User Manual

Table Of Contents
10
External Antenna Option
Warning
In order to comply with radio frequency (RF) exposure limits, the antennas for this
product should be positioned no less than 20cm from your body or nearby persons.
Statement 339
Warning
Do not locate the antenna near overhead power lines or other electric light or power
circuits, or where it can come into contact with such circuits. When installing the
antenna, take extreme care not to come into contact with such circuits, because they
may cause serious injury or death. For proper installation and grounding of the antenna,
please refer to national and local codes (for example, U.S.:NFPA 70, National Electrical
Code, Article 810, Canada: Canadian Electrical Code, Section 54).
Statement 1052
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this
equipment.
Statement 1030
To support the 802.11n radio, the 1552S access points are equipped with three N-type radio frequency
(RF) connectors (antenna ports 1, 2, and 3) on the top of the unit for external antennas with multiple
input, multiple output (MIMO) operation, as shown in
Figure 4. When using the Cisco Aironet
AIR-ANT2547V-N-HZ Dual-Band Omnidirectional Antenna, the 2.4- and 5-GHz antennas connect
directly to the access point, as shown in
Figure 5. The Cisco dual-band omnidirectional antennas use
vertical polarization. The antenna has 5-dBi gain at 2.4 GHz and 7-dBi gain at 5 GHz.
To support the 802.15.4 radio, the 1552S access points are equipped with two N-type radio frequency
(RF) connectors (antenna ports 4 and 5) on the bottom of the unit for external antennas with diversity
inputs, as shown in
Figure 4. When using the Cisco Aironet AIR-ANT2450V-N-HZ 5-dBi
Omnidirectional Antenna for Hazardous Locations, the 2.4-GHz antennas connect directly to the
access point, as shown in
Figure 5. The Cisco 2.4-GHz omnidirectional antennas use vertical
polarization and have 5-dBi gain.