American Fibertek MTX-91685C, MRX-91685C User Manual
2012_04JPK
Instruction Manual
MTX-91685C
MRX-91685C
Sixteen Channel Video Multiplexer
With Two Bi-directional Data Channels
Table of Contents
Functional Description ........................................................................3
Installation...........................................................................................3
Power Source .....................................................................................4
Fiber Connection .................................................................................4
Video Input / Output Connections.......................................................4
Data Input / Output Connections ........................................................5
Data Mode Switches...........................................................................5
Data Termination Requirements.........................................................6
MTX-91685 Status LED Indicators......................................................7
MRX-91685 Status LED Indicators.....................................................8
Warranty / Service Information .........................................................10
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INSTALLATION AND OPERATION INSTRUCTIONS
INTRODUCTION
Thank you for purchasing your American Fibertek Series 91685C multimode sixteen channel
video multiplexer with bi-directional multi-protocol data. Please take a few minutes to read these
installation instructions in order to obtain the maximum performance from this product.
FUNCTIONAL DESCRIPTION
The 91685C Series units operate as a transmitter / receiver pair for the digital transmission of
sixteen simultaneous NTSC or PAL video signals along with two channels of field configurable
bi-directional data over one multimode fiber optic cable. These data channels may be
configured as RS485 data, RS422 data, RS232 data, or Manchester data. The RS485 channel
may be configured for 2-wire (half duplex) or 4-wire (full duplex).
NOTE: This unit is shipped with Data Channel 1 and Data Channel 2 in the RS485 4-wire
configuration. For other configurations, please refer to the DATA CONFIGURATION
section for changes to the default switch settings.
The MTX-91685 transmitter accepts up to sixteen video inputs in two groups of eight videos and
multiplexes each group into a high speed serial data stream. The first group’s serial data
stream, along with the two forward data channels, modulates a laser at 1310nm wavelength.
The second group’s serial data stream modulates a laser at 1550nm. A Wave Division
Multiplexer (WDM) combines these two wavelengths, along with the return data wavelength of
850nm, onto a single optical output port for connection to the fiber transmission system.
Correspondingly, the MRX-91685 receiver converts the optical signal to sixteen independent
video output signals and two forward data signals while transmitting the two return data
channels.
The individual units may be configured for rack mounting or wall mounting depending upon the
position of the included mounting hardware. Nominal dimensions of the MTX-91685C and MRX91685C are 1 ¾ inches high by 17 inches wide by 11 ½ inches deep. When mounting hardware
is included, overall width increases to 19 inches wide.
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.
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