Avocent Emerge MPX Installer/User Manual page 81

Antenna Options
Various antenna options are available for MPX extenders, including specialized antennas, antenna
extension kits and lightening arrestors. The following sections describe these options and offer an
overview of installation instructions.
NOTE: ISM band antennas and UNII band antennas are tuned for operation in their specific bands. An ISM
antenna is not effective for UNII-band radio transmission and vice-versa. Take care to choose an appropriate
antenna for the wireless channel that has been selected.
Installation of antenna options
Installation of antenna options have a direct impact on effective radiated power of MPX extenders.
NOTE: Because antenna options have a direct impact on the effective radiated power of MPX extenders, it is
important to use only Avocent-certified options. Furthermore, antenna options should be used only as described
herein. Misuse of these options could result in excessive radiated power or degraded performance.
To Install antenna options:
1. Physically install the antenna, arrestor or extender as described in the instructions provided
with the option. It is acceptable to intermix antenna types within an extension network. For
example, a transmitter equipped with omni-directional antennas may communicate with
receivers using directional antennas. If you intermix antenna types on the same unit, then con-
figure the unit for the highest gain antenna. For example, if you install a 3dB and 8dB gain
antenna on the same extender, then configure the extender for use with your 8dB antenna.
2. Launch a browser client to the transmitter.
3. Select the System Settings page. Figure 3.3 on page 29 illustrates the System Settings page.
4. Within the Antenna Type pull-down menu, select the antenna installed on your extender. The
following specialized antennas are available for use with MPX extenders:
a. LGA51G-OMN: A low gain omni-directional antenna tuned for best performance in the
UNI 1 and 2 bands. This is the default antenna.
b. HGA51G-DIR30: A high gain, directional antenna tuned for best performance in the UNII
1 and 2 bands.
c. LGA55G-OMN: A low gain omni-directional antenna tuned for best performance in the
UNI 3 and ETSI bands.
d. LGA24G-OMN: A low gain omni-directional antenna tuned for best performance in the
ISM band.
e. IGA24G-OMN: An intermediate gain omni-directional antenna tuned for best
performance in the ISM band.
f. Several generic antennas are listed in the pull-down menu. These entries represent
antennas that are anticipated for future release by Avocent. Use of third-party antennas is
neither implied or supported by means of these entries. If you purchase an optional
Appendices 67