American Fibertek MRX-8689C - Manual (Page 3)

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INSTALLATION AND OPERATION INSTRUCTIONS
INTRODUCTION
Thank you for purchasing your American Fibertek 8689C Series multimode six channel video
multiplexer with bi-directional data. Please take a few minutes to read these installation
instructions in order to obtain the maximum performance from this product.
FUNCTIONAL DESCRIPTION
The 8689C Series units operate as a transmitter / receiver pair for the transmission of six
simultaneous, real time baseband NTSC/PAL video signals with field configurable bi-directional
data over one multimode fiber optic cable.
This link can accommodate either a single RS485 interface (2 or 4 wire) or both an RS422
interface and a contact closure interface. When used in RS422 /Contact Closure mode, each
interface functions independent of the other. These units are factory shipped configured in
the RS422 / Contact Closure configuration.
The MTX-8689C transmitter accepts up to six video inputs and multiplexes these signals along
with the data signals onto a single optical output port for connection to the fiber transmission
system. Correspondingly, the MRX-8689C receiver converts the optical signal to six
independent video output signals along with the data signals.
The 8689C Series units operate on 50 um or 62.5 um multimode fiber. Refer to the data sheets
for detailed performance specifications.
The individual units may be configured for rack mounting or wall mounting depending upon the
position of the included mounting hardware.
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.
To install the MTX-8689C or MRX-8689C it is first necessary to mount the rack flanges to the
unit.
For rack mounting the ears are installed on the
sides of the unit with the surfaces that have
oval holes flush with the front of the unit as in
Figure 1. Mount the ears with the #10 flathead
screws provided. To mount in the rack cabinet,
use mounting screws that are appropriate for
the rack cabinet being used.