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 system shows “Device was damaged” note, it means that the uplink/downlink was damaged.
Contact customer service for repair.
What signal level in dBm is optimal for the correct booster functioning?
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.
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:
◦ iOS. Type *3001#12345#* and hit Call
◦ Android. Type *#*#197328640#*#* to activate
◦ Windows. Type ##3282# and start.
◦ Blackberry. Press TOOLS, SETTINGS, STATUS or OPTIONS, STATUS.
Note! To get parameters for 2G, 3G and LTE, disable WiFi. In case you cannot find Field Test
Mode on your cell phone, use bars on the screen of your mobile phone to evaluate the change.
If the signals in most areas have not been improved, please check recommendations below again:
- Weak input signal leads to low output power. To increase input signal power level, change the
direction of the outdoor antenna or its installation position or replace it for an antenna with higher
gain.
- Check whether it is necessary to use additional indoor antennas as barriers block signal
penetration; also check whether the repeater’s power is enough; please install extra indoor
Summary of Contents for LCD-1200GW
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