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Introduction
The Envoy products are fully compatible with all
existing RMS 2020 and RMS 2000 Series products.
Aud
iR
The Envoy Range also includes Aud
iR
, an application
designed to run on Palm OS compatible organisers.
Aud
iR
allows you to display the status of any Envoy
Range device on a single convenient Status screen, and
change any of the settings. In addition, it provides a Plot
Signal function, to plot the signal strength, and a Scan
function, to display a frequency scan:
In effect the Scan function acts like a portable spectrum
analyser dedicated to the receiver being addressed.
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Diversity reception
When electromagnetic waves are radiated by a moving
transmitter, the receiver picks up reflected signals from
surrounding structures as well as the directly radiated
signal. These reflected signals combine with the direct
signal, and in the case where the combining signals are
out of phase with each other, a drop-out or loss of signal
results.
To eliminate this cancellation effect Audio Limited
employ the true diversity technique in the CX
iR
receiver.
The CX
iR
receiver incorporates two separate receivers
fed by separate antennae. A comparator circuit
compares the RF levels from the two receivers ensuring
that the receiver will always switch to the strongest
signal. A noiseless switching circuit takes full
advantage of the accurate level detection to allow
switching as often as needed without noise or clicks.
The result is a reliable, drop-out free, broadcast-quality
audio signal indistinguishable from a line microphone.
Introduction
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