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INSTALLATION AND OPERATION INSTRUCTIONS
INTRODUCTION
Thank you for purchasing your American Fibertek MRM-61 multimode video receiver. Please take a
few minutes to read these installation instructions in order to obtain the maximum performance from
this product.
FUNCTIONAL DESCRIPTION
The MRM-61 operates as half of a transmitter / receiver pair for the transmission of baseband NTSC,
PAL, RS170, or RS343 video signals and bi-directional Sensornet data. It is designed to operate with
the MTM-61 or RTM-61 video transmitter over a single multimode fiber optic cable.
The MRM-61 converts an optical fiber input into a single video output and a single Sensornet output
using a 1300 nm wavelength detector. The MRM-61 also converts an electrical Sensornet input signal
into an optical Sensornet output returning on the same fiber using an 850 nm wavelength source. The
M61 Series product is designed to operate over an optical loss budget range of 0 to 12 dB. The MRM-
61 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 indicators provide for easy installation and monitoring of video,
data, and dc power.
The MRM-61 is designed for mounting as a modular stand alone unit. For a rack mounted version
please see the RRM-61.
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.
This unit requires a +12VDC power source for proper operation. The DC input is diode protected. In
the USA and in Canada an American Fibertek PS-12 is supplied with this unit. The negative side of the
power input is directly connected to ground. ANSI/NFPA 70 Class 2 wiring is recommended.
POWER CONNECTION
Power is supplied to the unit via a two pin terminal connector. Follow label on unit for proper orientation
of +12 volt dc and ground.
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