GST GRS-825DM-BC User Manual
FCC ID : U88-GRS-825DM-BC
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. : HCT-RF09-0416 1/1
ATTACHMENT E.
- User Manual -
GRS-825DM-BC
RF Repeater
User Manual
January, 2009
Version 1.0
Bell Mobility User Manual
In-building Repeater
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- INDEX -
1. SUMMARY .................................................................................................................3
2. SYSTEM CONFIGURATION.....................................................................................5
2.1 In-buildingRepeater Service Network Configuration..........................................................5
2.2 System Design and Operation.............................................................................................6
2.2.1 System Design ..............................................................................................................................................6
2.2.2 Downlink/ Uplink Path .................................................................................................................................8
2.2.3 Frequency Selection..................................................................................................................................... 9
3. SPECIFICATIONS...................................................................................................10
3.1 System Capacity ................................................................................................................10
3.2 System Specifications........................................................................................................11
3.3 Electrical and Environmental Specifications .....................................................................12
3.4 Functions...........................................................................................................................13
4. SETUP ......................................................................................................................15
5. IC INFORMATION..................................................................................................25
Bell Mobility User Manual
In-building Repeater
3
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
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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.
- Power Supply Unit
- Controller to monitor each module in repeater.
Abbreviation
PAM: POWER AMPLIFIER MODULE
LNA: LOW NOISE AMPLIFIER
AGC: AUTO GAIN CONTROL
ALC: AUTO LIMIT CONTROL
Caution: Risk of explosion if battery on the controller board is replaced by an
incorrect type.
- Statement indicating that the socket-outlet shall be installed near the equipment
and shall be easily accessible.
- This equipment is indoor use and all thecommunication wirings are limited to
inside of the building.
Bell Mobility User Manual
In-building Repeater
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2. System Configuration
2.1 In-building Repeater Service Network Configuration
<Pic.1> In-building Repeater Service Organization
Bell Mobility User Manual
In-building Repeater
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2.2 System Design and Operation
2.2.1 System Design
<Pic.2> In-building Repeater Internal Design
Bell Mobility User Manual
In-building Repeater
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<Pic.3>> In-building Repeater Port Design
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