MI.NET MULTI-NETWORK COLLECTOR
5
Installation and Operation Manual
OVERVIEW
The Mi.Net Multi-Network Collector is an unattended data collector and gateway device. It is intended for indoor or outdoor use in
advanced metering infrastructure (AMI) monitoring and control applications.
The complete Multi-Network Collector system consists of a base unit and an amplifier -tower top amplifier / antenna unit
(Figure 1).
In typical applications, the collector automatically gathers relevant data from smart metering devices located within the range of
its wireless AMI network interface, for billing or analysis purposes. It transfers this data back to remotely located servers by
means of a cellular or wired Internet connection. The collector also enables devices on its local AMI network to be remotely
controlled or reconfigured through the Internet.
The collector is intended for applications where the antenna unit is installed a significant distance from the base unit,
such as on a tower or pole. A tower top amplifier is included with all collector systems to compensate for signal loss over
the connecting cable.
MI.NET MULTI-NETWORK COLLECTOR SYSTEM DESCRIPTION
The collector system delivers the maximum transmitter output power allowable by law. The collector enhances AMI network
range by enabling installation of the AMI network antenna a considerable distance from the base unit, and at a significant height
above ground level.
Increasing the AMI antenna installation height above ground significantly increases the system’s operating range. However, it is
often desirable to locate the collector base unit close to ground level for easier access to power and serviceability.
The collector system employs a remotely installed amplifier to compensate for losses over the length of the cable. This amplifier
restores transmitter power at the antenna to maximum allowable levels. To achieve optimal system performance, this amplifier is
fitted immediately below the antenna.
The remote amplifier is powered by the base unit through the coax cable connection between the two units. The fixed
collector system incorporates a standard 8dBi antenna. A smaller antenna with 6dBi gain is also available if more suitable
for site conditions.
The remote amplifier unit includes an integral bandpass filter, which attenuates strong out-of-band signals that might otherwise
impair AMI network reception. This allows the remote amplifier and AMI network antenna to be installed in relatively close
proximity (less than 500 meters) to strong sources of potential interference, such as a cellular base station system. Connection
to the remote amplifier is made by connecting the coaxial connector to the lightning arrestor connector as shown in Figure 1.
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