TereScope 1 Fast Ethernet Photonic Air Link User Manual

TereScope 1 Fast Ethernet Photonic Air Link User Manual
TereScope 1
Fast Ethernet Photonic Air Link
User Manual
MRV Communications, Inc.
URL: http://www.mrv.com
TereScope 1
ML46508, Rev. 05
October 2004
Standards Compliance
This equipment is designed to comply with UL 1950; CSA 22.2 No 950; FCC Part 15 Class B; CE89/336/EEC, 73/23/EEC, IP-66.
FCC Notice
WARNING: This equipment has been designed to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference when the 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 manual, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user will be required to correct for
the interference at his own expense.
The user is cautioned that changes and modifications made to the equipment without approval of the
manufacturer could void the user’s authority to operate this equipment.
It is suggested that the user use only shielded and grounded cables when appropriate to ensure compliance
with FCC Rules.
CE Mark
The CE mark symbolizes compliance with the EMC directive of the European Community. Such marking is
indicative that the specified equipment meets or exceeds the following technical standards:
•
EN 55022 – Limits and Methods of Measurement of Radio Interference Characteristics of
Information Technology Equipment
•
EN 50081-1 – Electromagnetic compatibility of Radio Interference Characteristics of Information
Technology Equipment – Generic Emission standard Part 1: Residential commercial and light
industry environment
•
EN 50082-1 – Electromagnetic compatibility – Generic immunity standard Part 1: Residential,
commercial and light industry environment
•
EN61000-4-2 (previously IEC 1000-4-2) – Electromagnetic compatibility for industrial-process
measurement and control equipment – Part 4, Section 2: Electrostatic discharge requirements
•
EN61000-4-3 (previously IEC 1000-4-3) – Electromagnetic compatibility for industrial-process
measurement and control equipment – Part 4, Section 3: Radiated electromagnetic field
requirements
•
EN61000-4-4 (previously IEC 1000-4-4) – Electromagnetic compatibility for industrial-process
measurement and control equipment – Part 4, Section 4: Electrical fast transient/burst requirements
•
EN61000-4-5 – Electromagnetic compatibility for industrial-process measurement and control
equipment – Part 4, Section 5: Surge Immunity requirements
•
EN61000-4-6 – Electromagnetic compatibility for industrial-process measurement and control
equipment – Part 4, Section 6: Immunity to conducted disturbances induced by radio frequency
fields
•
EN61000-4-8 – Electromagnetic compatibility for industrial-process measurement and control
equipment – Part 4, Section 8: Power frequency magnetic field immunity requirements
•
EN61000-4-11 – Electromagnetic compatibility for industrial-process measurement and control
equipment – Part 4, Section 11: Voltage dips short interruptions and voltage variations immunity
requirements
•
EN61000-3-2 – Harmonic standard
•
EN61000-3-3 – Voltage Fluctuation and Flicker standard
•
CISPR 22 – Radiated and Line-conducted Class B
•
EN 60950 – ITE Safety
A ‘Declaration of Conformity’, in accordance with the above standards, has been made and is on file at
MRV ®.
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October 2004
ML46508, Rev. 05
MRV® Laser Safety Certification
The TereScope 1 is designed, built, and tested to be eyesafe, even if the output beams are viewed directly,
provided that no magnifying optics are used.
This product is Class 1 according to the American National Standard for Safe Use of Lasers ANSI Z136.11993 provided that there is no reasonable probability of accidental viewing with optics in the direct path of
the beam where the TereScope 1 is installed.
This product is Class 1M according to the International Standard of the International Electrotechnical
Commision IEC 60825-1, Amendment 2, January 2001 entitled “Safety of laser products.” The following
explanatory label is applicable to these products:
LASER RADIATION
DO NOT VIEW DIRECTLY WITH OPTICAL INSTRUMENTS
(BINOCULARS OR TELESCOPES)
CLASS 1M LASER PRODUCT
This product complies with United States FDA performance standards for laser products except for
deviations pursuant to Laser Notice No. 50 as published in June, 2001, which allows for the use of the IEC
60825-1 classification standard. Under this standard, these products are Class 1M.
A ‘Declaration of Conformity’, in accordance with the above standards, has been made and is on file at
MRV.
Disclaimer
®
MRV reserves the right to make changes to any technical specifications in order to improve reliability,
function or design.
MRV reserves the right to modify the equipment at any time and in any way it sees fit in order to improve it.
MRV provides this document without any warranty of any kind, either expressed or implied, including, but
not limited to, the implied warranties of merchantability or fitness for a particular purpose.
The user is advised to exercise due discretion in the use of the contents of this document since the user
bears sole responsibility.
Trademarks
All trademarks are the property of their respective holders.
®
TereScope
is a registered trademark of MRV Inc.
Copyright © 2003 by MRV
All rights reserved. No part of this document may be reproduced without the prior permission of MRV.
This document and the information contained herein are proprietary to MRV and are furnished to the
recipient solely for use in operating, maintaining and repairing MRV equipment. The information within may
not be utilized for any purpose except as stated herein, and may not be disclosed to third parties without
written permission from MRV.
Document Number: ML46508
Document Revision: Rev. 05
Contact Information
For customer support, you can:
•
Contact your local MRV representative
•
E-mail us at [email protected]
•
Visit our MRV Web site at http://www.mrv.com
3
Release Date: October 2004
TereScope 1
ML46508, Rev. 05
October 2004
Contents
About this Manual .............................................................................9
Purpose............................................................................................................9
Audience..........................................................................................................9
Qualifications ............................................................................................... 9
Training........................................................................................................ 9
Experience................................................................................................... 9
Authorization................................................................................................ 9
Latest Revision ...............................................................................................9
Related Documents ........................................................................................9
Acronyms ......................................................................................................10
Safety Requirements.......................................................................10
When Installing .............................................................................................10
During Operation ..........................................................................................10
Overview ..........................................................................................11
General...........................................................................................................11
Models............................................................................................................11
Advantages....................................................................................................12
Applications ..................................................................................................12
Layout ............................................................................................................13
Pre-Installation ................................................................................14
General...........................................................................................................14
Tools & Equipment .......................................................................................14
Site Survey Procedure..................................................................................15
Site Suitability ............................................................................................ 15
Line of Sight............................................................................................... 15
Range and Location................................................................................... 15
Mounting Environment & Stability .............................................................. 18
Transmitting through a Window ................................................................. 21
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Routine Checks for Adjustments ................................................................ 21
Ordering Equipment ................................................................................... 22
Installation ....................................................................................... 23
Fiberoptic Cable ........................................................................................... 23
General ...................................................................................................... 23
Handling..................................................................................................... 23
Testing ....................................................................................................... 23
Laying ........................................................................................................ 25
Preparation ................................................................................................ 25
Connection ................................................................................................. 25
Mounting ....................................................................................................... 26
Mounting Accessories ................................................................................ 26
Mounting Procedure................................................................................... 26
Special Mounting Techniques..................................................................... 27
Mounting on the Floor ................................................................................ 27
Mounting on a Fragile/Crumbly Wall .......................................................... 28
Alignment...................................................................................................... 29
General ...................................................................................................... 29
Tools and Equipment ................................................................................. 29
Procedure .................................................................................................. 30
Connecting the TereScope 1s, Media Converters, and Switches ............ 33
Link Test ....................................................................................................... 37
For OptiSwitch............................................................................................ 37
For Media Converter .................................................................................. 38
Installation Log............................................................................................. 38
Operation and Management........................................................... 39
Troubleshooting.............................................................................. 41
Appendix A: Product Specification.............................................. 42
Appendix B: Required Materials................................................... 44
Electro-Optic Modules ................................................................................. 44
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Installation Tools ..........................................................................................44
Equipment for Fiber Test and Link Alignment ...........................................44
Appendix C: Site Survey Form......................................................45
Appendix D: Cleaning Optical Connectors ..................................46
General...........................................................................................................46
Tools and Equipment....................................................................................46
Procedure ......................................................................................................46
Appendix E: Installation Log.........................................................47
Appendix F: Received Signal Power vs Distance .......................51
Appendix G: EM2003-2PAL ...........................................................52
General...........................................................................................................52
Models............................................................................................................52
Layout ............................................................................................................52
Ambient Temperature ...................................................................................53
Mounting........................................................................................................53
Removing.......................................................................................................53
Cabling...........................................................................................................53
Appendix H: MC102/P ....................................................................54
General...........................................................................................................54
Models............................................................................................................54
Layout ............................................................................................................54
Ambient Temperature ...................................................................................55
Mounting........................................................................................................56
Cabling...........................................................................................................56
Fiberoptic ................................................................................................... 56
Electrical .................................................................................................... 56
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Figures
Figure 1: Typical Application of TereScope 1 ................................................................ 13
Figure 2: Front View of TereScope 1 ............................................................................. 13
Figure 3: Rear View of TereScope 1.............................................................................. 14
Figure 4: Optimal Mounting............................................................................................ 16
Figure 5: Acceptable Mounting ...................................................................................... 17
Figure 6: Unrecommended Mounting ............................................................................ 17
Figure 7: Unacceptable Mounting .................................................................................. 18
Figure 8: Mounting Locations in Order of Preference .................................................... 19
Figure 9: Parapet/Ledge Mounting (using JMP only).................................................... 20
Figure 10: Wall Mounting (using JMP and JMB)........................................................... 20
Figure 11: Floor Pedestal Mounting (using JMP and M015C) ...................................... 20
Figure 12: Wall Pedestal Mounting (using JMP and M054C) ....................................... 20
Figure 13: Extended Wall Mounting (using JMP and M062C) ...................................... 20
Figure 14: Arrangement for Transmitting through a Window ......................................... 21
Figure 15: Light Source (left) and Optical-Power Meter (right) – Examples .................. 24
Figure 16: TereScope 1 with Mounting Plate and O-Ring ............................................ 27
Figure 17: Drawing of Vertical Mounting Brackets (JMBs) ............................................ 27
Figure 18: Mounting on a Concrete Slab ....................................................................... 28
Figure 19: Mounting on a Fragile Wall ........................................................................... 29
Figure 20: Fine Alignment Motion Screws – Rear View................................................. 30
Figure 21: Connectors for Fiberoptic Cables ................................................................. 31
Figure 22: Beam (circle) on Receiver (rectangle) after Horizontal Alignment................ 32
Figure 23: Final Beam after Horizontal and Vertical Alignment ..................................... 33
Figure 24: Flange and Fiberoptic Cable Duct ................................................................ 33
Figure 25: Extracting the Terminal Block by the Yellow Wire Loop ............................... 34
Figure 26: Extracting the Terminal Block by a Pair of Pliers.......................................... 34
Figure 27: Insertion of the Terminal Block ..................................................................... 34
Figure 28: Connection of the Wires from the TereScope 1 to the Heating Power Supply
Connector ............................................................................................................... 35
Figure 29: Interconnection of TereScope 1s and OptiSwitches..................................... 36
Figure 30: Interconnection of TereScope 1s, Media Converters, & Non-MRV Switches37
Figure 31: Conversion of Optical Signal Power Reading by CLI or MC102/P Front Panel
to dBm..................................................................................................................... 40
Figure 32: Air Link Distance vs Expected Received Signal Power ................................ 51
Figure 33: EM2003-2PAL Layout................................................................................... 52
Figure 34: MC102/P Layout ........................................................................................... 54
Figure 35: Cable Wiring ................................................................................................. 56
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Tables
Table 1: Models of TereScope 1.................................................................................... 11
Table 2: CLI Commands for TereScope 1 ..................................................................... 39
Table 3: Air Link Distance vs Minimum Required Received Signal Power .................... 51
Table 4: Ports of EM2003-2PAL .................................................................................... 52
Table 5: Front Panel LEDs of EM2003-2PAL ................................................................ 53
Table 6: DIP Switch Setting ........................................................................................... 55
Table 7: Front Panel LEDs ............................................................................................ 55
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About this Manual
Purpose
This manual is intended for the user who wishes to install, operate, manage, and
troubleshoot the TereScope 11 photonic air link.
Audience
Qualifications
Users of this manual are expected to have working knowledge of:
• Fiberoptic Cabling
•
LAN equipment (Layer 2)
Training
Installers are required to do a training course on MRV TereScopes that includes:
• IR links (site survey, installation equipment, alignment, etc.)
•
Indoors and outdoors installation
•
On-the-job-training
•
Proficiency tests
Experience
Installers are required to have experience in LAN installation and IR equipment
installation.
Authorization
When all the requirements specified above (namely, Qualifications, Training, and
Experience) have been met, the installer is required to receive authorization from
MRV certifying eligibility.
Latest Revision
The latest revision of the user manual can be found at:
ftp.international.mrv.com/support/tech_data
Related Documents
•
Release Notes for TereScope 1 – if applicable. (This document contains
information not found in the User Manual and/or overriding information.)
• TereScope Installation Guide (Publication No. 46366)
• OptiSwitch User Manual (Publication No. 46215)
• MegaVision NMS User Manual (Publication No. 46654)
1
TereScope is a trademark of MRV.
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ML46508, Rev. 05
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Acronyms
CATV
Cable Antenna TeleVision
CLI
Command Line Interpreter
GPS
Global Positioning System
IR
Infra-Red
MTBF
Mean Time Between Failures
NA
Numerical Aperture
PVC
PolyVinyl Chloride
RSSI
Receiver Signal Strength Indication
STP
TELNET
Shielded Twisted-Pair
UTP
Unshielded Twisted-Pair
(dial-up) TELephone NETwork (connection protocol)
Safety Requirements
Caution!
To reduce risk of injury and to maintain proper operation, ensure that the
safety requirements stated hereunder are met!
When Installing
•
Ensure, by visual inspection, that no part of the TereScope 1 is damaged.
•
Avoid prolonged eye contact with the laser beam.
•
Ensure that the system is installed in accordance with ANSI Z136.1
control measures (engineering, administrative, and procedural controls).
•
Ensure that the system is installed in accordance with applicable building and
installations codes.
•
Install the TereScope 1 in a restricted location as defined in this manual since
it is a Class 1M FSOCS transmitter and receiver. A restricted location is a
location where access to the transmission equipment and exposed beam is
restricted and not accessible to the general public or casual passerby.
Examples of restricted locations are: sides of buildings at sufficient heights,
restricted rooftops, and telephone poles. This definition of a restricted location
is in accordance with the proposed IEC 60825-I Part 12 requirements.
•
Avoid using controls, adjustments, or procedures other than those
specified herein as they may result in hazardous radiation exposure.
During Operation
Avoid prolonged eye contact with the laser beam.
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October 2004
ML46508, Rev. 05
Overview
General
TereScope 1 is a wireless optical communication link for transferring data over a
distance of up to 470 m (1540 ft) at 17 dB/km.
The TereScope 1 is unique in that data transmission and reception is fully optical.
Most wireless links have an interface unit for transferring data between the
transmission lines and air transciever. In the TereScope 1, optical data is directly
transferred between a special fiberoptic cable and the air, using appropriate
beam-shaping optics, without any intermediate processing electronics. This
technology eliminates all the disadvantages of electrical components (e.g.,
electric power, RFI/EMI, etc.) while providing all the inherent advantages of
optics (e.g., large bandwidth, greater reliability, higher security, etc.).
The TereScope 1 is used with a special fiberoptic cable and electro-optic module
provided by MRV. The fiberoptic cable has differing transmit and receive fibers.
The module can be a plug-in module for the OptiSwitch family of OSI Layer 2 and
3 compliant switches, or a standalone media converter switch.
The Terescope 1 has a special proprietary coating on the lenses in order to
prevent condensation effects on the lenses. As an additional safety measure
against moisture build-up on its lenses, the TereScope 1 system also includes an
optional heating element. This heating element is powered by a power supply
(supplied with the TereScope 1 system) located near the switch/media converter
via an extra-low-voltage power limiting circuit and two copper conductors
integrated into the supplied optical cable.
For convenience, it is recommended that at least the rooftop portion of the
heating installation (cabling and connections) be made so that if heating is
required, only the indoor power connection needs to be made.
Models
Two models of the TereScope 1 are available. Table 1 specifies the differences
between the models.
Table 1: Models of TereScope 1
Characteristic
Model
TS1/A/DST (Model A)
TS1/C/DST (Model C)
240 m (800 ft) at 17
dB/km
470 m (1540 ft) at 17
dB/km
Receive (at Switch) Fiber
Core/Cladding Diameters
400/430 µm
600/630 µm
Beam Divergence
6 mrad
3.65mrad
Fiber-coupled power
4 dBm
8 dBm
Link Length (max)
(Link Length =lengths of two fiberoptic cables
+ distance between the two TereScope 1s.)
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In this manual, TS1/A/DST is referred to as Model A and TS1/C/DST is referred
to as Model C.
Advantages
•
MTBF – over 10 years
•
Secure transmission
•
No electric power needed
•
No need for electrical grounding or lightning protection
•
No opto-electronic transducers needed
•
No EMI/RFI either to or from the TereScope 1.
•
Immediate deployment
•
Temporary or permanent installation
•
Installable in harsh terrain and over obstacles (rivers, highways, etc.)
•
License-free
Applications
•
Point-to-Point and Mesh network topologies
•
Last-mile connectivity
•
Cellular network
•
LAN/WAN environments
•
Fiber backup
•
Disaster recovery backup
Figure 1 shows a typical application of the TereScope 1.
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Figure 1: Typical Application of TereScope 1
Layout
Alignment Telescope Lens
Receive Lens
Transmit Lens
Support Bracket
Base
Figure 2: Front View of TereScope 1
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ML46508, Rev. 05
Alignment Telescope
Fiber ST Connector for
Output to Switch
Loop for extracting
Heater Connector
Fiber ST Connector for
Input from Switch
Fine Alignment Screws
Coarse Alignment Screws
Base
Figure 3: Rear View of TereScope 1
Pre-Installation
General
Site survey is key for finding a suitable geographical area for an optical wireless
link. A good site survey, which covers all aspects of the installation requirements,
is a pre-requisite for satisfactory link installation and operation. Accordingly, it is
important:
• To determine the optimal geographical location for the link elements.
• That customers recognize their responsibilities prior to installation.
On completion of the link design, the Site Survey Form (shown in Appendix C:
Site Survey Form) should be filled out to assure complete coverage of all
installation aspects.
Tools & Equipment
The following equipment are useful in performing a successful and accurate site
survey:
•
Rangefinder binoculars
•
Digital camera
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ML46508, Rev. 05
•
Compass
•
GPS receiver
•
3m’ tape measure.
•
Site Survey Form (shown in Appendix C: Site Survey Form)
October 2004
Site Survey Procedure
Site Suitability
1. Try to avoid East-West directions for links because even if 0.5º of the sun disk
overlaps the receiver telescope, errors may occur on a few days in a year for a
few minutes each day.
2. Choose buildings of medium height. Avoid tops of skyscrapers because of
their large sway. In suburban areas, you should choose the tallest building in
the area that is not too tall.
Line of Sight
1. Make sure that no obstacles cross the line of sight between the two
TereScope 1s.
Examples of obstacles are: Growing trees, New buildings, Crane movement,
Bridges over which tall vehicles may pass, Birds nesting, Hot surfaces (such
as metal or black roofs), Exhaust gases or dust clouds, Smoke from chimneys.
2. Photograph the line of sight view from the rooftops.
Note
It is important to photograph the view containing the line of sight from the
elevation at which you are going to mount the TereScope 1s. The
photograph can be used to: Recheck the location for details that may have
been overlooked during the survey, Show it for consultation, etc.
Range and Location
1. Referring to the data in Appendix A: Product Specification, under Operating
Range, choose and record the distance between the two TereScope 1s of the
link. (You can use any of the following equipment to determine the distance:
rangefinder laser binoculars, GPS receiver, maps, etc.)
2. Noting that the length of fiberoptic cabling (interconnecting a TereScope 1 and
OptiSwitch or Media Converter) should not exceed 50 m (164 ft), choose and
record the acceptable distance between each TereScope 1 and the OptiSwitch
(or Media Converter).
3. Noting that two TereScope 1s are required per link, record the quantity of each
model of the TereScope 1 required. Each OptiSwitch module supports up to
two links, and the OptiSwitch may support several modules depending on the
model. Accordingly, one OptiSwitch may be sufficient for connecting several
(possibly all) TereScope 1s at one end of the links provided the maximum fiber
cable length, specified in Step 2 above, is not exceeded.
4. Record the bearing to the opposite site by compass.
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ML46508, Rev. 05
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5. Record the number of links to be installed at the site.
6. Note whether additional sheltering is needed for the TereScope 1s, for e.g.,
against strong winds (120km/h or more) – see Appendix C: Site Survey Form
for details.
Figure 4 and Figure 5 show optimal and acceptable locations for the
TereScope 1 links. Notice that in both figures the TereScope 1s are mounted on
rooftop edges and high enough above the ground.
TereScope 1 mounted at corner
of leading edge of structure.
Figure 4: Optimal Mounting
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October 2004
ML46508, Rev. 05
TereScope 1 at edge of roof so
that heat rising from roof
surface does not affect beam
Beam path more than
4.5 m (15 ft) above
surface to avoid traffic
and rising heat.
Figure 5: Acceptable Mounting
Figure 6 shows an unrecommended TereScope 1 link location because of
interference by IR. Notice that the TereScope 1s are mounted far from the
rooftop edges or are too close to the ground.
Figure 7 shows an unacceptable TereScope 1 link location because of
interference by passing vehicles. Notice that the TereScope 1s are mounted far
from the rooftop edges and not high enough above the ground.
TereScope 1 not at edge of roof.
Less than 4.5 m (15 ft) between
beam path and heat-emitting
surface.
TereScope 1 not at edge of roof.
Beam path passes too close to ground. Heat rising causes
scintillation. Allow 4.5 m (15 ft) between ground and beam path.
Figure 6: Unrecommended Mounting
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Figure 7: Unacceptable Mounting
Mounting Environment & Stability
1. When deciding the mounting location, you should look on the rooftop for
vibration sources such as compressors, elevators, motors, and try to avoid
them.
2. Photograph the mounting location so as to select the best mounting
option.
Figure 8 shows mounting locations on a rooftop in descending order of
preference. Location 1 is the best; location 7 is the worst.
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Figure 8: Mounting Locations in Order of Preference
3. Avoid surfaces with high reflectivity (e.g., white walls) behind the
TereScope 1 so as to reduce interference with the optical signal.
4. Get customer approval for the exact positions where the TereScope 1s will
be mounted. Using paint, mark these positions.
5. Note the height that each TereScope 1 will be above or aside the rooftop.
6. Identify the type/quality of the floor or wall and dimensions of the location
at which the TereScope 1 is planned to be mounted.
7. For each TereScope 1, select one of the following mounting options2 and
record it.
a. Parapet/Ledge Mounting (Figure 9) – This is a standard mounting
option that uses only the Plate (JMP).
b. Wall Mounting (Figure 10) – This is a standard mounting option
that uses the Plate (JMP) as well as the two Mounting Brackets
(JMBs).
c. Floor Pedestal Mounting (Figure 11) – This is a non-standard
mounting option that uses the Plate (JMP) as well as a Floor
Pedestal (e.g., M015C).
d. Wall Pedestal Mounting (Figure 12) – This is a non-standard
mounting option that uses the Plate (JMP) as well as a Wall
Pedestal (e.g., M054C).
2
For more information on these mounting options, refer to TereScope Installation Guide
(Publication No. 46366).
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e. Extended Wall Mounting (Figure 13) – This is a non-standard
mounting option that uses the Plate (JMP) as well as an Extended
Wall (e.g., M062C).
Figure 9: Parapet/Ledge Mounting
(using JMP only)
Figure 12: Wall Pedestal Mounting
(using JMP and M054C)
Figure 10: Wall Mounting
(using JMP and JMB)
Figure 13: Extended Wall Mounting
(using JMP and M062C)
Figure 11: Floor Pedestal Mounting
(using JMP and M015C)
20
Transmitting through a Window
1. Determine the number of surfaces the beam transits or is reflected from,
the reflectivity of each surface, and condensation/precipitation collection
areas.
2. Use the data below to determine whether the light beam attenuation is
acceptable.
o 4% attenuation for each surface of light reflection.
o 15% attenuation for a double pane window.
o Attenuation due to tint in windowpane must be taken into
consideration in choosing the right TereScope 1 model. (The %
attenuation depends on the tint and must be measured.)
3. Ensure that the angle of incidence3 of the beam striking the windowpane is
between 1º and 45º, preferably closer to 1º for greater beam penetration.
Note
On high buildings, for indoor window installation, the user should consider
that occasionally the window-cleaning elevator might block the link beam.
Figure 14 shows the arrangement for transmitting through a window.
Angle A is the angle of incidence
0
1 < A < 45
0
Figure 14: Arrangement for Transmitting through a Window
Routine Checks for Adjustments
Ensure that all rooftop sites are visited about two or three weeks prior to the
installation of the system. Make sure that no changes took place, which may
3
Angle which the light beam makes with the perpendicular to the windowpane.
MRV Communications, Inc.
URL: http://www.mrv.com
TereScope 1
ML46508, Rev. 05
October 2004
have a direct effect on the planned installation. Note the relevant changes and
make sure that timely adjustments are implemented in the system, to
accommodate these changes.
Ordering Equipment
Using the results of the survey, Appendix A: Product Specification, Appendix B:
Required Materials, and Appendix C: Site Survey Form, place orders for the
required MRV equipment and materials for the installation process.
Note
For insurance, it is advisable to order a longer fiberoptic cable than that
required by measurement.
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Installation
Fiberoptic Cable
General
MRV supplies a special fiberoptic cable for carrying optical data between the
OptiSwitch (or Media Converter) and the TereScope 1. The cable contains both a
transmit fiber and a receive fiber, each of different type. The TereScope 1 has no
light source, detector, or amplifier inside. Therefore the cable plays a crucial role
in the link, as any loss in the cable translates into an equal loss in the received
signal strength.
The cable also contains two wires of gauge #20 AWG for connecting an optional
indoors heating power supply to a heating circuit in the outdoor unit.
The fiberoptic cable is an outdoor cable having two active fibers, two copper
wires of gauge #20 AWG, and one vacant sheath. The vacant sheath (together
with the active fibers) is needed to give the cable a cylindrical shape for
robustness. The cable has four connectors, two at each end, for interconnecting
a TereScope 1 and OptiSwitch (or Media Converter). Each end of the cable is
protected with a heat-shrink sleeve, part of which is shrunk around the cable end
and the portion around the connectors is left unshrunk for protection of the
connectors until they are safely connected. during the installation process. The
cable is available in various lengths. (The specification of the cable is given in
Appendix A: Product Specification.)
Handling
The fiberoptic cable should be handled with care since fiberoptic cables, in
general, are fragile. In particular,
•
Do not bend any part of the fiberoptic cable to a radius that is smaller than
the minimum permitted according to the manufacturer’s specification
(usually 210 mm or 8.25 in).
•
Do not apply physical stress that is greater than the maximum permitted
according to the manufacturer’s specification.
Caution!
Handle the fiberoptic cable and optical jumper ends with care even when
the connectors are protected.
Testing
General
Before laying the fiberoptic cables, the attenuation of each fiber should be
measured to determine if it is acceptable.
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ML46508, Rev. 05
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Tools and Equipment
The following tools and equipment are required for testing the fiberoptic cables.
•
Fiberoptic cables.
•
Optical-power meter – shown in Figure 15. (If the readings are in dBm, the
difference between the input and output power gives the power
attenuation of the fiber in dB. )
•
850 nm light source4 – shown in Figure 15.
•
100/140 µm patch jumper fiberoptic cable5 (supplied by MRV6 on
customer order).
•
ST-ST adapter.
Figure 15: Light Source (left) and Optical-Power Meter (right) – Examples
4
An OptiSwitch module or a Media Converter may be used.
5
A patch jumper cable is short, has connectors at both ends, and has negligible attenuation.
6
Instead, the following fiberoptic patch cables may be used:
For Model A: 50/125 µm or 62.5/125 µm.
For Model C: 50/125 µm. (The 62.5/125 µm patch cable is not suitable for Model C because it
introduces measurement errors.)
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TereScope 1
ML46508, Rev. 05
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Procedure
1. Connect the optical power meter to the light source with the patch cable.
Measure the power (in dBm). Disconnect the patch cable from the power
meter but leave its other end connected to the light source.
2. Connect one end of the transmit fiber (yellow-sheathed) of the fiberoptic
cable under test to the patch cable with an ST-ST adapter. Connect its
other end to the optical power meter. Measure the power (in dBm).
3. Note the difference in the two measurements in Steps 1 and 2. This is the
attenuation of the fiber in dB. Stick a label with the attenuation value on
the fiber.
4. Repeat Steps 1 to 3 for the receive fiber (blue-sheathed) of the fiberoptic
cable.
5. For each fiber, the attenuation needs to be between 0.3 dB and 1 dB,
depending on the cable length.
6. Repeat Steps 1 to 5 for all fiberoptic cables.
Laying
It is strongly recommended to run the fiberoptic cable on roofs and in buildings in
cable canals (made of PVC) and not to pull them through ducts because of the
risk of applying too much frictional stress.
For each bend of the cable at a corner, use a short piece of flexible plastic
tubular duct (the same type supplied with the TereScope 1 – see Figure 24). The
duct serves a double purpose. It ensures that no damaging stress will be applied
to the cable, and that the cable will be accessible for troubleshooting if needed.
Preparation
Each end of each cable is fitted with two ST type optical connectors and
protected with a heat shrink sleeve. After laying the fiberoptic cable, carefully cut
off the unshrunk portion of the heat shrink sleeve with scissors or an exactor
knife to reveal the cable fibers and their attached connectors and also the two
copper wires.
Note
If your TereScope 1 is Model A, do not bend the cable fiber to a
radius smaller than 60 mm (21/2 in).
If your TereScope 1 is Model C, do not bend the cable fiber to a
radius smaller than 120 mm (5 in).
Connection
The fiberoptic cables are connected after alignment is completed as described in
the section Connecting the TereScope 1s, Media Converters, and Switches.
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TereScope 1
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Mounting
This section shows how to mount the TereScope 1 and accessories at a site. For
required materials, refer to Appendix B: Required Materials.
Note
Avoid surfaces with high reflectivity (e.g., white walls) behind the
TereScope 1 so as to reduce interference with the optical signal.
Mounting Accessories
Standard
The following standard mounting accessories are available for the TereScope 1:
1. Mounting Plate (JMP) and Mounting Ring – shown in Figure 16. These are
used for mounting on a horizontal concrete surface, and are supplied with
all TereScope 1s. The Mounting Plate is always required.
2. Mounting Brackets (JMBs) – shown in Figure 17. They are used for
mounting on a vertical surface, and are supplied on customer order.
Non-Standard
These are additional accessories required for special mounting options, and are
supplied on customer order. The mounting options are shown in Figure 11,
Figure 12, and Figure 13.
Mounting Procedure
1. If you are going to use an MRV standard mount, disassemble the
mounting plate and mounting ring (shown in Figure 16) – if they are joined
to each other – from the TereScope 1.
2. Secure the mounting plate to a parapet, ledge, or an MRV mounting
bracket, possibly with additional non-standard accessories. (When
mounting the TereScope 1 on an MRV non-standard mount, do not
disassemble the mounting plate from the ring – just connect the mounting
plate with the supplied 4 x 8 mm bolts).
3. Place the TereScope 1 on the mounting plate.
4. Secure the TereScope 1 with bolts and washers, with the mounting ring
outside the bolts – see Figure 16. Do not tighten the bolts so that the
TereScope 1 can be rotated. Tighten them only after coarse alignment has
been performed as described in the section Coarse Alignment.
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TereScope 1
October 2004
ML46508, Rev. 05
Figure 16: TereScope 1 with Mounting Plate and O-Ring
dia. 8.00
4 places
4.0
260.0
0.0
0.0
45.0
45.0
93.0
93.0
170.0
170.0
247.0
260.0
13.0
34.0
a. JMB Left
247.0
260.0
0.0
dia. 8.00
4 places
13.0
34.0
b. JMB Right
Figure 17: Drawing of Vertical Mounting Brackets (JMBs)
Special Mounting Techniques
This section describes two widely used mounting options:
•
Mounting on the Floor
•
Mounting on a Fragile/Crumbly Wall
Mounting on the Floor
On roofs with a metallic parapet or without a parapet, drilling holes in the roof
floor is not recommended. In such cases, the only place where the installation is
practicable or authorized is on the floor.
The technique for mounting on such roof floors – illustrated in Figure 18 – is as
follows:
27
375.0
321.0
244.0
167.0
90.0
13.0
13.0
0.0 0.0
90.0
167.0
244.0
321.0
375.0
13.0
0.0
0.0 0.0
13.0
34.0
34.0
4.0
260.0
TereScope 1
ML46508, Rev. 05
October 2004
1. Prepare a small concrete slab (60 cm x 60 cm x 15 cm). (This slab will be
used to stabilize the pedestal7 for the TereScope 1.)
2. When the slab solidifies, secure the floor pedestal with screws passed
through holes drilled into the slab.
3. Remove any intervening extraneous material, such as asphalt, present
between the slab/tower base and the floor. After mounting is completed,
restore the roof waterproofing around the slab with appropriate sealing
material.
Floor pedestal: MO15C,
M059C, M057C, M055C,
M058C, M050C
Concrete Slab
Roof Floor
Figure 18: Mounting on a Concrete Slab
Mounting on a Fragile/Crumbly Wall
At sites where installation on fragile (pre-fab) or crumbly (old or red brick) walls is
unavoidable, the best way to securely fix the vertical mounting brackets is to use a
metallic clamping plate8. The clamping plate provides greater rigidity and stability.
The technique for mounting on such walls is illustrated in Figure 19.
7
The pedestal is supplied by MRV  on customer order.
8
The metallic clamping plate is supplied by MRV  on customer order.
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October 2004
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Fragile Wall
Clamping Plate
Figure 19: Mounting on a Fragile Wall
Alignment
General
Point-to-point connections require face-to-face orientation of both transceiving
ends of the link. With wireless optical links, the beam spot should be positioned
symmetrically on the remote receiver, as accurately as possible.
Tools and Equipment
Note
The customer can order patch cables and high-output portable source from
MRV.
The following tools and equipment are required at each link end:
•
A communication device (mobile phone or walkie-talkie)
•
850 nm fiberoptic light source with 4 to 8 dBm output power to be
launched into the 100 µm fiber. The precise output power required
depends on the cable attenuation.
•
Optical-power meter, preferably giving readings in milliwatts/microwatts
rather than in dBm.
•
Patch jumper fiberoptic cable (100/140 µm) – for the light source
•
Patch jumper fiberoptic cable (400/430 µm or 600/630 µm) – for the power
meter.
If there is no other light source available, the OptiSwitch module or Media
Converter transmitter (Tx port) may be used as the light source. The Tx port
emits rated power upon power-up. No data transmission is required.
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October 2004
ML46508, Rev. 05
Caution!
Cover the fiber output from view or turn off the light source until ready to
connect it to the link.
Procedure
The alignment procedure is done in two stages:
− Coarse Alignment
− Fine Alignment
Coarse Alignment
1. Slightly loosen the Horizontal Motion Locking Bolts and the Vertical Motion
Locking Bolts (two on each support bracket) – see Figure 16.
2. To enable maximum flexibility during the fine alignment stage, rotate the
fine alignment screws (Figure 20) until the alignment bar is centered.
3. While looking (see note below) through the telescope, rotate and tilt the
TereScope 1 to bring the telescope crosshairs on the telescope lens of the
opposite TereScope 1.
Note
The laser used in the Opto-electronic modules is Class 1M and sighting it
through the telescope from 10 m (33 ft) is not harmful. Even so, exposure
time should be minimized.
4. Tighten the four coarse alignment screws and four bolts by applying a
torque less than 20 Newton-meter.
Fine Alignment
General
The purpose of fine alignment is to position the center of the transmitted beam
spot on the center of the TereScope 1 receiver – in both directions. This is
achieved by adjusting the horizontal and vertical motion screws (shown in Figure
20) until maximum power is received at the opposite TereScope 1.
Fine Alignment Horizontal Motion
Screws with Locking Nuts
Fine Alignment Vertical Motion
Screws with Locking Nuts
Alignment
Bar
Figure 20: Fine Alignment Motion Screws – Rear View
Fine Alignment Vertical Motion Screws – Two screws. Used for fine rotation of
the TereScope 1 in the vertical plane. Both screws are required to lock a vertical
position.
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Fine Alignment Horizontal Motion Screws – Two screws. Used for fine rotation
of the TereScope 1 in the horizontal plane. Both screws are required to lock a
horizontal position.
To use any fine alignment screw, its nut must first be released.
Procedure
Note
Two installers are required for fine alignment, one at each TereScope 1
site.
The fine alignment procedure is as follows:
1. Make certain the power meter is set for 850 nm wavelength.
2. At one TereScope 1 (Site A), remove the flange and duct (shown in Figure
24). Referring to Figure 21, do either one of the following:
a. Connect one end of the yellow-sheathed cable to an OptiSwitch
module or Media Converter and the other end to the TereScope 1’s
FROM SWITCH connector, as shown in Figure 29 and Figure 30
or
b. Connect a light source with a 100/140 µm patch cable to the FROM
SWITCH connector.
3. At the other TereScope 1 (Site B), remove the flange and duct. Referring
to Figure 21, use the patch cable (400/430 µm for Model A and
600/630 µm for Model C) to interconnect the optical power meter and the
TO SWITCH connector.
TO SWITCH Connector
FROM SWITCH Connector
Figure 21: Connectors for Fiberoptic Cables
4. At Site A, turn the horizontal motion screws until the installer at Site B
reports maximum received power. (This assures that the beam spot is
positioned symmetrically in the left-right direction about the TereScope1
receiver located behind the telescope lens, as shown in Figure 22.)
Close the screws lightly – do not tighten!
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5. At Site A, turn the vertical motion screws until the installer at Site B reports
maximum received power. (This assures that the beam spot is now
positioned at the center of the TereScope1 receiver located behind the
telescope lens, as shown in Figure 23. The received power should be
about the same as the expected power given in Table 3 of Appendix F:
Received Signal Power vs Distance. Table 3 shows expected power for
various distances.) Record the maximum received power in µW.
Note
This power reading is the sum of both signal and background light.
On a sunny day, for long air links, the background light may add significantly to
the true signal power. The problem is resolved in Steps 8 and 9.
6. Repeat the horizontal and then the vertical alignment to ensure maximum
reading.
7. Tighten all the fine alignment screws and locking nuts.
8. Disconnect or turn off the light source, then measure and record the
background light power in dBm.
9. Subtract the background reading from the recorded maximum received
power in Step 5 to get the signal power. This signal power should be close
to the expected power given in Appendix F: Received Signal Power vs
Distance.
10. Repeat Steps 1 to 9 for the opposite direction.
V1
H1
H2
V2
Figure 22: Beam (circle) on Receiver (rectangle) after Horizontal Alignment
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October 2004
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V1
H1
H2
V2
Figure 23: Final Beam after Horizontal and Vertical Alignment
Connecting the TereScope 1s, Media
Converters, and Switches
1. At one of the two TereScope 1s of the link, release the flange and duct
(shown in Figure 24) by unscrewing the flange.
Figure 24: Flange and Fiberoptic Cable Duct
2. After cutting off the unshrunk portion of the sleeve on the fiberoptic cable
end, carefully slip the cable through the duct and flange.
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TereScope 1
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3. To connect the heating circuit (recommended option):
a. Extract the green pluggable terminal block from the socket in the
TereScope 1 as shown in Figure 25.
Figure 25: Extracting the Terminal Block by the Yellow Wire Loop
If the yellow wire loop is missing or slips when trying to extract it,
use a pair of pliers as shown in Figure 26.
Figure 26: Extracting the Terminal Block by a Pair of Pliers
b. Remove and trash the yellow wire loop attached to the terminal
block.
c. Strip the two copper wires and, using a screwdriver, connect them
to the two prongs of the terminal block.
d. Plug the terminal block back into the green socket in the
TereScope 1 as shown in Figure 27.
Figure 27: Insertion of the Terminal Block
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TereScope 1
ML46508, Rev. 05
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4. Connect the transmit fiber (yellow-sheathed) to the FROM SWITCH
connector, and the receive fiber (blue-sheathed) to the TO SWITCH
connector.
5. Verify that the connectors are coupled well.
6. Screw the flange back into place, making sure it is firmly tightened.
7. Repeat Steps 1 to 6 for the other TereScope 1 of the link.
8. If you have MRV9 OptiSwitches, connect the TereScope 1s as shown in
Figure 29.
If you do not have OptiSwitches, connect the TereScope 1s to switches
via MRV MC102/P as shown in Figure 30.
9. If the heater is to be used, do the following at the indoor end of the cable:
a. Strip the two copper wires of the cable.
b. Strip the two copper wires of the output of the MRV heater power
supply (15 V, cat no. 1406700).
c. Connect each power supply output wire to one cable wire using the
wire-nuts provided as shown in Figure 28.
Figure 28: Connection of the Wires from the TereScope 1 to the Heating
Power Supply Connector
d. Plug the power supply into a wall socket using a standard IEC
320/C8 (shaver and stereo style) cord (not supplied by MRV).
9
MRV Communications Inc.
35
TereScope 1
ML46508, Rev. 05
Figure 29: Interconnection of TereScope 1s and OptiSwitches
36
October 2004
TereScope 1
ML46508, Rev. 05
October 2004
Figure 30: Interconnection of TereScope 1s, Media Converters, & Non-MRV Switches
Link Test
For OptiSwitch
In the network in Figure 29, perform ping test for the remote OptiSwitch to check
if link connectivity is OK.
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TereScope 1
ML46508, Rev. 05
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For Media Converter
In the network in Figure 30, perform ping test for the remote Non-MRV switch to
check if link connectivity is OK.
Installation Log
In the Installation Log, record all the information about the installation (including
the optical power received power at the OptiSwitch. This power reading can be
obtained using the OptiSwitch CLI command get-pal-port-optical-power). For
the MC102/P, the received power reading appears at the top left hand corner on
the front panel, in the same scale as that of the Optiswitch). This information will
be a valuable reference for future maintenance and troubleshooting.
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Operation and Management
The TereScope 1 becomes fully operational as soon as it is installed.
TereScope 1 operation can be monitored through the OptiSwitch’s CLI with either
of the following management stations:
• ASCII terminal/emulator (e.g., VT100 terminal or emulator)
• TELNET station
• SNMP NMS
• Web-based NMS
For connection and setup details for ASCII terminal/emulator or TELNET station,
refer to the OptiSwitch User Manual.
For Web-based monitoring of the TereScope 1, refer to MRV MegaVision NMS
User Manual.
Table 2 lists and describes the CLI commands for the TereScope 1. These
commands are in the port-cfg menu of the OptiSwitch CLI.
Table 2: CLI Commands for TereScope 1
No.
1
Command
get-pal-portoptical-power
Description
Show the reading of the received optical signal power at the
port of the pal (TereScope 1).
[arg #100] Ports
Argument choices are:
<slot #>.<port # in slot>-<slot #>.<port # in slot>- etc
(i.e., individual ports.)
<slot #>.<port # in slot>..<slot #>.<port # in slot>
(i.e., range of ports)
Readings of the optical signal power are limited to the range 0
to 15. To determine the reading in dBm, use Figure 31.
2
set-pal-samplingrate
Set the pal (TereScope 1) optical power sampling rate.
opt.[arg #0] <Time interval in minutes>. Default: 1.
opt.[arg #1] <Time interval in seconds>. Default: 0.
Example: To set the sampling time interval to 3 minutes and 35
seconds, type set-pal-sampling-rate 3 35.
Figure 31 shows how to convert the received optical signal power reading
obtained with the CLI command get-pal-port-optical-power. The vertical axis
shows the reading and the horizontal axis shows its value in dBm. The reading is
accurate to + 1 dB.
10
# is number.
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ML46508, Rev. 05
Optical Signal Power Reading by CLI
14
12
10
8
6
4
2
0
-40
-35
-3 0
-25
-20
O p tic a l S ig n a l P o w e r in d B m
Figure 31: Conversion of Optical Signal Power Reading by CLI or MC102/P Front Panel to
dBm
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TereScope 1
ML46508, Rev. 05
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Troubleshooting
Since the TereScope 1 is a passive device, it is unaffected by EMI, RFI, power
cuts, etc. Only violent physical disturbances or faulty optical power input from the
OptiSwitch module may cause the device to malfunction.
The following procedure shows how to troubleshoot a faulty optical power input.
Follow the steps in the order given until the problem is resolved. If the problem
persists, consult your MRV representative.
1. Ensure that the fiberoptic cable at the OptiSwitch is properly connected.
2. Invoke the CLI command get-pal-port-optical-power for the OptiSwitch
module port connected to the TereScope 1. For MC102/P, check the
reading on its front panel.
If the power is too low, first make sure that there are no interferences with
the air link (e.g., fog, smoke, dust, etc.).
3. Ensure that the fiberoptic cable at the TereScope 1 is properly connected.
4. Ensure that the fiberoptic cable (connectors, etc.) is not physically
damaged.
5. Ensure that there are no unnecessary bends or pressure on the optical
cable anywhere in the building or on the roof.
6. Ensure that there is no physical damage to the TereScope 1.
7. Ensure that the optical link attenuation is less than the power budget of
the OptiSwitch module.
8. Repeat Steps 1 to 7, above, for the other TereScope 1 of the link.
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Appendix A: Product Specification
Protocol
Fast Ethernet
Link Beam
Transmitted Beam Divergence
Model A
6 milliradians
Model C
3.65 milliradians
Receiver Aperture Diameter
85 mm
Receiver Field-of-View
6 milliradians
Operating Range
Attenuation
Weather Condition
Maximum Range
Model A
Model C
17 dB/km
Moderate rain
240 m
470 m
30 dB/km
Blizzard, cloudburst
200 m
360 m
Management
MegaVision  (SNMP), TELNET, Serial/RS-232
Fiberoptic Cable
Maximum length
Up to 50 meters at each link end
Attenuation
10 dB/km
Transmit Fiber:
Sheath
Core/Cladding Diameters:
Model A
Model C
Yellow
100/140 µm
100/140 µm
Receive Fiber
Sheath
Core/Cladding Diameters:
Model A
Model C
600/630 µm
Copper Wires
2 (one black the other red), #20 AWG
Fiber Bend Radius (min. permitted)
Model A
60 mm (21/2 in)
Model C
Blue
400/430 µm
120 mm (5 in)
Cable Bend Radius (min. permitted)
210 mm (8.25 in)
Fiber Connectors
ST 
Heating System
Power supply
Use only MRV Cat. No. 1406700
15 V @ 1.0 or 1.2 A
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TereScope 1
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Class II double insulated (3000 VAC)
Class 2 power limited output
UL, cUL, TUV approved 1950 or 60950
Power supply input connector
IEC 320/C8 (2 prong shaver type)
Environmental
Temperature
Operating:
-40 to +60 °C (-40 to 140 °F)
Storage:
-40 to +60 °C (-40 to 140 °F)
Humidity (non-condensing)
Less than 90%
Housing
Weatherproof (IP-66)
Physical
Dimensions (W x H x D)
248 x 155 x 375 mm 3 (93/4 x 61/8 x 143/4 in3)
Weight (including mounting accessories)
4.5 kg (10 lb)
Torque applicable to Coarse Alignment
Screws (max)
20 Newton-meter
Standards Compliance
Media Access
IEEE 802.3u CSMA/CD
Safety
Designed to comply with UL-1950; CSA 22.2 No.
950; FCC Part 15, Class B; CE-89/336/EEC,
73/23/EEC, IEC 1M Laser safety, IP-66
Part Numbers
Model A
TereScope100/A/DST
Model C
TereScope100/C/DST
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Appendix B: Required Materials
Electro-Optic Modules
The electro-optic modules are designed to send and receive optical data through
the link. The following two types of electro-optic modules are available:
OptiSwitch Module
The OptiSwitch module is a special plug-in module for use in MRV’
OptiSwitch family of OSI Layer 2 and 3 compliant switches. For more
information, please refer to the relevant OptiSwitch manual.
Media Converter
The media converter is designed to convert between the TereScope 1
format and fiberoptic 100Base-FX (or copper 100Base-T) format. For more
information, please refer to the manuals of the media converter and your
network equipment.
Installation Tools
•
Electric drill with impact action for masonry, reversible motion, speed
control, and a 0-13 mm adjustment chuck.
•
Concrete carbide drill bits: 6 mm, 12 mm, and long (30 cm) 12 mm for
penetrating concrete walls.
•
Power screwdriver.
•
Threading equipment.
•
Toolbox containing: “Hex driver (Allen) set; open-ended wrench from
6 mm to 17 mm; hammer (200 g); regular pliers; long-nose pliers; cutter;
flat-tip screwdrivers, Philips screwdrivers; exactor knife; Socket wrench for
8 mm, 10 mm, 11 mm, 12 mm, 14 mm, ½-inch, etc.
Equipment for Fiber Test and Link Alignment
•
Fiberoptic power meter for 850 nm (e.g. of EXFO or ACTERNA).
•
Fiberoptic multi-mode light source of 850 nm wavelength for multimode
fibers (e.g. of EXFO or ACTERNA).
•
Visual fault locator.
•
Fiberoptic jumper – 1 m, 100/140 µm core/cladding diameters
•
Fiberoptic jumper – 1 m, 400/430 or 600/630 µm core/cladding diameters
44
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Appendix C: Site Survey Form
TereScope®
LINK SITE SURVEY FORM
City
Date
Street
Address
Company Name
NOTES
Line of Sight
√
Check Path for:
________/________/2004
Mounting Environment & Stability
Vibration Sources
Trees
Compressors or Motors
Growing trees
Elevators
Birds nesting
Mounting area, wall type
Power line movement
Expected minimum and maximum
temperatures
Local atmospheric disturbances
Microwave dishes
Hot surfaces
Electromagnetic interference
sources
Pedestrian or vehicle traffic
Antennas
Concrete/ red brick/ block/
Marble
Other_________
Exhaust or dust clouds
Other electronic equipment
Exhaust vents
Additional shelter requirements
Photo taken of underlying terrain
(Photo of area below line of sight)
Photo taken of mounting location
Photo taken of “line-of-sight”
Mount Placement (Best available mount placement on
building)
Photo taken of rooftop
Mounting Brackets Part # s
M001, M015C, M022C, M050C
M051C, M053C, M054C, M055C
M056C, M057C, M058C, M059C
M062C, M063C, M064C, PCL3
PCL4, PCL5, PCL6, JMP
Transmission through a Window
Elevation angle
______º
Number of window surfaces
Mounting adaptor needed
Reflective coating on window
Dimensions for adaptor
Precipitation collection areas
Power
Beam angle to window
Power Source
Main and/or UPS
Range & Location Information
Voltage & Frequency (AC)
110Vac/60Hz or 220 Vac/50Hz
Distance between sites (m)
Voltage (DC)
24 Vdc, 48 Vdc, other_________
Method used to measure distance:
(GPS, laser binoculars, maps, other)
TereScope Lightning Rod
(Recommended optional
accessory)
Yes / No
Number of links to be installed at the site
Cable Length for TS 1 PAL
25 m, 50 mother_______
Bearing to the receiving site (as measured
with compass)
E__________ °
Data Interface
W__________ °
Data Rate (Mbps)
Cabinets for Routers & Switches (if applicable)
3
Host Network Equipment
Fiber Wavelength
19" rack mount space (in U, 1U = 1 /4 in)
1Gbps, 622 Mbps, 155 Mbps, 100
Mbps, 34 Mbps, 10 Mbps, E1, T1,
4E1, other____
850 nm, 1310 nm, MM, SM
Large cabinet
Yes/No
Optical Connector
SC/PC, ST/PC, other_________
Small cabinet
Yes/No
Other connectors
RJ45, RJ48, BNC, other_______
TereScope Model Required____________________
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Appendix D: Cleaning Optical
Connectors
General
Intrusions (e.g., dust, grease, etc.) at the interface of two optical fibers, such as
at a pair of coupled connectors, attenuate the signal through the fiber.
Consequently, optical connectors must be cleaned before they are coupled with
other connectors.
Tools and Equipment
Following are tools and equipment required for cleaning connectors.
•
Dust caps
Caps for protecting the connector from intrusions. A cap is usually made
from flexible plastic. When placing a cap over a connector, avoid pressing
it against the fiber ferula surface in the connector so as to prevent
contamination.
•
Isopropyl alcohol
Solvent for contaminants.
•
Tissues
Soft multi-layered fabric made from non-recycled cellulose.
Procedure
The procedure for cleaning connectors is as follows:
1. If no stains are present, using a new clean dry tissue, gently rub, in small
circular motions, the exposed fiber surface and surrounding area in the
connector to remove dust.
2. If stains are present,
A. Moisten a new clean dry tissue with isopropyl alcohol and gently
rub, in small circular motions, the exposed fiber surface and
surrounding area in the connector to remove the stains.
B. Using a new clean dry tissue, gently rub, in small circular motions,
the exposed fiber surface and surrounding area in the connector to
remove the dissolved stains and excess isopropyl alcohol.
C. If a connector is not to be coupled with another immediately, cover
it with a dust cap.
46
TereScope 1
ML46508, Rev. 05
October 2004
Appendix E: Installation Log
E.1. Client/Dealer Information
Customer
Dealer
Company Name
Address
City
Country
Contact Person
Tel
Fax
E-mail
E.2. Application Information
Type of network
T1 ,
E1 ,
Ethernet ,
Ethernet , FDDI ,
ATM ,
Product
Evaluated distance by customer
Address of installation at Site A
Address of installation at Site B
E.3. Area Sketch
E.4. Installation
Done by
Customer representative
Date
47
Token Ring ,
Fast
Other (Specify)
TereScope 1
October 2004
ML46508, Rev. 05
Site A
Site B
Site A
Site B
System model
Serial number
Location: (Should be the
same as by site survey, if
not provide details)
Accessories: (Should be the
same as by site survey, if
not provide details)
Received
Signal
Strength
Total
Received
Power
Background
Light Power
Signal
Power
Telescope calibration :
if cannot , sketch the
telescope view
BER test
BER equipment type
Loopback location
Error type (random, burst)
Brief interruption test
E.5. System failure
Visit made by
Customer representative
Date
Sketch of telescope view
48
TereScope 1
Received
Signal
Strength
October 2004
ML46508, Rev. 05
Total Received
Power
Background
Light Power
Signal Power
Failure detail
Action items
Visit made by
Customer representative
Date
Site A
Site B
Sketch of telescope view
Digital readout
Failure detail
49
TereScope 1
ML46508, Rev. 05
Action items
50
October 2004
TereScope 1
October 2004
ML46508, Rev. 05
Appendix F: Received Signal Power
vs Distance
This table is provided to give the installer an estimate of the expected received
signal power after fine alignment. The values given apply when an OptiSwitch or
Media Converter transceiver module is used as a light source and the patch
cables are as specified in the section Tools and Equipment under Alignment.
Table 3: Air Link Distance vs Minimum Required Received Signal Power
Air Link
Distance
(m)
Received Power
for
Model A
µW
dBm
10
270
-5.7
50
32
100
Received Power
for
Model C
µW
dBm
-15
330
-4.8
8
-21
84
-10.8
150
3.6
-24.5
37
-14.3
200
2
-27
21
-16.8
240
1.4
-28.5
15
-18.4
300
9.3
-20.3
350
6.8
-21.7
400
5.2
-22.8
470
3.8
-24.2
Figure 32 shows the relation between the air link distance and expected received
power (in dB) graphically.
link distance in m
received power in dBm
0.00
-5.00
0
50
100
150
200
250
300
350
400
450
-10.00
-15.00
-20.00
-25.00
-30.00
-35.00
TS1- model C
TS1 - model A
Figure 32: Air Link Distance vs Expected Received Signal Power
51
500
TereScope 1
October 2004
ML46508, Rev. 05
Appendix G: EM2003-2PAL
General
The EM2003-2PAL is used to connect up to two TereScope 1 links to the
OptiSwitch with special fiberoptic cables provided by MRV . These fiberoptic
cables are described in Appendix A: Product Specification.
Models
Model EM2003-2PAL/A is used with TereScope 1 Model A.
Model EM2003-2PAL/C is used with TereScope 1 Model C.
Layout
Figure 33: EM2003-2PAL Layout
Captive Screws
Two captive screws for fastening the EM2003-2PAL in the OptiSwitch.
100Base-FX Ports
Table 4: Ports of EM2003-2PAL
Protocol
100Base-FX
Number of ports (TX, RX
connector pair)
Two (for two TereScope 1 links)
Connector Type
ST
Port Speed/Duplexity
100Mbps/Full-Duplex
Operating Wavelength
850 nm VCSEL
Transmitter Power
(Fiber-coupled power)
Model A:
Model C:
Receiver Sensitivity
-33 dBm
52
4 dBm
7 dBm
TereScope 1
ML46508, Rev. 05
October 2004
LEDs
Table 5: Front Panel LEDs of EM2003-2PAL
LED
L1
A1
L2
A2
Status
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Significance
Port P 1 link OK.
Port P 1 link absent or faulty.
Port P 1 activity11 present.
Port P 1 activity absent.
Port P 2 link OK.
Port P 2 link absent or faulty.
Port P 2 activity present.
Port P 2 activity absent.
Ambient Temperature
The required ambient temperature ranges for the EM2003-2PAL are as follows:
Operating: 0 to 40 °C
Storage:
-10 to +50 °C
Mounting
To mount an EM2003-2PAL, do the following:
1. Make sure that the power to the OptiSwitch is OFF.
2. Select any available slot in the OptiSwitch.
3. If a Blank Panel is covering the slot, remove it by loosening the two
screws.
4. Holding the EM2003-2PAL by the panel, place the two side edges of its
metal base in the rails of the slot. Then slide it until its panel is level with
the front panel of the OptiSwitch. (This assures that the module is properly
inserted.)
5. Fasten the EM2003-2PAL with its two captive screws (shown in Figure 33).
Removing
1. Make sure that the power to the OptiSwitch is OFF.
2. Loosen the two captive screws on the EM2003-2PAL (shown in Figure 33)
and gently pull out the EM2003-2PAL.
Cabling
The yellow-sheathed fiber of an MRV special cable is connected to a TX
connector. The blue-sheathed fiber of an MRV special cable is connected to a
RX connector. The two copper wires are for connection of the optional MRV
power supply #1406700 for heating the outdoor TereScope 1. The polarity of the
wires may be ignored when connecting the wires.
11
transmission/reception
53
TereScope 1
ML46508, Rev. 05
October 2004
Appendix H: MC102/P
General
The MC102/P is used to connect a TereScope 1 link to a non-MRV switch with
special fiberoptic cables provided by MRV . These fiberoptic cables are
described in Appendix A: Product Specification.
The MC102/P supports ordinary, VLAN, MPLS, and jumbo frames.
Models
Model MC102/P/A is used with TereScope 1 Model A.
Model MC102/P/C is used with TereScope 1 ModelC.
Layout
Figure 34: MC102/P Layout
Power Port
3-prong receptacle with universal power supply for 90-260 Vac and 60/50Hz line
(mains) power input.
100Base-TX Port P1
Protocol
100Base-TX/Full-Duplex
Connector Type
RJ45 8-pin female
Pinout (MDI-X)
1ÆTx+; 2ÆTx-; 3ÆRx+; 6ÆRx-
54
TereScope 1
October 2004
ML46508, Rev. 05
100Base-FX Port P2
Protocol
100Base-FX/Full-Duplex
Connector Type
ST
Operating Wavelength
850 nm
Transmitter Power
Model A:
ModelC:
Receiver Sensitivity
-33 dBm
4 dBm
7 dBm
Table 6: DIP Switch Setting
DIP Switch Toggles
Position
Function
Set Port P1 to operate at 100 Mbps in full-duplex mode without
LIN and with FEF12 .
Set Port P1 to operate at 100 Mbps in full-duplex mode with
LIN and without FEF.
Set Port P1 to operate at 100 Mbps in half-duplex mode
without LIN and with FEF.
Set Port P1 to operate at 100 Mbps in half-duplex mode with
LIN and without FEF.
Note
The MC102/P operates at 100 Mbps in full-duplex mode at both ports.
Accordingly, the switch port connected to Port P1 must be able to operate
at 100 Mbps and in full-duplex mode.
Table 7: Front Panel LEDs
LED
Status
P1 L
P2 L
P1 A
P2 A
LIN (for P1 and
P2)
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Significance
Port P 1 link OK.
Port P 1 link absent or faulty.
Port P 2 link OK.
Port P 2 link absent or faulty.
Port P 1 activity present.
Port P 1 activity absent.
Port P 2 activity present.
Port P 2 activity absent.
LIN functionality enabled for ports P1 and P2.
LIN functionality disabled for ports P1 and P2.
Ambient Temperature
The required ambient temperature ranges for the MC102/P are as follows:
Operating:
Storage:
12
0 to 40 °C
-10 to +50 °C
FEF is Far-End Fault protocol
55
TereScope 1
ML46508, Rev. 05
October 2004
Mounting
The MC102/P is to be mounted on a wall or desktop (flat, stable, non-conductive
static-free surface).
Cabling
Fiberoptic
The yellow-sheathed fiber of a special MRV cable is connected to the TX
connector and the blue-sheathed fiber is connected to the RX connector. The two
copper wires are for connection of the optional MRV power supply #1406700 for
heating the outdoor TereScope 1. The polarity of the wires may be ignored when
connecting the wires.
Electrical
The MC102/P’s electrical port is connected using an electrical cable with the
following specifications:
Type:
Straight-wired (for connection to a DTE, e.g., PC, etc.) or a crosswired (for connection to a DCE, e.g., switch, hub, etc.), Category 5,
STP or UTP, 2-pair – see Wiring below.
Length:
Up to 100m (330 ft)
Connector: RJ45 male 8-pin.
Wiring:
35.
The wiring of a straight- and cross-wired cable are shown in Figure
Figure 35: Cable Wiring
56
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