Metrobility 2151-AD-01,2152-1A-01,2152-1D-01,2152-1F-01,2152-17-01,2152-1J-01,2152-1K-01,2152-1M-01,2152-1X-01,2152-1Y-01,2152-AA-01,2152-AD-01,2152-AF-01,2152-A7-01,2152-AJ-01,2152-AX-01,2152-AY-01,2152-DD-01,2152-DF-01,2152-D7-01,2152-DJ-01,2152-77-01,2152-JJ-01,2152-KM-01,2125-34-01,2125-37-01,2135-34-01 User guide

Lancast

®

Gigabit “twister”™ and

SONET “twister”

™

“twister”

2152

1000BASE-LX

BWDM

1000BASE-LX

SM MM

LINK

1000BASE-LX

SM

LINK

OC-12

TX RX

LINK LINK

TX RX

LINK

1000BASE-SX

1000BASE-TX

TX RX

“twister”

1000BASE-SX

MM

“twister”

LINK

“twister”

LINK

“twister”

OC-12

MMSM

1000BASE-LX

TX RX

™

PWR

LINK

™

2152

PWR

™

2152

PWR

™

2135

PWR

2152

1000BASE-TX

SM

LINK

PWR

LINK

“twister”

LINK

1000BASE-SX

SM MM

LINK LINK

1000BASE-SX

RX

TX

SM

RX

1000BASE-TX

“twister”

“twister”

MM

“twister”

OC-3

MM

LINK

1000BASE-LX

BWDM

1000BASE-LX

TX TXRX RX

1000BASE-LX

TX

SM

LINK LINK

OC-3

TX TX

LINK

LINK

™

RX

RX

™

2152

PWR

™

2152

PWR

™

2151

PWR

™

2125

PWR

Installation & User Guide

2151-AD-01 • 2152-1A-01 • 2152-1D-01 • 2152-1F-01 • 2152-17-01
2152-1J-01 • 2152-1K-01 • 2152-1M-01 • 2152-1X-01 • 2152-1Y-01
2152-AA-01 • 2152-AD-01 • 2152-AF-01 • 2152-A7-01 • 2152-AJ-01
2152-AX-01 • 2152-AY-01 • 2152-DD-01 • 2152-DF-01 • 2152-D7-01
2152-DJ-01 • 2152-77-01 • 2152-JJ-01 • 2152-KM-01 • 2125-34-01

2125-37-01 • 2135-34-01

Lancast Gigabit “twister” and SONET “twister”

Multimode-to-Singlemode Converter:

2125-34-01 ____ OC-3/STM-1 multimode SC to singlemode SC
2125-37-01 ____ OC-3/STM-1 multimode SC to singlemode SC (40km)
2135-34-01 ____ OC-12/STM-4 multimode SC to singlemode SC
2151-AD-01____1000Base-SX multimode SC to 1000Base-LX singlemode SC

Fiber-to-Fiber Repeater:

2152-AA-01 ____ 1000Base-SX multimode SC to 1000Base-SX multimode SC
2152-AD-01____1000Base-SX multimode SC to 1000Base-LX singlemode SC
2152-AF-01 ____ 1000Base-SX multimode SC to 1000Base-MR singlemode SC
2152-A7-01 ____ 1000Base-SX multimode SC to 1000Base-LH singlemode SC
2152-AJ-01 ____ 1000Base-SX multimode SC to 1000Base-EX singlemode SC
2152-AX-01 ____ 1000Base-SX multimode SC to 1000Base-LX singlemode SC 1550/

1310nm bidirectional wavelength division multiplexed (BWDM)

2152-AY-01 ____ 1000Base-SX multimode SC to 1000Base-LX singlemode SC

1310/1550nm BWDM
2152-DD-01____ 1000Base-LX singlemode SC to 1000Base-LX singlemode SC
2152-DF-01 ____ 1000Base-LX singlemode SC to 1000Base-MR singlemode SC
2152-D7-01 ____ 1000Base-LX singlemode SC to 1000Base-LH singlemode SC
2152-DJ-01 ____ 1000Base-LX singlemode SC to 1000Base-EX singlemode SC
2152-77-01 ____ 1000Base-LH singlemode SC to 1000Base-LH singlemode SC
2152-JJ-01 ____ 1000Base-EX singlemode SC to 1000Base-EX singlemode SC
2152-KM-01 ___ 1000Base-SX multimode LC to 1000Base-LX singlemode LC

Copper-to-Fiber Repeater:

2152-1A-01 ____ 1000Base-TX to 1000Base-SX multimode SC
2152-1D-01 ____ 1000Base-TX to 1000Base-LX singlemode SC
2152-1F-01 ____ 1000Base-TX to 1000Base-MR singlemode SC
2152-17-01 ____ 1000Base-TX to 1000Base-LH singlemode SC
2152-1J-01 ____1000Base-TX to 1000Base-EX singlemode SC
2152-1K-01 ____ 1000Base-TX to 1000Base-SX multimode LC
2152-1M-01____ 1000Base-TX to 1000Base-LX singlemode LC
2152-1X-01 ____ 1000Base-TX to 1000Base-LX singlemode SC 1550/1310nm BWDM
2152-1Y-01 ____ 1000Base-TX to 1000Base-LX singlemode SC 1310/1550nm BWDM

This publication is protected by the copyright laws of the United States and other countries, with all rights
reserved. No part of this publication may be reproduced, stored in a retrieval system, translated, transcribed,
or transmitted, in any form, or by any means manual, electric, electronic, electromagnetic, mechanical,
chemical, optical or otherwise, without prior explicit written permission of Metrobility Optical Systems, Inc.

© 2001-2003 Metrobility Optical Systems, Inc. All rights reserved. Printed in USA.

Table of Contents

Lancast Gigabit “twister” and SONET “twister” Installation
& User Guide

Introduction ................................................................................................................ 4

Overview ..................................................................................................................... 5

Installation Guide ....................................................................................................... 6

STEP 1: Unpack the “twister” and Accessories .......................................... 6

STEP 2: Choose an Appropriate Location .................................................. 6

STEP 3: Set the DIP Switches ..................................................................... 7

STEP 4: Connect to the Network ................................................................ 8

STEP 5: Apply Power.................................................................................. 9

User Guide ................................................................................................................ 11

LED Indicators .......................................................................................... 11

Link Loss Return (LLR)............................................................................ 12

Link Loss Carry Forward (LLCF)............................................................. 13

Copper Loss Carry Forward (CLCF) ........................................................ 14

Topology Solutions ................................................................................... 15

Technical Specifications ............................................................................ 15

Product Safety, EMC and Compliance Statements ................................... 18

Warranty and Servicing ............................................................................. 19

Lancast is a registered trademark; Metrobility Optical Systems, the Metrobility Optical Systems logo, and
“twister” are trademarks of Metrobility Optical Systems, Inc.

The information contained in this document is assumed to be correct and current. The manufacturer is not
responsible for errors or omissions and reserves the right to change specifications at any time without notice.

IntroductionThank you for choosing the Lancast “twister”.

The Lancast Gigabit “twister” and SONET “twister” represent the latest technology
available for extending Gigabit Ethernet, OC-3/STM-1 and OC-12/STM-4 networks.
Since Metrobility first developed “twister” media conversion, it has set the standard
for providing affordable means of integrating mixed media networks. As LANs/
WANs grow and evolve, this technology provides an ideal solution for building
effective migration strategies.

In addition to the standalone unit, the “twister” is available as an SNMP manageable
module for the Lancast Intelligent 7500 chassis and the Radiance central or premise
service platforms.

The information in this guide will help you to install and start using your “twister”.

4

Overview

The Lancast “twister” provides seamless integration between fiber optic

multimode and singlemode segments in Gigabit Ethernet, OC-3/STM-1 or OC-12/
STM-4 environments. It supports copper to fiber translation as well as wavelength
conversion from 850nm to 1310 or 1550nm, and from 1310nm to 1550nm. With the
Lancast “twister”, you can increase your network reach up to 70km on a single
segment. For networks that require extended distance support, use the 2152-series
repeaters. The repeaters recover incoming data and regenerate the signal, thus
allowing multiple hops over any distance.

The Gigabit “twister” and SONET “twister” offer the following key features:

•A Link Loss Return (LLR) switch on each fiber optic port to aid in
troubleshooting remote network connections.

• Link Loss Carry Forward (LLCF) functionality on the fiber-to-fiber
units or Copper Loss Carry Forward (CLCF) on the copper-to-fiber
models. LLCF and CLCF work with LLR in diagnosing network
connections.

• Signal recovery that restores data integrity, enabling repetition over
unlimited distances. (2152-series only)

• Auto-sensing copper port that eliminates the need for crossover cables.

• Full-duplex support.

• Gigabit Ethernet (1Gbps), OC-3/STM-1 (155Mbps) or OC-12/STM-4
(622Mbps) support.

•A link LED on each port to indicate that the port is receiving idle link
signals or a satisfactory level of light.

• IEEE 802.3 Sec. 14 / IEEE 802.3z compliance (Gigabit “twister” only).

• Universal desktop power supply (100-240V / 50-60Hz).

• Data transmission over singlemode fiber up to 70km.

• Numerous connectivity options, including bidirectional wavelength
division multiplexed (BWDM) fiber.

*Actual distance should be calculated based on the actual link loss budget.

Gigabit “twister” and SONET “twister” 5

*

Installation Guide

Follow the simple steps outlined in this section of the guide to install and start
using your Lancast “twister”.

Unpack the “twister” and Accessories

Check that the following components have been included:

• Lancast “twister”

• Power supply

• Power cord

• Four (4) rubber feet

Your order has been provided with the safest possible packaging, but
shipping damage does occasionally occur. Inspect your order carefully. If
you discover any shipping damage, notify your carrier and follow their
instructions for damage and claims. Save the original shipping carton in
case return or storage of the unit is necessary.

Choose an Appropriate Location

The “twister” is intended for use in either office or industrial environments.

2

The unit must be located within six (6) feet of the AC power source being
used and placed as far away as possible from electrical noise generating
equipment such as copiers, electrostatic printers and other motorized
equipment. If exposed twisted-pair wiring is used nearby, the wiring should
be routed as far away as possible from power cords and data cables to
minimize interference.

The unit may be oriented in any manner which allows you to make physical
connection to the power supply and leaves a minimum of six (6) inches of
space for proper ventilation.

Set the DIP Switches

The Lancast “twister” includes a set of six DIP switches located on the

3

6 Installation Guide

back of the unit. (See figure below.) These switches are used to enable/
disable functions and are clearly marked. Unmarked switches are nonfunc­tional. LLR1 controls Link Loss Return on Port 1. LLR2 controls Link
Loss Return on Port 2. LLCF sets Link Loss Carry Forward on the fiber­to-fiber repeaters (LLCF is nonfunctional on the fiber-to-fiber converters).
CLCF sets Copper Loss Carry Forward on the copper-to-fiber repeaters.