TereScope 1 Fast Ethernet Photonic Air Link Installation Guide

TereScope 1 Fast Ethernet Photonic Air Link Installation Guide
TereScope 1
Fast Ethernet Photonic Air Link
Installation Guide
MRV Communications, Inc.
URL: http://www.mrv.com
TereScope 1 Installation
ML47053, Rev. 03
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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TereScope 1 Installation
October 2004
ML47053, Rev. 03
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: ML47053
Document Revision: Rev. 03
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 Installation
ML47053, Rev. 03
October 2004
Contents
About this Guide ...............................................................................6
Purpose............................................................................................................6
Audience..........................................................................................................6
Qualifications ............................................................................................... 6
Training........................................................................................................ 6
Experience................................................................................................... 6
Authorization................................................................................................ 6
Latest Revision ...............................................................................................6
Related Documents ........................................................................................7
Acronyms ........................................................................................................7
Safety Requirements.........................................................................8
When Installing ...............................................................................................8
During Operation ............................................................................................8
Overview ............................................................................................9
Front View........................................................................................................9
Rear View.......................................................................................................10
Preparation ......................................................................................11
Pre-Installation ..............................................................................................11
Tools ..............................................................................................................11
Mounting Tools .......................................................................................... 11
TereScope 1 Tools .................................................................................... 12
Alignment Tools ......................................................................................... 12
Equipment .....................................................................................................13
TereScope 1 Transceivers......................................................................... 13
Mounting Accessories................................................................................ 13
Fiberoptic Cables....................................................................................... 15
Procedure.........................................................................................16
Step 1: Installing a Mounting Accessory ................................................... 16
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ML47053, Rev. 03
Contents
Step 2: Attaching a TereScope 1 Transceiver to a Mounting Accessory... 16
Step 3: Coarse Alignment ......................................................................... 18
Step 4: Disconnecting the Flange and Attached Duct ............................... 19
Step 5: Laying the Fiberoptic Cable .......................................................... 19
Step 6: Exposing the Fiberoptic Cable Connectors................................... 20
Step 7: Slipping the Cable through the Duct and Flange .......................... 20
Step 8: Fine Alignment.............................................................................. 21
Step 9: Connecting up the TereScope 1 Link............................................ 25
Step 10: Performing Link Connectivity Test .............................................. 28
Troubleshooting.............................................................................. 29
General.......................................................................................................... 29
Procedure ..................................................................................................... 29
Link Diagnostics Form ................................................................... 31
Figures
Figure 1: Front View of TereScope 1 Transceiver...........................................................................9
Figure 2: Rear View of TereScope 1 Transceiver .........................................................................10
Figure 3: Beam (circle) on Receiver (rectangle) after Horizontal Alignment .................................22
Figure 4: Final Beam Position after Horizontal and Vertical Alignment.........................................23
Figure 5: Interconnection of TereScope 1s and OptiSwitches ......................................................26
Figure 6: Interconnection of TereScope 1s, Media Converters, & Non-MRV Switches................27
Tables
Table 1: Tools for Mounting...........................................................................................................11
Table 2: Tools for TereScope 1 .....................................................................................................12
Table 3: Tools for Alignment..........................................................................................................12
Table 4: TereScope 1 Transceiver and Parts................................................................................13
Table 5: Mounting Accessories for the TereScope 1 Transceiver ................................................13
Table 6: Fiberoptic Cables for the TereScope 1............................................................................15
Table 7: Air Link Distance vs Minimum Required Received Signal Power ...................................24
Table 8: Troubleshooting the TereScope 1 Link Connected to MC102/Ps ...................................29
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TereScope 1 Installation
ML47053, Rev. 03
October 2004
About this Guide
Purpose
This guide is intended for the user who wishes to install the TereScope 1
Photonic Air Link.
Audience
Qualifications
Users of this guide are expected to have working knowledge of:
•
Fiberoptic Cabling
•
LAN equipment (OSI Layer 2)
Training
Installers are required to do a training course on MRV TereScopes that includes:
•
FSO 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 and FSO 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 to install the TereScope 1.
Latest Revision
The latest revision of the installation guide can be found at:
ftp.international.mrv.com/support/tech_data
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October 2004
ML47053, Rev. 03
About this Guide
Related Documents
•
Release Notes for TereScope 1 – produced if required. (This document
contains information not found in the Installation Guide and/or overriding
information.)
•
TereScope Installation Guide (Publication No. 46366)
•
TereScope 1 Photonic Air Link User Manual (Publication No. 46508)
•
OptiSwitch User Manual (Publication No. 46215)
•
MegaVision NMS User Manual (Publication No. 46654)
Acronyms
CATV
Cable Antenna TeleVision
CLI
Command Line Interpreter
FSO
Free-Space Optics
GPS
Global Positioning System
MTBF
Mean Time Between Failures
NA
Numerical Aperture
OSI
Open Systems Interconnection
PVC
PolyVinyl Chloride
RSSI
Receiver Signal Strength Indication
STP
Shielded Twisted-Pair
TELNET
(dial-up) TELephone NETwork (connection protocol)
UTP
Unshielded Twisted-Pair
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TereScope 1 Installation
ML47053, Rev. 03
October 2004
Safety
Requirements
Caution!
To reduce risk of electrical shock and fire 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
installation codes.
•
Install the TereScope 1 in a restricted location 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
Overview
ML47053, Rev. 03
Chapter 1
Overview
Front View
Figure 1 and Figure 2 describe the TereScope 1 transceiver layout pertaining to
installation.
Alignment Telescope Lens
Receive Lens
Transmit Lens
Rotary Aiming Stand
Figure 1: Front View of TereScope 1 Transceiver
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TereScope 1 Installation
October 2004
ML47053, Rev. 03
Rear View
Alignment Telescope
Fiber ST Connector
for Output to Switch
Fastening Screws for
Horizontal Fine
Alignment
Fiber ST Connector
for Input from Switch
Fastening Screws for
Vertical Fine Alignment
Alignment Bar
Fastening Screws for
Vertical Coarse
Alignment
Fastening Screws for
Horizontal Coarse
Alignment
Figure 2: Rear View of TereScope 1 Transceiver
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October 2004
Preparation
ML47053, Rev. 03
Chapter 2
Preparation
Pre-Installation
Ensure that the requirements in the chapter “Pre-Installation” in the TereScope 1
Photonic Air Link User Manual (Publication No. 46508) have been met.
Tools
Mounting Tools
Table 1: Tools for Mounting
Part Number
Description
Qty
Concrete Drill
1
3/8-inch concrete drill bit
1
Hammer (200 g to 500 g)
1
Ratchet
1
Ratchet extension
1
Ratchet bit
1
Concrete bolts (not shown!)
6
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TereScope 1 Installation
October 2004
ML47053, Rev. 03
TereScope 1 Tools
Table 2: Tools for TereScope 1
Part Number
Description
Qty
Philips screwdriver
1
Cutter
1
Exactor knife
1
8 mm open-end wrench
1
10 mm open-end wrench
1
13 mm open-end wrench
1
5 mm Allen hex wrench
1
Alignment Tools
Table 3: Tools for Alignment
Part Number
Description
Qty
MultiMode Power Meter (850 nm
wavelength)
1 (or 2 for faster alignment
with 2 technicians)
Patch Fiberoptic Cable:
400/430 µm with ST connector for
TereScope Model A
600/630 µm with ST connector for
TereScope Model C
1 (or 2 for faster alignment
with 2 technicians)
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October 2004
Preparation
ML47183, Rev. 03
Equipment
TereScope 1 Transceivers
Table 4: TereScope 1 Transceiver and Parts
Part Number
Model A: TS1/A/DST
Model C: TS1/C/DST
JMP
Description
Qty
TereScope 1 transceiver (Head,
Rotary aiming stand, Alignment
screws, and O-ring)
2 per link
Mounting Plate (JMP)
1 per TereScope 1 transceiver
8 mm Bolts
Four per Mounting Plate
Mounting Accessories
Any one of the following mounting accessories may be required for mounting the
TereScope 1 transceiver.
Table 5: Mounting Accessories for the TereScope 1 Transceiver
2) Wall Mount
(using JMP and JMB)
1) Parapet/Ledge Mount
(using JMP only)
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TereScope 1 Installation
October 2004
ML47053, Rev. 03
4) Wall Pedestal Mount
(using JMP and M054C)
3) Floor Pedestal Mount
(using JMP and M015C)
5) Extended Wall Mount
(using JMP and M062C)
Part Number
Description
Qty
JMP
Parapet/Ledge
Mount
1 per TereScope 1 transceiver
JMB
Wall Mount
2 per TereScope 1 transceiver (Option)
10 00 M015C
Floor Pedestal
Mount
1 per TereScope 1 transceiver (Option)
10 00 M054C
Wall Pedestal
Mount
1 per TereScope 1 transceiver (Option)
10 00 M062C
Extended Wall
Mount
1 per TereScope 1 transceiver (Option)
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ML47183, Rev. 03
Preparation
Fiberoptic Cables
Table 6: Fiberoptic Cables for the TereScope 1
TereScope 1 Model A Fiberoptic Cable with black
sleeve. (TereScope 1 Model C Fiberoptic Cable
has an orange sleeve.)
Part Number
TereScope 1 Model A Fiberoptic Cable – Close-up
view of the protective unshrunk portion of the black
sleeve. The Yellow cap is not supplied.
Description
FO-25/PAL/A
Model A
Qty
2 per link
Cable
Color Black
Length (max) = 50 m (164 ft)
Attenuation = 10 dB/km
Bend Radius (min. permitted) = 210 mm (8.25 in)
Transmit Fiber
Sheath Color = Yellow
Core/Cladding Diameter = 100/140 µm
Fiber Bend Radius (min. permitted) = 60 mm (21/2 in)
Receive Fiber
Sheath Color = Blue
Core/Cladding Diameter = 400/430 µm
Fiber Bend Radius (min. permitted) = 60 mm (21/2 in)
FO-25/PAL/B
Model C
Cable
Color Orange
Length (max) = 50 m (164 ft)
Attenuation = 10 dB/km
Bend Radius (min. permitted) = 210 mm (8.25 in)
Transmit Fiber
Sheath Color = Yellow
Core/Cladding Diameter = 100/140 µm
Fiber Bend Radius (min. permitted) = 120 mm (5 in)
Receive Fiber
Sheath Color = Blue
Core/Cladding Diameter = 600/630 µm
Fiber Bend Radius (min. permitted) = 120 mm (5 in)
15
2 per link
TereScope 1 Installation
ML47053, Rev. 03
October 2004
Chapter 3
Procedure
Following a step-by-step procedure for installing the TereScope 1.
Step 1: Installing a Mounting Accessory
Pre-drilled Holes in the Mounting Accessory.
Inserting Concrete Bolts.
Using the mounting tools (shown in Table 1):
1. Drill at least 6 suitable holes through the concrete base (i.e.,
parapet/ledge, wall, floor, etc., whichever is applicable) on which the
mounting accessory is to be installed.
2. Fasten the mounting accessory rigidly to the concrete base using at least
six concrete bolts.
3. Repeat Substeps 1 and 2 for each mounting accessory.
Step 2: Attaching a TereScope 1 Transceiver to a
Mounting Accessory
Mounting Accessory with Holes (encircled) for
attaching the Mounting Plate (JMP).
Fastening the Mounting Plate to the Mounting
Accessory with the four 8 mm supplied bolts
using a 13 mm open wrench (shown in Table
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October 2004
ML47183, Rev. 03
Procedure
2).
Fastening the O-Ring and Rotary Aiming Stand
to the Mounting Plate.
TereScope 1 transceiver fastened to the
Mounting Accessory.
1. Place the Mounting Plate (JMP) on the Mounting Accessory so that its four
corner holes fully overlap those of the Mounting Accessory.
2. Using a 13 mm open-end wrench (shown in Table 2) fasten the Mounting
Plate tightly to the Mounting Accessory with the supplied four 8 mm bolts.
3. Place the aluminum O-Ring (shown in Table 4) on top the Mounting Plate.
4. Place the Rotary Aiming Stand (shown in Table 4) inside the O-Ring and
on the Mounting Plate, and loosely fasten them with the four supplied
10mm bolts and washers. Do not tighten the bolts yet because the
TereScope 1 transceiver has to be rotated, as instructed in the next step
(Step 3: Coarse Alignment).
5. Repeat Substeps 1 to 4 for the other TereScope 1 transceiver.
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October 2004
ML47053, Rev. 03
Step 3: Coarse Alignment
1. Make sure that the four horizontal coarse alignment fastening bolts and
four vertical coarse alignment fastening Allen screws (shown in Table 4)
are slightly loosened.
2. To enable maximum flexibility during the fine alignment stage, rotate the
fine alignment screws until the alignment bar (shown below) is centered.
Alignment
Bar
Fine Alignment Horizontal Motion
Screws with Locking Nuts
Fine Alignment Vertical Motion
Screws with Locking Nuts
3. While looking (see note below) through the telescope, rotate and tilt the
TereScope 1 transceiver to bring the telescope crosshairs on the
telescope lens of the opposite TereScope 1 transceiver. (This assures that
the coarse alignment is correct.)
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. Using a 5 mm Allen hex wrench, tighten the four vertical coarse alignment
screws.
5. Using a 10 mm open-end wrench (shown in Table 2), tighten the four
horizontal coarse alignment bolts.
6. Repeat Substeps 1 to 5 for the other TereScope 1 transceiver.
Tightening the four Allen screws after
coarse vertical alignment.
Tightening the four 10 mm bolts after coarse
horizontal alignment.
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October 2004
ML47183, Rev. 03
Procedure
Step 4: Disconnecting the Flange and Attached Duct
Flange
Cable
Duct
Disconnecting the flange and cable duct
Disconnecting the flange and cable duct –
close-up view
Using a Philips screwdriver (shown in Table 2), loosen the four screws in order to
disconnect the flange and attached cable duct.
Step 5: Laying the Fiberoptic Cable
1. Cut off the plastic bands before
installing the cable on the roof and
building.
2. 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 damaging frictional stress.
Cutting off the plastic bands of the
fiberoptic cable.
3. 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 and
shown in Step 4: Disconnecting the
Flange and Attached Duct). 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.
4. Make sure that one end of the
fiberoptic cable reaches the
TereScope 1 transceiver and the
other end reaches the switch or
media converter to which it is to be
connected.
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TereScope 1 Installation
ML47053, Rev. 03
October 2004
Step 6: Exposing the Fiberoptic Cable Connectors
Unshrunk
sleeve
Unshrunk sleeve portion
Receive fiber
Transmit fiber
Cutting off the unshrunk sleeve.
Exposed cable fibers and connectors.
Each end of each cable is fitted with two ST type optical connectors and
protected with a heat shrink sleeve. After the fiberoptic cable has been laid.
While ensuring that no damage can be caused to the fibers of the cable, very
carefully cut off the unshrunk part of the heat shrink sleeve with scissors or an
exactor knife to expose the cable fibers and connectors.
Step 7: Slipping the Cable through the Duct and Flange
1. After cutting off the unshrunk
piece of the sleeve on the
fiberoptic cable end, hold the
cable in one hand and the duct
in the other.
2. Pointing the duct and cable
down, gently slip the cable
through the duct until the
connectors and fibers appear
through the flange. The cable
will stop slipping when the
unshrunk sleeve portion (shown
in Step 6: Exposing the
Fiberoptic Cable Connectors)
reaches the flange.
Slipping the fiberoptic cable through the duct
and flange.
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ML47183, Rev. 03
Procedure
Step 8: Fine Alignment
1. At one TereScope 1 transceiver (Site A), do one of the following:
a. Connect one end of the yellow-sheathed transmit fiber to the TX
port of an OptiSwitch EM2003-2PAL module or MC102/P media
converter. Connect the other end of the fiber to the TereScope 1
transceiver’s FROM SWITCH connector.
b. Connect a temporary light source with a 100/140 µm patch cable to
the TereScope 1 transceiver’s FROM SWITCH connector.
Note
When using the light source option, it is necessary to know its power
output level so that the receive power at the other end of the link can be
calculated.
The laser transmit output power of the EM2003-2PAL module (in the
OptiSwitch) and of the MC102/P media converter is +4 dBm for Model A
and +7 dBm for Model C. Using Table 7, make sure that the attenuation
of the link (extends between the fartherest ends of the two TereScope 1
fiberoptic cables) is smaller than the difference between the output power
at one end and the receiver sensitivity at the other end.
Connecting one end of the Transmit fiber
to the TX port.
Connecting the other end of the
Transmit fiber to the
FROM SWITCH port on the
TereScope 1 transceiver.
2. At the other TereScope 1 transceiver (Site B), use the fiberoptic patch
cable (described in Table 3) to interconnect the optical power meter and
the TereScope 1 transceiver TO SWITCH connector.
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TereScope 1 Installation
October 2004
ML47053, Rev. 03
3. Make sure that the power meter is set for 850 nm wavelength and gives
the power readings in dBm.
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 leftright direction about the TereScope1 receiver located behind the telescope
lens, as shown in Figure 3.)
Tighten the nuts lightly – do not tighten!
V1
H1
H2
V2
Figure 3: Beam (circle) on Receiver (rectangle) after Horizontal Alignment
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October 2004
ML47183, Rev. 03
Procedure
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 4.)
Figure 4: Final Beam Position after Horizontal and Vertical Alignment
The received power should be about the same as the expected power
given in Table 7, which shows expected power for various distances.
Record the maximum received power in dBm.
Note
This power reading is the sum of both signal and background light.
On a sunny day or for long air links, the background light may add significantly
to the true signal power. The problem is resolved in Substeps 8 and 9.
Note
If the power meter has a 62.5/125 µm fiber ferule, the optical readings on the
receive side will be less than expected. This is due to loss of light. Light is lost
because the core/cladding diameters of the fiberoptic cables, which are
400/430 µm or 600/630 µm, are different from the ferule’s. In such case, look
for the relative max optical power at the receiver on both side.
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TereScope 1 Installation
October 2004
ML47053, Rev. 03
Table 7: 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
6. Repeat the horizontal and then the vertical alignment to ensure maximum
reading.
7. Without moving the fine alignment screws, tighten their nuts to lock the
position.
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 Substep 5 to get the signal power. This signal power should be
close to the expected power given in .
10. Repeat Substeps 1 to 9 for the opposite direction to complete the Fine
Alignment.
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ML47183, Rev. 03
Procedure
Step 9: Connecting up the TereScope 1 Link
1. Disconnect the Power Meter and
Temporary Light Source together
with their patch cables from the two
TereScope 1 transceivers.
2. Make sure that the transmit cable
(yellow) is connected to the
TereScope 1 transceiver FROM
SWITCH connector.
3. Make sure that the receive cable
(blue) is connected to the
TereScope 1 transceiver TO SWITCH connector.
4. Refasten the flange and duct to the TereScope 1 transceiver with the four
screws.
5. Make sure that the transmit cable (yellow) is connected to the MC102/P
media converter or the EM2003-2PAL module (in the OptiSwitch) TX
connector.
6. Make sure that the receive cable (blue) is connected to the MC102/P
media converter or the EM2003-2PAL module (in the OptiSwitch) RX
connector.
At this stage, the link is fully installed and schematically should look like Figure 5
or Figure 6.
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TereScope 1 Installation
ML47053, Rev. 03
Figure 5: Interconnection of TereScope 1s and OptiSwitches
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October 2004
October 2004
ML47183, Rev. 03
Procedure
Figure 6: Interconnection of TereScope 1s, Media Converters, & Non-MRV Switches
27
TereScope 1 Installation
ML47053, Rev. 03
October 2004
Step 10: Performing Link Connectivity Test
Perform the PING test with a PC connected to the switch in order to check if the
link connectivity is OK.
On passing the ping test, the link is ready for operation.
28
October 2004
Troubleshooting
ML47183, Rev. 03
Appendix A
Troubleshooting
General
Since the TereScope 1 transceiver is a passive device, it is not affected by EMI,
RFI, power cuts, etc. Only violent physical disturbances or faulty optical power
input from the connecting switch or media converter may cause the link to
malfunction.
This means that if there is a problem, it is most likely in the peripheral equipment
to which the link is connected, i.e., in the switch or media converter and
outwards.
Troubleshooting a link connected to a switch requires working knowledge of the
switch. This appendix describes the troubleshooting procedure for the link
connected to MRV’s MC102/P media converter.
Procedure
Follow the steps in the order given until the problem is resolved. If the problem
persists, consult your MRV representative.
Table 8: Troubleshooting the TereScope 1 Link Connected to MC102/Ps
No.
Problem
Probable Cause
Corrective Action
1
All LEDs are
OFF
Power failure.
1. Check that the power cord.
2. Check the power at the wall outlet.
2
Link LED P1 L
of local
MC102/P is
OFF.
Connections at the RJ45
connectors of the local
MC102/P are faulty.
1. Ensure that the RJ45 connector of the
local MC102/P is connected.
2. Ensure that the RJ45 connector of the
remote MC102/P is connected.
3. Ensure that the Category 5 cables at
both MC102/Ps are correctly wired
(straight or cross-wired, as
appropriate).
3
Link LED P2 L
of local
MC102/P is
OFF.
Remote MC102/P is not
transmitting or TereScope 1
transceivers are not
aligned.
1. Ensure that the fiber connected to the
Rx connector of the local MC102/P is
neither disconnected nor broken.
2. Ensure that the fiber connected to the
Tx connector of the remote MC102/P
is neither disconnected nor broken.
3. With the aid of an optical power meter
(850 nm wavelength), check all cable
ends for the correct optical power
levels. If the power levels are not
correct, ensure that the TereScope 1
29
TereScope 1 Installation
No.
Problem
October 2004
ML47053, Rev. 03
Probable Cause
Corrective Action
transceivers are properly aligned.
4
5
Activity LED
P1 A or P2 A
of the local
MC102/P is
OFF.
Line Integrity
Signal LED
LIN of local
MC102/P is
ON.
Network host is not
communicating.
Test connectivity across the link (using,
for e.g., the PING utility) to determine
whether the LEDs are functioning
properly.
Light from remote MC102/P
is not being received.
1. Ensure that the fiber connected to the
Tx connector of the remote MC102/P
is:
a. Not disconnected
b. Not broken
c. Has light in it.
2. Ensure that the fiber connected to the
Rx connector of the local MC102/P is:
a. Not disconnected
b. Not broken
c. Has light emerging from it.
6
Line Integrity
Signal LED
LIN of local
MC102/P and
remote
MC102/P is
ON.
Link laser beam obstructed.
1. Ensure that the light at the Tx
connector of the local MC102/P and
remote MC102/P are ON.
2. Ensure that both fibers of the
fiberoptic cable are connected to the
Rx connector of the local MC102/P
and remote MC102/P.
3. Ensure that no physical obstacle
(object or heavy fog) is blocking the
laser beam between the two
TereScope 1 transceivers.
7
Link traffic
throughput too
low.
The configuration of one or
more devices is not correct.
1. Ensure that all network devices
connected to the link are set to either
100 Mbps full-duplex or
auto-negotiation mode.
2. At both MC102/Ps, ensure that both
toggles of the DIP switch are set to
the 100FULL (full-duplex) or AUTO
(auto-negotiation) position.
3. Remove the two non-MRV switches
and two media converters. Connect
the two ends of the TereScope 1 link
to two OptiSwitches, at EM2003-2PAL
module ports. Connect two PCs to the
OptiSwitches, at EM2003-4TP (or
EM2003-8TP) module ports. Set the
port speed to 100 full duplex and
transfer a file noting whether the
transfer time is reasonable.
30
October 2004
Link Diagnostics Form
ML47183, Rev. 03
Link Diagnostics Form
TereScope 1®
Link Diagnostics Form
City
__/___/ 03
Date
Company
Name
PAL
General Information
Link Distance
A
B
Host Network Equipment
Data
Network Device
Link Elevation angle
______º
Switch
Link east – west orientation
E__________ °
Router
Model & Type
W__________ °
Cables Information
√
E1 Equipment
Cable Length
PAL/A cable
10/100BaseT HUB
PAL/B cable
BER Tester
Pictures
Other
Supply current status pictures of the
link for both units.
Customer Switch / Router Setup
Software Type
Port Configuration
Ethernet
Physical link existence
Warehouse Storage
OptiSwitch Setup
Media Converter Setting
Dipswitch Status
Side A
Dipswitch Status
ON
Optical level
OFF
[dBm]
Side B
LED’s Status
ON
Optical level
OFF
[dBm]
Side
A
Optical level
LED’s Status
ON
OFF
[dBm]
Side B
Optical level
Dipswitch
100Full
Dipswitch
100Full
L1
L1
Dipswitch Auto
Dipswitch Auto
A1
A1
LED’s Status
ON
OFF
LED’s Status
P1 L
P1 A
P2 L
P1 L
P1 A
P2 L
P2 A
LIN
CAT 5
CAT 5
PC NIC setup
P2 A
LIN
CAT 5
CAT 5
PC NIC setup
Cross
Direct
ON
OFF
L2
L2
A2
A2
Port Config’
Port Config’
get-pal-portoptical-power
get-pal-portoptical-power
Cross
Direct
Problem description:___________________________
Please add the following:
1.
End-to-end drawing of the link network, including all network accessories.
2.
Switch/Router port setup configuration of each link end.
3.
BER test configuration (if used).
31
ON
OFF
[dBm]
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