FCC ID : U88-GRS-825DM-BC ATTACHMENT E. - User Manual - HCT CO., LTD. SAN 136-1, AMI-RI, BUBAL-EUP, ICHEON-SI, KYOUNGKI-DO, 467-701, KOREA TEL:+82 31 639 8517 FAX:+82 31 639 8525 www.hct.co.kr Report No.
GRS-825DM-BC RF Repeater User Manual January, 2009 Version 1.
Bell Mobility User Manual In-building Repeater - INDEX 1. SUMMARY .................................................................................................................3 2. SYSTEM CONFIGURATION .....................................................................................5 2.1 In-buildingRepeater Service Network Configuration.......................................................... 5 2.2 System Design and Operation .........................................................................
Bell Mobility User Manual In-building Repeater 1. Summary GRS-825DM-BC is a In-building repeater, which has been designed to improve signals in blanket/shadow areas inside of buildings to transmit Bell Mobility’s signals at nd 800MHz frequencies. Characteristics 800MHz Band: 80dB Gain with 25dBm maximum composite output power. Bandwidth: - Downlink 880MHz~894MHz, Uplink 835MHz~849MHz (14MHz Band) - See page 11 for more details.
Bell Mobility User Manual In-building Repeater Characteristics GST’s In-buildingrepeater is basically a combination of 800MHz 25dBm repeaters. Functional modules are classified as below: - Cavity Filters to combine the Duplex input/output signals for: 800MHz. - LNA (Low Noise Amplifier) Gain Block to transmit output signal to PAM (Power Amplifier Module) - Cavity Filter - Converter Modules - PAM Module to amplify output power linearly in accordance with optimal repeater output power.
Bell Mobility User Manual In-building Repeater 2. System Configuration 2.1 In-building Repeater Service Network Configuration
Bell Mobility User Manual In-building Repeater 2.2 System Design and Operation 2.2.1 System Design
Bell Mobility User Manual In-building Repeater
Bell Mobility User Manual In-building Repeater 2.2.2 Downlink/ Uplink Path In-building RF Repeater simutaneously operates at 800MHz frequencies and has one Donor ANT Port for aiming at each BTS, and one Server Port for the In-building coverage. Therefore the Cavity Filters applied to the Front End of Donor ANT Port and Server ANT Port consists of DPX, has DPX which multiplexes all Tx/Rx into one path.
Bell Mobility User Manual In-building Repeater 2.2.3 800MHz Frequency Selection Lower B (5MHz) 880 Upper B (5MHz) 885 Blank 890 B’ 891.5 894 MHz 849 MHz 800MHz Downlink Frequency Table Lower B (5MHz) 835 Upper B (5MHz) 840 Blank 845 846.6 B’ 800MHz Uplink Frequency Table 800MHz Band Structure 800MHz Band Select Table Configuration B (10MHz) Lower B (5MHz) Upper B (5MHz) 1 O O 2 O 3 4 O O 5 6 B’ (2.
Bell Mobility User Manual In-building Repeater 3. SPECIFICATIONS 3.
Bell Mobility User Manual In-building Repeater 3.2 System Specifications Parameter Specification Remark Range DL: 880~894MHz UL: 835~849MHz DL: 880 ~ 890MHz UL: 835 ~ 845MHz DL: 891.5 ~ 894MHz UL: 846.5 ~ 849MHz DL: 880 ~ 885MHz UL: 835 ~ 840MHz Or DL: 885 ~ 890MHz UL: 840 ~ 845MHz 50dB ~ 80dB Adjust Step ±1.0dB Adjust Accuracy ±0.5dB 800MHz < 6.0us F0±750kHz < -45dBc ∆marker: 29dB F0±1.98MHz < -50dBc ∆marker: 39dB Out Band Spurious Emission < -13dBm RBW: 30MHz Flatness < ±1.
Bell Mobility User Manual In-building Repeater 3.3 Electrical and Environmental Specifications Item Specification Remark RF Connector N-Type Female Donor & Server ANT Port Power AC MS3102A-10SL (3Pin) MIL-C-5015 Type Connector DC SCK-16-2P (2Pin) Circular Type AC Supply AC 120V 60Hz 3.0A Out Dimension 450(L)*410(W)*199(H) cm Net Weight 17.
Bell Mobility User Manual In-building Repeater 3.4 Functions Parameter Gain Control Specification • Adjustable DL and UL Gain range 50~80dB (800MHz) • Display default Gain and current Gain function • AGS (Auto Gain Setting) Use for convenient Set-up AGS Auto Gain Setting AGC Auto Gain Control • It always operates in Downlink AGC ON status • To maintain same Downlink output power despite flexible input signal strength. • To add or subtract Attenuation level referring to AGC Power Limit level.
Bell Mobility User Manual In-building Repeater Power Monitoring • Monitoring repeater’s output level Function • Isolation Check in initial set up or Reset • Monitoring Oscillation comparing to minimum/maximum Noise Floor level Oscillation Check • When Oscillation occurred, repeater attempts to stabilize Isolation through Gain control function.
Bell Mobility User Manual In-building Repeater 4. SETUP 4.1. Equipment Needed for In-buildingRepeater Setup Parameter Item Quantity Remark Major Component Repeater GRS-DUO24M-BC 1 EA Provided by GST Mounting Bracket 1 EA CD which contains User Manual 1 EA V.1.0 and Installation Guide V.1.0 Additional Components Ethernet Cable 6.6ft (2m) 1 EA Ground Cable 6.6ft (2m) 1 EA Ground Sems Screw M4 x 8mm 4 EA Bracket Sems Screw M6 x 16mm 4 EA Lag Screw 12.7mm x 50.
Bell Mobility User Manual In-building Repeater 4.1.3 System Setup 1) This equipment is basically wall mountable. 2) Installer will have to connect the power supply (after verifying the input power) and RF cable to the Repeater and then it will be ready to use. 3) For grounding, there is a grounding terminal in main power supply which will be plugged into power outlet.
Bell Mobility User Manual In-building Repeater 4.1.4 Open for Service 1) Check points before open: a. Verification of system installation status: - Electricity, In/Out antennas, cable connection, and equipment mount status. b. Verification of system accessories: - User should check all necessary accessories. c. Check receipt signal level - Installer should check whether environmental conditions are in accordance with system specification to ensure that system operation will be optimized.
Bell Mobility User Manual In-building Repeater GRS-825DM-BC In-Building Repeater Front LED b. Verification of operation status User should verify following status with Output monitoring terminal, which is provided by Spectrum Analyzer: - Output power generation status, system spurious emission characteristics. c. Verification of signal quality and strength in service area User should verify signal strength and quality of in-service coverage area by using cell phone or other measuring device. d.
Bell Mobility User Manual In-building Repeater a. RF Power Meter: 10Watt Max, 50ohm b. Signal Generator: 3GHz c. Spectrum Analyzer: 3GHz d. Multi-Meter 4.2.2 Notice a. Troubleshooting should be performed by a trained technician. b. Parts that seem to be not used should not be disassembled. c. While troubleshooting, technician should use attenuator to check RF Signal output. 4.2.3 Simple Troubleshooting Method a.
Bell Mobility User Manual In-building Repeater 4.2.
Bell Mobility User Manual In-building Repeater 4.2.5 Troubleshooting Guide Related to RF Symptom When repeater does not work properly When repeater does not work properly Check Point * Check Electricity Cord connection status * Checking electricity input to AC power outlet.
Bell Mobility User Manual In-building Repeater When in alarming * DL, UL PAM alarm When in alarming * Reset AC power upon completing Alarm troubleshooting * Verify DC power by using DVM (Digital Voltage Meter) * DC matter/Current alarm * Reset AC power upon completing Alarm troubleshooting. When in alarming * Check Isolation between Donor and Server. * UL Oscillation * Reset AC power upon completing Alarm troubleshooting When in alarming * Check connection status of LNA.
Bell Mobility User Manual In-building Repeater * Technician should connect When output antenna with output port of * Reconnect the connector. power is no repeater. * Change it if the connector is defective. longer problem * Please make sure all connectors are fastened When output power is no * Check the input level * Increase output power or check input change of BTS side.
Bell Mobility User Manual In-building Repeater In case Output * Check connection fastened Signal between antenna and cable wavelength is (Signal wavelength should be * If connection is not proper, reconnect cable and connector not shown flat flat and stable if technicians and then check the output power again. or looks like shake CABLE. If not, it is oscillation connection problem.) Same as above Same as above * Input level change or module overheating.
Bell Mobility User Manual In-building Repeater 5. IC Information General Information Transmitter Antenna This device has been designed to operate with the antennas listed below, and having a maximum gain of 80 dB. Antennas not included in this list or having a gain greater that cable loss of Antenna to Repeater t han 12 dB are strictly prohibited for use with this device. The required antenna impedance is 50 ohms.