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For the optimal functioning of the booster, the BS (input) readings should be between - 65 and 50 dBm. The MS (output
power) readings must be b05 and +15 dBm. Device Gain must be 65/65 dB. If the BS is lower than - 65dBm, the
coverage will be smaller. However, the device can work normally. If the BS is too weak, it'll be necessary to adjust the

position of the outdoor antenna by raising it as high as possible (on a pole on the rooftop) and pointing it towards the
provider's nearest base station. If the BS is higher than - 50 dBm, the device will have a self-excitation issue. In those

conditions, the output signal will drop during communications. If the two antennas are placed very close to each
other, it will evoke self-excitation. To fix the problem, you would need to place the outdoor antenna at the largest
possible distance from the indoor antenna.

In case of installation errors an exclamation point/arrow appears on the LCD screen. It happens in two cases:

1. Input signals (external BS) are weak.

It can happen that even with a weak signal the amplifier works well. In this case, nothing should be done.
Just ignore a flashing exclamation point. However, if the indoor coverage is still very low, it will be
necessary to adjust the position of the outdoor antenna so that it can pick up a stronger signal. For that,

try 3 possible solutions:

Solution 1. Direct the outdoor antenna to provider’s nearest base station.

Solution 2. Change the position of the outdoor antenna. Try to put it as high as possible.

Solution 3. Reinstall the outdoor antenna trying to avoid obstacles between the antenna and provider’s
base station.

2. The separation between the two antennas (outside and inside) is not sufficient.

This can cause interference between antennas and, as a result, the device will reduce the device gain. The
output signals will, therefore, be very weak. To avoid the risks of this type of malfunction, make sure not to

put the 2 antennas too close to each other, (D = 10-20 m) and never to orient them face to face, ideal would

also be that they are not in direct vision (use of a mineral or metallic obstacle, wall, ceiling, slab, etc.), and
they aim opposite directions, or at least frankly different.

Does my signal booster work if its LCD screen is switched off? What does Sleep mode mean?

The signal booster enters into Sleep mode only when you don’t use it. During Sleep mode only the LCD display turns

off, while the amplification system keeps on functioning. This function allows saving energy. In case you need to see

information on the screen, just push any button.

Can I use 1 indoor antenna if I don’t need 2?

Yes, you can use only 1 indoor antenna if the distance between both indoor antennas in your case cannot exceed 5m.
However, if you can install the indoor antennas at the distance exceeding 5m or create some obstacles like walls

between them, we recommend you using 2 indoor antennas for more effective signal distribution and larger coverage.

7.4. System Test

7.4.1. Check whether the coverage is good

1. Take a test with a mobile phone or a data card (engineering mobile phone is preferred).

To test signal level with a cell phone, make use of its engineering mode (Field Test Mode), which is an
application available in free access or a phone mode requiring no extra setups. On most used mobile OS
(operating systems) the test mode can be started as follows:

Содержание LCD-300GD

Страница 1: ...WWW MOBILE SIGNAL BOOSTERS SHOP INSTALLATION GUIDE PHONE SIGNAL BOOSTER Nikrans LCD 300GD Freq 900 1800 MHz Coverage 3300 ft ...

Страница 2: ...eet 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 modul...

Страница 3: ... 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 ...

Страница 4: ... sufficient enough for providing uninterrupted connectivity in shops restaurants cafes basement offices and even big apartments Home Mobile Phone Booster Nikrans LCD 300GD is the most cost effective and reliable booster that you can use to improve your network coverage Here are some additional features of it LCD display An LCD display is helpful for both novices and experts It improves user experi...

Страница 5: ... Up link freq 890 915 1710 1785 MHz Down link freq 935 960 1805 1880 MHz Up link Gain 67 dB Down link Gain 72 dB Power supply Input AC90 264V output DC5V 2A Working t C 25 55 Humidity 5 95 Size mm 181 142 33 Booster Weight 1 2 kg dBm 16 dBm ...

Страница 6: ...e 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 m...

Страница 7: ......

Страница 8: ...e of the building aiming away from the building which will reduce amount of possible obstacles For your convenience and acceleration of the process perform the testing in pair 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...

Страница 9: ...per 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 feed...

Страница 10: ...ggi 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 ...

Страница 11: ...or smoke or on a cool and ventilated wall to ensure excellent heat dissipation 2 Installation height should be sufficient for RF cable wiring heat dissipation and maintenance 3 Independent and stable power supply is necessary 7 1 2 Power requirement Generally AC 100 264V AC 50 5Hz power supply is required 7 2 Installation Steps 7 2 1 Installation schemes Installation with 1 indoor antenna ...

Страница 12: ...onnect outdoor and indoor antennas in the proper way 5 Test the signal of your mobile telephone a maximum quantity of bars should be indicated on the display of your phone in each corner of the location within booster coverage zone In case the mobile signal is still instable try to change the position of the outdoor antenna for more proper one Important notes for installation 1 Cables from outdoor...

Страница 13: ...rrectly according to the instructions above 8 Using multiple Signal Boosters in one installation could cause interference to the base station except for the In Line Signal Boosters 7 2 2 Repeater s ports description 1 Outdoor port BS for connecting the outdoor antenna by cable 2 Indoor port MS1 for connecting the indoor ceiling antenna by cable 3 Indoor port MS2 for connecting the indoor whip ante...

Страница 14: ...and solutions below in Questions Solutions paragraph If the problem is resolved the screen will display as below No arrow means that the repeater works correctly LINE 1 BS shows the level of outdoor incoming signal for the corresponding frequency band Make sure it is as low as possible Note For the optimal functioning of the booster the BS input index should be from 65 to 50 dBm If the BS is lower...

Страница 15: ...y AGC function for automatic gain adjustment Note In LINE 4 in its right corner can appear the exclamation point or an arrow It denotes an installation error Use UP and DOWN buttons to see the reasons For more details read the section QUESTIONS SOLUTIONS UP Button Go to the previous page to check the functioning status of the device or see the error description DOWN Button Go to the next page to c...

Страница 16: ...oth antennas to avoid self oscillation Mount them at least 15m one from another If the device detects self oscillation between the antennas and says that the system is being adjusted it means that the system has detected the problem of bad isolation between the antennas and AGC is adjusting the system gain automatically to make the device work correctly No actions are required from you If the syst...

Страница 17: ...ween the antenna and provider s base station 2 The separation between the two antennas outside and inside is not sufficient This can cause interference between antennas and as a result the device will reduce the device gain The output signals will therefore be very weak To avoid the risks of this type of malfunction make sure not to put the 2 antennas too close to each other D 10 20 m and never to...

Страница 18: ... s power is enough please install extra indoor antennas or replace the repeater for another model with higher power level 2 If the signals in small parts of the area have not been improved please check the following Check whether the indoor antenna is installed correctly or not you may try to change the antenna location to improve coverage Check if it is necessary to adjust the direction of the in...

Страница 19: ...by ATT DIP if the above listed methods don t work The following measures can also be helpful Use the roof of the building to enlarge isolation Please try to place the outdoor antenna and indoor antenna on different floors Use some obstacles Such as walls 2 The repeater s power is on but the phone cannot get connected to the network and still can not communicate Reason 1 There are loose or wrong co...

Страница 20: ... installing the repeater what should I do Check if the repeater s power supply works normally or not 3 If repeater s power supply is normal ALM light is on or flashing all the time what should I do Firstly check whether all connectors are connected well or not If it is all right please adjust the direction of the outdoor and indoor antenna Make sure the horizontal distance is 75 feet or more the v...

Страница 21: ...end all in one solutions covering up to 5000 m2 Depending on the model boosters operate in GSM DCS CDMA LTE or combination of these standards at 850 2100 MHz frequencies The product line is extended with a series of antennas splitters and other accessories for completing exclusive custom projects of any difficulty level Nikrans product development process is rigorously assessed to comply with ISO ...

Страница 22: ...at this signal booster is in compliance with the essential requirements and other relevant provisions of Radio Equipment Directive RED 2014 53 UE CE marking info mobile signal boosters shop 448000698689 Sales www mobile signal boosters shop ...

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