Versitron M727xS User manual

A010430357
M727xS
10/100BaseTX-FX
‘Selectable’
Media Converter
InstallationGuide
Copyright January 2004
VERSITRON, Inc.
83 Albe Drive / Suite C
Newark, DE 19702
www.versitron.com

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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
receivedincludingtheinterferencethatitmaycause.
CE NOTICE
Marking by the symbol indicates compliance of this equipment to the EMC directive of the European
Community.Such marking isindicative that thisequipment meets orexceeds the followingtechnical standards:
EMC Class B
EN50081-1/1992: EN55022,EN61000-3-2,EN61000-3-3
EN50082-1/1998: EN61000-4-2,EN61000-4-3, EN61000-4-4,EN61000-4-5, and EN61000-4-6,
EN61000-4-8,EN61000-4-11

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Table of Contents
1. Introduction................................................................ 4
1.1 Key Features.............................................................................................4
1.2 Specifications............................................................................................5
1.3 OpticalSpecifications................................................................................9
1.4 SpecialFunctions....................................................................................10
1.4.1 AutoMDI/MDI-XFunction ....................................................................10
1.4.2 Auto-negotiationFunction.......................................................................10
1.4.3 Far End Fault Function............................................................................10
1.4.4 LinkFaultPass-through Function.............................................................11
1.4.5 Remote TP Port Monitoring Function.......................................................12
1.4.6 LoopBackTest Function.........................................................................12
2. Installing the Switch....................................................13
2.1 Unpacking..............................................................................................13
2.2 MountingtheDevice ...............................................................................13
2.3 ApplyingPower......................................................................................14
2.4 Making TP Port Connection ....................................................................15
2.5 MakingFX PortConnection ....................................................................16
2.6 LEDIndicators........................................................................................17
2.7 Performing Loop Back Test.....................................................................18
3. Optional Configuration Settings...................................19
3.1 UserInaccessibleJumpers .......................................................................20
3.1.1 ForwardingModeSetting JP1..................................................................20
3.1.2 802.3x Function Setting JP2.....................................................................21
3.1.3 FXDuplexSetting JP3............................................................................21
3.2 JP1-JP3FactoryDefault Settings..............................................................21

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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
forquick 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
•Provideuser-inaccessible settings for specific system applications
•Low power consumption

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1.2 Specifications
Twisted-Pair Interface (TP Port)
Connector Shielded RJ-45
Pin Assignments AutoMDI/MDI-Xdetection
Signal Compliance 802.3 10Base-T, 802.3u 100BaseTX
Data Speed 10Mbps or 100Mbps
Duplex Mode Half-duplex or Full duplex
Configuration Auto-negotiationcapableandoptional
forced manual settings
Cable Types 10Mbps -- Category 3, 4, or 5 UTP
100Mbps – Category 5 UTP
Supported Link Distance Up to 100 meters

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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, 62.5/125µm
Single mode (SMF) - 9/125µm
Supported Link Distance MMF up to 2km
SMF up to 90km
Single SMF WDM up to 20km
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

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LED Indicators
LED DISPLAY STATE INTERPRETATION
PWR Powerstatus ON Poweron
OFFPoweroff
TP LINK TP port link status ON Link up and no traffic
OFF Link fault
Blink Rx/Tx activities
TP 100M TPport speed status ON 100Mbps
OFF 10Mbps
TP FDX TP port duplex status ON Full duplex
OFF Half-duplex
Blink Collisionsonhalf-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 Opticalsignal is detected
OFF No optical signal
RTP LINK Remote TP port link ON Link up and no traffic
OFF Link fault
RTP 100M RemoteTP port speed ON 100Mbps
OFF 10Mbps
RTP FDX RemoteTP 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 ExternalAC-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

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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
Packet Types Transparent and no modification for
- IEEE 802.3 standard packets
- IEEE 802.1Q VLAN tagged packets
Packet Length Up to 1522 bytes at store-and-forward mode
No limit at smart-forward mode 100to100
Flow Control 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)
Environmental
OperatingTemperature -5ºC ~ 40ºC
Storage Temperature -20ºC ~ 85ºC
Relative Humidity 5% ~ 90%
Certificate
FCC Part 15 Class B
CE/EMC EMI EN50081-1 Class B, EMS EN55024
CE/LVD EN 60950

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1.3 Optical Specifications
The media converter series provides the following fiber options:
Duplex Fiber Series
Model Connector Fiber Wavelength TxPower Sensitivity Distance
M7273S STDuplex 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 TxPower Sensitivity Distance
M7275S-2SFA SC Single FiberSM TX 1310nm -14~ - 8dBm -33dBm 20 Km
RX 1550nm
M7275S-2SFB SC Single Fiber SM TX 1550nm -14~ - 8dBm -33dBm 20 Km
RX 1310nm

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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.

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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.

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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.

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2. Installation
2.1 Unpacking
Check that the following components have been included:
•Installation Guide
•10/100 Media Converter
•OneAC power adapter
If any item is found missing or damaged, please contact your local reseller for
replacement.
2.2 Mounting the Device
Desktop Mounting
The media converter can be mounted on a desktop or shelf. Make sure that
there is proper heat dissipation from and adequate 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.

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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 -
RatedAC120V/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
tielocated the back of the converter.
3. Connect the power adapter to the AC outlet.
4. Check Power LED indication.

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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
Network Cables
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-negotiationdevice Off: auto Off: full duplex Off: 100M
Fixed 10M 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

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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 TxPower Sensitivity Distance
M7273S STDuplex 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 TxPower Sensitivity Distance
M7275S-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
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.

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2.6 LED Indicators
Link Fault Pass-Through Function is disabled
LED Display Status Interpretation
PWR Powerstatus On Poweron
Off Poweroff
TP LINK TP port link status On Link up and no traffic
Off Link fault
Blink Rx/Tx activities
TP 100M TPportspeed status On 100Mbps
Off 10Mbps
TP FDX TP port duplex status On Fullduplex
Off Half-duplex
Blink Collisionsonhalf-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 OnOptical 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 Fullduplex
Off Half-duplex

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2.7 Performing 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.
Summary of Loop Back Test LEDs
LED Status Interpretation
RTP LINK Blink The MC is in Loop Back Test mode
RTP 100M On Loopbacktestcomplete
Off Loop back test in operation
RTP FDX On Loopbacktest OK
Off Loop back test fail

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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

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3.1.1 Forwarding Mode Setting JP1
The following table lists the forward method used in different TP to FX
conversions:
JP1Setting 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 Directconversion
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. The media converter operates with the minimum delay.
Note:
1. In direct conversion, both devices connected to the TP port and FX port
must have the same duplex modem setting for proper transmission.
2. In direct conversion, the 802.3x function is disabled and the media
converter will not generate pause frame, but forwards the received pause
framedirectly from one portto another.
3. In direct conversion, the media converter is not limited to the maximal
length of the receiving packets.