3com AP2750 用户手册

Carefully unpack the standard detachable antennas. Screw the antennas on to the antenna connectors 
on the access point and hand-tighten them. After network startup, you may need to adjust the antennas 
to fine-tune coverage in your area.

For best results, adjust the antennas so that they are perpendicular with the floor and ceiling.

The access point has connectors for attaching optional external antennas and antenna cables. The tables 
below list the external antenna and cable models that are certified for use with the access point.

The 3Com antennas are dual-band, which means that they operate in both 2.4GHz and 5GHz spectra. 
You can use these antennas with either the 802.11b/g radio or the 802.11a radio.

Each antenna requires the purchase of a separate antenna cable.

For installation instructions, see the documentation that is supplied with the antenna.

CAUTION:  Do not handle the antenna tips, especially after they are connected to the access 
point. This could lead to electrostatic discharge (ESD), which could damage the equipment.

3CWE591

3Com 6/8 dBi Dual-Band Omnidirectional Antenna

3CWE592

3Com 3/4 dBi Dual Band Ceiling Antenna

3CWE597

3Com 6/8 dBi Dual-Band Hallway Antenna

3CWE580

3Com Ultra Low Loss 6-Foot Antenna Cable

3CWE581

3Com Ultra Low Loss 20-Foot Antenna Cable

3CWE582

3Com Ultra Low Loss 50-Foot Antenna Cable

NOTE: Antenna cables introduce loss of the RF signal. Always use the shortest cable that your 
application allows.

NOTE: During the installation, connect the antenna to the access point before connecting the 
Category 5 Ethernet cable. This ensures that the access point is not powered on when the 
access point is connected to the network.

10015413-AA_AP2750_QSG.fm  Page 4  Wednesday, July 26, 2006  4:50 PM