GST GRS-1915D-SPR Manuale utente
3G Indoor Repeater
GRS-1915D-SPR
User Manual
January, 2009
Version 0.1
Sprint User Manual
3G Indoor Repeater
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- INDEX -
1. SUMMARY................................................................................... 3
2. SYSTEM CONFIGURATION ......................................................... 5
2.1 3G Indoor Repeater Service Network Configuration............... 5
2.2 System Design and Operation.................................................. 6
2.2.1 System Design........................................................................... 6
2.2.2 Downlink/Uplink Path ................................................................. 9
2.2.3 Frequency Selection................................................................. 10
3. SPECIFICATIONS ..................................................................... 11
3.1 System Capacity..................................................................... 11
3.2 System Specifications ............................................................ 12
3.3 Electrical and Environmental Specifications.......................... 12
3.4 Functions................................................................................ 13
4. SETUP....................................................................................... 15
4.1. Equipment Needed for 3G Indoor Repeater Setup ............... 15
4.1.1 Checkpoints before turning on the Repeater .............................. 15
4.1.2 System Setup .......................................................................... 16
4.1.3 Open for Service...................................................................... 17
4.2.1 Necessary Testing and Measuring Equipment ............................. 19
4.2.2 Notice..................................................................................... 19
4.2.3 Simple Troubleshooting Method ................................................ 19
4.2.4 Troubleshooting Guide ............................................................. 20
4.2.5 Troubleshooting Guide Related to RF ......................................... 21
4.2.6 Troubleshooting Guide Related to NMS ...................................... 23
Sprint User Manual
3G Indoor Repeater
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1. Summary
GRS-1915D-SPR is a 3G Indoor repeater, which has been designed to improve signals in
blanket/shadow areas inside of buildings to transmit Sprint signals at PCS 1900MHz band.
Characteristics
PCS Band: 72dB Gain with 15dBm maximum composite output power.
Bandwidth: Entire PCS 1900 frequency A Block to F Block (45MHz). Bandwidth selection
adjustable per user’s situation.
-5MHz, 10MHz, 15MHz Blocks
-Three continuous 5MHz, 10MHz, 15MHz block combinations ( only continuous )
-See page 10 for more details.
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Characteristics
GRS-1915D-SPR repeater is an indoor repeater with output power of 15dBm. Functional
modules are classified as below:
-DPX Filters to combine the input/output signals for: CDMA
-Body (the whole module)
-AC/DC Adapter
-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.
-.Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void
your authority to operate this
equipment.
-.Warning: Exposure to Radio Frequency Radiation The radiated output power of this device is far below
the FCC radio frequency exposure limits. Nevertheless, the device should be used in such a manner that
the potential for human contact during normal operation is minimized.
In order to avoid the possibility of exceeding the FCC radio frequency exposure limits, human proximity
to the antenna should not be less than 20cm during normal operation. The gain of the
antenna for pcs Band must not exceed 12 dBi.
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2. System Configuration
2.1 3G Indoor Repeater Service Network Configuration
<Pic.1> 3G Indoor In-building Repeater Service Organization
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2.2 System Design and Operation
2.2.1 System Design
<Pic.2> GRS-1915D-SPR repeater
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<Pic.3> Internal Design
No Part
1 Module
2 Control Board
3 Ethernet Board
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<Pic.4> Outside Port Design
NO. PORT
1 Server Antenna Port
2 Donor Antenna Port
3 DC Power Port
4 CLI Monitor Port
5 Ethernet Port
6 Grounding port
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2.2.2 Downlink/ Uplink Path
GRS-1915D-SPR improves and strengthens signals in PCS 1900MHz band.
In downlink path, received from Donor Antenna signal is transferred through Duplexer (DPX)
and Down Conversion (DNC) module, and after choosing one of 5MHz, 10MHz or 15MHz in IF
path the signal is forwarded to Up Conversion (UPC) module. Then, improved signal is sent to
Service Antenna through Diplexer (DPX).
Uplink path is vice versa to Downlink path.
<Pic.5> Block Diagram
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3G Indoor Repeater
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A1 A2 A3 DB1 B2 B3 E F
1930 1935 1940 1945 1950 1955 1960 1965 1970 1975
MHz
A1 A2 A3 DB1 B2 B3 E F
1850 1855 1860 1865 1870 1875 1880 1885 1890 1895
MHz
2.2.3 Frequency Selection
Downlink Frequency Table
Uplink Frequency Table
<Pic.6 > 1900MHz Band Structure
PCS 1900 repeater has 5MHz, 10MHz, 15MHz Paths in IF division, so any of these bandwidths
can be selected for providing service. 5MHz, 10MHz, 15MHz are only continious bands.
But there are some cases when this choice is not applicable:
-Not continuous 3 Paths [5 MHz each], so total band is 15MHz
Ex) A1, D, E
-Not continuous 3 Paths [5 MHz each], so total band is 10MHz
Ex) A1, D
-Not continuous 3 Paths [5 MHz and 10M ], so total band is 15MHz
Ex) A1,A2,E
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