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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”.
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”.
LED
Status
Meaning
Solution methods
ISO LED
Green @ ISO
≤
0
No loop back or
no self-oscillation
NO action is needed
Slow Flashing
Green@ ISO =
1~14dB
Slight loop back
or self-oscillation
NO action is needed
Quick Flashing
Green@ ISO =
15~21dB
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 @ ISO
≥
22dB
Severe loop
back or self-
oscillation
Not working properly,
actions must be taken.
