Lectrosonics SRa Series - Manual (Page 4)

SRa5P and SRa Dual Receivers
LECTROSONICS, INC. 4
Digital Hybrid Wireless ®
The Lectrosonics Digital Hybrid Wireless ® uses innova-
tive technology to combine the advantages of digital
audio with the advantages of analog RF transmission.
The result delivers the superior sound quality of a digital
system and the excellent range of an analog system.
A proprietary algorithm encodes the digital audio infor-
mation into an analog format which can be transmitted
in a robust manner over an analog FM wireless link. The
receiver employs state-of-the-art filters, RF amplifiers,
mixers and detector to capture the encoded signal and
a DSP recovers the original digital audio.
SRa
In response to demand for external antenna connections
and the OCTOPACK multicoupler, this is the current ver-
sion of the basic receiver with detachable whip antennas
and the audio output on the rear panel only.
SRa5P
The current version of the full-featured receiver. De-
tachable whip antennas and second audio output on
left hand side of the front panel. Will also work with the
OCTOPACK multicoupler.
Model Differences
In this manual you will see both the SRa5P and SRa pictured in various contexts. There is no functional difference
between the two models other than the second output jack on the 5P version, so either receiver may be used as either
is pictured.
This digital/analog hybrid technique has some very
beneficial properties. Because the information being
transmitted is digitally encoded, immunity to noise is
much higher than what a compandor can offer. Because
the encoded audio is sent in analog format, spectral
and power efficiency and operating range are not com-
promised.
Under weak RF conditions, the received signal de-
grades gracefully, like an analog system, delivering
as much usable audio as possible at maximum range.
Since the audio is free of compandor artifacts, pumping
and breathing problems are also greatly reduced.