American Fibertek MTX-480 User Manual

Bi-directional Multi-Protocol Data

Instruction Manual

MTX-480

Table of Contents

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

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

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

Power Connection .................................................................................................4

Fiber Connection ...................................................................................................4

Data Input / Output Connections ...........................................................................5

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

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

Data Bias / Termination Switches..........................................................................6

RS485 Data Termination.......................................................................................6

Offset Bias - RS485 Data ......................................................................................6

MTX-480 Status LED Indicators............................................................................7

Warranty / Service Information..............................................................................8

INSTALLATION AND OPERATION INSTRUCTIONS

INTRODUCTION

Thank you for purchasing your American Fibertek MTX-480 multimode bi-directional multi-protocol data transmitter. Please take a few minutes to read these installation instructions in order to obtain the maximum performance from this product.

FUNCTIONAL DESCRIPTION

The MTX-480 operates as half of a transmitter / receiver pair for the transmission of one bi-directional data channel. This data channel can be configured for any one of the following protocols: RS485 (2 or 4 wire) data, RS422 data, RS232 data, or Manchester / Bosch data.

NOTE: This unit is shipped with the 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.

The MTX-480 is designed to operate with the MRX-480 or RRX-480 receiver with bi-directional data over one multimode fiber optic cable.

The MTX-480 converts a single data signal into a high speed serial data stream. This serial data stream modulates a laser at 1310 nm wavelength. The MTX-480 also detects a return optical serial data stream signal containing one data channel at 1550 nm wavelength. The 480 Series product is designed to operate over an optical loss budget range of 0 to 18 dB on 62.5 um multimode fiber. The MTX-480 will also operate on 50 um multimode fiber at a reduced loss budget range. Refer to the product specification sheet for additional performance 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.

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 data and optical power.

The MTX-480 is designed for mounting as a modular stand alone unit. For a rack mounted version please see the RTX-480.

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.

Mount the unit to a secure surface using #8 (3mm) hardware in four places. See the drawing on the next page for mounting dimensions. Be sure to allow sufficient room for the required minimum bend radius of the fiber cable used.

POWER SOURCE

THIS PRODUCT SHALL BE POWERED BY A LISTED CLASS 2 POWER SUPPLY ONLY. This unit requires a +12VDC power source with a current rating of 500 milliamps for proper operation.

The DC input is diode protected. In the USA and in Canada an American Fibertek PS-12 is supplied with this unit. The negative side of the power input is directly connected to ground. ANSI/NFPA 70 Class 2 wiring is recommended.

+ 5 hidden pages