Prisma T1/E1/J1 Media Converter Module Installation ... · 2 Prisma T1/E1/J1 Media Converter Module Installation Instructions 4008217 Rev B Overview, Continued In These Installation

November 2004

Prisma® T1/E1/J1 Media Converter Module Installation Instructions Overview

Purpose These installation instructions provide product information and instructions for installing the Prisma® T1/E1/J1 Media Converter module.

Introduction The Prisma T1/E1/J1 modules are physical layer, SNMP-manageable devices that convert twisted pair to fiber optics and operate at a switch-selectable protocol rate of T1 (1.544), E1 (2.048), and the Japanese J1 (1.544).

Qualified Personnel Only appropriately qualified and trained personnel should install, operate, maintain, and service this product.

WARNING:

Allow only qualified personnel to install, operate, maintain, and service this product. Otherwise, personal injury or equipment damage may occur.

Continued on next page

2 Prisma T1/E1/J1 Media Converter Module Installation Instructions 4008217 Rev B

Overview, Continued

In These Installation Instructions These installation instructions contain the following topics.

Topic See Page

Important Safety Instructions 3

Laser Safety 5

Product Description 8

Configuration Instructions 9

Choosing Your Settings 14

Crossover/Pass-Through Connection 16

Module Installation Instructions 17

Fiber Optic Cleaning Guidelines 19

Module LED Indicators 21

Troubleshooting 23

For Information 27

4008217 Rev B Prisma T1/E1/J1 Media Converter Module Installation Instructions 3

Important Safety Instructions

Read and Retain Instructions Carefully read all safety and operating instructions before operating this equipment, and retain them for future reference.

Follow Instructions and Heed Warnings Follow all operating and use instructions. Pay attention to all warnings and cautions in the operating instructions, as well as those that are affixed to this equipment.

Electrostatic Discharge Electrostatic discharge (ESD) results from the static electricity buildup on the human body and other objects. This static discharge can degrade components and cause failures. Take the following precautions against electrostatic discharge: • Use an anti-static bench mat and a wrist strap or ankle strap designed to safely

ground ESD potentials through a resistive element. • Keep components in their anti-static packaging until installed. • Avoid touching electronic components when installing a module.

EMC Where this equipment is subject to USA FCC and/or Industry Canada rules, the following statements apply:

FCC Statement for Class A Equipment

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when this equipment is operated in a commercial environment.

This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction document, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case users will be required to correct the interference at their own expense.



Important Safety Instructions, Continued

Industry Canada – Industrie Canadienne Statement

This apparatus complies with Canadian ICES-003. Cet appareil est confome à la norme NMB-003 du Canada.

CENELEC/CISPR Statement with Respect to Class A Information Technology Equipment

This is a Class A equipment. In a domestic environment this equipment may cause radio interference in which case the user may be required to take adequate measures.

Modifications This equipment has been designed and tested to comply with applicable safety, laser safety, and EMC regulations, codes, and standards to ensure safe operation in its intended environment.

Do not make modifications to this equipment. Any changes or modifications could void the user’s authority to operate this equipment.

Modifications have the potential to degrade the level of protection built into this equipment, putting people and property at risk of injury or damage. Those persons making any modifications expose themselves to the penalties arising from proven non-compliance with regulatory requirements and to civil litigation for compensation in respect of consequential damages or injury.


Laser Safety

Introduction This equipment contains an infrared laser that transmits intensity-modulated light and emits invisible radiation.

Warning: Radiation

WARNINGS:

• Avoid personal injury! Use of controls, adjustments, or performance of procedures other than those specified herein may result in hazardous radiation exposure.

• Avoid personal injury! The laser light source on this equipment emits invisible laser radiation. Avoid direct exposure to the laser light source.

• Do not apply power to this equipment if the fiber is unmated or unterminated. • Do not stare into an unmated fiber or at any mirror-like surface that could reflect

light that is emitted from an unterminated fiber. • Do not view an activated fiber with optical instruments (e.g., eye loupes,

magnifiers, microscopes). • Use safety-approved optical fiber cable to maintain compliance with applicable

laser safety requirements. Warning: Fiber Optic Cables

WARNING:

Avoid personal injury! Qualified service personnel may only perform the procedures in this document. Wear safety glasses and use extreme caution when handling fiber optic cables, particularly during splicing or terminating operations. The thin glass fiber core at the center of the cable is fragile when exposed by the removal of cladding and buffer material. It easily fragments into glass splinters. Using tweezers, place splinters immediately in a sealed waste container and dispose of them safely in accordance with local regulations.



Laser Safety, Continued

Safe Operation For Software Controlling Optical Transmission Equipment If this document discusses software, the software described is used to monitor and/or control Scientific-Atlanta and other vendors’ electrical and optical equipment designed to transmit video, voice, or data signals. Certain safety precautions should be observed when operating equipment of this nature.

For equipment specific safety requirements, refer to the appropriate section of the equipment documentation.

For safe operation of this software, refer to the following warnings.

WARNINGS:

• Ensure that all optical connections are complete or terminated before using this equipment to remotely control a laser device. An optical or laser device can pose a hazard to remotely located personnel when operated without their knowledge.

• Allow only personnel trained in laser safety to operate this software. Otherwise, injuries to personnel may occur.

• Restrict access of this software to authorized personnel only.

• Install this software in equipment that is located in a restricted access area.

Laser Safety Information This laser based multi-mode transceiver is an IEC 60825-1 Amend. 2 Class 1 laser product. It complies with FDA performance standards (21 CFR 1040.10 and 1040.11) for laser products except for deviations pursuant to Laser Notice No. 50, dated July 26, 2001.

Note: All adjustments have been made at the factory prior to shipment of the module. No maintenance or alteration of this device is required. No adjustments or controls provided.

Class 1 Laser Product Avoid possible exposure to hazardous levels of invisible laser radiation; do not view laser aperture.



Laser Safety, Continued

Product Specific Laser Information The following illustration displays the location of the laser apertures on this module’s front panel.

The following label is on the module.

Class 1 Laser product, Luokan 1 Laserlaite,Laser Klasse 1, Appareil A'Laser de Classe 1

Laser Aperture


Product Description

Prisma T1/E1/J1 Module Each Prisma T1/E1/J1, TP/FX module includes one RJ-48 and one pair of ST or SC fiber optic connectors (or one small form factor duplex connector) and requires one slot in any SNMP-manageable Prisma MediaCenter™ chassis or an unmanaged MediaCPE™ chassis.

Also available for single-strand fiber, the Prisma T1/E1/J1, TP/SSFX module includes one RJ-48 and one SC fiber optic connector. Prisma T1/E1/J1, TP/SSFX modules allow two wavelengths to share one fiber strand — Full-Duplex data travels on different wavelengths (1310 nm and 1550 nm) — doubling the capacity of installed fiber.

Note: In order to function correctly, you must have a Prisma T1/E1/J1 module at BOTH ends of the conversion. The data transmitted on the fiber ports can only be received and interpreted by the receive fiber of another Prisma T1/E1/J1 module.

Prisma T1/E1/J1 Module Illustration Refer to the following illustration for a view of the module front panel.


Configuration Instructions

Introduction The Prisma T1/E1/J1 module can be configured for various features (see DIP Switch Settings later in this document) that help improve the performance and reliability for your T1/E1/J1 requirements. The following instructions are for both managed and unmanaged modules.

Managed Modules To manage Prisma T1/E1/J1 modules, an SNMP agent must be present i.e., the MediaCenter chassis with embedded management. When using Prisma T1/E1/J1 modules in a managed environment, manually configure the features that you cannot configure via management software prior to installation of the module. (See Choosing Your Settings and DIP Switch Settings later in this document for configuration instructions/description of the functions). After completing necessary pre-installation settings, install the Prisma T1/E1/J1 module (see Module Installation Instructions later in this document), and configure additional features via the software.

The features that are configurable via management software include: Loop Back Selection, Transmit Data Source, Line Encoding, NRZ (Non-Return-to-Zero), and Receive Equalizer Gain Limit (EGL). Within the PrismaView™ software for media conversion, these settings are configured in the Module Detail section of the main viewing screen, under the picture of the module. Refer to the help file for more information.

When installed in a MediaCenter chassis, Prisma T1/E1/J1 modules are only SNMP-manageable and software configurable is connected to a Prisma T1/E1/J1 module installed in a managed chassis. Some features may not be software configurable on a remote unit.

Note: Management software overrides any hardware settings (e.g., jumper, switch, etc.), so you MUST configure a module that will be managed via the software. Until a module installed in a managed chassis is configured via the software, the module (and its LEDs) may not work properly.

Important: When testing, it is recommended that you test your modules first in an unmanaged environment. To do this, turn the SNMP management switch to OFF on a MediaCenter chassis, or remove the management module from a MediaCenter chassis. Follow the unmanaged configuration instructions, then install the module, connect the cables, and test the LEDs. When finished, reactivate management and configure the unit via the software.



Configuration Instructions, Continued

Unmanaged Modules Before installing, an unmanaged Prisma T1/E1/J1 module can be configured for its selectable features via DIP switches located at position S3 and S2 and jumpers located at positions JP1 and JP2 in the PCB.

DIP Switch Location Refer to the following diagram for DIP switch location.




DIP Switch Settings Refer to the following tables for DIP switch S2 and S3 settings.

Switch S2

Function Switch Settings Result

T1/E1 Selection 1: OFF T1 Mode Selected (D)

1: ON E1 Mode Selected

Receive Equalizer Gain Limit (EGL) *

For E1 2: ON -12 dB (Short Haul)

2: OFF -43 dB (Long Haul)

For T1 2: ON -36 dB (Long Haul)

2: OFF -30 dB (Limited Long Haul) (D)

Line Encoding * 3: ON HDB3 (E1) / B8ZS (T1)

3: OFF AMI (D)

Transmit LIU Waveshape

For E1 4: ON 5: ON 6: ON 75 ohms

4: OFF 5: ON 6: ON 125 ohms

4: ON 5: ON 6: OFF 75 S ohms w/ High Return Loss

4: OFF 5: ON 6: OFF 125 S ohms w/ High Return Loss





For T1 4: ON 5: ON 6: ON DSX-1 (0 to 133 ft) 0 dB CSU (D)

4: OFF 5: ON 6: ON DSX-1 (133 to 266 ft)

4: ON 5: OFF 6: ON DSX-1 (266 to 399 ft)

4: OFF 5: OFF 6: ON DSX-1 (399 to 533 ft)

4: ON 5: ON 6: OFF DSX-1 (533 to 655 ft)

4: OFF 5: ON 6: OFF -7.5 dB CSU

4: ON 5: OFF 6: OFF -15 dB CSU

4: OFF 5: OFF 6: OFF -22.5 dB CSU

Receive LIU Termination 7: ON 8: ON Receive Side Termination Disabled

7: OFF 8: ON Receive Side 120 ohms Enabled

7: ON 8: OFF Receive Side 100 ohms Enabled (D)

7: OFF 8: OFF Receive Side 75 ohms Enabled

Transmit Data Source* 9: ON 10: ON Standard Data (D)

9: OFF 10: ON Transmit Pseudorandom Bit Sequence (PRBS)

9: ON 10: OFF Transmit Alternating Ones & Zeros (TAOZ)

9: OFF 10: OFF Transmit Unframed All Ones (TUA1)

* Configurable via SNMP (D) = Default Setting




Switch S3


Jitter Attenuator Select 1: ON Place Jitter Attenuator on RCV Side (D)

1: OFF Place Jitter Attenuator on XMT Side

Remote Management 2: ON Remote Management Enabled

2: OFF Remote Management Disabled (D)

Loopback Selection* 3: ON 4: ON No Loopback (D)

3: OFF 4: ON Analog Loopback

3: ON 4: OFF Local Loopback

3: OFF 4: OFF Remote Loopback

Monitor/Boost Mode 5: ON 6: ON Normal Operation (No Boost) (D)

5: OFF 6: ON 20 dB

5: ON 6: OFF 26 dB

5: OFF 6: OFF 32 dB

NRZ Selection * 7: ON Disable NRZ

7: OFF Enable NRZ (D)

Fiber Type 8: Factory Configured DO NOT CHANGE

9: Factory Configured DO NOT CHANGE

10: Factory Configured DO NOT CHANGE

* Configurable via SNMP (D) = Default Setting


Choosing Your Settings

Introduction To ensure that Prisma T1/E1/J1 modules functions properly, several pre-installation decisions must be made. Knowledge of the distance to the main office and the troubleshooting capabilities desired must be known in order for installation to be successful.

T1/E1/J1 Selection This feature selects the data rate that the module will be converting from either T1, E1, or J1. The default is OFF, with T1 mode selected.

Receive Equalizer Gain Limit This option allows the user to compensate for diminishing signal intensity over the data line by adjusting the sensitivity of the UTP receiver. By setting the Receive Equalizer Gain Limit (EGL) correctly, the reliability of the signal is ensured.

Line Encoding This option allows the user to set the transmit/receive encoding for HDB3, B8Z3, or AMI.

Transmit LIU Waveshape (Line Buildout) This option controls the waveshape being output by the transmitter. This helps to correct problems related to cabling (i.e., cross-talk, electromagnetic interference, etc.). Improperly setting this switch causes signal degradation.

Receive LIU Termination (Line Termination) This option sets receive termination. This is used to properly terminate cables that prevent signal reflections that can cause signal degradation.

Transmit Data Source This is a diagnostic tool that sends specific patterns of data to determine problems along the cable. The user can set the module to send either a PRBS (pseudorandom bit sequence), an alternating ones and zeros (TAOZ), or an unframed all ones (TUA1) code, depending on your diagnostic needs. The default is with both switches in the ON position (standard data).

Jitter Attenuator Select The user selects Jitter Attenuation on the UTP transmit or receive side. This decreases jitter in the data stream that increases data reliability. The jitter attenuator is always enabled.



Choosing Your Settings, Continued

Remote Management This mode allows for the configuration of a remote unit, facilitating easy testing of the line integrity of the remote unit’s copper port. As Prisma T1/E1/J1 modules are always deployed in pairs, if remote management is desired, the Remote Management feature must be enabled on the REMOTE unit only. When Remote Management is enabled, the local unit can configure all SNMP-configurable features for both units. Refer to the Module LED Indicators later in this document for functionality.

Note: When the Remote Management feature is enabled on the remote unit, the remote unit’s chassis must have SNMP-management disabled (i.e., the SNMP switch turned OFF on the MediaCenter chassis).

Loopback Selection This is another diagnostic tool that enables the user to test the integrity of the line by allowing the data to be looped back. Loopback test modes include: Fiber Analog Loopback, Fiber Digital Loopback and Twisted Pair Digital Loopback.

Monitor/Boost Mode This mode boosts the UTP receive signal (i.e., internal linear gain boost). This helps the UTP receiver to compensate for line loss.

NRZ (Non-Return-to-Zero) A method for transmitting and recording data so that it keeps the sending and receiving clocks synchronized. This is especially helpful in situations where bit stuffing is employed— the practice of adding bits to a data stream so it conforms with communications protocols.


Crossover/Pass-Through Connection

Introduction The Prisma T1/E1/J1 module comes with an RJ-48 UTP connector that features a push-button switch, located next to the port, for selecting a crossover workstation or pass-through repeater/hub connection.

To select a cross-over connection, press the push-button IN. A pass-through connection is selected when the push-button is OUT.

If unsure what type of connection is needed, set the push-button switch to the position that DOES NOT make the NO LNK LED glow.


Module Installation Instructions

Electrostatic Discharge Precautions Electrostatic discharge (ESD) can cause damage to the plug-in Media Converter modules that install into the chassis. Always observe the following precautions when installing or handling an add-in module or any board assembly.

1. Do not remove the module from its protective packaging until you are ready to install it.

2. Wear an ESD wrist grounding strap before handling any module or component. If you do not have a wrist strap, maintain grounded contact with the system unit throughout any procedure requiring ESD protection.

WARNING:

Integrated circuits and fiber optic components are extremely susceptible to electrostatic discharge damage. Do not handle these components directly unless you are a qualified service technician and use tools and techniques that conform to accepted industry practices.

3. Hold boards by the edges only; do not touch the electronic components or gold connectors.

4. After removal, always place the boards on a grounded, static free surface, ESD pad, or in a proper ESD bag. Do not slide the board over any surface.



Module Installation Instructions, Continued

Installing the Prisma T1/E1/J1 Module Follow these steps to install the Prisma T1/E1/J1 module in a Prisma MediaCenter chassis or Prisma MediaCPE chassis.

CAUTION:

RJ-48 connectors are not for use with telephone networks. If used in this manner, damage to the telephone network may result.

1. Turn the chassis power switch to OFF and disconnect the chassis from the power source.

2. Remove the blank bracket (if present) covering the slot where the module is to be installed by removing the screws on the outside edges of the bracket.

3. Slide the module into the chassis using the card guides until the module is seated securely in the connector.

4. Secure the module to the chassis by tightening the captive screw(s).

Note: Save any “blanks” removed during installation for future use should your configuration requirements change.


Fiber Optic Cleaning Guidelines

Cleaning Optical Connectors Cleaning fiber-optic connectors can help prevent interconnect problems and therefore aid system performance. When optical connectors are disconnected and reconnected, the fiber surface can become dirty or scratched. The goal of cleaning the fiber optic connectors is to remove all dust and contaminants without leaving any residue.

Required Equipment The following equipment is required to clean the ends of fiber-optic connectors. • Optical-grade (91%) isopropyl alcohol • Lint-free wipes • Compressed air (also called “canned air”)

Tips for Optimal Fiber-Optic Connector Performance Follow these guidelines to ensure optimal connector performance. • Connect or disconnect optical connector performance. • Always use compressed air before cleaning the fiber-optic connectors. • Use end caps on connectors when they are not in use. • Always use compressed air to clean the end caps. • Use optical-grade isopropyl alcohol of at least 91% or greater. Anything less than

91% isopropyl may leave a film on the fiber surface, creating more problems. • Do not contaminate your alcohol supply. − Use a sprayer (a fountain pump is also adequate) − Do not put used alcohol back into the main container

• Use only lint-free wipes. Never use “Kleenex-type” tissues. • If you have any degraded signal problems, clean the fiber-optic connector.



Fiber Optic Cleaning Guidelines, Continued

Cleaning Optical Connectors Follow these steps to clean an optical connector.

1. Remove loose dirt or dust from the end of the connector by using compressed air (canned air) to blow dirt off the fiber and the connector.

2. Dampen a lint-free wipe with optical-grade isopropyl alcohol. If no wipes are available, use ferrule cleaner, part number 468517.

3. Clean the end of the connector using the lint-free wipe or ferrule cleaner.

4. Inspect the end of the connector for obvious contamination.

5. Mate the connector with an adapter or cover with an end cap.


Module LED Indicators

Prisma T1/E1/J1 Module Front Panel The following illustration shows the Prisma T1/E1/J1 module front panel.

LEDs Near the Untwisted-Pair Port The module front panel contains the following LEDs near the untwisted-pair port.

Untwisted-Pair LED Description

LPBK • Glows green when module is in Loopback mode.

NO LNK • Glows green when a link is NOT established.

PBEO • When Transmit Data Source is set to pseudorandom bit sequence, this LED glows yellow when Prisma T1/E1/J1 module receives a pseudorandom bit sequence with errors.

• The LED stays off when the converter receives a pseudorandom bit sequence without errors.

• When Transmit Data Source is set to any other configuration besides pseudorandom bit sequence, this LED remains off as well.



Module LED Indicators, Continued

LEDs Next to the Fiber Optic Port The module front panel contains the following LEDs next to the fiber optic port.

Fiber Optic LED Description

NRZ • Glows green when NRZ is enabled.

RM • Glows green on the remote unit when Remote Management is enabled.

• Glows green on the local unit when it has discovered a manageable remote unit.

NO LNK • Glows green when a link is NOT established.

SYM • Glows yellow when a symbol error has occurred.


Troubleshooting

General Troubleshooting • During installation, first test the fiber and UTP connections with all

troubleshooting features disabled, then enable these features, if desired, just before final installation. This reduces the features’ interference with testing.

• When working with units where the features cannot be disabled, you must establish BOTH your UTP and fiber connections; the NO LNK LEDs should not be lit (i.e., NO LNK LED not lit = good connection, NO LNK LED lit = problem).

• To test a media converter by itself, first make sure you have an appropriate fiber patch cable, and then follow these steps to test.

1. Connect the media converter to the UTP device with a UTP cable.

2. Loop a single strand of fiber from the transmit port to the receive port of your media converter.

Note: For single-strand fiber products, connect a single fiber cable from the local site Prisma T1/E1/J1 modules to a remote site’s Prisma T1/E1/J1 module.

3. Verify that you have a valid connection for both the twisted pair and fiber ports (see Module LED Indicators) on your media converter.



Troubleshooting, Continued

Loopback Testing Prisma T1/E1/J1 modules include three loopback test modes: fiber digital loopback, twisted pair digital loopback and fiber analog loopback. A digital loopback test retransmits the signal after regenerating its bits and reconditioning the signal, while an analog loopback test simply redirects the incoming signal back out to the origin. The following illustration shows the path that a signal takes in each of the three loopback test modes.

The following illustration shows the path that a signal takes in each of the three loopback test modes.

Loopback testing aids in troubleshooting problems with network connections should they occur. “Looping" received data back onto the transmit path helps determine whether a connection is still valid. Twisted pair digital loopback tests isolate problems on the copper run between a T1/E1 converter and the connected device, while fiber digital loopback tests isolate problems on the fiber run.




The following four illustrations show a typical progression of digital loopback tests; this series allows you to individually test each segment of the conversion. Start by checking the copper segment at the local side, then the copper segment at the remote side, etc.




Testing with Pseudorandom Bit Sequence (PRBS) To test using pseudorandom bit sequence, configure the Prisma T1/E1/J1 modules for No Loopback, and then configure the Transmit Data Source to “Transmit Pseudorandom Bit Sequence”. Refer to DIP Switch Settings earlier in this document for all settings.

Configure the local router for loopback, conduct the test, and then refer to the Module LED Indicators earlier in this document to verify errors were not received.


For Information

If You Have Questions If you have technical questions, call SciCare™ Broadband Services for assistance. Follow the menu options to speak with a service engineer. Use the following table to find the center in your area.

Region Assistance Centers Telephone and Fax Numbers

• For Technical Support, call:

Toll-free Local

1-800-722-2009 770-236-6900

• For Customer Service questions or to request an RMA number, call:

North America SciCare Broadband Services Atlanta, Georgia United States

Toll-free Local Fax

1-800-722-2009 770-236-6900 770-236-5477


Telephone Fax

32-56-445-197 32-56-445-155 32-56-445-053


Europe Belgium

Telephone Fax

32-56-445-133 32-56-445-118 32-56-445-051

Asia-Pacific Australia

Hong Kong Telephone Fax

852-2522-5059 852-2522-5624

• For Technical Support, call: Telephone Fax

55-11-3845-9154 ext 230 55-11-3845-2514


Brazil Brazil

Telephone Fax

55-11-3845-9154 ext 244 55-11-3845-2514

South America, other than Brazil

Argentina Telephone Fax

54-23-20-403340 ext 109 54-23-20-403340 ext 103


Telephone Fax

52-55-91-71-1872 52-55-91-71-1899


Mexico Central America

Mexico

Telephone Fax

52-55-91-71-1869 52-55-91-71-1899

Scientific-Atlanta, Inc. 5030 Sugarloaf Parkway, Box 465447 Lawrenceville, GA 30042770.236.5000 www.scientificatlanta.comScientific-Atlanta, the Scientific-Atlanta logo, and Prisma are registered trademarks of Scientific-Atlanta, Inc. MediaCenter, PrismaView, MediaCPE, and SciCare are trademarks of Scientific-Atlanta, Inc. All other trademarks shown are trademarks of their respective owners. Product and service availability subject to change without notice. © 2004 Scientific-Atlanta, Inc. All rights reserved. November 2004 Printed in USA Part Number 4008217 Rev B

Documents

Prisma T1/E1/J1 Media Converter Module Installation ... · 2 Prisma T1/E1/J1 Media Converter Module Installation Instructions 4008217 Rev B Overview, Continued In These Installation