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When the device completes the internal self test, it shows the standby screen. If the arrow down is
displayed at the bottom right corner, the device has detected signal reception problems. In this case press
Page Down button to see possible solutions. Resolve the issue basing on the recommendations.(see
possible troubles 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 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 self-excitation issue. In such cases, the output signal
will drop during communication. If the 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 thelargest possible distance
from the indoor antenna.

LINE 2.

MS shows the output power of a booster.

Note! The MS (output power) index must be b05 and +15 dBm. Device Gain must be 65/65 dB.

LINE 3.

Device gain shows the current gain (left) and maximal gain (right) of the device. For optimal

function both values must be equal (current gain=max gain).

Line 4 shows that power supply is connected and works properly (DC5V) and automatic gain control of the
system is also active (AGC).

LINE 4.

Power DC 5V shows that power supply is connected and works properly. 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.

Summary of Contents for LCD-1200GW

Page 1: ...WWW MOBILE SIGNAL BOOSTERS SHOP INSTALLATION GUIDE PHONE SIGNAL BOOSTER Nikrans LCD 1200GW Freq 900 2100 MHz Coverage 13000 ft...

Page 2: ...et 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 i...

Page 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...

Page 4: ...ill also be able to support it Nikrans LCD 1200GW is and efficient repeater with a number of characteristics LCD displays There are 2 LCD screens on this repeater providing vital information about GSM...

Page 5: ...link freq 890 915MHz 1920 1980 MHz Down link freq 935 960MHz 2110 2170 MHz Up link Gain 65 dB Down link Gain 70 dB Power supply Input AC90 264V output DC5V 2A Working t C 25 55 Humidity 5 95 Size mm...

Page 6: ...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...

Page 7: ......

Page 8: ...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 di...

Page 9: ...er 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...

Page 10: ...gi 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 b...

Page 11: ...r 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 p...

Page 12: ...placed as straight as possible in order not to create any hindrance for signal reception and its transmission 2 Cables should be shortened to the acceptable maximum so that not to waste or decrease m...

Page 13: ...ction Choosing accessories pay attention to the two characteristics frequency and impedance All accessories shall support the repeater s frequencies For example if the repeater s frequency is GSM900 a...

Page 14: ...nd pointing it towards the provider s nearest base station If the BS is higher than 50 dBm the device will have self excitation issue In such cases the output signal will drop during communication If...

Page 15: ...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 Re...

Page 16: ...lose 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 7 4 System Test 7 4 1 Check whe...

Page 17: ...Mode and see dB parameter The closer dB signal level to 0 the better cell phone reception you ll get 105 to 100 Bad drop call 99 to 90 Getting bad signal may break up 89 to 80 OK shouldn t have probl...

Page 18: ...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 wr...

Page 19: ...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 Fir...

Page 20: ...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 se...

Page 21: ...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 Sale...

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