Hoyles Inovonics EchoStream EE4232MR Manual

EE4232MR 32 Zone Multi-Condition Receiver with Relay Outputs
Overview
Inovonics EchoStream technology is designed to
minimize dead spots in transmission areas using diversity
reception and advanced signal processing. The
EE4232MR receiver allows you to add up to 32
transmitters and 12 outputs to any application and
includes a back tamper for increased tamper security.
Installing an Inovonics Security System
The EchoStream survey kit measures the signal strength
of high-power repeater and sensor messages to help
optimize your EchoStream system.
Figure 1 – Sample EchoStream System
The EchoStream survey kit provides you with two signal
strength measurements: signal level and signal margin.
Signal level: The signal level is the measurement of the
overall decibel level of the message.
Signal margin: The signal margin is the measurement of
the decibel level of the message, minus the decibel level
of any interfering signals. Inovonics Wireless equipment
should be placed within a facility such that all end
devices produce signal margin readings of at least 4
decibels.
Both the signal level and signal margin are measured in
decibels. Because signal strength and signal margin are
measured on a logarithmic scale, the difference between
a decibel level of 3 (Weak) and a decibel level of 4 (Good)
is a much larger difference than it would be on a linear
scale.
RF Signal Protection
While wood, drywall and glass usually let the RF signals
pass, some materials may inhibit or attenuate radio
frequency (RF) signal propagation by blocking, reflecting,
deflecting or absorbing RF signals.
Consider anything between transmitters and repeaters
and/or the receiver. Is there concrete and steel
construction? Are there earthen berms or hills? Are
there a lot of trees? Devices should be mounted such
that they are least affected by these elements.
For best results, transmitters and repeaters should be
mounted at the optimal height to achieve line of sight to
repeaters and/or the receiver. Usually this means they
will be mounted as high as possible.
Following are some typical obstacles to RF signal
propagation:
Material Affect
Metal Can reflect,
construction, absorb and/or
including disrupt RF
ductwork; signals.
pipes; studs;
stucco,
plaster or concrete
with
wire mesh;
satellite
dishes, metal-lined
rooms such as
walk-in
coolers or
freezers;
metal siding, safes,
etc.
Completely
enclosed metal
boxes/enclosures.
Solar panels,
cinder block walls,
windows
with built-in solar
tinting.
Vegetation.
Automobile and
truck traffic.
Recommendation
Perform a site
survey using an
Inovonics
Hoyles Electronic Developments Ltd
Sandwash Close, Rainford, St Helens, WA11 8LY, UK
www.hoyles.com
sales@hoyles.com
+ 44 (0) 1744 886600
wireless survey
kit to verify the
RF signal is
acceptable, and,
when necessary,
to determine
where to locate
repeaters.
Can restrict RF
signals.
Can absorb and/
or reflect RF
signals.
Can attenuate Add repeaters as
RF signals. The issues arise.
RF environment
can alter as
trees shed or
sprout leaves.
Can disrupt RF Mount Inovonics
signals. devices at a
height sufficient
to achieve line of
sight above
traffic.