D-Link DMC-920 Manuale utente

DMC-920

10/100BASE-TX to

100BASE-FX

Single-Fiber

Dual-Wavelength

Media Converter Kit

User’s Guide

Rev. 02 (DEC. 2004)

Printed In Taiwan

RECYCLABLE

TABLE OF CONTENTS

TABLE OF CONTENTS..........2

INTRODUCTION.................2

DUAL-WAVELENGTH SINGLE-FIBER............3

PRODUCT FEATURES ......3

INSTALLATION..................4

SELECTING A SITE FOR THE EQUIPMENT.....4

CONNECTING TO POWER.............................4

SLIDING SWITCH ..........................................4

INSTALLING IN A CHASSIS ............................5

LED INDICATOR ...........................................6

LINK PASS THROUGH FUNCTION.................8

DUAL WAVELENGTH SINGLE FIBER...........10

SPECIFICATIONS............12

INTRODUCTION

Thank you for choosing the 10/100BASE Fast Ethernet

Media Converter, the Dual Wavelength Single Fiber

Converter introduced here provides a pair of one channel

single fiber media conversion between 10/100BASE-TX and

100BASE-FX Single Fiber.

Dual-Wavelength Single-Fiber

These types of Single-Fiber modules combine transmit and

receive signals onto one fiber strand using two wavelengths.

This design avoids the budget losses incurred by the

single-wavelength single-fiber technology, and minimizes

any possibility of reflections in the system. The units on both

ends of a link are different. One module uses one wavelength

to transmit and a second wavelength to receive, while the

other module flips that relationship. For this reason these

units are sold in pairs.

PRODUCT FEATURES

yA pair of One-channel single fiber media conversion

between 10/100BASE-TX and 100BASE-FX.

yTwo different type of transmitting wavelength: One

wavelength with bi-directional for both transmit and

receive.

−DMC-920R: TX: 1310µm; RX: 1550µm.

−DMC-920T: TX: 1550µm; RX: 1310µm

yAuto negotiation of speed and duplex mode on TX port

yAuto MDI-X on TX port

yOne slide switch for configuring fixed half/full duplex

modes

yStore-and-forward mechanism

yBack-pressure & IEEE802.3x compliant flow control

yFull wire-speed forwarding rate

yFront panel status LEDs

yUsed as a stand-alone device or with a chassis

yHot-swappable when used with a chassis

yManageable through Intelligent Chassis System

INSTALLATION

This chapter gives step-by-step installation instructions for

the Converter.

Selecting a Site for the Equipment

As with any electric device, you should place the equipment

where it will not be subjected to extreme temperatures,

humidity, or electromagnetic interference. Specifically, the

site you select should meet the following requirements:

1. The ambient temperature should be between 32 and

104 degrees Fahrenheit (0 to 40 degrees Celsius).

2. The relative humidity should be less than 90 percent,

non-condensing.

3. Surrounding electrical devices should not exceed the

electromagnetic field (RFC) standards for IEC 801-3,

Level 2 (3V/M) field strength.

4. Make sure that the equipment receives adequate

ventilation. Do not block the ventilation holes on each

side of the switch or the fan exhaust port on the side or

rear of the equipment.

5. The power outlet should be within 1.8 meters of the

switch.

Connecting to Power

1. This Converter is a plug-and-play device.

2. Connect the suppliedAC to DC power adaptor with a

power voltage of 7.5Vdc/1.5Amp to the DC-Jack on

the converter, and then attach the plug into a standard

AC outlet.

Sliding Switch

There is a sliding switch for duplex mode setting for fiber

port. Refer to the table below for more details.

SW1

Half Duplex Full Duplex

(default)

Installing in a Chassis

The Converter can be fit into any of the expansion slots

on a special designed chassis.

yFirst, install the converter onto a carrier supplied with

the chassis:

Step 1- Unscrew and pull out the media converter

board.

Step 2- Plug in the media board to any of the vacant

slot.

Step 3- Fit the converter onto the carrier and use the

screw to secure it.

LED Indicator

The LED indicators give you instant feedback on status of the

converter:

LEDs State Indication

Steady Power on

Power

(PWR) Off Power off

Steady Runs at 100Mbps on TX port

100 Mbps

(100) Off Runs at 10Mbps on TX port

Steady

(FDX) Connection in full duplex mode

FDX stands for FULL-DUPLEX

Lights off Connection in half duplex mode

TX Port (TX)

FX Port (FX)

FDX/COL Blinking

(COL) Data collision

Steady

(LINK) A valid network connection

established

Lights off Not Linking

TX Port (TX)

FX Port (FX)

LINK/ACT Blinking

(ACT) Transmitting or receiving data

ACT stands forActivity

The optional Management Chassis that can control this Smart

Media Converter through the management system, this Smart

Media Converter can be controlled through Web Browser,

SNMP management utility and terminal emulation program.

The Management Chassis will detect the default reset on the

DIP switches and display out the status, also the Management

Chassis can control the function through the management

system.

Through the optional Media

Converter Chassis System

via Management Module,

you can control the setting of

this Smart Media Converter.

To set the Fiber and UTP

(FDX/HDX), UTP (Auto

negotiation/Manual), Speed

(10M/100M), LLR

(Enable/Disable), LLCF

(Enable/Disable)

Device Link Setup To enable or disable the connection of

both UTP port and Fiber port

LLCF Setup To enable or disable the LLCF function

of the device

M1 AN Setup To set the UTP to Auto-negotiation or

Forced Mode

M1 Speed Setup To set the speed of UTP to 10M or 100M

M1 DUP Setup To set the Duplex Mode of UTP port to

Full or Half

M1 FC Setup To set the Flow Control of the UTP to

enable or disable

M1 Link Setup To enable or disable the connection of the

UTP port

M2 LLR Setup To enable or disable the LLR function of

the Fiber port

M2 DUP Setup To set the Duplex Mode of Fiber port to

Full or Half

M2 Link Setup To enable or disable the connection of the

Fiber port

Link Pass Through Function

LLR (Link Loss Return)

When a device connected to the converter and the fiber line

loss the link, the converter’s fiber will disconnect the link of

transmit.

The switch 5 is to enable or disable the LLR function of the

media converter.

TX RX

Sw it c h B Sw it c h A

Cable 3 Cable 2 Cable4

Cable1

Media

ConverterB Media

ConverterA

TX RX

LLCF Off

LLR Off LLCF Off

LLR On

LINK 6

Copper LINK 5

Copper

LINK 4

LINK FAIL 4

Fiber

LINK 3

LINK FAIL 3 Fiber

LINK 1

LINK FAIL 1 Copper

LINK 2

LINK FAIL 2

The table below shows the status happens when LLR function

is working through two ways of connection

Link

Status

Disconnect

Link

1 Link

2 Link

3 Link

4 Link

5 Link

Link

Fail 1

LED

Link

Fail 2

LED

Link

Fail 3

LED

Link

Fail 4

LED

Cable 1 On On Off On On On Off Off On Off

Cable 2 Off On Off On On On On Off On Off

Cable 3 On On On Off On Off Off Off Off On

Cable 4 On Off On On Off On Off On Off Off

Fib er

Copper

TXRX

Fiber Copper

Switc h C Switc h D

LINK 8

LINK 3 LINK 1

LINK 7

Cable 3

Cable 2

Cable 4

Cable 1

Media

ConverterB Media

ConverterA

LINK 2

LINK 4

LINKFAIL4 LINKFAIL3 LINKFAIL1 LINKFAIL2

LLCF Off

LLR Off

LLCF Off

LLR On

Fiber

TX RX

Fib e r

LINK 6 LINK 5

Switc h A Switc h B

TXRX

TX RX

Cable 6 Cable 5

Copper Copper

Link

Status

Disconnect Link 1 Link 2 Link 3 Link 4 Link 5 Link 6 Link 7 Link 8 Link

Fail 1

LED

Link

Fail 2

LED

Link

Fail 3

LED

Link

Fail 4

LED

Cable 1 On On On On Off On On On Off Off Off Off

Cable 2 Off On On On Off On On On On Off Off Off

Cable 3 On On On On On Off On On Off Off Off Off

Cable 4 On On Off On On On On On Off Off On Off

Cable 5 On Off On On On On Off On Off On Off Off

Cable 6 On On On Off On On On Off Off Off Off On

Note: When using two converters, don’t enable the both

device’s LLR function at the same time.

LLCF (Link Loss Carry Forward)

When a device connected to the converter and the TP line loss

the link, the converter’s fiber will disconnect the link of

transmit, so that the other ends will know that there is a

linkage error on this end. And when the Fiber line loss the

link, the converter’s TP will disconnected, and the other end

will know that there is linkage problem exist.

The switch 6 is to enable or disable the LLR function of the

media converter.

TX RX

Switc h B Switc h A

Cable 3 Cable 2 Cable 4

Cable 1

Media

ConverterB Media

ConverterA

TX RX

LLCF Off

LLR Off LLCF On

LLR Off

LINK 6

Copper LINK 5

Copper

LINK 4

LINK FAIL 4

Fiber

LINK 3

LINK FAIL 3 Fiber

LINK 1

LINK FAIL 1 Copper

LINK 2

LINK FAIL 2

The table below shows the status happens when LLCF

function is working through two ways of connection:

Link

Status

Disconnect

Link

1 Link

2 Link

3 Link

4 Link

5 Link

Link

Fail 1

LED

Link

Fail 2

LED

Link

Fail 3

LED

Link

Fail 4

LED

Cable 1 On On Off On On On Off Off On Off

Cable 2 Off Off On On Off On On Off Off Off

Cable 3 On On On Off On Off Off Off Off On

Cable 4 On Off Off On Off On Off On On Off

Fib er

Copper

TXRX

Fiber Copper

Swit c h C Swit c h D

LINK 8

LINK 3 LINK 1

LINK 7

Cable 4

Cable 1

Cable 3

Cable 2

Media

ConverterB Media

ConverterA

LINK 2

LINK 4

LINKFAIL4 LINKFAIL3 LINKFAIL1 LINK FAIL 2

LLCF Off

LLR Off

LLCF On

LLR Off

Fiber

TX RX

Fiber

LINK 6 LINK 5

Swit c h A Swit c h B

TXRX

TX RX

Cable 6 Cable 5

Copper Copper

Link

Stat

Disconnect

Link

1 Link

2 Link

3 Link

4 Link

5 Link

6 Link

7 Link

Link

Fail 1

LED

Link

Fail 2

LED

Link

Fail 3

LED

Link

Fail 4

LED

Cable 1 On On On On Off On On On Off Off Off Off

Cable 2 Off Off On On On On Off On On Off Off Off

Cable 3 On On On On On Off On On Off Off Off Off

Cable 4 On On Off On On On On On Off Off On Off

Cable 5 On Off On On Off On Off On Off On Off Off

Cable 6 On On On Off On On On Off Off Off Off On

Dual Wavelength Single Fiber

The converter combine transmit and receive signal onto one

fiber strand using two kind of wavelength. The units on both

ends of a link are different. One module uses one wavelength

to transmit and a second wavelength to receive, while the

other module flips that relationship. For this reason these

units are sold in pairs.

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