Olktek NXF-742 Series User manual

Enhanced 10/100Base-TX
to
100Base-FX Converter
NXF-742 Series
Operation Manual

COPYRIGHT
All rights reserved. No part of this publication may be reproduced,
stored in a retrieval system, or transmitted in any form or by any
means, whether electronic, mechanical, photo copying, recording or
otherwise, without the prior written permission of the publisher.
FCC WARNING
This equipment has been tested and found to comply
with the limits for a class A device, pursuant to part 15 of FCC rules.
These limits are designed to provide reasonable protection against
harmful interference in a commercial installation. This equipment
generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause
harmful interference to radio communication. Operation of this
equipment in a residential area is likely to cause harmful
interference, in which case, the user will be required to correct the
interference at the user’s own expense.
CE
This is a Class A product. In a domestic environment, this product
may cause radio interference in which case the user may be
required to take adequate measures.
Take special care to read and understand all content given in the
warning boxes: Warning

Table of Contents
1 Introduction............................................................1
About This Guide ....................................................1
Welcome.................................................................1
Purpose ..................................................................1
Terms/Usage ..........................................................1
Features..................................................................2
Specifications..........................................................3
Package Contents ..................................................4
2 Hardware Description............................................5
Product Overview ...................................................5
3 Installation..............................................................8
Location ..................................................................8
DIP Switches ..........................................................9
NWay DIP Switch Setting .....................................10
Link Fault Signaling (LFS) ....................................12
Loopback Test ......................................................13
Local Loopback.....................................................14
Remote Loopback.................................................15
Install the converter ..............................................16
10/100BASE-TX Port .......................................16
100BASE-FX Port ............................................16
Desktop Installation ..............................................17
Getting Connected................................................18
Powering On Unit .............................................18
Connecting Fiber Cable........................................19
Connecting Copper Cable ....................................20
4 LED Indicators......................................................21
Appendix A..............................................................23

Cables...................................................................23
Appendix B..............................................................24
About RJ-45 Cables..............................................24
Appendix C..............................................................25
Mini Converter Chassis.........................................25
Features................................................................25
Affixing Brackets ...................................................26
Installing the Converter.........................................27
Rear view of Chassis and specifications ..............28
Rear View of Chassis with AC Power Supply ..28
Rear View of Chassis with DC Power Supply ..28
Appendix D..............................................................29
Application Diagrams............................................29
Application Diagram I............................................29
Application Diagram II...........................................30
Application Diagram III..........................................30

Enhanced 10/100Base-TX to 100Base-FX Converter
1 Introduction
About This Guide
Welcome
Thank you for choosing the Enhanced 10/100Base-TX
to 100Base-FX Media Converter. This device
integrates copper and multi-mode / single mode fiber
networks in one flexible package.
Purpose
This guide discusses how to set up and install your
Enhanced 10/100Base-TX to 100Base-FX Converter.
Terms/Usage
In this guide, the term “Converter” (first letter upper
case) refers to your Enhanced 10/100Base-TX to
100Base-FX Converter, and “converter” (first letter
lower case) refers to other converters.
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Enhanced 10/100Base-TX to 100Base-FX Converter
Features
•Automatic MDI/MDI-X selection on RJ-45 port
•Link Fault Signaling (LFS)
•Store-and-forward at full wire speed
•Auto-negotiation, NWay support
•Half/Full duplex mode selection
•Remote and local loopback Test via DIP switch
•When DIP switches are set, the system auto-
reboots to new configurations without powering-off.
•Extends distance of up to 2km (6600 feet) multi-
mode fiber and 60km (198000 feet) long-haul
single mode fiber
•Compatible with other 10Base-T & 100Base-TX
/FX devices
•LEDs for at-a-glance device status
•Suitable as stand-alone or in 19" 4/12-slot rack-
mount converter chassis or the single slot mini
chassis (with internal power supply)
•FCC Class A & CE approved
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Enhanced 10/100Base-TX to 100Base-FX Converter
Specifications
Standard: IEEE 802.3 (10BASE-T Ethernet),
IEEE 802.3u (100BASE-TX/FX Fast
Ethernet)
Connector: 1x duplex fiber optic connector:
ST / SC types or
1x simplex fiber optic connector:
WDM single fiber types
1x UTP 100/120ohm; RJ-45 type
Max. Distance:UTP: 100m Cat 3/4/5
Fiber Optic:
2km MM, dual fiber
60km Long-haul SM, dual fiber
20km (66000ft) SM, single fiber
40km Long-haul SM, single fiber
Power: External power supply: 12V DC @ 0.8A
Please see Appendix A for Internal Power Supply
Temperature: Operating: 0 ºC to 50 ºC
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Enhanced 10/100Base-TX to 100Base-FX Converter
Storage: -20 ºC to 70ºC
Humidity: Operating: 10% to 80%RH
Storage: 5% to 90%RH
Emissions: FCC Part 15 of Class A & CE
approved
Dimensions: 109.2x 73.8x 23.4 mm (L x W x H)
Switches for: DIP 1 - Auto-negotiation (RJ-45)
DIP 2 - Copper port duplex mode
DIP 3 - Copper port data bit rate
DIP 4 - Fiber port duplex mode
DIP 5 - Link Fault Signaling (LFS)
DIP 6 - Local Loop Back (LLB)
DIP 7 - Remote Loop Back (RLB)
Package Contents
•One converter unit
•One AC adapter (please check connector type)
•Self-adhesive pads (4 pieces)
•User’s Manual
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Enhanced 10/100Base-TX to 100Base-FX Converter
2 Hardware Description
Product Overview
The Converter is enhanced with Link Fault Signaling
(LFS) and Loopback Test (LBK) functions to offer the
most comprehensive network status monitoring and
connection diagnostics. It is designed for large
workgroups who demand higher speed and wider
bandwidth. It allows migration and expansion from a
copper-based Ethernet to a fiber optic Fast Ethernet.
It features automatic MDI detection setting. This
function allows for simple direct connection to a
workstation, switch or hub. Therefore, network
managers no longer need to worry about cable type
configuration when establishing a connection between
RJ-45 ports.
This Converter is equipped with an RJ-45 port and a
fiber optic ST or SC or WDM port. This allows it to
quickly integrate a 10/100Base-TX network into a
100Base-FX (fiber) network.
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Enhanced 10/100Base-TX to 100Base-FX Converter
It features DIP switches for manual half or full duplex
mode configuration on both copper and fiber ports. In
full duplex mode, this Converter has the ability to
support distances of up to 2 kilometers for multi-mode
fiber and up to 60 kilometers for long-haul single mode
fiber between a LAN switch, file server or another
networking device.
Converter with SC and RJ-45 Connectors
Converter with ST and RJ-45 Connectors
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Enhanced 10/100Base-TX to 100Base-FX Converter
Front Panel View
Fiber
Port
LED
Indicators
Copper
Port
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Enhanced 10/100Base-TX to 100Base-FX Converter
3 Installation
To install your Converter, please see the following
procedures:
•Location
• Switch Settings
•NWay settings
•Link Fault Signaling
•Loopback Test
•Install the Converter
Location
The location selected to install the Converter may
greatly affect its performance. When selecting a site,
we recommend considering the following rules:
•Install the Converter in a fairly cool and dry place.
See Technical Specifications for the acceptable
temperature and humidity operating ranges.
•Install the Converter in a location free from strong
electromagnetic field generators (such as motors),
vibration, dust, and direct exposure to sunlight.
•Leave at least 10cm of space at the front and rear of
the unit for ventilation.
•Affix the provided rubber pads to the bottom of the
Converter to protect the case from scratching.
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Enhanced 10/100Base-TX to 100Base-FX Converter
DIP Switches
DIP 1 Enables / disables auto-negotiation (RJ-45)
DIP 2 Copper port (RJ-45) duplex mode: full or half-
duplex
DIP 3 Copper port (RJ-45) data bit rate: 10Mbps or
100Mbps
DIP 4 Fiber port duplex mode: full duplex or half-
duplex
DIP 5 Enables / disables Link Fault Signaling (LFS)
DIP 6 Enables / disables Local Loop Back (LLB)
DIP 7 Enables / disables Remote Loop Back (RLB)
Notes: All models in this series feature the above set
of DIP switches.
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Enhanced 10/100Base-TX to 100Base-FX Converter
NWay DIP Switch Setting
Use the NWay DIP switch to activate NWay
operations.
Factory NWay DIP switch default set to ON position.
Check that the networking device to be connected to
the Converter has NWay support.
If YES: Check that the NWay DIP switch is set to the
ON position. The Converter will automatically
set the optimum speed and duplex mode on
the copper segment. Users can skip the
settings for DIP switches 2 and 3, when NWay
is activated.
If NO: Set the NWay DIP switch to the OFF position.
Then Use DIP switch 2 to manually select
between half (HD) and full duplex (FD) modes.
Use DIP switch 3 to manually select between
10Mbps or 100Mbps speeds. Set NWay
switch to OFF position when connecting to an
auto-sensing device that only supports
10/100Mbps detection. Some early switch
models only support auto-sensing of speed,
and NOT auto detection of speed and duplex
mode (auto-negotiation).
Important
In order to configure DIP switches 2 (duplex
mode) and 3 (speed), you must set DIP
switch 1 (NWay) to the OFF position
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Enhanced 10/100Base-TX to 100Base-FX Converter
NWay DIP Switch Setting continue
Setting the duplex mode is feasible while the
media converter is “on-line”
Note: If you experience the following problems, please
check if the NWay switch is properly set.
1. The LNK (link) LED is not lit and the
connection cannot be established
2. The LNK LED is lit and the connection is ok,
but cannot transmit or receive data
3. The converter functions properly for a while,
then, it does not work. And then it works after
powering off and then on again.
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Enhanced 10/100Base-TX to 100Base-FX Converter
Link Fault Signaling (LFS)
LFS is a “nice to have” function that is extremely
beneficial in terms of network status monitoring. The
LFS LED will immediately light to indicate when a
cable has been severed or when some other cause of
disruption in service has occurred. The LFS function
monitors both copper and fiber segments giving a total
connection status report.
Set LFS to ON position for normal operational use.
Set LFS to OFF position when installing cables or
when testing the network connection.
Note: The LFS feature influences both fiber and
copper segments. Therefore, when disruption occurs
on either segment, the LFS feature will be activated
and the LED will light to indicate that the entire
connection is down.
To appreciate the full benefits of LFS, four converters
can be used to build a primary and a secondary link.
They must be connected to a switch that supports
Spanning Tree or Fast Spanning Tree protocols. By
default, transmission of data will travel via the primary
link. Once a fault has been detected, transmission will
automatically be switched to the secondary link,
resulting in ‘non-stop’ network connectivity.
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Enhanced 10/100Base-TX to 100Base-FX Converter
Loopback Test
This Converter features DIP switches to activate both
local and remote loopback diagnostic test functions.
Use local loop back to check if the copper segment is
connected properly, and use remote loop back to
check if the fiber segment is connected properly.
Please see Diagram below:
Dip Switch 6 ON: enables local loop back function
OFF: disables local loop back function
Dip Switch 7 ON: enables remote loop back function
OFF: disables remote loop back function
Make sure that the cables are connected properly
before getting started. Conduct either the local or
remote test, not both at the same time. Follow the
steps below to perform the diagnostic tests.
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Enhanced 10/100Base-TX to 100Base-FX Converter
Local Loopback
1. Test Condition setup – for the function to produce
an accurate result, be sure to set switches
according to the table below:
DIP Switches 1 2 3 4 5 6 7
Converter A OFF FD 100 FD OFF ON OFF
Converter B OFF FD 100 FD OFF OFF OFF
Test Condition
2. Launch a loopback or diagnostics testing program
and follow the instructions given. Typically, the
instructions will be similar to the following:
a. Enter the number of test messages
(frame packets) to be sent (Between 1 –
1000)
b. Click on the START button
c. The program will send a testing
message looped in the copper segment,
and display a pass/fail result
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Enhanced 10/100Base-TX to 100Base-FX Converter
Remote Loopback
1. Test Condition setup – In order for the function to
produce an accurate result, set switches
according to the table below:
Test Condition
DIP Switches 1 23 45 6 7
Converter A OFF FD 100 FD OFF OFF OFF
Converter B OFF FD 100 FD OFF OFF ON
2. Launch a loopback or diagnostics testing program
and follow the instructions given. Typically, the
instructions will be similar to the following:
a. Enter the number of test messages (frame
packets) to be sent (Between 1 – 1000)
b. Click on the START button
c. The program will send a testing message
looped in the fiber segment, and display a
pass/fail result
Warning
Be sure to deactivate both local and remote both loopback
test functions for normal converter operations
NOTE: On a PC, use a program such as Sniffer to conduct the
tests. Other methods include the use of SmartBits
series testing equipment. If you do not have access to
either method, please contact your vendor for advice.
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Enhanced 10/100Base-TX to 100Base-FX Converter
Install the converter
This Converter utilizes ports with fiber and copper port
connectors functioning under Ethernet and/or Fast
Ethernet protocols.
10/100BASE-TX Port
The 10/100BASE-TX port supports network speeds of
either 10Mbps or 100Mbps, and can operate in half-
and full duplex transfer modes. This port also offers
automatic MDI/MDI-X crossover detection that gives
true "plug and play" capability - just plug-in the
network cable to the port and the port will adjust
according to end node device automatically. The RJ-
45 connector is suitable for UTP cable Category 3, 4,
5 or better.
100BASE-FX Port
The 100BASE-FX port adds a fiber Fast Ethernet link
to your network device. Compliant with IEEE 802.3u,
this port can transmits data at 100Mbps in full duplex
mode across distances of up to 2km over multi-mode
fiber-optic cable. The fiber port has a choice of three
fiber connector types: ST, SC and WDM.
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