User's Manual

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Measures: One of the actions below are recommended to eliminate ISO problems,
please note that these actions are the same for "Quick flashing green" , "Quick
Flashing red" and “OFF”.
1. Adjust the antennas’ pointing directions or locations or increase the distance
between them.
2. Increase the vertical or horizontal distance between the outdoor antenna and
indoor antenna.
3. Use barriers like walls to increase the isolation.
4. Change the indoor antenna type to an antenna with a more directional antenna
pattern. Orient the indoor antenna and outdoor antenna so they point in
opposite directions.
5. Reduce the booster’s downlink gain using the manual gain controls. 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 cell site network.
Target: The ISO issues are solved when the ISO LED is "Green" or "Slow Flashing
Green".
4.4 Manual Gain Control Operation
There are 4 operation modes relative to the control buttons: a long press for more
than 3 seconds on the “SET” button, short press on the “SET” button, short press on
“DEC-” button and short press on “INC+” button.
When the LCD is in the fixed display mode, press the “SET” key for 3 seconds and it
will start up in the Gain Setting Mode.
 Press the “SET” key shortly, and the LCD will switch to the next value (uplink
or downlink gain for a different band).
 Press the “INC+” (or “DEC-”) key, and the value of the current gain item will
change to a higher (or lower) one.
 Press the “SET” key for 3 seconds, and the LCD will return to the fixed
display mode. (For more details refer to Manual Gain Control (MGC) below.
Quick Flashing Green
Deep loop back or self-oscillation
Not working properly.
Check coverage. Leave it as is if it’s
good. Actions must be taken if
coverage is not good.
Quick Flashing Red
Severe loop back or self- oscillation
Not working properly, actions must be
taken.
OFF
The booster automatically shuts off
for protection due to very severe
self- oscillation.