Inkel JF43E1900CFN03 CDMA Fiber-Fed Repeater System User Manual

INKEL Corporation CDMA Fiber-Fed Repeater System

Contents

User Manual

1. Overview Figure 1. System Configuration Optic repeater is a type of BTS sub-systems. It is designed to cover the radio-shadowed areas that could be occurred by obstructions among base stations. The system provides high quality communication at reasonable cost by adopting high technologies. For example, the system adopted WDM that multiplexes UL and DL signals onto a single fiber cable, so that the system can be installed at low cost and maintained with ease. 2. Major Advantages A. REMOTE 1) It is easy to install and maintain the system, because it is designed as small size, light weight, and low power consumption. 2) It is reliable by adopting water and moisture resistant structure. 3) Remote control Operation, maintenance, and repair is easy by using the system that provides alarm and information on the Gain Control of Remote Cell, output level control, power on/off, internal temperature monitoring, and problems concerning optic module. Remote control can be performed by RF modem so that operation and maintenance personal can use it easily. And it was designed to operate with comprehensive network management system. 4) Transmission and Receiving with 1 Core Optic Fiber It use WDM which enables 2 wave-length (Forward: 1550nm, Reverse: 1510nm) to Base StationBTSDonorRemote
simultaneously be transmitted and received through 1 Core Optic Fiber 5) Optic AGC (Automatic Gain Control): It is regularly keeping the loss between optic sections. 6) ALC (Automatic Limit Control): It makes to limit the level of output power less than the regular level. B. DONOR 1) It is easy to install and maintain the system, because it is designed as small size, light weight, and low power consumption. 2) Donor shelf is designed to mount into 19” shelf and also, can be mounted into the enclosure that is following the IP65 standard. 3) Control Operation, maintenance, and repair is easy by using the system that provides alarm and information on the Gain Control of Donor Unit, output level control and problems concerning optic module. Remote control can be performed by RF modem so that operation and maintenance personal can use it easily. And it was designed to operate with comprehensive network management system. 4) Transmission and Receiving with 1 Core Optic Fiber It use WDM which enables 2 wave-length(Forward:1550nm, Reverse:1510nm) to simultaneously be transmitted and received through 1 Core Optic Fiber 5) Optic AGC(Automatic Gain Control) : It is regularly keeping the loss between optic sections.
3. The name and function of each module A. REMOTE BATTERYOPTIC UL_1 DL/UL_0 AC_OUTAC_INBATTERYOPTICUL_1 DL/UL_0 AC_IN Figure 2. A plan of Remote 3.1 Interior Module ① Optic It changes the optic signal (from Donor) into RF signal and RF signal (from Remote) into optic signal. ② DL_UL Drive The module changes the level of a signal on DL path into the desired level. It has a variable attenuator. The antenna output level on DL path is adjustable by the attenuator. It amplifies the level of a signal on UL0 path. It amplifies the level of a signal on UL1 path after down-conversion. ③ UL_SAW Drive It contains saw filters for band selection. ④ Local & Modem Drive
It generates local signals for band selection on UL paths. It performs FSK modulation and demodulation for communication between Donor and Remote. ⑤ LPA (30Watts) It is amplified into high output power for transmitting the Down Link signal to antenna. ⑥ LNA It amplifies signals from antenna for achieving good characteristics of noise figure. ⑦ Cavity filter It deletes useless signals except band that is used for service. DL/UL signals are already distinguished at part of Antenna. Regarding Up Link Path, It deletes signals except band that is used for service. ⑧ PSU It changes the input power (50~88VAC) into DC+27V, DC+15V and DC+7V for operating each module. ⑨ RSM (Remote Status Monitoring) It manages the communication of Donor and controls alarm signal and all sorts of control. 3.2 Other parts ① RF Connector : 7/16 DIN Female ② Power Cable : Power Feeder 625 JCAT 3R Coaxial Cable ③ Optic Adapter : Sam-Hwa KFBG #16 (Waterproof, UL certified, the quality of the material SUS)-using SUNFLEX pipe ④ Bracket : The bracket is used for mounting the repeater on the wall.
B. DONOR - Donor Shelf - - Donor Enclosure – 3.3 Interior Module ① optic It changes the optic signal (from Remote) into RF signal and RF signal (from Donor) into optic signal. ② DL Drive This module changes the forward signal into optimum level and has attenuation for setting the input level of optic module. It contains saw filters for band selection. It contains FSK modem for communication with remote. ③ UL Drive It amplifies the output signal of optic module for getting optimum level. There is a function of attenuator for module gain control and setting the gain between optic sections regularly. ④ Local Drive This module makes local signal for Reverse diversity path. It up-converts of UL1 path. It generates local signals for band selection on DL paths.
⑤ Wireless Modem & control board They make the signal for communicating the upper systems. The communication is for receiving and sending the alarm and control signals. Also, the data including the information of product is communicating with MCU. ⑥ PSU It changes the input power (110~230VAC) into DC+27V, DC+15, and DC+7V for operating each module. ⑦ MCU It has a computer interface. The operator can monitor several kinds of alarms and control the system by using the connected computer. 3.4 Other parts ① RF connector: N female (Donor enclosure), SMA female (Donor shelf) ② Optic adapter: FC/ APC type ③ Bracket (Enclosure): The bracket is used for mounting the repeater on the wall.
4. How to install the system Typical Installation Instructions A. Checking the contents B. Put the repeater at the place where to install it C. Install Repeater inside at convenient location on a wall D. Installation exterior antenna & Laying Feeding cables E. Measurement of receiving level from base station i. Connect feeding cable, which has been connected with directional antenna for base station, with input of spectrum analyzer. ii. Set measurement environment of Frequency, Span, BW and Amplitude, etc of the spectrum analyzer. Install Repeater inside at convenient location on a wall Fix repeater body on a wall Installation exterior antenna & Laying Feeding CompletionTesting for calling quality Inspection Checking the contentsMeasurement of Receiving Level from Base Station Connect power supply adapter
iii. Verify Channel Power value of input signal. F. Connect to RF Cable G. Connect power supply adapter Caution: Should check the input power whether 50~88VAC.(For Remote) Caution: Should check the input power whether 110~230VAC.(For Donor) H. Testing for calling qualities 5. User Attention 1) Do not open the case of repeater 2) Do not excessive pressure to Repeater. 3) Please use a rated voltage. 4) The repeater must have been installed considering environmental factor. 6. Troubleshooting 1) The PSU LED Causes Action Power cable of the power supply unit has not been connected. Check connection of power system Failure of the LED Checking the items of alarm LED 2) The repeater transmits no signal Causes Action Coaxial cable connecting the repeater and measuring system is defective Replace coaxial cable or power detector module Power system of interior of the repeater has not been connected. Check power connection of module of interior of the repeater
7. Specifications 7.1 General System Electrical Specifications Characteristic Specification Frequency DL: 1930.625 ~ 1989.375MHz UL: 1850.625 ~ 1909.375MHz Frequency bandwidth 58.75 MHz (DL/UL) Channel bandwidth and spacing Applying to CDMA Frequency Assignment System time delay 5 ㎲_max Characteristic impedance 50 ohm 7.2 DL Path specifications(Remote) Remote Donor Input power range -34 ~ -24dBm/total -3 ~ +7dBm/Total Gain 61~77dB -2dB Gain control step 0.5dB 0.5dB Maximum output power 43dBm/total +5dBm/Total Output VSWR 1.5:1 1.5:1 Ripple 3dB max 2dB max 7.3 UL Path specifications Remote Donor Input Power -55 dBm max 0dBm max Gain +55dB -25 ~ 0dB Input VSWR 1.5:1 0.5dB OIP3 25dBm max 1.5:1 Ripple 3dB max 25dBm max 7.4 Mechanical Specifications Remote Donor Output/Input connector 7/16 DIN Female N Female Input AC power 50~88VAC 110~230VAC Dimensions (W*H*D) 13.8*31.5*10.6(inch) 482.6*266*400(mm) Weight 79lbs Max 36lbs max WARNING Any changes or modifications not expressly approved by the manufacturer could void the user’s authority to operate the equipment.

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