TABLE OF CONTENTS
DIGITAL HYBRID WIRELESS ............................................................................. 2
GENERAL TECHNICAL DESCRIPTION ............................................................ 3
FRONT PANEL CONTROLS AND FUNCTIONS ................................................ 6
LOCKING AND UNLOCKING THE UCR411 .................................................. 6
REAR PANEL FEATURES ................................................................................... 7
MENU SELECTIONS FROM MAIN WINDOW .................................................... 8
FREQUENCY SCAN MODE .............................................................................. 10
ANTENNA USE AND PLACEMENT ................................................................. 11
INSTALLATION AND OPERATING INSTRUCTIONS ....................................... 12
UCR411 REPLACEMENT PARTS AND ACCESSORIES ................................ 12
TROUBLESHOOTING ....................................................................................... 13
SPECIFICATIONS AND FEATURES ................................................................ 14
SERVICE AND REPAIR ..................................................................................... 15
RETURNING UNITS FOR REPAIR ................................................................... 15
WARRANTY ......................................................................................... Back cover
DIGITAL HYBRID WIRELESS
(US Patent Pending)
The Lectrosonics Digital Hybrid Wireless
TM
uses innovative technology to combine
the new advantages of digital audio with the classic advantages of analog RF
transmission, thus delivering the superior sound quality of a digital system and the
excellent range of an analog system. A proprietary algorithm encodes the digital
audio information into an analog format which can be transmitted in a robust
manner over an analog FM wireless link. The receiver employs the latest filters, RF
amplifiers, mixers and detector to capture the encoded signal and a DSP recovers
the original digital audio.
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 a compandor can offer. Because the encoded audio is sent in analog
format, spectral and power efficiency and operating range are not compromised.
Under weak RF conditions, the received signal degrades gracefully, like an analog
system, delivering as much usable audio as possible at maximum range. Because
the audio is not companded, no compandor artifacts are present at any audio or RF
signal level. This greatly reduces the pumping and breathing problems commonly
found in wireless systems with compandors.
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