Sixnet IndustrialPro, User Manual

Page: 50 / 72

IndustrialPro™ and MobilityPro™ Gateway
User's Guide
Copyright © 2010 Sixnet LLC. All rights reserved.
50
1.11
– November 2, 2011
11.3.1 Installation and verification
When installing the antenna, follow the FCC and Industry Canada guidelines and keep the following in mind:

Mount the antenna(s) at least 30 cm (12 inches) from other antennas

Do not install the antenna in a closed metallic enclosure (such as a cabinet or the trunk of a
car).
Once a modem has a signal, the Signal LED indicator will start flashing according to the signal strength. Additionally,
BlueVue Device Manager will display the received signal strength (RSSI) in the top right. The modem should have at the
very least one bar of signal strength.
11.3.2 Antenna diversity
The BlueTree 5000v2 and 6000 series modems except for the BT-64xx series have two antenna connectors available,
labeled Antenna and Diversity.

Antenna: This is the main antenna that is used for data transmission. It is mandatory to
have the Antenna port connected to an antenna.

Diversity: This is the diversity antenna, used to improve on the signal strength obtained
from the main antenna. This antenna is not mandatory however it will improve throughput
in low signal and fringe areas.
Diversity is a transmission technique that consists of using two separate antennas to achieve the most robust cellular
signal possible. Diversity will help achieve fast, reliable data throughput in applications that require a high amount of
bandwidth.
To get the best performance, the Diversity antenna should be placed at a minimum of 5/8 of a wave length away from
the other antenna. Therefore, the minimum spacing for antennas in the 800 MHz frequency is 5/8 * 13.5” = 8.5”. The
diversity antenna can be spaced further away than this, ideally in increments of 13.5”: 22”, 35”, etc. For a 1900 MHz
only network, the optimal distance would be 5/8 * 6.2” = 4”.