American Fibertek MRX-986-UTP-H - Manual (Page 3)

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INSTALLATION AND OPERATION INSTRUCTIONS
INTRODUCTION
Thank you for purchasing your American Fibertek Series 986-UTP-H multimode 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 986-UTP-H 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
bi-directional data and one channel of bi-directional contact closure over one multimode 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 and RS485 biasing.
NOTE: This unit is shipped with Data Channel 1 in the RS422 configuration. For other
configurations, please refer to the DATA CONFIGURATION section for changes to the
default switch settings.
NOTE: 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-986-UTP-H 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-986-UTP-H 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 986-UTP-H Series product is designed to operate over an optical
loss budget range of 0dB to 12dB on 62.5um multimode fiber with a maximum transmission
distance of 1 Km. Refer to the product specification sheet for additional performance data.
The 986-UTP-H Series units are designed to be used with Honeywell model HVB8U VideoBlox
chassis interlink modules. Interface connections between the 986-UTP-H Series unit and the
Honeywell module are made via UTP connectors. Output video levels can be increased as
necessary to properly match this unit with the Honeywell module.
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-986-UTP-H and
MRX-986-UTP-H are 1 ¾ inches high by 17 inches wide by 12 inches deep. When mounting
hardware is included, overall width increases to 19 inches wide.