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INSTALLATION AND OPERATION INSTRUCTIONS
INTRODUCTION
Thank you for purchasing your American Fibertek MR-05B multimode audio receiver. Please take a few
minutes to read these installation instructions in order to obtain the maximum performance from this
product.
FUNCTIONAL DESCRIPTION
The MR-05B operates as half of a transmitter / receiver pair for the transmission of balanced or
unbalanced audio signals over a single multimode fiber optic cable. It is designed to operate with either
the MT-05B or RT-05B audio transmitter.
The MR-05B converts a single FM modulated optical input into a single audio output using an 850 nm
wavelength detector. The 05B Series product is designed to operate over an optical loss budget range
of 0 to 16 dB. The MR-05B operates on 50 um or 62.5 um multimode fiber. Refer to the data sheets for
detailed performance specifications.
This unit is contained in a compact and rugged aluminum housing with internal dc voltage regulation.
The detachable terminal block and LED indicator provide for easy installation and monitoring of audio
and dc power.
The MR-05B is designed for mounting as a modular stand alone unit. For a rack mounted version
please see the RR-05B.
INSTALLATION
THIS INSTALLATION SHOULD BE MADE BY A QUALIFIED SERVICE PERSON AND SHOULD
CONFORM TO THE NATIONAL ELECTRICAL CODE, ANSI/NFPA 70 AND LOCAL CODES.
Mount the unit to a secure surface using #8 (3mm) hardware in four places. See the drawing on the
next page for mounting dimensions. Be sure to allow sufficient room for the required minimum bend
radius of the fiber cable used.
POWER SOURCE
THIS PRODUCT SHALL BE POWERED BY A LISTED CLASS 2 POWER SUPPLY ONLY.
