User Manual

Table Of Contents

Information for Professional Installers AP-4000/4000M/4900M Safety and Regulatory Information

Information for Professional Installers

Optionally, a professional installer can connect two to four external antennas to the AP-4000/4000M/4900M.

NOTE: AP-4000 models 8670-US2 and 8670-AU do not provide external antenna connectors for 5 GHz (802.11a)

operation.

All products using external antennas must be professionally installed, and the transmit power of the system must be

adjusted by the professional installers to ensure that the system EIRP is in compliance with the limit specified by the

regulatory authority of the country of application.

Follow the mounting instructions included with your external antenna, and then connect the antenna cable to the AP.

Then see the following sections:

• Adjusting Tx Output Power

• Antenna Types and Maximum Gain

Adjusting Tx Output Power

NOTE: When the system is set to transmit at the maximum power, professional installers must ensure that the maximum

EIRP limit is not exceeded. To achieve this, they may have to add attenuation between the device and the

antenna when a high gain antenna is used.

Use the following formula in combination with the table of EIRP limits in US and EU countries to calculate system transmit

power (based on EIRP limits) of these countries:

Tx Power (dBm) = EIRP Limit (dBm) + FL (dB) – G (dB)

where:

Tx Power = Output power measured at the end of the required coax adaptor cable

EIRP Limit = EIRP limits specified below

FL = Coax loss (including loss of connectors) between the end of the white coax adaptor cable and the antenna

G = Antenna Gain

Transmit output power can be reduced by selecting “Enable TX Power Control” on the Configure > Interfaces > Op

Mode screen. Refer to the AP-4000/4000M/4900M User Guide for more information.

Band EIRP Limit (dBm)

USA and Canada EU

2.4 - 2.4835 GHz (Point-to-Multipoint) 36 20

2.4 - 2.4835 GHz (Point-to-Point) When G < 6: 36

When G ≥ 6, use the following

equation:

36 -

4.9 GHz 10 MHz channel: 26

20 MHz channel: 29

5.15 - 5.25 GHz 23 23

5.25 - 5.35 GHz 30 23

5.47 - 5.725 GHz 30 30

5.725 - 5.850 GHz (Point-to-Multipoint) 36 14

5.725 - 5.850 GHz (Point-to-Point) No limit 14

G6–

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