Brocade Mobility 5181 Access Point Product Reference Guide (Supporting software release 4.4.0.0) - Manual (Page 39)

Brocade Mobility 5181 Access Point Product Reference Guide 25
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Access point placement
2
Antenna coverage is analogous to lighting. Users might find an area lit from far away to be not
bright enough. An area lit sharply might minimize coverage and create dark areas. Uniform antenna
placement in an area (like even placement of a light bulb) provides even, efficient coverage.
Place the access point using the following guidelines:
• Install the access point at an ideal height of 10 feet from the ground.
• Orient the access point antennae vertically for best reception.
• Point the access point antenna(s) downward if attaching to the ceiling.
To maximize the access point’s radio coverage area, Brocade recommends conducting a site
survey to define and document radio interference obstacles before installing the access point.
Site surveys
A site survey analyzes the installation environment and provides users with recommendations for
equipment and placement. The optimum placement of 802.11a access points differs from
802.11b/g access points, because the locations and number of access points required are
different to support the radio coverage area.
Brocade recommends conducting a new site survey and developing a new coverage area floor plan
when switching from 2 or 11Mbps access points to 54Mbps access points (the Mobility 5181
Access Point), as the device placement requirements are significantly different.
Antenna options
Both Radio 1 and Radio 2 require one antenna and can optimally use two antennae per radio (4
antennae total). Antenna connectors for Radio 1 are located in a different location from the Radio 2
antenna connectors. Two antennae per radio provides diversity that can improve performance and
signal reception. Brocade supports two antenna suites for the Mobility 5181 Access Point. One
antenna suite supporting the 2.4 GHz band and another antenna suite supporting the 5 GHz band.
Select an antenna model best suited to the intended operational environment of your Mobility
5181 Access Point.
Refer to the following for the antenna options available to a Mobility 5181 Access Point:
The Mobility 5181 Access Point 2.4 GHz antenna suite includes the following models:
Part Number Antenna Type Nominal Net Gain (dBi) Description
ML-2499-FHPA5-01R Omni-Directional Antenna 5.0 2.4 GHz,
Type N connector,
no pigtail
ML-2499-FHPA9-01R Omni-Directional Antenna 9.0 2.4 GHz,
Type N connector,
no pigtail
ML-2452-PNA7-01R Panel Antenna (Dual-Band) 8.0 2.4 - 2.5/4.9 - 5.99 GHz,
66 deg/60 deg
Type N connector,
with pigtail
ML-2452-PNA5-01R Sector Antenna (Dual-Band) 6.0 2.3 - 2.4/4.9 - 5.9 GHz,
120 deg Sector
Type N connector,
with pigtail