Ubiquiti airFiber AF-24-US User manual

24 GHz Point-to-Point
1.4+ Gbps Radio
Model: AF-24

1
Introduction
Introduction
Thank you for purchasing the Ubiquiti Networks® airFiber® 24GHz
Point-to-Point Radio. This Quick Start Guide is designed to guide
you through installation and also includes the warranty terms.
Package Contents
airFiber AF-24 Pole Mount Bracket Pole Clamps
(Qty. 2)
Cable Ties
(Qty. 3)
Carriage Bolts
(Qty. 4)
Flat Washers
(Qty. 4)
Split Lock Washers
(Qty. 4)
Hex Nuts
(Qty. 4)
24 GHz Point to Point
1.4+ Gbps Radio
Model: AF-24
GigE PoE Adapter
(50V, 1.2A)
Power Cord airFiber AF-24
Quick Start Guide
TERMS OF USE: Ubiquiti radio devices must be professionally installed. Shielded Ethernet cable and
earth grounding must be used as conditions of product warranty. TOUGHCable™is designed for
outdoor installations. It is the professional installer’s responsibility to follow local country regulations,
including operation within legal frequency channels, output power, and Dynamic Frequency Selection
(DFS) requirements.

2
airFiber AF-24 Quick Start Guide
Hardware Overview
Side
24 GHz
Alignment Bracket
Elevation
Adjustment
Azimuth
Adjustment
Ground
Bonding Point
Lock Bolts
Lock Bolts

3
Hardware Overview
Back
Lock Bolts
Lock Bolts
Azimuth
Adjustment
24 GHz
Lock Bolts
Lock Bolts
Cover Lock
Elevation
Adjustment
Port Cover

4
airFiber AF-24 Quick Start Guide
Interfaces
Reset Data Aux ConfigLED Display
Interface Description
Reset
To reset to factory defaults, press and hold the Reset
button for more than five seconds while the unit is
powered on.
Data 10/100/1000 Mbps port handles all user traffic.
Aux Port for audio tone aiming.
LED Display Digital display used for power, status, and mode
information.
Config
10/100 Mbps, secured port for configuration. By
default, this is the only port that can monitor,
configure, and/or update firmware.
LEDs
Link/Act
Speed GPS
Modulation Link/Act
SpeedRX Power
Master/Slave RF Link Status

5
Hardware Overview
LED State Status
Data
Speed Off 10/100 Mbps
On 1000 Mbps
Link/Act
Off No Ethernet Link
On Ethernet Link Established
Random Flashing Ethernet Activity
Aux
GPS
Off No GPS Synchronization
On Operational (Strong Signal)
Normal Flash* Operational (Weak Signal)
Modulation
Off ¼x or 1x (QPSK SISO)
Short Flash* 2x (QPSK MIMO)
Normal Flash* 4x (16QAM MIMO)
Long Flash* 6x (64QAM MIMO)
LED Display
RX Power
(-dBm)
Number Decodable RX Signal
Flashing Number Undecodable RX Signal
Overload Condition
Master/
Slave
Off Slave Mode
On Master Mode
RF Link
Status
Off RF Off
Short Flash* Syncing
Normal Flash* Beaconing
Long Flash* Registering
On Operational
Config
Speed Off 10 Mbps
On 100 Mbps
Link/Act
Off No Ethernet Link
On Ethernet Link Established
Random Flashing Ethernet Activity
* Short Flash (1:3 on/off cycle)
Normal Flash (1:1 on/off cycle)
Long Flash (3:1 on/off cycle)

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airFiber AF-24 Quick Start Guide
Installation Requirements
• 17 mm wrench
• 13 mm socket wrench or driver
• Clear line of sight between airFiber radios
• Clear view of the sky for proper GPS operation
• Mounting location with < 0.5° displacement due to twist and
sway under wind loading
• Mounting point:
• At least 1 meter below the highest point on the structure
• For tower installations, at least 3 meters below the top of the
tower
• Ground wires – min. 8 AWG (10 mm2) and max. length: 1 meter.
As a safety precaution, ground the airFiber radios to grounded
masts, poles, towers, or grounding bars.
WARNING: Failure to properly ground your airFiber
units will void your warranty.
• (Recommended) 2 Outdoor GigE PoE surge protectors
Note: For guidelines about grounding and lightning
protection, follow your local electrical regulatory codes.
• Outdoor, shielded Category 5e (or above) cabling and shielded
RJ-45 connectors should be used for all wired Ethernet
connections. Category 6 is required for installations with long
cable runs (up to 100 m).
We recommend that you protect your networks from harmful
outdoor environments and destructive ESD events with
industrial-grade, shielded Ethernet cable from Ubiquiti Networks .
For more details, visit www.ubnt.com/toughcable
Installation Overview
We recommend that you configure your paired airFiber radios
before mounting. Below is an overview of the installation with
specific details on the following pages:
• Connect Power over Ethernet to the Data port, and connect an
Ethernet cable between your computer and the Config port.
• Configure device settings in the airFiber Configuration Interface.

7
Connecting Power over Ethernet
• Once configuration is complete, disconnect the cables to move
the airFiber radios.
• Reconnect at the site.
• After you have mounted the airFiber radios, establish and
optimize the RF link.
Connecting Power over Ethernet
1. Turn the Cover Lock to the Unlocked icon. Slide the Port Cover
down to remove it.
24 GHz
2. Connect an Ethernet cable to the Data port.

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airFiber AF-24 Quick Start Guide
3. Connect the Ethernet cable from the Data port to the POE port
on the GigE PoE Adapter.
4. Connect the Power Cord to the GigE PoE Adapter, and then plug
the Power Cord into a power outlet.

9
airFiber Configuration
airFiber Configuration
The instructions in this section explain how to access the airFiber
Configuration Interface and configure the following settings:
• Wireless Mode Configure one airFiber AF-24 as the Master and
the other as the Slave.
• Duplex The airFiber AF-24 supports both half-duplex and
full-duplex operation. Half-duplex operation provides more
frequency planning options at the cost of higher latency
and throughput. Full-duplex operation provides the highest
throughput and lowest latency; however, you have fewer
frequency management options.
- Half Duplex (default) The TX and RX Frequencies can be the
same or different to suit local interference.
TX
RX
TX
SlaveMaster
Frequency A
Frequency A
RX
Half-Duplex Diagram
- Full Duplex The TX and RX Frequencies should be different.
TX
RX
TX
RX
SlaveMaster
Frequency A
Frequency B
Full-Duplex Diagram
• TX and RX Frequencies The TX Frequency on the Master must
match the RX Frequency on the Slave, and vice versa.

10
airFiber AF-24 Quick Start Guide
1. Connect an Ethernet cable from your computer to the Config
port on the airFiber AF-24.
2. Configure the Ethernet adapter on your computer with a
static IP address on the 192.168.1.x subnet (for example,
192.168.1.100).
3. Launch your web browser. Type http://192.168.1.20 in the
address field and press enter (PC) or return (Mac).
http://192.168.1.20
4. The login screen will appear. Enter ubnt in the Username and
Password fields. Select your Country and Language. You must
agree to the Terms of Use to use the product. Click Login.
Note: U.S. product versions are locked to the U.S. Country
Code to ensure compliance with FCC regulations.

11
airFiber Configuration
5. Click the Wireless tab.
6. Enter the Basic Wireless Settings:
a. For one airFiber AF-24, select Master from the Wireless Mode
drop-down. For the other airFiber AF-24, keep the default,
Slave.
b. Enter a name in the Link Name field. This should be the
same on both the Master and the Slave.
c. For the Duplex drop-down:
- Half Duplex The default mode. The TX and RX Frequencies
can be the same or different to suit local interference.
- Full Duplex The TX and RX Frequencies should be different.
d. Select a TX Frequency. This must match the RX Frequency of
your other airFiber AF-24.
e. Select a RX Frequency. This must match the TX Frequency of
your other airFiber AF-24.
f. If needed, change the Output Power, Maximum Modulation
Rate, and/or RX Gain settings.

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airFiber AF-24 Quick Start Guide
7. Configure the Wireless Security:
a. Select the AES Key Type, HEX or ASCII.
b. For the Key field:
- HEX Enter 16 bytes (eight, 16-bit HEX values: 0-9, A-F, or
a-f). You can omit zeroes and use colons, similar to the
IPv6 format.
Note: The airFiber Configuration Interface supports
IPv6 formats excluding dotted quad and "::"
(double-colon) notation.
- ASCII Enter a combination of alphanumeric characters (0-9,
A-Z, or a-z).
8. Click Change and then click Apply.
9. In-Band Management is enabled by default, so each airFiber
radio must have a unique IP Address. (If the airFiber radios use
the same IP Address, then you may lose access to the airFiber
radios via the Data ports.) To change the networksettings:
a. Click the Network tab.
b. Change the IP Address, Netmask, and other settings to make
them compatible with your network.
c. Click Change and then click Apply.
Repeat the instructions in the airFiber Configuration section on
your other airFiber radio. After you have configured the airFiber
radios, disconnect them and move them to your installation site.

13
Hardware Installation
Hardware Installation
To install the airFiber AF-24:
1. Insert the four Carriage Bolts into the Pole Mount Bracket.
2. Attach the Pole Mount Bracket to a pole.
Note: The mounting assembly can accommodate a
Ø 51 - 101 mm (2.0" - 4.0") pole.
a. Orient the Pole Mount Bracket around the pole so it is aimed
in the direction of the other airFiber AF-24.
b. Insert the Carriage Bolts into the Pole Clamps.
c. Secure the clamps with the Flat Washers, Split Lock Washers,
and Hex Nuts.
Note orientation of slots
Aim towards link

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airFiber AF-24 Quick Start Guide
3. Loosen, but do NOT remove the eight Lock Bolts located on the
Alignment Bracket.
4. Ensure that there is a 6 mm gap between the head of each
Serrated Flange Screw and the Alignment Bracket.
6 mm

15
Hardware Installation
5. Lift the airFiber AF-24 and align the four Serrated Flange Screws
with the slots on the Pole Mount Bracket. Seat the screws in the
slots. Securely tighten the screws.
WARNING: To prevent injury, ensure that all four screws
are seated and fully tightened.

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airFiber AF-24 Quick Start Guide
6. Attach a ground wire:
a. Remove the nut from the Ground Bonding Point.
b. Attach a ground wire (min. 8 AWG or 10 mm2) to the lug and
replace the nut to secure the wire.
c. Secure the other end of the ground wire to a grounded
mast, pole, tower, or grounding bar.
WARNING: Failure to properly ground your airFiber
units will void your warranty.
Note: The ground wire should be as short as possible and
no longer than one meter in length.

17
Connecting Ethernet
Connecting Ethernet
1. Turn the Cover Lock to the Unlocked icon. Slide the Port Cover
down to remove it.
24 GHz
2. Connect a TOUGHCable or other outdoor, shielded CAT5e/6
cable to the Data port.
3. Create a strain relief for the Ethernet cable by feeding a
CableTie through the tie slot under the cable. Then wrap the
Cable Tie around the cable and tighten.

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airFiber AF-24 Quick Start Guide
4. Connect the Ethernet cable from the Data port to the POE port
on the GigE PoE Adapter.
5. Connect an Ethernet cable from your LAN to the LAN port on
the GigE PoE Adapter.
6. Connect the Power Cord to the PoE Adapter, and then plug the
Power Cord into a power outlet.
Note: For added protection, we recommend installing
two GigE PoE surge protectors. Install the first surge
protector within one meter of the airFiber Data port, and
install the second surge protector at the ingress point of
the location housing the wired network equipment.