American Fibertek RRM-1485-2F8 User Manual
© Copyright 2006, American Fibertek, Inc. 1219JD
With Bi-directional RS485 Data
Instruction Manual
RRM-1485-2F8
Video Receiver
Table of Contents
Functional Description ........................................................................3
Installation...........................................................................................3
Power Source .....................................................................................3
Power Connection...............................................................................3
Fiber Input / Output Connections........................................................4
Video Output Connection....................................................................4
RS485 Four Wire Input / Output Connections.....................................4
RS485 Two Wire Input / Output Connections.....................................5
Data Configuration..............................................................................5
Switch/Jumper Settings.......................................................................6
RRM-1485-2F8 Status LED Indicators................................................7
RS-485 Termination and Offset Bias Requirements...........................7
Warranty and Service Information ......................................................8
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INSTALLATION AND OPERATION INSTRUCTIONS
INTRODUCTION
Thank you for purchasing your American Fibertek RRM-1485-2F8 multimode video receiver with
RS485 transceiver. Please take a few minutes to read these installation instructions in order to
obtain the maximum performance from this product.
FUNCTIONAL DESCRIPTION
The RRM-1485-2F8 operates as half of a transmitter / receiver pair for the transmission of
baseband NTSC, PAL, RS170, or RS343 video signals and bi-directional RS485 data. It is
designed to operate with the MTM-1485-2F8 or RTM-1485-2F8 video transmitter with RS485
transceiver over two multimode fibers.
The RRM-1485-2F8 converts a FM modulated optical fiber input into a single video output and a
single RS485 output using an 850 nm wavelength detector. The RRM-1485-2F8 also converts
an electrical RS485 input signal into an optical RS485 output returning on a separate fiber using
an 850 nm wavelength source. This unit may be configured for two wire half duplex or four wire
full duplex electrical interfaces. The M1485-2F8 Series product is designed to operate over an
optical loss budget range of 0 to 12 dB. The RRM-1485-2F8 operates on 50 um or 62.5 um
multimode fiber. Refer to the data sheets for detailed performance specifications.
This unit is designed for rack mounting in any of the three American Fibertek subracks
available. The subrack model numbers are SR-20/1, SR-20R/1, and SR-20/2. Slide in rack
mounting and LED indicators provide for easy installation and monitoring of video, data, and
power.
The RRM-1485-2F8 is designed for rack mounting only. For a modular stand alone version
please see the MRM-1485-2F8.
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.
The unit slides into any open slot in the SR-20 subrack. Use a small screwdriver to push and
lock the two ¼ turn fasteners into place.
POWER SOURCE
Power to the unit is supplied by the subrack. Please refer to the SR-20 and PSR instructions for
further details.
POWER CONNECTION
Power is supplied to the unit via a four finger backplane connector. The RRM-1485-2F8 can be
inserted into the subrack or removed from the subrack with power applied to the backplane.
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