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1. Adjust the outdoor antenna direction, keeping it away from the indoor antenna. Restart the booster.
2. Increase the vertical or horizontal distance between the outdoor antenna and indoor antenna. Restart the booster.
3. Use barriers such as walls to increase the isolation.
4. Change the indoor antenna type to another one with a more directional pattern. Orient the indoor antenna and outdoor
antenna so that they point in opposite directions.
5. Reduce the booster's downlink gain using the manual gain control. Keep the uplink gain value and downlink gain value
the same, then restart the booster. Note: Uplink gain must be equal to or not less than 5dB below the downlink gain to
avoid interference with the local carrier's network.
Target: The ISO issues are solved when the ISO LED is "Green" or " Slow Flashing Green" or no flashing ISO legend.
Eliminate Flashing ALC legend and Quick Flashing Green, Quick Flashing
Red Alarm LED problems：
1. Adjust the antennas' direction or position to lower downlink received signal level.
2. Slowly reduce the downlink gain using the Manual Gain Control.
3. If the above methods don't work, reduce the booster's gain with an external attenuator in line with the outdoor
antenna or replace it with a lower gain antenna.
Target: The overload issues are fixed when the Alarm LED is " Green" or "Slow Flashing Green" or no flashing ALC
legend. Please note that a " Green" LED indication may result in smaller coverage area. This can be improved by
adjusting the outdoor antenna to receive a stronger signal.
Eliminate poor coverage problems when Power "-" legend on LCD and
Alarm LED is Green：
1. If the signal has not been improved, please check below：
The weak downlink signal leads to the low output signal level. Change the direction or position of the outdoor
antenna. You may also try replacing the outdoor antenna with a higher gain antenna to increase the incoming signal.
Check if it is necessary to add more indoor antennas. Barriers such as walls can block the signal indoors. You should
also check the booster to make sure the power is maximized. Try installing more indoor antennas or replace the
booster with one of higher power.
2. If the signal in some part of the house/building hasn't been improved, try the following：
Check if the indoor antenna is installed correctly. Try moving the antenna position to improve the coverage.
Try adjusting the direction of the indoor antenna.
3. Remark：
When increasing the downlink gain make sure the isolation is adequate to prevent system oscillation.
Note: The flashing ISO and Alarm status indicates that ISO and ALC functions are working properly and the problems of
self-oscillation and strong downlink signals are fixed. In most cases, there is no need to take any additional measures
except for deep self-oscillation or excessively strong signals from the cell tower. The self-adaptive ALC and isolation gain
processing system automatically solve most problems.
Product Warranty
30-Day Money-Back Guarantee All HiBoost products are protected by 30-day money-back guarantee. If for any reason
the performance of the received product is not acceptable，the client can return the product within30-day period and
get spent money back.2-Year Warranty HiBoost signal boosters are covered with 2-year warranty. Huaptec offers two
options for the products under warranty: repair or replace.This warranty does not apply to HiBoost signal boosters or kits
that have been subjected tomisuse, abuse, neglect or mishandling and that have its physical or electronic properties
altered or damaged. Failure to use surge protected AC power strip with at least a 1000 Joule rating will void your
warranty.All HiBoost products that are packaged with HiBoost accessory products are intended for use and resale as a
single unit, and such product kits are required to be sold to the end users or subsequent reseller as packaged.For any
questions or suggestions do not hesitate to contact Huaptec Support Team on the phone 044- 20-3239 5802 or by
e-mail sales2@huaptec.eu
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