M727xS

10/100Base-TX/FX

'Selectable'

Media Converter

Installation Guide

See Technical Data Sheet

Download Manual PDF

www.versitron.com

Copyright January 2004

VERSITRON, Inc.

83 Albe Drive / Suite C

Newark, DE 19702

www.versitron.com

WARRANTY

All VERSITRON products purchased after January 2001 carry a limited lifetime warranty against defects in material and workmanship. Purchases made prior to January 2001 are warranted for a period of one year from date of delivery. VERSITRON reserves the right to repair or, at our option, replace parts which during normal usage prove to be defective during the warranty period provide that:

1. You call VERSITRON at 302-894-0699 or 800-537-2296 and obtain a Return Maintenance Authorization (RMA)
Number. Please reference your RMA number on the outside of the box in which the item is shipped.

No other warranty is expressed or implied and we are not liable for consequential damages. For repairs outside of the
warranty period, the same procedure must be followed.

The information contained in this document is subject to change without prior notice. Copyright © All Rights Reserved.

TRADEMARKS
Ethernet is a registered trademark of Xerox Corp

This device complies with Class B Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference and (2) this device must accept any interference received including the interference that it may cause

CE NOTICE
Marking by the symbol indicates compliance of this equipment to the EMC directive of the European Community. Such marking is indicative that this equipment meets or exceeds the following technical standards:
EMC Class B
EN 50081-1/1992: EN55022, EN61000-3-2, EN61000-3-3
EN 50082-1/1998: EN61000-4-2, EN61000-4-3, EN61000-4-4, EN61000-4-5, and EN61000-4-6, EN61000-4-8, EN61000-4-11

TABLE OF CONTENTS

SECTION 1: INTRODUCTION

1.1 Key Features

1.2 Specifications

1.3 Optical Specifications

1.4 Special Functions

1.4.1 Auto MDI/MDI-X Function

1.4.2 Auto-negotiation Function

1.4.3 Far End Fault Function

1.4.4 Link Fault Pass-through Function

1.4.5 Remote TP Port Monitoring Function

1.4.6 Loop Back Test Function

SECTION 2: INSTALLING THE SWITCH

2.1 Unpacking

2.2 Mounting the Device

2.3 Applying Power

2.4 Making TP Port Connection

2.5 Making FX Port Connection

2.6 LED Indicators

2.7 Performing Loop Back Test

 

SECTION 3: OPTIONAL CONFIGURATION SETTINGS

3.1User Inaccessible Jumpers

3.1.1 Forwarding Mode Setting JP1

3.1.2 802.3x Function Setting JP2

3.1.3 FX Duplex Setting JP3

3.2 JP1-JP3 Factory Default Settings

SECTION 1

INTRODUCTION

The 10/100BaseTX-FX media converter series provides a media conversion allowing high-speed integration of fiber optic and twisted-pair segments. With 10BaseT and 100BaseTX support, the converters provide seamless translation between Ethernet and Fast Ethernet networks. A complete set of LEDs allows for quick status verification.

1.1 Key Features

The media converters also provide the following key features:

· Convert speed and media type
· Support full wire speed conversion
· Support 10Mbps and 100Mbps speed on TP connections
· Auto MDI/MDI-X detection function on the TP port
· Auto-negotiation function on the TP port
· Link fault pass-through function
· Provide manual configuration settings for TP port to support connection to
  non-auto- negotiation devices
· Transparent to 802.1Q VLAN tagged packets
· Far End Fault function on FX port
· Provide LED status display for remote TP port monitoring
· Provide Loop Back Test function for installation diagnostics
· Support wide range of fiber options on the FX port
· Support media converter center chassis installation
· Support center chassis management
· Provide user-inaccessible settings for specific system applications
· Low power consumption

1.2 Specifications

Twisted-Pair Interface (TP Port)

Fiber Optic Interface (FX Port)

Loop Back Test Button (LOOP TEST)

User Accessible Settings (SW)

Optional Settings (User inaccessible JP1-JP3 on board)

LED Indicators

DC Power Input

DC input Jack	D6.3mm D2.0mm
Operating Input Voltage	+4.75V~+12.6V
Power Consumption	2W max. (0.27A@+7.5V)
Power Supply Options	External AC-DC power adapters
	Rated AC120V/60Hz DC7.5V 1A
	Rated AC230V/50Hz DC7.5V 1A
	Rated AC100V/50-60HZ DC7.5V 1A
	Rated AC100V/50-60HZ DC5V 1A
	Rated AC240V/50Hz DC7.5V 1A

Center Connector

Basic Information

Mechanical

Enviromental

Certificate

1.3 Optical Specifications

The media converter series provides the following fiber options:

Duplex Fiber Series

Single Fiber WDM Series

1.4 Special Functions

1.4.1 Auto MDI/MDI-X Function

This function allows the TP port to auto-detect the twisted-pair signals and adapts itself to form a valid MDI to MDI-X connection with the remote connected device automatically.

1.4.2 Auto-negotiation Function

When the TP port is set on Auto-negotiation mode (SW1:ON), it is featured with auto-negotiation function and full capability. It performs a negotiation process for the speed and duplex configuration with the connected device automatically each time a link is being established.

1.4.3 Far End Fault Function

The FX port is facilitated with this function, which conforms to IEEE 802.3u 100BaseFX specifications. When the FX port detects a link failure on its receiving circuitry, it will send out an FEFI (Far End Fault Indication) signal to the remote connected device to indicate a remote fault is detected. It also is capable of receiving a FEFI signal sent from the remote link partner. Upon receiving an FEFI signal, it indicates a link failure occurred on the transmitting path. This function allows the converter to report a fiber link fault even when a link failure occurred on the transmitting fiber cable.

1.4.4 Link Fault Pass-Through Function

When this function is enabled, a link fault detected on the TP port will force a link down on the FX port. Similarly, a link fault detected on the FX port will also force a link down on the TP port. As illustrated in the following figure, this function allows a TP link fault to pass to the remote link partner and makes the converter act like a TP cable extender.

1.4.5 Remote TP Port Monitoring Function

The converter provides LED indicators labeled RTP LINK/100M/FDX to display the TP port status of its remote link partner on the FX port. As illustrated in the following figure, the remote MC must be enabled for periodical status reports.

1.4.6 Loop Back Test Function

As illustrated in the following figure, the local MC starts a loop back test by pressing the loop back test button. It sends test frames from its FX port to the remote MC. The remote MC forwards the received test frames back to the local MC from its FX port. The local MC verifies the loop back test frames and displays the test result on the RTP LINK/100M/FDX LEDs. This function can help an installer check the full path from a local MC through fiber to a connected remote MC and back to the local MC.

SECTION 2

INSTALLATION

2.1 Unpacking

Check that the following components have been included:
· Installation Guide
· 10/100 Media Converter
· One AC power adapter

2.2 Mounting the Device

Desktop Mounting
The media converter can be mounted on a desktop or shelf. Make sure that there is appropriate heat ventilation around the device. Do not place heavy objects on the device.

Wall Mounting
The media converter can be mounted on a wall. On the bottom of the device a hole is provided for wall mounting.

Installation into a Chassis Center
The media converter can be installed in any one of four chassis. The chassis center provides the power supply to the converter. Up to 16 converters can be installed in one chassis. Unscrew and remove the cover of the center connector before inserting the converter into the chassis. Refer to the operation manual of the chassis for more information.

2.3 Applying Power

Before you begin the installation, check the AC voltage of your area. The AC adapter used to supply the DC power for the unit should have the AC voltage matching the commercial power voltage in your area.

The AC Power Adapter Specifications

Steps to apply the power to the converters are:

1. Connect power adapter DC plug to the DC input jack located on the back of the converter before connecting to the AC outlet.
2. To ensure against accidental disconnection, tie the DC cable with the cable tie located the back of the converter.
3. Connect the power adapter to the AC outlet.
4. Check Power LED indication.

2.4 Making the TP Port Connection

TP port is featured to support connection to:
· Auto-negotiation devices
· Auto-negotiation incapable 10BASE-T devices
· Auto-negotiation incapable 100BASE-TX devices

 

10BaseT:	2-pair UTP Cat. 3, 4, 5, EIA/TIA- 568 100-ohm STP
100BaseTX:	2-pair UTP Cat. 5, EIA/TIA-568 100-ohm STP
Link Distance	Up to 100 meters

 

 

Configuration Setup:

To make a proper connection, the following configuration settings are recommended:

TP port link partner	SW1	SW2	SW3
Auto-negotiation device	Off: auto	Off: full duplex	Off: 100M
Fixed10M half-duplex device	On: forced	On: half-duplex	On: 10M
Fixed 100M half-duplex device	On: forced	On: half-duplex	Off: 100M
Fixed 10M full duplex device	On: forced	Off: full-duplex	On: 10M
Fixed 100M full duplex device	On: forced	Off: full-duplex	Off: 100M

2.5 Making the FX Port Connection

The FX port operates at 100Mbps and full duplex (factory default). A variety of fiber options is provided as follows:

Duplex Fiber Series

Single Fiber WDM Series

Since the WDm single fiber media converters use different wavelengths for transmission and receiving respectively, the link partner device located on the remote end of the single fiber should match the wavelength for the single fiber converter.

2.6 LED Indicators

Link Fault Pass-Through Function is disabled

Link Fault Pass-Through Function is enabled

Remote TP port monitoring

2.7 Preforming Loop Back Test

To perform a loop back test between a local MC and a remote MC connected by a fiber cable, the steps are:

1. Press and hold Loop back test button of the local MC.

2. Check RTP LINK LED. It blinks to indicate the MC is in loop back test mode.

3. Check RTP 100M LED. It is ON to indicate a completion of the loop back test and OFF during test.

4. Check RTP FDX LED for the test result. It is ON to indicate a TEST PASS and OFF for TEST FAIL.

5. Release Loop back test button. RTP LINK/100M/FDX LEDs are back to display remote TP port   status.

SECTION 3

Introduction

The media converter provides additional configuration settings accessible to the user. The settings are located on the circuit board inside the product case. The settings are provided for technical installers to adapt the converter to fit specific application needs.

3.1 User Accessible Jumpers

The setting jumpers are not accessible by users generally. For accessing these jumpers, the upper case must be removed from the circuit board. An authorized and experienced technician must perform removal of the case. The setting jumper block is located on the position shown below:

The setting functions are as follows:

JP1	Forwarding mode setting	Open	-Store-and-forward mode
		Short	-Smart-forward mode
JP2	802.3x function setting	Open	-Enable
		Short	-Disable
JP3	FX port duplex setting	Open	-Full duplex mode
		Short	-Half-duplex mode

 

3.1.1 Forwarding Mode Setting JP1

The following table lists the forward method used in different TP to FX conversions:

 

JP1 Setting	TP port to/from FX port	Forward method
Store-and-forward	10BaseT to 100BaseFX	Store and forward
	100BaseTX to 100BaseFX	Store and forward
Smart-forward	10BaseT to 100BaseFX	Store and forward
	100BaseTX to 100BaseFX	Direct conversion

 

In smart-forward mode, the converter can change to direct conversion automatically when it detects the same speed on both the TP port and the FX port. Direct conversion method converts the signal between the TP port and the FX port without storing the received packet on one port then forwarding to another port. I.E. - The media converter operates with minimal delay.

Note:

• In direct conversion, both devices connected to the TP port and FX port must have the same duplex modem setting for proper transmission.
• In direct conversion, the 802.3x function is disabled and the media converter will not generate pause frame, but forwards the received pause frame directly from one port to another.
• In direct conversion, the media converter is not limited to the maximal length of the receiving packets.

3.1.2 802.3x Function Setting JP2

IEEE 802.3x function is the flow control used for full duplex operation on TP port and FX port under store-and-forward mode. This method uses pause frames for one port to stop further transmission from its link partner.

3.1.3 FX Duplex Setting JP3

This setting is used to set the duplex mode of the FX port.

3.2 Data Channel Phase Shifting

The factory default settings for JP1, JP2 and JP3 are as follows:

JP1	Open	Store-and-forward mode
JP2	Open	802.3x function is enabled
JP3	Open	FX port full duplex

 

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