Antec LaserLink LLNTR User manual
LaserLink
LLNTR
Fiber Optic Transmitter
1550nm, 5-210 MHz
INSTALLATION AND OPERATION
MANUAL
70285
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LaserLink
LLNTR
Fiber Optic Transmitter
1550nm, 5-210 MHz
INSTALLATION AND OPERATION
MANUAL
Data, drawings and other material
contained herein are proprietary to
ANTEC Network Technologies
and may not be reproduced or
duplicated in any form without the
prior written permission of
ANTEC Network Technologies.
When ordering parts from ANTEC
Network Technologies, be sure to
include the equipment model number,
equipment serial number and a
description of the part.
In all correspondence with
ANTEC Network Technologies
regarding this publication,
please refer to:
70285
First Edition – 12/98
1998 by ANTEC Network Technologies.
All rights reserved. No part of this book
may be reproduced in any form or by
any means, without permission in writing
from ANTEC Network Technologies.
(This Page Intentionally Left Blank)
70285 LLNTR Installation and Operation v
Table of Contents
Chapter 1 General Information.............................................................................................1-1
Overview..........................................................................................................................1-1
How to Contact ANTEC Network Technologies..............................................................1-2
We Welcome Your Comments..........................................................................................1-3
Safety...............................................................................................................................1-4
Equipment Description...................................................................................................1-10
Equipment Specifications................................................................................................1-13
List of Abbreviations ......................................................................................................1-15
Chapter 2 Installation............................................................................................................2-1
Overview..........................................................................................................................2-1
Section A Preparing for Installation..............................................................................2-A-1
Overview......................................................................................................................2-A-1
Unpacking....................................................................................................................2-A-2
Inspection.....................................................................................................................2-A-3
How to Return Equipment............................................................................................2-A-4
Recommended Tools and Equipment............................................................................2-A-6
Section B Installing the LLNTR....................................................................................2-B-1
Installation....................................................................................................................2-B-1
Section C Care and Cleaning of Optical Connectors....................................................2-C-1
Overview......................................................................................................................2-C-1
Cleaning.......................................................................................................................2-C-3
Continued on next page
vi LLNTR Installation and Operation 70285
Table of Contents - continued
Chapter 3 Setup and Operation............................................................................................3-1
Overview..........................................................................................................................3-1
Section A Activating the LLNTR..................................................................................3-A-1
Activation.....................................................................................................................3-A-1
Section B Controls and Indicators.................................................................................3-B-1
Overview......................................................................................................................3-B-1
Front Panel Controls and Indicators..............................................................................3-B-2
Rear Panel Connectors .................................................................................................3-B-4
Section C Status Monitoring .........................................................................................3-C-1
Overview......................................................................................................................3-C-1
User Panel....................................................................................................................3-C-2
EMIC...........................................................................................................................3-C-3
Third Party...................................................................................................................3-C-4
Section D Troubleshooting.............................................................................................3-D-1
Troubleshooting ...........................................................................................................3-D-1
70285 LLNTR Installation and Operation 1-1
Chapter 1
General Information
Overview
Introduction This manual describes installation and operation of the Laser Link
Narrowcast Return Transmitter (LLNTR).
Manual
Contents This manual contains three chapters.
•Chapter 1 - General Information
•Chapter 2 - Installation
•Chapter 3 - Setup and Operation
How to Use this
Manual This manual is divided into the chapters listed above. Major topics in each
chapter are listed at the beginning of the chapter. Use these lists to find the
desired information.
In this Chapter This chapter contains these major topics.
Topic See Page
How to Contact ANTEC Network Technologies 1-2
We Welcome Your Comments 1-3
Safety 1-4
Equipment Description 1-10
Equipment Specifications 1-13
List of Abbreviations 1-15
Chapter 1 - General Information
1-2LLNTR Installation and Operation 70285
How to Contact ANTEC Network Technologies
Overview ANTEC Network Technologies is ready to assist you as necessary.
How to Contact
ANTEC Network
Technologies
Here’s how to contact us.
In the USA . . . Outside the USA . . .
By phone, call 1-800-FIBERME and
follow the voice prompts.
By mail, write to:
ANTEC Network Technologies
Attention: Technical Service
11450 Technology Circle
Duluth, GA 30097
Contact your ANTEC Network
Technologies sales office for
assistance. Sales offices are listed on
the back cover of this manual.
Chapter 1 - General Information
70285 LLNTR Installation and Operation 1-3
We Welcome Your Comments
Overview We welcome your comments on this manual. User comments are an important
source of ideas to improve our manuals.
How to
Comment You can contact us by mail or e-mail.
By Mail . . . By E-mail:
Write to:
ANTEC Network Technologies
Attention: Technical Publications
11450 Technology Circle
Duluth, GA 30097
Send a message to:
Chapter 1 - General Information
1-4LLNTR Installation and Operation 70285
Safety
Overview Safety of personnel is the primary concern during all procedures.
This section describes typical safety considerations. All of them may not apply
to you or your installation/operation environment.
Additional
Requirements Your organization may have additional safety requirements. These
recommendations in no way supersede any safety requirements of your
organization.
Admonishments Dangers, warnings, cautions and notes appear in the text immediately before
the procedure step or other text to which they apply. Observe all these
admonishments. The table below describes each category of admonishment.
Admonishment Category Description
DANGER
DANGER refers to a situation
hazardous to personnel if the
information in the DANGER is not
observed. Possible consequences are
severe injury or death.
WARNING WARNING refers to a situation in
which customer service may be
interrupted if the WARNING is not
observed.
CAUTION CAUTION refers to a situation in
which equipment may be damaged if
the CAUTION is not observed.
NOTE NOTE highlights critical information
about a procedure or description. A
NOTE does not describe hazards to
personnel, equipment or service.
Continued on next page
Chapter 1 - General Information
70285 LLNTR Installation and Operation 1-5
Safety, Continued
Admonishment
Symbols A graphic symbol and title denote each type of admonishment. The table below
lists typical admonishments, their graphic symbol and meaning. All of these
admonishments may not be used in this manual.
Admonishment Graphic Symbol Meaning
DANGER Electrical hazard.
DANGER Laser light hazard.
DANGER Lifting object hazard.
DANGER Mechanical hazard.
DANGER Chemical Hazard
WARNING Possible interruption of
customer service.
CAUTION Possible damage to
equipment.
NOTE none Highlights critical
information. No personnel
or equipment hazards.
Continued on next page
Chapter 1 - General Information
1-6LLNTR Installation and Operation 70285
Safety, Continued
Emergency Plan Have an emergency plan. Know the procedures for obtaining first-aid and
firefighting assistance. Plan your work and maintain good housekeeping. Your
safety and the quality of the product depend on it.
Resuscitation Personnel working with or near hazardous voltages or chemicals should be
familiar with modern methods of resuscitation.
Electrical
Safety
Summary
These are general electrical safety precautions that are not related to any
specific procedure. These are recommended precautions that personnel should
understand and apply.
Electrical
Danger
DANGER
Avoid shorting circuits when using metal tools. Some
circuits have high current capability. When shorted,
these circuits will flash and may cause burns or eye
injury.
Remove all jewelry and exposed metal objects from
body and clothing before performing maintenance,
adjustments or troubleshooting. Before working inside
the equipment, remove all power unless power is
required to perform the procedure.
Failure to observe these dangers may result in death or
severe injury.
Continued on next page
Chapter 1 - General Information
70285 LLNTR Installation and Operation 1-7
Safety, Continued
Electrical Danger - continued
DANGER
Replacement of fuses or other parts must be with
identical types and ratings. Substitution of non-identical
parts may cause safety and fire hazards.
Servicing this equipment may require working with
protective covers removed and ac power connected. Use
extreme caution during these procedures.
Failure to observe these dangers may result in death or
severe injury.
Mechanical
Safety
Summary
These are general mechanical safety precautions that are not related to any
specific procedure. These are recommended precautions that personnel should
understand and apply.
Mechanical
Danger
DANGER
Overhead hazards, either because items may fall or
because personnel may strike them unintentionally, are
typical around industrial sites. Never stand underneath
anything while it is hoisted. Always wear a hard hat,
especially if someone is above you.
Failure to observe this danger may result in death or
severe injury.
Continued on next page
Chapter 1 - General Information
1-8LLNTR Installation and Operation 70285
Safety, Continued
Laser Safety
Summary These are general safety precautions associated with a class 1B laser. They are
not related to any specific procedure. These are recommended precautions that
personnel must understand and apply.
Radiation from semiconductor laser diodes feeding this detector may be
sufficiently intensive to cause almost instantaneous damage to the eye.
Consider each application hazardous until proven safe. Carefully consider
power emitted, radiation angle of divergence or confinement of radiation
within optical fibers or other physical constraints. Since the radiation is in the
non visible (infra red) portion of the spectrum, take precautions to avoid the
accidental viewing of the light source.
Laser Danger
DANGER
Laser hazard. This product contains a class 1B laser with
no safety interlocks. Under no circumstances should
connectors be viewed with equipment enabled. Direct
viewing of connectors can cause eye damage.
Failure to adhere to this danger may result in serious
injury to the eye(s) or even blindness.
Continued on next page
Chapter 1 - General Information
70285 LLNTR Installation and Operation 1-9
Safety,Continued
Labels A safety label is affixed to this equipment in plain view. The safety label is
shown below.
ANTEC Network Technologies
5720 Peachtree Parkway
Norcross, GA 30092 U.S.A
ATTENTION
Observe precautions for
handling electrostatic
sensitive devices
Invisible laser radiation -Avoid exposure to
Beam.
MAX. output power:
Wavelength:
Refer to user's manual.
This product complies with IEC 825-1, 1993
as a laser product. Class
Invisible laser radiation - Avoid direct
exposure to beam. operate only with
proper optical fiber installed in connector.
Refer to user's manual.
This product complies with 21 CFR 1040.10.
FDA - Class 1
S/N:
P/N:
Manf: Month
Assembled in
Manufacturing Site
DANGER
B
1B
9848N40000001230
Chapter 1 - General Information
1-10 LLNTR Installation and Operation 70285
Equipment Description
Overview This section contains a high-level physical and functional description of the
LLNTR.
LLNTR features are listed below:
•Front Panel Accessible Test Points Optical Output Power
(1 V dc/10mW)
RF Laser Drive Level (-30dB)
•Front Panel Accessible Controls Power on/off key switch.
Attenuation Adjust (-8 to +2 dB
min.)
•Front Panel Accessible Indicators Green/Red power LED
Green/Red optical power status
LED
Green/Red laser temperature
status LED
Green/Red laser bias status LED
Green/Red fan status LED
•Front panel mounted SC/APC connector
Physical
Description The LLNTR consists of a metal chassis and internal electrical and optical
components. The chassis installs into a Laser Link II Mainframe.
Continued on next page
Chapter 1 - General Information
70285 LLNTR Installation and Operation 1-11
Equipment Description, Continued
Diagram The diagram below illustrates the LLNTR
.
RF ATTENUATOR
ADJUST
OPTICAL POWER
(1Vdc/10mW) ON
TEST
-30dB
POWER
FAN
LASER BIAS
LASER TEMP
OPTICAL POWER
XMTR
LLNTR 15XX.XX nm
5-210 MHz
Functional
Diagram The diagram below shows how the LLNTR functions.
RF Signal
Control Laser
Laser
Monitor
Power
Supply
Attenuator Adjust
RF Input
Supply A
Supply B
Power Status Alarm
Power Status LED
Fan Status LED
General Alarm
Laser Status Alarms
Laser Status LEDs
Laser Current Monitor
Optical Power Test Point
Optical Output
RF Test Point
Continued on next page
Chapter 1 - General Information
1-12 LLNTR Installation and Operation 70285
Equipment Description, Continued
Functional
Description Refer to the LLNTR functional diagram. The RF input requires a nominal
32 dBmV/channel signal for 6 channel loading. This signal is amplified and
then passed through a variable attenuator circuit. The variable attenuator has a
range of –8 to +2 dB and is controlled by a front panel potentiometer.
The output of the attenuator is coupled to the laser board and to a calibrated
-30 dB test point mounted on the front panel. The RF signal is applied to the
laser board where it modulates the light source for transmission over the
output fiber.
The laser board consists of a DFB laser diode package. A laser monitor circuit
provides constant temperature and output power control of the diode package
over the full range of ambient temperature. This monitor circuit also provides a
calibrated 1V dc/10 mW optical power test point to the front panel, controls
the front panel optical power, laser temperature and laser bias status LEDs. It
also provides analog signals and alarms to the telemetry connector on the
Laser Link II Mainframe.
The A/B power select circuit is an integral part of the LLNTR. In the event of
a failure of the primary power supply, an optional redundant power supply
wired to the Laser Link power distribution board can provide power to the
LLNTR automatically. The POWER LED on the front panel displays power
status. During normal operation, the LED is green. It is red when the +24V A
supply (primary) has failed and power is supplied by the +24V B supply
(backup). The LED is off when the LLNTR receives no power.
The LLNTR also provides power alarms and status indicators to the Laser
Link user panel or the Element Management Interface Card (EMIC). The
Laser Link EMIC collects the vital signs signals from the modules in the Laser
Link II Mainframe and provides the communications interface between the
mainframe and the Track LinkElement Management System.
The Laser Link II Mainframe user panel receives information from the LLNTR
through the mainframe general operational alarm (GOALN). The alarm LED
on the mainframe turns red if any of the following occur: redundant power
supply is selected; optical output power drops by 25%; laser temperature is
out-of-range; laser bias is out-of-range; or fan failure.
Chapter 1 - General Information
70285 LLNTR Installation and Operation 1-13
Equipment Specifications
Overview This section describes specifications of the LLNTR.
Optical
Specifications The table below lists optical specifications.
Characteristic Specification
Output power +9 ±1 dBm
Connector return loss >65 dB SC/APC
Wavelength 1560.61 ±0.1 nm
1558.98 ±0.1 nm
1557.36 ±0.1 nm
1555.75 ±0.1 nm
1554.13 ±0.1 nm
1552.52 ±0.1 nm
1550.92 ±0.1 nm
1549.32 ±0.1 nm
RF
Specifications The table below lists RF specifications.
Characteristic Specification
Input and test point impedances 75 Ohms
Frequency range 5-210 MHz
Flatness ±0.75 dB
Input and test point return losses >14 dB
Input level +32 dBmV per channel1, 5
Level adjustment -8 to +2 dB
Test point level -30 ±1 dB6
CNR >49 dB1, 2
CSO <-48 dB1, 2
Continued on next page
Chapter 1 - General Information
1-14 LLNTR Installation and Operation 70285
Equipment Specifications, Continued
RF Specifications (continued)
Characteristic Specification
CTB <-59 dB1, 2
NPR dynamic range 15 dB for 35 MHz2, 3, 7
Crosstalk >40 dB4
Notes:
1. Six CW carriers. 7, 13, 19, 25, 31 and 37 MHz
2. Optical path 10 dB fiber, 6 dB passive. Receiver: LLDR
3. Estimated input dynamic range levels for 35 MHz noise
load: -45 to –29 dBmV/Hz
4. 8 optical channels launched into 10 dB of fiber at 7 dBm
5. Performance estimates based on 10% ±1% OMI
6. Relative to laser drive level
7. At 40 dB NPR level
Power
Specifications The table below lists power specifications.
Characteristic Specification
Input power +24 V dc provided by
Laser Link II Mainframe
Power consumption 20 W maximum
Current drain 850 mA maximum
Physical
Specifications The table below lists physical specifications.
Characteristic Specification
Operating temperature 32 to 122 ºF (0 to 50 ºC)
Relative humidity 5 to 95%, non-condensing
Optical connector SC/APC
Mounting Requires Laser Link II
Mainframe
Dimensions Height: 5.21 in (13.2 cm)
Width: 2.17 in (5.5 cm)
Depth 13.5 in (34.3 cm)
Weight 2.19 lb (1 kg)
Table of contents
