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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. 

Summary of Contents for UCR411

Page 1: ...UCR411 UHF RECEIVER OPERATING INSTRUCTIONS and trouble shooting guide LECTROSONICS INC Rio Rancho NM www lectrosonics com...

Page 2: ...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...

Page 3: ...n order to handle stronger RF signals without output overload The first mixer is of new GaAs technology that has a very high third order intercept point This produces a robust front end that is as sel...

Page 4: ...Noise Reduction algorithm which removes hiss without sacrificing high frequency response The Smart Noise Reduction algorithm works by attenuat ing only those portions of the audio signal that fit a s...

Page 5: ...n also has protection circuits that prevent damage to the receiver if a positive ground power source is applied LCD DISPLAY The display has four main windows Pressing the MENU button rotates through e...

Page 6: ...Levels in dB are engraved into the bezel above the LCD display Battery Levels The icon above the Rx symbol indicates the receiver battery condition and will flash when approximately one hour of opera...

Page 7: ...the strip up Place the cable in the strip and secure Lift and open the bottom battery door cover with your thumb rotate the door until it is perpendicular with the case and allow the batteries to fal...

Page 8: ...UP SETUP SmtNR Press UP Press MENU SmtNR NORMAL Press UP DOWN to select Press MENU P ress UP Noise Reduction FREQUENCY WINDOW TV channel which television broad cast channel this frequency falls TV40 A...

Page 9: ...output levels only To exit the test tone screen and stop the tone press the MENU button TONE 00 dBu LVL 1K 04 dBu The TXBAT setup screen allows you to select the exact battery being used in the transm...

Page 10: ...ill show an expanded portion of the spectrum around the cursor In the FINE VIEW window each vertical band represents one frequency the UCR411 is capable of tuning The upper right corner shows the tran...

Page 11: ...al If the direct and reflected signals are out of phase with each other a cancellation may occur The result would be a dropout A dropout sounds like either audible noise hiss or in severe cases may re...

Page 12: ...e transmit ter To explain it another way it is used to match the transmitter to the type of microphone and the sound levels that will be present at that microphone We encourage users to either disconn...

Page 13: ...NNAS AND RF SIGNAL STRENGTH RF Level is weak Receiver may need to be moved or reoriented Antenna on transmitter may be defective or poorly connected double check antenna on transmitter Improper length...

Page 14: ...LCD control panel menus include Main window Pilot tone antenna phase receiver battery level transmitter battery level audio level RF level Frequency window Frequency TV channel Transmitter switch set...

Page 15: ...for an exact quotation We will be happy to quote approximate charges by phone for out of warranty repairs RETURNING UNITS FOR REPAIR You will save yourself time and trouble if you will follow the ste...

Page 16: ...c or an authorized dealer shipping costs prepaid within one year from the date of purchase This Limited Warranty is governed by the laws of the State of New Mexico It states the entire liablility of L...

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