Ubiquiti airFiber AF-5XHD Manual page 24

Note: Do NOT make simultaneous adjustments on the Master and
Slave.
4. Slave Visually aim the Slave at the Master. To adjust the Slave's position,
adjust the azimuth and elevation as described in step 1.
5. Check to see if a link is established. Ensure that the Link LED is solidly lit
green and the Signal LEDs of the Slave are displaying signal levels.
6. Slave Aim the Slave at the Master to achieve the strongest signal level on the
Master.
Note: Refer to the Signal LEDs section for details on the signal values.
Note: Maximum signal strength can best be achieved by iteratively
sweeping through both azimuth and elevation.
7. Master Aim the Master at the Slave to achieve the strongest signal level on the
Slave.