Ver 0.5 2008. 04. 21 ▶ Changed Installation Bracket
▶ Updated System Block
▶ Changed DIP S/W control method
▶ Appendix C. System Block
▶ Appendix D. Troubleshooting for the MPE25K
Modified Image
▶ Bias-T CU Port DC Block+50Ω Term
▶ Added material name of each image
2
▶Safety Precautions:
Î Use the power plug at the adaptor to turn the power on and off.
Î Please make sure that a ground wire is installed to connect the Antenna Unit to an appropriate
earth ground.
Î Refer servicing to a qualified technician who is familiar with NEC (National Electrical Code) and
a related regulation for installation to reduce the risk of electrical damage when the unit does not
appear to operate normally or exhibits a marked change in performance.
Radio Regulation Conformance
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with instructions, may
cause harmful and, if not installed and used in accordance with instructions, may cause harmful
interference to radio communications. However, there is no guarantee that the interference will not
occur in a particular installation.
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. And (2) this device must accept any
interference received, including interference that may cause understand operation.
FCC RF Radiation Exposure Statement
The antenna(s) used for this transmitter must be installed to provide a
separation distance of at least 20 cm from all persons and must not be co-located or
operating in conjunction with any other antenna or transmitter.
WARNING
Any changes or modifications not expressly approved by the manufacturer could void
the user’s authority to operate the equipment.
Fig. 13 DU Unit Wall Mounting...............................................................................................................................19
Fig. 14 DU Unit POLE Mounting Installation Completion Diagram...................................................................20
Fig. 15 DU Unit LUMBER WALL Mounting Installation Completion Diagram................................................20
Fig. 16 DU Unit CONCRETE WALL Mounting Installation Completion Diagram...........................................20
Fig. 17 CU MTG Bracket Image & Hole distance..................................................................................................21
Fig. 18 CU Bracket Gypsum Wall Mounting..........................................................................................................22
Fig. 19 CU Bracket Concrete Wall Mounting.........................................................................................................23
Fig. 20 CU Bracket Lumber Wall Mounting.......................................................................................................... 23
Fig. 21 CU MTG Bracket – CU SET Connection Image .......................................................................................24
Fig. 22 CU Installation Sequence.............................................................................................................................24
Fig. 23 Power PORT Connection Digram...............................................................................................................25
Fig. 24 POWER INJECTOR Installation Diagram...............................................................................................26
Fig. 25 DU ANT Tilt Diagram.................................................................................................................................. 28
Fig. 26 Verifying reception Status Diagram...........................................................................................................29
Fig. 28 DU LED Diagram.........................................................................................................................................30
Fig. 29 CU LED Diagram.........................................................................................................................................31
Fig. 30 System Installation Diagram.......................................................................................................................32
Table 1 Band Setting.................................................................................................................................................14
This document will provide details on how to successfully install the Juni JR-20 Repeater
system. The flow chart below provides a step by step guide for installing the JR-20 Repeater
3. Locating
4. Band Setting
5. DU
6. CU
1. Start
2. Package Check
7. Power / Optimization
Fig. 1 Installation Flow Chart
8. Status Check
9. End
7
2. Component Verification and Explanation
The first step when installing the repeater is to check that all components are present and that the
parts do not have any visible faults. The figure below illustrates the items included in the Juni JR20 Repeater Kit.
Fig. 2 List of all the Components in the System
8
Fig. 3 Additional Coverage Unit Components
2.1 DONOR UNIT(DU)
The role of the Donor Unit is to communicate with the BTS. It is located outside the building
where service is to be improved. The Donor Unit can be mounted onto a wall or a pole,
depending on the specific installation needs.
Fig. 4 DONOR UNIT(DU)
9
2.2 COVERAGE UNIT(CU)
The role of the Coverage Unit is to communicate with the mobiles within the building which
needs improved coverage. It is intended for wall mounting.
Fig. 5 Coverage Unit (CU)
3. Preparing for Donor Unit and Coverage Unit Installation
Determining the proper installation location for the Donor and Coverage Units is very important,
since their position will determine the overall performance of the repeater.
The authorized installer should determine where it will be mounted in accordance with the
instructions received by Juni for best reception by the BTS.
When determining the position of the Donor Unit, the following points should be considered.
Î Where is the target Donor BTS?
Î Will the Donor Unit be mounted on a wall or a pole? (99% will be wall mounted)
Î Try to avoid areas where may possibly hinder the communication between the Donor Unit
and the BTS such as large walls.
Î The Donor Unit should not be located any more than 10 feet away from the wall penetration
or window which will allow access to the inside of the building.
When determining the position of the Coverage Unit, the following points should be considered.
Î Try to position the Coverage Unit at the center of the desired indoor coverage area.
Î Try to position the Coverage Unit so that it is clearly visible throughout the desired indoor
coverage area.
Î Make sure that the distance from the Coverage Unit to the power source is less than 20 feet.
10
4. BAND SETTING
Once the planning of the location and positioning of the Donor a nd Coverage Units is finalized,
the authorized installer should proceed with installing the Dono r and Coverage Units. But first,
the installer should set the appropriate fr equency band(s) for the repeater. The figure and table
below show the DIP Switch and the functions for each section. Usually both the PCS and
Cellular bands have to be set up.
After DIP S/W setting, turn power ON/OFF or DIP S/W 12# PIN ON/OFF.
Î DIP Switch Functions
Fig. 6 DIP Switch General Settings
PIN NO. FUNC TION STATUS
1 Cellular Band Selection
2
3
4
PCS Band Selection See the next tables below
5
6
7
8 PCS EVDO OFFSET
9 Cellular EVDO OFFSET
10 Band Selection Mode
11 Uplink RF OFF
12 Hardware Reset
PIN NO. FUNC TION STATUS
1 PCS PATH HARDWARE ON/OFF
2 CELLULAR PATH HARDWARE ON/OFF
ON : PCS Gain OFFSET 3dB(increase) ON
OFF : PCS Gain OFFSET 3dB(reduction) OFF
ON : Cellular Gain OFFSET 3dB(increase )ON
OFF : Cellular Gain OFFSET 3dB(reduction) OFF
OFF : Hardware Band Selection Mode
ON : PCS UL/DL PATH HARDWARE ON
OFF : PCS UL/DL PATH HARDWARE OFF
ON : CELLULAR UL/DL PATH HARDWARE ON
OFF : CELLULAR UL/DL PATH HARDWARE OFF
ON : Cellular B Band
OFF : Cellular A Band
ON : Software Band Selection Mode
ON : Reverse RF Power OFF
OFF : Reverse RF Power ON
ON : Reset
OFF : Normal Operation
11
BW UP LINK DOWN LINK DIP SWITCH REMARK
ON
White color
1850 ~ 1855 1930 ~ 1935
is switch.
5MHz
123456789101112
ON
1855 ~ 1860 1935 ~ 1940
123456789101112
ON
1860 ~ 1865 1940 ~ 1945
123456789101112
ON
1865 ~ 1870 1945 ~ 1950
123456789101112
ON
1870 ~ 1875 1950 ~ 1955
123456789101112
ON
1875 ~ 1880 1955 ~ 1960
123456789101112
ON
1880 ~ 1885 1960 ~ 1965
123456789101112
ON
1885 ~ 1890 1965 ~ 1970
123456789101112
ON
1890 ~ 1895 1970 ~1975
123456789101112
ON
1895 ~ 1900 1975 ~ 1980
123456789101112
ON
1900 ~ 1905 1980 ~ 1985
123456789101112
ON
1905 ~ 1910 1985 ~ 1990
123456789101112
BW UP LINK DOWN LINK DIP SWITCH REMARK
ON
10MHz
1850 ~ 1860 1930 ~ 1940
123456789101112
ON
1855 ~ 1865 1935 ~ 1945
123456789101112
12
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