation condition. 3.2.3.2 Obtaining the Isolation Value  Theoretical calculation (for reference only) The physical isolation between the donor and the service antennas can be theoretically estimated using the following formulas.

  • Page 16: Booster

     Make a record of the power level from the spectrum analyzer.  Subtract the power level received at the spectrum analyzer from the power level of the signal generator to obtain the isolation value.. Isolation (dB) = Output Power from Signal Generator – Received Power at the Spectrum Analyzer Figure 7 A relatively strong transmitting power from the signal generator is...
  • Page 17 Figure 8 Drill 4 holes in the wall for hanging the bracket that hold the booster: Figure 9...

  • Page 18: Commissioning

    After that you will see the final pictures after installation. Figure 10 Commissioning The following chapter outlines the process to optimize the performance of the booster. The gain setting, isolation, downlink output power, and booster uplink noise contribution will be considered 4.1 Commissioning Principle 4.1.1 Downlink Output Power The total downlink output power of the booster is depending on the input power...
  • Page 19 The maximum output power of the booster is determined by the linearity of the amplifier block of the booster. For any given input signal power, its corresponding output is increased by the gain of the booster, the output power will increase along a linear curve based on the fixed gain value. If the input signal amplified by the gain set exceeds the rated maximum output, the AGC (automatic gain control) function will be triggered.

  • Page 20: Isolation

    Figure 12 4.1.2 Isolation Isolation is an important condition that MUST be met for trouble free operation of the booster. To ensure the booster’s working properly, the following equation MUST be met. Refer to Section 3.2.3 Isolation for further details about isolation and how to measure the value.
  • Page 21 Alarm Cause Solution Add the RF attenuator in BTS port to 1. High input level at the BTS port of decrease the input power. And the booster, AGC is active and decrease downlink gain more than 20dB attenuation has DL AGC Alarm adjusting the downlink attenuation.

  • Page 22: Troubleshooting

    environment. 1. Check whether the input AC power is stable, it should within 110/ 220V ± 1. Input AC power is not stable. 20%. If the AC is not stable, an UPS 2. Booster’s power supply module with square wave is recommended. Power Module Alarm has been damaged 2.
  • Page 23 Status Possible Reason Solution 1. Power cable doesn’t connect 1.Check the power cable and outlet to Power doesn’t properly. make sure there glow after power discontinuities. 2. Input AC is out of the rated voltage switched on. range. 2. The AC voltage range must be between AC100/220±20%V.

  • Page 24: Booster Replacement

    AGC alarm displays in This condition occurred when LCD panel. Inside the self-oscillation occurs on the site. Increase the separate distance coverage, received between donor and service antenna to When isolation of the site cannot meet signal power is increase the isolation. And then adjust the formula: Isolation >...

  • Page 25: Fcc Statement And Warning

    6. FCC Statement and Warning 1. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference. (2) This device must accept any interference received, including interference that may cause undesired operation.

  • Page 26: Appendix

    7. Appendix 7.1 Abbreviations Automatic Gain Control Base Transceiver Station RXLEV Signal Strength Decrease Downlink Ec/No Signal energy per chip to noise ratio Frequency Converter Intermediate Frequency Increase Light Emitting Diode Low noise Amplifier Mobile Station Minimum Operation & Maintenance Terminal Power Amplifier Phase Locked Loop Radio Frequency...

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