Nikrans MA800 C Manual de usuario

INSTALLATION GUIDE

Mobile Signal Repeater

CDMA Mobile Amplifier Nikrans MA800 C

CDMA, 3G | 850MHz

Coverage: 800 m2

Preface

This user’s manual describes the installation and maintenance of wide band consumer boosters. Please do read user

manual carefully before installing and maintaining repeaters. The information in this manual is subject to change without

prior notice.

1. Safety Warnings

Users must follow the principles below：

Repeater should follow system requirements; assure good grounding and lightning protection.

The power supply voltage of repeater should meet security requirements; any operation shall be carried out only

after turning off power in advance. Only the professional is authorized for the operation.

Do not dismantle machine, maintain or replace its components by yourself, because this way the equipment may

be damaged and you may even get an electric shock.

Do not open the repeater, touch the module of the repeater, or open the cover of the module to touch electronic

component. The components will be damaged due to electrostatic.

Please keep away from heating equipment, because the repeater dissipates heat during working. And do not

cover a booster with anything that influences heat dissipation.

2. Introduction and Reasons for Weak Cellular Signals

Cell Phone Signal Booster is a perfect solution for providing improvement of cellular signal reception inside a house, office,

restaurant, VIP Room, apartment, building or shopping mall.

Generally cell phones cannot pick up or maintain a strong cellular signal due to one of the two following reasons:

1. Location of the Nearest Base Station – Base stations are used to provide broad coverage. However there are many

areas in which signal strength gets reduced due to topographic peculiarities or local Governmental restrictions regarding the

height or location of base stations. Rural areas generally have fewer base stations than urban regions.

2. Natural and Man-Made Obstructions – Signal strength can also be negatively affected by trees, hills, buildings, weather

and other obstructions. You may be relatively close to a base station but still unable to make a call. This often occurs inside

houses, offices and other buildings with stucco, concrete or metal walls that may block the signal.

The Signal Booster works with two antennas. An Indoor antenna communicates with your cell phone and an Outdoor

antenna communicates with the base station (BS). The Outdoor antenna receives a signal from the BS and sends it through

the cable to the Signal Booster, where it gets amplified and re-transmitted by the Indoor antenna throughout a building.

When the Indoor antenna picks up a signal from your cellular device, the Signal Booster amplifies that signal and transmits it

through the cable to the Outdoor antenna and back to the BS.

(Note: The Signal Booster will only operate if there is an adequate signal to amplify.)

3. Model Description

Nikrans MA800 C cdma mobile amplifierboosts mobile connections of US mobile providers. The coverage area of the

model is 800 m2(8600ft2). MA800 C amplifies cellular signals at 850 MHz frequency used by most American carriers such

as Verizon, AT&T Mobility, United States Cellular Corporation, etc. for voice or 3G data transmission.Nikrans MA800 C

repeater has the following advantages:

Full Kit. The booster is shipped in a kit with 2 antennas, cables and mountings.

Auto Level Control.Booster software gain is automatically regulated by the system according to outdoor signal

conditions.

MCU control. Digital booster software alarms if the systems operates improperly.

Longer Battery Life. Mobile devices use much less power when mobile signal is stronger.

Obtain this cdma mobile amplifier and get always full coverage in your area!

To Install the booster you don ᤀ琀 need to be an engineering professional. The device is plug-and-play device and the

mounting of the whole system will take no more than 15-20 minutes. Cell phone connections start being amplified right after

you switch on the booster. Mind that you should switch on the system only after you mount the whole system.

What is no less important, this model has got internationalRoHS and FCCcertification proving its 100% safety. Mobile

phone booster decreases emissive power of mobile phones as they irradiate too much in poorly covered areas.

Nikrans MA800 C is a reliable way to obtain always accessible mobile connections!

To answer any question regarding booster choice, installation or some other issue contact our Technical Specialists.



Watch the video below to know how a mobilebooster operates.

4. Specification

Indoor coverage: 800 m2

Up-link freq: 824-849 MHz

Down-link freq: 869-894 MHz

Up-link Gain: 65 dB

Down-link Gain: 70 dB

Power supply: AC 110V～220V to DC+5V/2A

Working toC: -25 - +55

Humidity: 5-95%

Size (mm): 159 x 101 x 29,6

Booster Weight: 0,472 kg

Package Weight: 5.5 kg

dBm: 20

5. Repeater system overview

The picture below shows how simple and fast booster installation is and how effectively it works.

A Yaggi or panel antenna (it depends on the booster model and its power), as donor/outdoor antenna, is installed at the top

of the roof to pick up good mobile signals from the base station, and sends them through the cable to the booster where the

signals get amplified significantly; and then the output signals are distributed throughout the area by the indoor/server

antenna. Clear phone calls or high speed mobile data are immediately achieved within the area.

A repeater kit includes:

Outdoor Antenna：

Outdoor panel or wide band Yaggi is recommended.

Function: To pick up outside signals from the base station and send them by cable to the repeater; outdoor antenna

also transmits the uplink signals from the repeater back to the base station.

Indoor Antenna:

It is mounted inside a building to transmit the improved signals throughout the coverage area.

Cables: Сoaxial cables for indoor and outdoor antennas.

Mountings: Special mountings for antennas and the booster (depends on a booster model)

Power Supply

Optionally:

Splitters or couplers: when the building structure is too complicated or there is big loss due to thick walls or other

reasons, splitters or couplers shall be used so that more antennas can be installed in separate zones to distribute the

signals to each corner of the coverage area.

Additional indoor antennas: when the building structure is too complicated

6. Antennas and Cables Setting Up

6.1. Outdoor antenna installation

The repeater’s main function is to improve weak RF signals in an area. The formula is: Input power + Gain= Output power.

The signal strength from an outdoor antenna directly affects the efficiency of the indoor coverage. It is very important to

choose the correct outdoor antenna location in order to get the best signal.

Testing signal strength received by an outdoor antenna using a mobile phone:

The mobile phone shall display full bar signals in location where the outdoor antenna is installed

Phone calls or data transmission shall be smooth and stable. It is recommended to test the signal 3 times in location

where an outdoor antenna is to be installed

As shown from the illustration above, you should test the signals in points from A to E, and select a best place that

displays full bar signals.

Outdoor antenna installation Requirements:

Outdoor antenna should be installed on the roof of the house or in some other place where your mobile device is

within coverage zone. Mobile signal should be as strong that at least three-four bars are indicated on your phone

display.

Outdoor antenna should be fixed in straightly.

It is necessary to waterproof connectors of the outdoor antenna and feeder lines.

Repeater is a two-way signal amplifier. So proper isolation between outdoor antenna and indoor antenna is necessary

in order to avoid self-oscillation. A perfect example of self-oscillation is when you take a MIC and a loudspeaker for

example; if they are too close to each other, it could cause big noise.

If isolation can’t be achieved due to limited distance, the roof of the building, walls or any other barriers can be used

between antennas to increase isolation.

Installation of a panel antenna as an outdoor antenna

Installation of a wide directional antenna as an outdoor antenna

Installation of a Yaggi antenna as an outdoor antenna

6.2. Cable layout and connector assembly

1. Keep the type, specifications, routing direction, location and curvature radius of cables in compliance with the model

requirements. Place cables in correct order, bend them smoothly, and protect the surface from any damage.

2. Place RF cables separately from power cables. Take proper isolation measures if they have to be placed on the same

cable racks owing to the site condition restrictions.

3. Fasten all connection parts of the whole system in correct order, from the antenna to repeater interfaces, and make

sure that the electrical interfaces are well contacted. Give waterproof treatment to outdoor connection parts.

4. Take lightning protection measures for the antenna and feeder system in accordance with the system requirements.

Avoid deforming the antenna feeder where grounding clips are placed, and give waterproof treatment to the feeder.

6.3. Indoor antenna installation

Correct antennas types shall be used according to the site conditions and the requirement.

1. Omni antenna (ceiling Omni or whip antenna) shall be installed in the center and radiate all directions.

2. It is better to use a directional panel antenna or Yaggi antenna when the area shape is long and narrow (corridors,

long row of houses in two sides, tunnels or elevators or rural open space).

Requirements to indoor antenna installation:

indoor antenna should be 5 meter distance from an outdoor antenna

indoor antenna should be at least 2 meters above the ground

indoor antenna should be fixed vertically with the ground.

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