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INSTALLATION AND OPERATION INSTRUCTIONS
INTRODUCTION
Thank you for purchasing your American Fibertek MR-440 multimode four channel 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 MR-440 operates as half of a transmitter / receiver pair for the transmission of four
simultaneous, real time, baseband NTSC, PAL, RS170, or RS343 video signals over a
single multimode fiber optic cable. It is designed to operate with the MT-440 or RT-440
four channel video transmitter.
The MR-440 receiver converts a single optical input into a maximum of four video
outputs. The 440 Series product is designed to operate over an optical loss budget
range of 0 to 12 dB. The system’s fiber bandwidth should be a minimum of 150 MHz at
1300 nm. For example, if the system fiber has a 600 MHz-km modal bandwidth
specification, the 440 will operate over a distance up to 4 km. The MR-440 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 extruded aluminum housing with internal
dc voltage regulation. The detachable terminal block and LED indicators provide for easy
installation and monitoring of video and power.
The MR-440 is designed for mounting as a modular stand alone unit. For a rack
mounted version please see the RR-440.
INSTALLATION
THE INSTALLATION OF THIS UNIT SHOULD BE MADE BY A QUALIFIED SERVICE
PERSON(S) AND MUST CONFORM TO ALL LOCAL CODES.
Mount the unit to a secure surface using #8 (3mm) hardware in four places. Mounting
dimensions can be found on the connection diagram included with this manual. Be sure
to allow sufficient room for the required minimum bend radius of the fiber cable used.
POWER SOURCE
Power to the unit must be within the specifications listed. A 24VAC center tap
transformer rated at 10VA is required. In the USA and in Canada an American Fibertek
PS-24CT-T is supplied with this unit.
POWER CONNECTION
Power is supplied to the unit via a three pin Phoenix connector. The ground wire from
the center tap supply must be connected to the center pin of the Phoenix connector.
When installed properly, the voltage measured from the center pin to either of the
outside pins will be 12 volts AC and voltage measured from one outside pin to the other
outside pin will be 24 volts AC.
INPUT / OUTPUT CONNECTIONS
The fiber optic connection is made via a ST connector located on the left side of the unit.
