info_i_25x25.png See important information about Ubiquiti Devices and KRACK Vulnerability in this article. We will update this document as more information becomes available.

airFiber - What do the LED patterns on AF5X unit mean?

AirFiber 5X incorporates a new way to show signal strength, which automatically adjust LED threshold based on expected signal strength for that link (the unit uses GPS coordinates to determine link distance very accurately). 

It's important to first understand what are the ports in this unit:

  

Management Port: 10/100 Mbps, secured Ethernet port for configuration. In-Band Management is enabled by default in the airFiber Configuration Interface. When In-Band Management is disabled, the MGMT port is the only port that can monitor, configure, and/or update firmware.

Reset Button: To reset to factory defaults, press and hold the Reset button for more than 10 seconds while the device is already powered on.

Data Port: Gigabit PoE port for handling all user traffic and powering the device.

 

LEDs

  

Signal Level Once fully booted, the Signal 1-4 LEDs act as a bar graph showing how close the AF-5X is to ideal aiming. This is auto-scaled based on the link range, the antenna gains, and the configured TX power of the remote AF-5X. Each Signal LED has three possible states: On, Flashing, and Off. All Signal LEDs would be solidly on in an ideal link. If the link has a 1 dB loss, the Signal 4 LED will flash; a 2 dB loss and the Signal 4 LED will turn off. The full bar graph LED states are shown below.

 

IMPORTANT NOTE: In order to calculate an accurate expected signal level, you will need to enter the right antenna gain and cable loss in the Wireless tab. If you enter different values, you will see unaccurate results

A perfeclty aligned link should show all four Signal LEDs ON.

 

Additional LEDs

 

LED State Status
Link

Off

Short Flash*

Normal Flash*

Long Flash*

On

RF Off

Syncing

Beaconing

Registering

Operational

GPS

Off

Normal Flash*

On

No GPS Synchronization

Non-Operational (Weak Signal)

Operational (Strong Signal)

Management

Off

On

Random Flashing

No Ethernet Link

Ethernet Link Established

Ethernet Activity

Data

Off 

On 

Random Flashing

No Ethernet Link 

Ethernet Link Established 

Ethernet Activity

Power

Off

On

No Power

Powered on

 

* Short Flash (1:3 on/off cycle)

Normal Flash (1:1 on/off cycle)

Long Flash (3:1 on/off cycle)