American Fibertek RR-944C User Manual

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INSTALLATION AND OPERATION INSTRUCTIONS

INTRODUCTION

Thank you for purchasing your American Fibertek Series 944C multimode four 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 RR-944C operates as half of a transmitter / receiver pair for the digital transmission of four
simultaneous NTSC or PAL video signals along with one channel of field configurable bi-directional
data.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.

NOTE: This unit is shipped with Data Channel in the RS485 4-wire 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 other
configurations, please refer to the DATA TERMINATION / BIAS section for changes to the
default switch settings.

The RR-944C receives a high speed data stream modulated onto a 1310 nm optical wavelength and
then de-multiplexes this signal into four video input signals along with one multi-protocol data signal.
The RR-944C also transmits a return multi-protocol data channel onto a 1550 nm optical wavelength.

This unit is contained in a rugged aluminum housing with internal dc voltage regulation. The detachable
terminal blocks and LED indicators provide for easy installation and monitoring of video, data, and
optical power.

The RR-944C is designed for rack mounting only. For a modular stand alone version please see the
MR-944C.
.

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-2 instructions for
further details.

POWER CONNECTION

Power is supplied to the unit via a four finger backplane connector. The RR-944 can be inserted into
the subrack or removed from the subrack with power applied to the backplane.