Versitron Fiber Optic Modem Manuals Resource


 

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.

2. Shipping charges are pre-paid.

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)

 

Connector Shielded RJ-45
Pin Assignments Auto MDI/MDI-X detection
Signal Compliance 802.3 10Base-T, 802.3u 100BaseTX
Data Speed 10Mbps or 100Mbps
Duplex Mode Half-duplex or Full duplex
Configuration Auto-negotiation capable and optional forced manual settings
Cable Types 10Mbps -- Category 3, 4, or 5 UTP
100Mbps – Category 5 UTP
Supported Link Distance Up to 100 meters

 

 

Fiber Optic Interface (FX Port)

 

Signal Compliance 802.3u 100BaseFX
Connector SC, ST, or Single SC
Data Speed 100Mbps
Duplex Mode Full duplex and optional half-duplex
Cable Types Multimode (MMF) - 50/125, 62.5/125m
  Single mode (SMF) - 9/125m
Supported Link Distance MMF up to 2 km
SMF up to 90 km
  Single SMF WDM up to 40 km
Eye Safety compliance IEC825 Class 1

 

 

Loop Back Test Button (LOOP TEST)

 

PUSH Start loop back test
RELEASE Stop loop back test

 

 

User Accessible Settings (SW)

 

 

NO.

SETTING

STATE

FUNCTION

SW1 TP Port Configuration OFF Auto-negotiation (default)
  ON Forced mode
SW2 TP Port Duplex OFF Full duplex (default)
    ON Half-duplex
SW3 TP Port Speed OFF 100Mbps (default)
    ON 10Mbps
SW4 Link Fault Pass-through OFF Disable (default)
    ON Enable
SW5 Reserved    

 

 

 

 

Optional Settings (User inaccessible JP1-JP3 on board)

 

 

NO.

SETTING

STATE

FUNCTION

JP1 Forwarding mode Open Store-and-forward (default)
  Short Smart-forward mode
JP2 802.3x function Open Enable (default)
    Short Disable
JP3 FX Port Duplex Open Full duplex mode(default)
    Short Half-duplex mode

 

 

 

LED Indicators

 

 

LED

DISPLAY

STATE

INTERPRETATION

PWR Power status ON Power on
  OFF Power off
TP LINK TP port link status ON Link up and no traffic
    OFF Link fault
    BLINK Rx/Tx activities
TP 100M TP port speed status ON 100Mbps
    OFF 10Mbps
TP FDX TP port duplex status ON Full duplex
    OFF Half duplex
    BLINK

Collisions on half-duplex

FX LINK FX port link status ON Link up and no traffic
  OFF Link fault
    BLINK Rx/Tx activities
FX OL FX port optical link ON Optical signal is detected
    OFF No optical signal
RTP LINK Remote TP port link ON Link up and no traffic
  OFF Link fault
RTP 100M Remote TP port speed ON 100Mbps
    OFF 10Mbps
RTP FDX Remote TP port duplex ON Full-duplex
    OFF Half-duplex
RTP LINK/100M/FDX LEDs are also used for loop back test report.

 

 

 

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

 

 

Connector Futurebus 6x4
Function Center chassis installation
Signal Power inputs
Ground
Management interfaces

 

 

 

Basic Information

 

 

Forwarding Throughput Full wire speed at 100M full duplex
10Mbps - 14,880pps at 64-byte packets
100Mbps - 14,880pps at 64-byte packets
Transparent and no modification for
-IEEE 802.3 standard packets
-IEEE 802.1Q VLAN tagged packets
Up to 1522 bytes at store-and-forward mode
No limit at smart-forward mode 100 to 100
Back-pressure for half-duplex mode
802.3x pause-frame base for full duplex mode

 

 

 

 

Mechanical

 

 

Dimension 0.91H x 2.86W x 4.25D in. (23x72.5x108mm)
Housing Enclosed metal with no fan
Mounting Desktop, Wall mount, Center chassis
Weight 0.47 lbs. (212g)

 

 

 

Enviromental

 

 

Operating Temperature -5C ~ 40C
Storage Temperature -20C ~ 85C
Relative Humidity 5% ~ 90%

 

 

 

 

Certificate

 

 

FCC Part 15 Class B
CE/EMC EMI EN50081-1 Class B, EMS EN55024
CE/LVD EN 60950


1.3 Optical Specifications

The media converter series provides the following fiber options:

 

Duplex Fiber Series

 

 

Model

Connector

Fiber

Wavelength

Tx Power

Sensitivity

Distance

M7273S ST Duplex MM 1310nm -19~-14dBm -33dBm 2 Km
M7274S SC Duplex MM 1310nm -19~-14dBm -33dBm 2 Km
M7275S-2 SC Duplex SM 1310nm -15~-8dBm -30dBm 20 Km
M7275S-5 SC Duplex SM 1310nm -5~ 0dBm -35dBm 50 Km
M7275S-9 SC Duplex SM 1310nm 0~ +5dBm -37dBm 90 Km

 

Single Fiber WDM Series

 

 

Model

Connector

Fiber

Wavelength

Tx Power

Sensitivity

Distance

M7273S-2SFA SC Single Fiber SM TX 1310nm -14~ -8dBm -33dBm 20 Km
      RX 1550nm      
M7275S-2SFB SC Single Fiber SM TX 1550nm -14~ -8dBm -33dBm 20 Km
      RX 1310nm      
M7275S-4SFA SC Single Fiber SM TX 1310nm -8~ -3dBm -33dBm 40 Km
      RX 1550nm      
M7275S-4SFB SC Single Fiber SM TX 1550nm -8~ -3dBm -31dBm 40 Km
      RX 1310nm      

 

 

 

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

AC input power: AC power voltage of your area options -
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

 

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

 

Model Connector Fiber Wavelength Tx Power Sensitivity Distance
M7273S ST Duplex MM 1310nm -19~-14dBm -33dBm 2 Km
M7274S SC Duplex MM 1310nm -19~-14dBm -33Bm 2 Km
M7275S-2 SC Duplex SM 1310nm -15~ -8dBm -30dBm 20 Km
M7275S-5 SC Duplex SM 1310nm -5~ 0dBm -35dBm 50 Km
M7275S-9 SC Duplex SM 1310nm 0~+5dBm -37dBm 90Km

 

Single Fiber WDM Series

 

Model Connector Fiber Wavelength Tx Power Sensitivity Distance
M7273S-2SFA SC Single Fiber MM TX 1310nm -14~ -8dBm -33dBm 20 Km
      RX 1550nm      
M7274S-2SFB SC Single Fiber MM TX 1550nm -14~ -8dBm -33Bm 20 Km
      RX 1310nm      
M7275S-4SFA SC Single Fiber SM TX 1310nm -8~ -3dBm -33dBm 40 Km
      RX 1550nm      
M7275S-4SFb SC Single Fiber SM TX 1550nm -8~-3dBm -31dBm 40 Km
      RX 1310nm      

 

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

 

LED

DISPLAY

STATE

INTERPRETATION

PWR Power status ON Power on
  OFF Power off
TP LINK TP port link status ON Link up and no traffic
    OFF Link fault
    BLINK Rx/Tx activities
TP 100M TP port speed status ON 100Mbps
    OFF 10Mbps
TP FDX TP port duplex status ON Full duplex
    OFF Half duplex
    BLINK

Collisions on half-duplex

FX LINK FX port link status ON Link up and no traffic
  OFF Link fault
    BLINK Rx/Tx activities
FX OL FX port optical link ON Optical signal is detected
    OFF No optical signal is detected

 

Link Fault Pass-Through Function is enabled

 

TP LINK FX LINK FX OL Interpretation
On On On Both TP and FX ports link up
Off Off On (1) TP port link fault or
(2) FX port received FEFI single
(FX port Tx path failed.)
Off Off Off (1) TP port link fault or
(2) FX port Rx link failure detected

 

 

Remote TP port monitoring

 

LED Display Status Interpretation
RTP LINK Remote TP port link On Link up and no traffic
Off Link fault
RTP 100M Remote TP port speed On 100Mbps
Off 10Mbps
RTP FDX Remote TP port duplex On Full duplex
Off Half-duplex

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.


LED Status Interpretation
RTP LINK Blink The MC is in Loop Back Test mode
RTP 100M On Loop back test complete
Off Loop back test in operation
RTP FDX On Loop back test OK
Off Loop back test fail

 


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:


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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