Proxim ORiNOCO AP-4000M User Manual page 31

Installation and Initialization
Hardware Installation
Connecting Antenna(s) to the AP-4900M for 4.9 GHz Operation
To attach an external antenna to the AP-4900M, attach the selected antenna to the pigtail attachment connected to the
AP's antenna connector 3 (see
For a list of recommended antennas, see http://www.proxim.com/products/wifi/accessories.
Figure 2-10 AP-4900M External Antenna Connection
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, Canada, 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 antenna input
EIRP Limit = EIRP limits specified below
FL = Feeder loss including loss of connectors
G = Antenna Gain
2.4 - 2.4835 GHz (Point-to-Multipoint
2.4 - 2.4835 GHz (Point-to-Point)
4.9 GHz
5.15 - 5.25 GHz
5.25 - 5.35 GHz
5.47 - 5.725 GHz
5.725 - 5.850 GHz (Point-to-Multipoint)
5.725 - 5.850 GHz (Point-to-Point)
Figure 2-10).
Band EIRP Limit (dBm)
USA and Canada
36
When G < 6: 36
When G >/= 6, use the following
equation:
G 6 –
36 -
------------- -
3
10 MHz channel: 26
20 MHz channel: 29
23
30
30
36
No limit
AP-4000/4000M/4900M User Guide
EU
20
20
NA
23
23
30
14
14
31