American Fibertek RR-746C-SL User Manual

1/30/2013 JPK

Instruction Manual

RR-746C-SL

Four Channel Video Receiver

With One Bi-Directional Multi-Protocol

Data Channel And One Bi-Directional

Contact Closure Channel

Table of Contents

Functional Description................................................................................. 3

Installation ................................................................................................... 3

Power Source.............................................................................................. 3

Power Connection ....................................................................................... 3

Fiber Connection ......................................................................................... 3

Video Output Connections........................................................................... 4

Data Input / Output Connections ................................................................. 4

Typical System Data Connections............................................................... 5

Data Configuration....................................................................................... 5

RS422 Data Signals .................................................................................... 6

RS485 Data Signals .................................................................................... 6

Offset Bias - RS485.....................................................................................7

RR-746C-SL Status LED Indicators ............................................................ 7

Warranty and Service Information............................................................... 8

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INSTALLATION AND OPERATION INSTRUCTIONS

INTRODUCTION

Thank you for purchasing your American Fibertek Series 746C-SL singlemode four channel video
multiplexer with one bi-directional multi-protocol data channel and one bi-directional contact channel.
Please take a few minutes to read these installation instructions in order to obtain the maximum
performance from this product.

FUNCTIONAL DESCRIPTION

The RR-746C-SL 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 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 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-746C-SL 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-746C-SL 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-746C-SL is designed for rack mounting only. For a modular stand alone version please see the
MR-746C-SL.
.

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-746C-SL can be inserted
into the subrack or removed from the subrack with power applied to the backplane.

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