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INSTALLATION AND OPERATION INSTRUCTIONS
INTRODUCTION
Thank you for purchasing your American Fibertek MTM-61 multimode video transmitter. Please take a
few minutes to read these installation instructions in order to obtain the maximum performance from
this product.
FUNCTIONAL DESCRIPTION
The MTM-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 MRM-61 or RRM-61 video transmitter over a single multimode fiber optic cable.
The MTM-61 converts a single video input and a single Sensornet input into an optical output using a
1300 nm wavelength source. The MTM-61 also converts an optical input signal returning on the same
fiber into a Sensornet output signal using an 850 nm wavelength detector. The M61 Series product is
designed to operate over an optical loss budget range of 0 to 12 dB. The MTM-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 MTM-61 is designed for mounting as a modular stand alone unit. For a rack mounted version
please see the RTM-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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