American Fibertek MTX-986C-SL User Manual
03/01/13 JPK
Instruction Manual
MTX-986C-SL
MRX-986C-SL
Eight Channel Video Multiplexer
With One Bi-directional Multi-Protocol
Data Channel and One Bi-directional
Contact Channel
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...........................................................................6
Data Termination Requirements.........................................................8
Offset Bias - RS485 Data Signals.......................................................8
MTX-986C-SL Status LED Indicators .................................................9
MRX-986C-SL Status LED Indicators...............................................10
Warranty / Service Information .........................................................12
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INSTALLATION AND OPERATION INSTRUCTIONS
INTRODUCTION
Thank you for purchasing your American Fibertek Series 986C-SL singlemode eight channel
video multiplexer with bi-directional multi-protocol data and contact closure. Please take a few
minutes to read these installation instructions in order to obtain the maximum performance from
this product.
FUNCTIONAL DESCRIPTION
The 986C-SL Series units operate as a transmitter / receiver pair for the digital transmission of
eight simultaneous NTSC or PAL video signals along with one channel of field configurable bidirectional data and one channel of bi-directional contact closure over one singlemode fiber
optic cable. The data channel 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) with or without biasing. Switch selectable internal 120 ohm terminations are available for
RS422 or RS485 data.
NOTE:
This unit is shipped with Data Channel 1 in the RS485 4-wire configuration. For other
configurations, please refer to the DATA CONFIGURATION section for changes to the
default switch settings.
This unit is shipped with data terminations off and data bias off for Data Channel 1. For
other configurations, please refer to the DATA TERMINATION / BIAS section for changes
to the default switch settings.
The MTX-986C-SL transmitter accepts up to eight video inputs and multiplexes these inputs into
a high speed serial data stream. This serial data stream, along with the forward data and
contact closure channels, modulates a laser at 1310nm wavelength. A Wave Division
Multiplexer combines this wavelength, along with the return data wavelength of 1550nm, onto a
single optical output port for connection to the fiber transmission system. Correspondingly, the
MRX-986C-SL receiver converts the optical signal to eight independent video output signals
with the forward data and contact closure channels while transmitting the return data and
contact closure channels. The 986C-SL Series product is designed to operate over an optical
loss budget range of 0dB to 15dB on 9um singlemode fiber. Refer to the product specification
sheet for additional performance data.
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-986C-SL and
MRX-986C-SL 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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