Frequency Settings; Wireless Security - Ubiquiti AirFiber 11FX User Manual

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Quick start manual (33 pages)

Table Of Contents

Table of Contents

Enlarged version

Chapter 5: Wireless Tab

Output Power (EIRP)

Defines the maximum average

transmit output power (in dBm) of the airFiber X radio.

To specify the output power, use the slider or manually

enter the output power value. The transmit power level

maximum is limited according to country regulations.

Note:

The Antenna Gain and Cable Loss should be

configured before the Output Power. This is because

the range of the Output Power field is affected by

the Antenna Gain and Cable Loss values – changing

the antenna gain or cable loss adjusts the maximum

and minimum values you can select using the

Output Power slider. Since the Output Power

already includes the antenna gain and cable loss, it

represents EIRP; therefore, the value of Output Power

is actually the total power the radio is transmitting

over the air. The current transmit power is displayed

by the TX Power (EIRP) field on the Dashboard.

Note:

The airFiber X radio may limit the output

power to a value less than the value specified

by this field, to comply with regulatory region

requirements. For a list of maximum output power

values by country and region, refer to "Frequency

Ranges and Power Levels per Country/Region" on

page 47.

Antenna Gain

Enter the gain in dBi of the antenna that is

used in your installation. An improper value could cause

DFS false detections when operating on DFS frequencies.

Cable Loss

Enter the cable loss in dB of the cable that is

used in your installation. An improper value could cause

DFS false detections when operating on DFS frequencies.

Receive Target Power

To use the Automatic Transmit

Power Control (ATPC) feature, enable this option and enter

the desired power level that the receiver (on the far end of

the link) should see from this radio.

In ATPC, each airFiber X radio monitors the amount of

power received by the radio at the other end of the link.

If the reported value differs from the Receive Target Power

value, the radio automatically adjusts its transmit output

power to match the Receive Target Power value. The radio

will use its Output Power (EIRP) setting as the maximum

level at which it will transmit to maintain the Receive Target

Power.

Maximum Modulation Rate or Modulation Rate

modulations support greater throughput but generally

require stronger RF signals and a higher Signal‑to‑Noise

Ratio (SNR). By default, Automatic Rate Adaptation is

enabled, and Maximum Modulation Rate is displayed. This

allows the airFiber X radio to automatically adjust the

modulation rate to changing RF signal conditions. Under

certain conditions, you may prefer to lock the Maximum

Modulation Rate to a lower setting to improve link

performance.

When Automatic Rate Adaptation is disabled, Modulation

Rate is displayed. Lock the Modulation Rate to the setting

of your choice.

Select one of the available modulation rates. The available

values depend on the Radio Mode setting:

• If Radio Mode is set to MIMO:

• 10x (1024QAM MIMO)

• 8x (256QAM MIMO)

• 6x (64QAM MIMO)

• 4x (16QAM MIMO)

• 2x (QPSK MIMO)

• 1x (QPSK SISO)

• ¼x (QPSK SISO)

• If Radio Mode is set to SISO:

• 5x (1024QAM SISO)

• 4x (256QAM SISO)

• 3x (64QAM SISO)

• 2x (16QAM SISO)

• 1x (QPSK SISO)

• ¼x (QPSK SISO)

Automatic Rate Adaptation

option allows the airFiber X radio to automatically adjust

the modulation rate to changing RF signal conditions.