This document is the confidential property of Motorola, Inc. and without its prior written consent
may not be copied or released to third parties.
MOTOROLA, the stylized M Logo and all other trademarks indicated as such herein are trademarks of Motorola, Inc. rReg. U.S. Pat & Tm. Office. PTP 500 is a trademark of Motorola, Inc.
All other product or service names are the property of their respective owners.
C
2008 Motorola, Inc. All rights reserved.
http://www.motorola.com/ptp
Compliance
General
Changes or modifications not expressly approved by Motorola could void the user’s authority to
operate the system.
NOTE: This system has achieved Type Approval in various countries around the world. This
means that the system has been tested against various local technical regulations and found to
comply. The frequency bands in which the system operates is may be ‘unlicensed’ and, in these
bands, the system can be used provided it does not cause interference. Further, it is not guaranteed
protection against interference from other products and installations.
2
Page 3
The system has been tested for compliance to both US (FCC) and European (ETSI) specifications.
It has been shown to comply with the limits for emitted spurious radiation for a Class B digital
device1, pursuant to Part 15 of the FCC Rules in the USA and appropriate European ENs. These
limits have been designed to provide reasonable protection against harmful interference. However
the equipment can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to other radio communications. There is no
guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Reorient or relocate the Outdoor Unit (ODU).
• Increase the separation between the affected equipment and ODU.
• Connect the ODU/PIDU into a power outlet on a circuit different from that to which the
receiver is connected.
• Consult your installer or supplier for help.
Deployment and Operation
The Radio Regulations of various countries’ limits constrain the operation of radio products generally. In particular the local regulator may limit the amount of conducted or radiated transmitter
power and may require registration of the radio link.
The power transmitted by the PTP 500 Series Bridge is controlled by the use of Region-specific
License Keys.
The following examples show how the regulatory limits apply in some specific countries at the
current time. Operators should note that regulations are subject to change.
Contact your supplier/installer to ensure that your product is set for the correct License Key for
your Country/Region and to ensure that you have fulfilled all the local regulatory requirements,
especially if you are intending to use a link with external antennas. Notes below the tables indicate
countries where registration of the link is currently mandatory.
The system has been tested for compliance to both US (FCC) and European (ETSI) specifications.
It has been shown to comply with the limits for emitted spurious radiation for a Class B digital
device, pursuant to Part 15 of the FCC Rules in the USA and appropriate European ENs. These
limits have been designed to provide reasonable protection against harmful interference. However
the equipment can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to other radio communications. There is no
guarantee that interference will not occur in a particular installation.
1
Class B Digital Device, A digital device that is marketed for use in a residential environment notwithstanding use
in commercial, business and industrial environments.
3
Page 4
Regulations applicable to 5.4GHz PTP 500 Series Bridge variant
Examples of Regulatory Limits at 5.4GHz
FCCUnder FCC Regulations, operation of this product is only allowed with a
License Key for Region 12 (30dBm or 1W EIRP with Radar Detection)
ETSIUnder ETSI Regulations, operation of this product is only allowed with a
License Key for Region 24 (30dBm or 1W EIRP with Radar Detection)
Australia, Canada Under Australian Communications Authorities and Industry Canada
Regulations, operation of this product is only allowed with a License Key
for Region 13 (30dBm or 1W EIRP with Radar Detection and barring of
the band 5600-5650MHz)
ThailandOperation of this product is only allowed with a License Key for Region
20 (30 dBm or 1W EIRP)
KoreaOperation of this product is only allowed with a License Key for Region
21 (28 dBm EIRP (15 MHz))
General Notice Applicable to Europe
This equipment complies with the essential requirements for the EU R&E Directive
1999/5/EC.
Note:In regions other than EU/USA, specific local regulations may apply. It is the responsibility
of the installer/user to check that the equipment as deployed meets local regulatory requirements.
4
Page 5
Regulations applicable to 5.8GHz PTP 500 Series Bridge variant
Examples of Regulatory Limits at 5.8GHz
USA / Canada / Taiwan / Brazil Equipment can be operated in any mode, best results will
be obtained using Region 1 settings
ChinaOperation of this product is only allowed with a License
Key for Region 2 (33 dBm or 2W EIRP)
AustraliaOperation of this product is only allowed with a License
Key for Region 3 (36 dBm or 4W EIRP)
Hong KongUnder Hong Kong Regulations, operation of this product is
only allowed with a License Key for Region 3 (36 dBm or
4W EIRP)
UKUnder UK Regulations, operation of this product is
allowed with a License Key for Region 4 (3W EIRP with
Radar Detection)
SingaporeUnder Singapore Regulations, operation of this product is
only allowed with a License Key for Region 5 (20 dBm or
100mW EIRP)
EireUnder Eire Regulations, operation of this product is only
allowed with a License Key for Region 6 (33 dBm or 2W
EIRP. Note lower power limits in narrow bandwidths.)
KoreaUnder Korean Regulations, operation of this product is
only allowed with a License Key for Region 11 (43 dBm or
20W EIRP)
IndiaOperation of this product is only allowed with a License
Key for Region 19 (36 dBm or 4W EIRP at 15 MHz)
ThailandOperation of this product is only allowed with a License
Key for Region 20 (30 dBm or 1W EIRP)
GermanyOperation of this product is only allowed with a License
Key for Region 22 (36 dBm or 4W EIRP)
BahrainOperation of this product is only allowed with a License
Key for Region 24 (33 dBm or 2W EIRP)
5
Page 6
General Notice Applicable to Europe
This equipment complies with the essential requirements for the EU R&E Directive
1999/5/EC.
The use of 5.8GHz for Point to Point radio links is not harmonized across the EU.
However, the regulatory situation in Europe is changing and the radio spectrum may become
available in other countries in the near future. Please contact Motorola for the latest situation.
Notes:
UK Registration of Links – OfCom, The application form may be found at
http://www.ofcom.org.uk/radiocomms/isu
Eire Registration of Links – Commission for Communication Regulation, The application form
may be found at
http://www.comreg.ie/licensing_and_services
Disclaimer
The parameters quoted in this document must be specifically confirmed in writing before they
become applicable to any particular order or contract. The company reserves the right to make
alterations or amendments to the detail specification at its discretion. The publication of information in this document does not imply freedom from patent or other rights of Motorola, Inc. or
others.
This guide covers the installation, commissioning, operation and fault finding of the Motorola PTP
500 Series of Point-to-Point Wireless Ethernet Bridges.
1.1Interpreting Typeface and Other Conventions
This document employs distinctive fonts to indicate the type of information, as described in
Table 1.
FontType of Information
variable width boldSelectable option in a graphical user interface or settable
parameter in a web-based interface.
constant width regularLiteral system response in a command-line interface.
constant width italicVariable system response in a command-line interface.
constant width boldLiteral user input in a command-line interface.
constant width bold italic Variable user input in a command-line interface.
Table 1 Font types
This document employs specific imperative terminology as follows:
• Type means press the following characters.
• Enter means type the following characters and then press Enter.
• Highlight means click anywhere in a row of data to highlight the entire row.
• Select means use the mouse to click on or branch to the menu item that follows.
Use this table and the Glossary to aid in interpreting the technical acronyms used throughout this
User Guide.
15
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About This User Guide
This document also employs a set of consistently used admonitions. Each type of admonition has
a general purpose that underlies the specific information in the box. These purposes are indicated
in Table 2.
Admonition
Label
General Message
Note Informative content that may:
• Defy common or cursory logic.
• Describe a peculiarity of the 500 Series solutions implementation.
• Add a conditional caveat.
• Provide a reference.
• Explain the reason for a preceding statement or provide background for
what immediately follows.
Recommendation Suggestion for an easier, quicker, or safer action or
practice.
Informative content that may:
• Identify an indication that you should watch for.
• Advise that your action can disturb something that you may not want
disturbed.
• Reiterate something that you presumably know but should always keep in
mind.
Caution! A notice that the risk of harm to equipment or service exists.
Warning! A notice that the risk of harm to person exists.
Table 2 Admonition types
1.2Getting Additional Help
To get information or assistance as soon as possible for problems that you encounter, use the
following sequence of action:
1. Search this document, the user manuals that support the modules, and the software release
notes of supported releases:
a. In the Table of Contents for the topic.
b. In the Adobe Readerrsearch capability for keywords that apply.
2. Visit the Motorola website at http://www.motorola.com/ptp
2
Reader is a registered trademark of Adobe Systems, Incorporated.
16
2
Page 17
3. Ask your Motorola products supplier to help.
4. Gather information from affected units such as:
a. the IP addresses and MAC addresses
b. the software releases
c. the configuration of software features
d. any available diagnostic downloads
5. Escalate the problem to Motorola Technical Support as follows. You may either:
a. Send e-mail to support.ptp@motorola.com
b. Call our 24x7 Technical Support Center on +1 (0) 877 515 0400 (Worldwide) or +44 (0)
808 234 4640 (UK Customers).
For warranty assistance, contact your reseller or distributor for the process.
1.2.1Sending Feedback
We welcome your feedback on the PTP 500 Series Bridge system documentation
About This User Guide
support.ptp@motorola.com.
This includes feedback on the structure, content, accuracy, or completeness of our documents, and
any other comments you have.
17
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Avoiding Hazards
2Avoiding Hazards
2.1Preventing Overexposure to RF Energy
Caution To protect from overexposure to RF energy, install the radios for the 500 family of PTP
wireless solutions so as to provide and maintain the minimum separation distances from all persons
as shown in Table 3.
When the system is operational, avoid standing directly in front of the antenna. Strong RF fields
are present when the transmitter is on. The Outdoor Unit (ODU) must not be deployed in a
location where it is possible for people to stand or walk inadvertently in front of the antenna.
At these and greater separation distances, the power density from the RF field is below generally
accepted limits for the general population.
Note These are conservative distances that include compliance margins.
2.1.1Calculations for Separation Distances and Power Compliance Margins
Limits and guidelines for RF exposure come from:
• US FCC limits for the general population. See the FCC web site at http://www.fcc.gov,
and the policies, guidelines, and requirements in Part 1 of Title 47 of the Code of Federal
Regulations, as well as the guidelines and suggestions for evaluating compliance in FCC OET
Bulletin 65.
• Health Canada limits for the general population.
See the Health Canada web site at
• ICNIRP (International Commission on Non-Ionizing Radiation Protection) guidelines for the
general public. See the ICNIRP web site at http://www.icnirp.de/ and Guidelines for
Limiting Exposure to Time-Varying Electric, Magnetic, and Electromagnetic Fields.
The applicable power density exposure limits from the documents referenced above are:
• 6 W/m2 for RF energy in the 900-MHz frequency band in the US and Canada.
• 10 W/m2 for RF energy in the 2.4-, 5.2-, 5.4-, and 5.8-GHz frequency bands.
Peak power density in the far field of a radio frequency point source is calculated as follows:
P.G
S =
Where:-
4πd
2
(1)
S = power densityW/m
P = Maximum Average transmit power capability of the radio W
G = total Tx gain as a factor, converted from dB
d = distance from point sourcem
18
2
Page 19
Avoiding Hazards
Rearranging terms to solve for distance yields
r
P.G
d =
4πS
2.1.1.1Calculated Distances and Power Compliance Margins
power compliance margins for each frequency band and antenna combination.
(2)
Band AntennaMax
5.4
Integrated0.005
GHz
External
3ft Dish
5.8
Integrated0.32
GHz
External
2ft Flat
Plate
External
6ft Dish
Average
Transmit
Power in
Burst (Watt)
(7dBm)
0.00035
(-4.6dBm)
(25dBm)
0.32
(25dBm)
0.32
(25dBm)
(Watt)
0.00250200
0.000172884
0.16200
0.16631
0.166310
VariableD
P
GS
(23dBi)
(34.6dBi)
(23dBi)
(28dBi)
(38dbi)
(m)
(W/m2)
100.06115.9
100.06
100.524.0
100.944.5
102.83103.5
Recommended
Distance (m)
Power
Compliance
Margin
Table 3 Power Compliance Margins
Notes:
1. The regulations require that the power used for the calculations is the maximum power in the
transmit burst subject to allowance for source-based time-averaging.
2. At 5.4GHz the product is generally to a fixed EIRP which can be achieved with the Integrated
Antenna. If there are no EIRP limits, use the distance calculations for 5.8GHz.
3. At 5.8GHz, for antennas between 0.6m (2ft) and 1.8m (6ft), alter the distance proportionally
to the antenna gain
19
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Getting Started
3Getting Started
3.1For Your Safety
WARNING: Use extreme care when installing antennas near power lines.
WARNING: Use extreme care when working at heights.
WARNING: The Outdoor Unit (ODU) for the PTP 500 Series Bridge must be properly grounded
to protect against lightning. It is the user’s responsibility to install the equipment in accordance
with Section 810 of the National Electric Code, ANSI/NFPA No.70-1984 or Section 54 of the
Canadian Electrical Code. These codes describe correct installation procedures for grounding the
outdoor unit, mast, lead-in wire and discharge unit, size of grounding conductors and connection
requirements for grounding electrodes. It is recommended that installation of the outdoor unit be
contracted to a professional installer.
WARNING: The ODU for the PTP 500 Series Bridge must be grounded to a Protective Earth
in accordance with the Local Electrical Regulations.
WARNING: It is recommended that the supplied Power Indoor Plus (PIDU Plus) – PTP 500
Series is used to power the PTP 500 Series Bridge ODU. The use of other power sources may
invalidate safety approval and affect your warranty.
WARNING: When using alternate DC supplies (via the PIDU Plus DC in terminals as described
in Section 3.3.3 “Redundancy and Alternate Powering Configurations”), such as battery-backed
DC power source, the supply MUST comply with the following requirements:
• The voltage and polarity is correct and is applied to the correct terminals in the PIDU Plus
• The power source is rated as SELV
• The power source is rated to supply at least 1A continuously, and
• The power source cannot provide more than the Energy Hazard Limit as defined by IEC/EN/UL6090,
Clause 2.5, Limited Power (The Energy Hazard Limit is 240VA)
CAUTION: Users and installers should note that the main power supply is the primary disconnect
device.
CAUTION: Safety will be compromised if external quality cables are not used for connections
that will be exposed to the weather.
CAUTION: Safety will be compromised if a different power supply is used than the one supplied
by Motorola as part of the system.
3.2Welcome
Congratulations on the purchase of the PTP 500 Series Bridge from Motorola. The PTP 500
Series Bridge is the latest innovation in high-speed wireless networking that lets you deploy wireless
networks in areas previously unattainable.
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3.2.1Who Should Use This Guide?
The guide is for use by the system installer and the end user IT professional. The system installer
will require expertise in the following areas:
• Outdoor radio equipment installation
• Network configuration
• Use of web browser for system configuration, monitoring and fault finding
3.2.2Contact Information
Postal Address:Motorola, Inc.
Web Site:http://www.motorola.com/ptp
Getting Started
Unit A1, Linhay Business Park,
Eastern Road,
Ashburton,
Devon. TQ13 7UP
United Kingdom
Sales Enquiries:sales.ptp@motorola.com
Web Support:http://www.motorola.com/ptp
Email Support:support.ptp@motorola.com
All Other Enquiries:info.ptp@motorola.com
Telephone Enquiries and Global Support: +1 (0) 877 515 0400 (Toll Free in the USA) and
3.2.3Repair and Service
For unit repair or service, contact your service provider or an authorized Motorola Point-to-Point
Distributor for Return Material Authorization (RMA) and shipping instructions. Alternatively,
contact the PTP Global Technical Support Center to process an RMA.
+44 (0) 808 234 4640 (Toll Free in the Uk).
Table 4 Contact Information
21
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Getting Started
3.3Product Description
This User Manual is specifically written for the 500 family of point-to-point broadband wireless
solutions. The PTP 500 Series Bridge has been developed to provide Point-to-Point data connectivity via a 5.4 GHz or 5.8 GHz wireless Ethernet bridge operating at broadband data rates. The
PTP 500 Series Bridge is aimed at a wide range of applications. An example application is an
enterprise that has a requirement to connect together the Local Area Network (LAN) of two or
more buildings as shown in Figure 1.
Figure 1 Typical PTP 500 Series Bridge Deployment
The PTP 500 Series Bridge offers true non-line-of-sight (NLOS) operation by using a combination
of Orthogonal Frequency Division Multiplexing (OFDM) modulation and Multiple-Input MultipleOutput (MIMO) techniques. These technologies enable the PTP 500 Series Bridge to drive through
foliage and around buildings to such an extent that almost universal coverage can be expected at
short range.
A PTP 500 Series Bridge system consists of a pair of identical devices that are deployed one at
each end of the link. At installation, the user sets up one unit as the Master and the other as the
Slave. Either unit can be configured as Master or Slave.
Each end of the link consists of:
• An integrated (or connectorized - see
radio and networking electronics hereafter referred to as the Outdoor Unit (ODU).
• An indoor connection box containing a mains power supply, status indicators and network
connection port. Hereafter referred to as the Power Indoor Unit Plus (PIDU Plus).
section 13) outdoor transceiver unit containing all the
22
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Getting Started
A pair of units is normally supplied pre-configured as a link.
The network connection to a PTP 500 Series Bridge is made via a 100BaseT Ethernet connection.
Power is provided to the ODU over the 100BaseT Ethernet connection using a patented nonstandard powering technique.
Power is fed into the PTP 500 Series Bridge PIDU Plus from the mains via a standard “figure of
eight” mains plug. Connection between the ODU and PIDU Plus is made using standard CAT5e
outdoor UV resistant cable. Connection between the PIDU Plus and the Network Equipment is
made using standard CAT5e cable.
23
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3.3.1The Outdoor Unit (ODU)
The ODU is a self-contained unit. It houses both radio and networking electronics. The ODU
for the PTP 500 Series Bridge should only be deployed using the supplied PTP 500 Series Bridge
PIDU Plus. Figure 2 shows an installation example of a PTP 500 Series ODU with a Motorola
lightning protection unit (PTP-LPU).
Getting Started
Figure 2 PTP 500 Series Bridge
Outdoor Unit (ODU) with PTP-LPU
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3.3.2PIDU Plus – PTP 500 Series Bridge
The PTP 500 Series Bridge PIDU Plus is used to generate the ODU supply voltage from the
mains supply and inject this supply voltage into the 1000BaseT Ethernet connection to the ODU.
Connection uses a CAT5e cable using standard RJ45 wiring.
CAUTION: Care should be taken not to connect equipment other than an ODU for the PTP 500
Series Bridge to a PIDU Plus ODU port as equipment damage may occur. The PTP 500 Series
Bridge PIDU Plus is not interchangeable with the PTP 400 Series PIDU Plus but can be used
with the PTP 600 Series.
Getting Started
Figure 3 Power Indoor Unit
(PIDU Plus) – PTP 500 Series
The front panel contains indicators showing the status of the power and Ethernet connections.
The power indicator is illuminated when the PIDU Plus is receiving mains power.
The Ethernet indicator normally illuminates when the Ethernet link is working, flashing when
there is Ethernet activity. The fact that it lights also indicates that the ODU is powered. At
power up the LED will flash 10 times to indicate that a correct start up sequence has occurred.
See Section 10 “Fault Finding” for further fault finding information.
At the bottom of the PIDU Plus is an entry point for the PIDU Plus to ODU cable, the 100BaseT
Ethernet network port and the Recovery switch.
Figure 4 PIDU Plus Recovery Switch Location
25
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Getting Started
The Recovery switch is used to recover the unit from configuration errors or software image corruption. To put a PTP 500 Series Bridge into Recovery mode the Recovery switch should be pressed
then the power applied. The Recovery switch should be kept pressed for at least 30 seconds after
the power has been applied. Full instruction on the recovery mode can be found in Section 9
“Recovery Mode”.
A simple reboot can be performed by removing and re-applying the mains power to the PTP 500
Series Bridge PIDU Plus.
On the left hand side of the PIDU Plus, 48V DC input and output connections can be found. These
are used to power the PTP 500 Series Bridge from an external DC source or to provide a level
of power supply redundancy, as shown in Section 3.3.3 “Redundancy and Alternate Powering
Configurations”.
WARNING: When using alternate DC supplies the supply MUST comply with the following
requirements:
• The voltage and polarity is correct and is applied to the correct terminals in the PIDU Plus
• The power source is rated as SELV
• The power source is rated to supply at least 1A continuously
• The power source cannot provide more than the Energy Hazard Limit as defined by IEC/EN/UL6090,
Clause 2.5, Limited Power (The Energy Hazard Limit is 240VA)
Also on the left hand side of the PTP 500 Series Bridge PIDU Plus, connectors and jumpers can
be found that allow the remote connection of power LED, Ethernet LED and Recovery switch.
The connection instructions can be found in Section 3.3.4 “Remote LEDs and Recovery Switch”.
The input supply range for the 500 Series PIDU Plus is 90V-264V AC, 47-63Hz. Mains connection
to the PIDU Plus is made using a standard “figure of eight” mains lead as shown in Figure 5.
Figure 5 PTP 500 Series Bridge PIDU
Plus Power Input
26
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Getting Started
3.3.3Redundancy and Alternate Powering Configurations
NOTE: The use of DC supplies of less than 55v will reduce the usable distance between the PIDU
Plus and ODU see Figure 6.
CAUTION: The maximum distance from the ODU to the connected network equipment is 100m
(330 ft) when using 100BaseT.
3.3.3.1External DC Supply Only
For use where there is no mains supply.
Figure 6 PTP 500 Series Bridge PIDU
Plus to ODU Cable Length Graph
Figure 7 External DC Supply Only
27
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3.3.3.2External DC Supply and AC Supply
To give redundancy through the use of mains and DC supply.
Figure 8 External DC Supply and AC Supply
Getting Started
3.3.3.3External DC Supply and Redundant AC Supply
To guard against mains failure, DC supply failure of PTP 500 Series Bridge PIDU Plus failure.
Figure 9 External DC Supply and Redundant AC Supply
28
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3.3.4Remote LEDs and Recovery Switch
The PTP 500 Series Bridge PIDU Plus provides a facility to connect remote LEDs and Recovery
switch allowing the PIDU Plus to be mounted inside an enclosure. At the left hand end of the PIDU
Plus under the ODU connection cover can be found a PCB header and three jumpers. Jumpers
J906 and J907 should be removed and connection to the remote LEDs and Recovery switch made
to J908 as shown in Figure 10.
Getting Started
Figure 10 Remote LED and Recovery Switch Wiring
3.3.5Cables and connectors
The cable used to connect the PTP 500 Series Bridge PIDU Plus to the ODU can be any standard
CAT5e type provided that it is suitable for outdoor deployment. Motorola recommends that cables
to the specification below be used:
Cable:Superior Essex BBDGE CAT 5e
Connector Type:Tyco, 5-558530-1
Gland:Motorola WB1811
29
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Caution: Failure to use the recommended (or equivalent) standard of cable may invalidate the
system’s safety certification.
The cable used to connect the PTP 500 Series Bridge PIDU Plus to the users Network Equipment
can be any standard CAT5e Cable.
The PIDU Plus to ODU and the PIDU Plus to Network Equipment cables may be unscreened
(UTP) or screened (STP). However, unscreened cables reduce the system’s ability to cope with
nearby lightning strikes. If lightning activity is common in the area of deployment, the use of
screened cable is highly recommended. See Section 11 “Lightning Protection”.
The PIDU Plus provides screen continuity between the ODU and Network Equipment connections.
Note:The ODU network connection implements automatic MDI/MDI-X sensing and pair swapping
allowing connection to networking equipment that require cross-over cables (MDI-X networks) or
straight-through cables (MDI Networks).
3.3.6PTP and Lightning Protection
The PTP 500 Series Bridge PIDU Plus meets the low level static discharge specifications identified
in Section 17 “Specifications”, but does not provide lightning or surge suppression. Installations
will generally require lightning or surge suppression, a separate Ethernet surge suppressor must
be used and appropriately earthed. Suitable surge suppressors can be sourced from your Motorola
Point-to-Point Distributor or Solutions Provider. See Section 11 “Lightning Protection”.
Getting Started
3.3.7Mounting Brackets
The PTP 500 Series Bridge is supplied with a mounting bracket suitable for mounting the ODU
to a pole of 50mm (2”) to 75mm (3”) in diameter. For more details on mounting, see Section 7
“Installation”.
The bracket allows for adjustment in both azimuth and elevation. The bracket may be split
allowing the pole mount section of the bracket to be mounted to the pole first. This allows the
installer to take the weight of the unit and secure it, one handed, with a single mounting bolt.
The PIDU Plus can either be desk or wall mounted. The preference is wall mounted with the
cables dressed to a cable channel. Wall mounting is achieved by screwing through the mounting
lugs on either side of the unit. Remember to leave space for access to the Recovery button. See
Section 3.3.2 “PIDU Plus – PTP 500 Series Bridge”.
3.3.8Configuration and Management
Configuration and Management of the PTP 500 Series Bridge is implemented using an inbuilt web
server hosting a number of Configuration and Management web pages. This approach allows Configuration and Management to be carried out on any standard web browsing technology. The PTP
500 Series Bridge can also be managed remotely using the SNMP management protocol. Connection to the bridge is via the Ethernet connection carrying the bridge network traffic. Connection
to the unit is via a preset IP address. This address can be changed via the Network Interface
Configuration web page. A full explanation of the available web pages and their use can be found
in Section 8 “Web Page Reference”.
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Getting Started
3.4Warranty
Motorola’s standard hardware warranty is for one (1) year from date of shipment from Motorola
or a Motorola Point-to-Point Distributor. Motorola warrants that hardware will conform to the
current relevant published specifications and will be free from material defects in material and
workmanship under normal use and service. Motorola shall within this time, at its own option,
either repair or replace the defective product within thirty (30) days of receipt of the defective
product. Repaired or replaced product will be subject to the original warranty period but not less
than thirty (30) days.
Motorola warranty for software is described in details in
License Agreement”.
Section 16.5.1 “Motorola Inc. End User
31
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Product Architecture
4Product Architecture
The PTP 500 Series Bridge consists of an identical pair of units deployed one at each end of the
link. The radio link operates on a single frequency channel in each direction using Time Division
Duplex (TDD). One unit is deployed as a master and the other as a slave. The master unit takes
responsibility for controlling the link in both directions. The non-line-of-sight (NLOS) aspects of
the product are provided by Multiple-Input Multiple-Output (MIMO), coupled with Orthogonal
Frequency Division Multiplexing (OFDM) modulation.
The PTP 500 Series Bridge has been developed to operate within license exempt frequency bands.
The current product range supports:
• ETSI 5.4 GHz band B (5.470-5.725 GHz)
• ETSI 5.8 GHz band C (5.725-5.850 GHz) and the USA 5 GHz ISM band (5.725-5.850 GHz)
The PTP 500 Series Bridge has been designed to coexist with other users of the band in an
optimal fashion using a combination of Transmit Power Control (TPC), Spectrum Management
functionality and Antenna beam shape.
In order to maintain link availability, the product employs adaptive modulation techniques that
dynamically reduce the data rate in severe or adverse conditions. The PTP 500 series provides
wireless Ethernet bridging between two fixed locations. To be more precise, it forwards Ethernet
frames as a two-port transparent heterogeneous encapsulation bridge, meaning that each bridge
forwards frames between two dissimilar interfaces (Ethernet and wireless), encapsulating Ethernet
MAC frames within a PTP MAC frames for transmission at the wireless interface. A link consisting
of a pair of back to back bridges appears to the data network to be very similar to a standard
two-port Ethernet bridge.
The PTP500 series provides two egress queues in each direction, classifying Ethernet frames into
one of the two prioritised queues based on inspection of the user priority field (802.1p) in the
IEEE802.1Q VLAN tag. Untagged frames receive a default priority. The queuing method is
strict priority. The bridge does not implement any VLAN functions for bridged frames apart from
inspection of the priority field, and consequently the bridge forwards tagged and untagged Ethernet
frames regardless of VLAN ID and without modification of any protocol header fields..
The management function of the PTP 500 Series Bridge is logically equivalent to a separate protocol
stack with virtual point of attachment at the Ethernet interface. This is illustrated in Figure 11.
32
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Product Architecture
Figure 11 PTP 500 Series Bridge Layer Diagram
Each unit in the link is manageable through an IP connection. Standard IP protocols are utilized
for all management functions e.g., HP, SNMP, etc. The unit can be configured to use VLAN tags
on the management interfaces.
The PTP 500 Series Bridge is fully software upgradeable. New software images are first downloaded
from the Motorola website http://www.motorola.com/ptp to a convenient computer. The
image is then uploaded to the ODU via the web management page described in Section 8.3.6
“Software Upgrade”. The compressed image is first loaded into RAM and check-summed. If the
compressed image transfer has completed successfully the image is decompressed and written to
flash memory. On completion of this process the unit can be rebooted to use the newly uploaded
image. Should this process fail, the unit will revert to a protected compressed image installed
during manufacturing to allow the unit to be recovered.
33
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General Considerations
5General Considerations
5.1Spectrum Planning
The PTP 500 Series Bridge has four frequency variants in its product range.
BandDefinitionFrequency
Coverage
5.4 GHz ETSI 5 GHz band B, USA UNII
Band
5.8 GHz USA ISM Band / ETSI 5 GHz
band C
Table 5 PTP 500 Series Bridge Variants
Note: for 5.4 GHz and 5.8 GHz, use of the product is allowed according to local regulations.
There are two distinct approaches to spectrum planning:
• First an operator can utilize the default spectrum management mode i-DFS (intelligent Dynamic Frequency Selection). This mode uses the PTP 500 Series Bridge ability to measure the
interference levels in all channels to build up a picture of the interference / noise levels in all
channels. The PTP 500 Series Bridge uses statistical techniques to select the most appropriate transmit and receive channels. i-DFS can be influenced in its channel decision process by
selectively barring channels from use. The use of this functionality is described in detail in
Section 8.3.7 “Spectrum Management”.
• Second, when detailed control of the spectrum allocation is required, it is recommended that
the fixed frequency mode is used to statically allocate transmit and receive channels.
5470-5725 MHz 15 MHz5 MHz
5725-5850 MHz 15 MHz5 MHz
Variable Channel
Width
Channel
Raster
34
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General Considerations
5.2Region Codes
The PTP 500 Series Bridge uses a system of Region Codes to control the operation of the radio
link. The Region Code is set by a License Key.
Caution: To meet the regulatory requirements of your region you should set the correct Region
Code by obtaining a new License Key from your reseller or distributor.
Region
Code
15.8 GHzFCC Compliant (e.g.
25.8 GHzChina10 dBm 33 dBm
35.8 GHzAustralia, Hong
45.8 GHzUK12 dBm 35 dBmRadar Avoidance
Frequency
Band
Regulatory Body
or
Countries
USA, Canada,
Taiwan, Brazil)
Kong
Max
Tx
Power
25 dBm NoneReduced TX Power
13 dBm 36 dBm
EIRP
Limit
Operational
Restrictions (see
Section 5.3
“Operational
Restrictions”)
at Band Edges see
Section 5.6.2 “5.8
GHz Transmit Power
Reduction at the
Band Edges”
Enabled and RTTT
(Road Transport and
Traffic Telematics,
5795 to 5815 MHz
channels cannot be
used)
55.8 GHzSingapore-3 dBm20 dBm
65.8 GHzEire10 dBm 33 dBm
75.4/5.8 GHzUnregulated DFS
and RTTT
85.4 / 5.8 GHz Unregulated Internal
Use
25 dBm NoneRadar Avoidance
25 dBm None
35
Enabled and RTTT
(Road Transport and
Traffic Telematics,
5795 to 5815 MHz
channels cannot be
used)
Enabled Weather;
Radar Band (5600 to
5650 MHz) barred
162.5 GHzUSA23 dBm >=63 dBm Licensed Band
operation. Note
Power reduction in
the Upper Band.
182.5 GHzTaiwan23 dBmChannel 2590 MHz
should not be used
because of in-band
interference.
195.8 GHzIndia13 dBm 36 dBm5.825 MHz to 5.850
MHz Only
205.4 / 5.8 GHz Thailand7 dBm30 dBmFixed Power for all
bandwidths.
215.4 GHzKorea5 dBm28 dBmMaximum Channel
Bandwidth 20 MHz.
5470 MHz to 5650
MHz only.
225.8 GHzGermany12 dBm 35 dBm5755 MHz to 5850
MHz only.
234.5 GHzMilitary25 dBm None
245.8 GHzBahrain20 dBm 33 dBm
265.4 GHzETSI7 dBm30 dBmRadar Avoidance
Enabled Weather;
Radar Band (5600 to
5650 MHz) barred
36
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General Considerations
Note: For Region Code 16, the EIRP limit is approximately 63 dBm + 10 x Log(360/Antenna
Azimuth BW.
When shipped from the factory units3are configured as follows:
• PTP 500 Series Bridge 5.4 GHz – Region Code 26
• PTP 500 Series Bridge 5.8 GHz – Region Code 1
5.3Operational Restrictions
5.3.1Radar Avoidance
Radar Avoidance requires that equipment used in the region:
• Detects interference from other systems and avoids co-channel operation with these systems,
notably radar systems.
• Provide on aggregate a uniform loading of the spectrum across all devices, i.e. Fixed Frequency
operation is not allowed.
• Radar avoidance is not applicable to the PTP54600 product.
To address the primary aims the Spectrum Management algorithm implements a radar detection
function which looks for impulsive interference on the active channel only. If impulsive interference
is detected Spectrum Management will mark the current active channel as having detected radar
and initiate a channel hop to an available channel. The previous active channel will remain in the
radar detected state for thirty minutes after the last impulsive interference pulse was detected.
After the thirty minutes have expired the channel will be returned to the available channel pool.
The radar detection algorithm will always scan the active channel for 60 seconds for radar interference before using the channel. This compulsory channel scan will mean that there is a 60 seconds
service outage every time radar is detected and that the installation time is extended by 60 seconds
even if there is found to be no radar on the channel.
4
NOTE: On system installation or start-up this extends the initial scan time of the Master unit
by 60 seconds. To address the “provide aggregate uniform loading of the spectrum across all
devices” requirement, the channel selection algorithm will choose a channel at random from a list
of available channels. The channel selection algorithm is initiated at link initialization and when
radar interference is detected.
3
Note that 5.4 GHz and 5.8 GHz are different products.
4
Note that the Quickstart Guide also contains the license keys for region 12 and 13.
37
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General Considerations
Band Edge
5725 MHz
Band Edge
5850 MHz
Default
5735MHz
5735
5740
5745
5750
5755
5760
5765
5770
5775
5780
5785
5790
5795
5800
5805
5810
5815
5820
5825
5830
5835
5840
5736MHz
5736
5741
5746
5751
5756
5761
5766
5771
5776
5781
5786
5791
5796
5801
5806
5811
5816
5821
5826
5831
5836
5841
5737MHz
5737
5742
5747
5752
5757
5762
5767
5772
5777
5782
5787
5792
5797
5802
5807
5812
5817
5822
5827
5832
5837
5842
5738MHz
5738
5743
5748
5753
5758
5763
5768
5773
5778
5783
5788
5793
5798
5803
5808
5813
5818
5823
5828
5833
5838
5739MHz
5739
5744
5749
5754
5759
5764
5769
5774
5779
5784
5789
5794
5799
5804
5809
5814
5819
5824
5829
5834
5839
Lower Center
Frequency
5.3.2RTTT Avoidance and Other Channel Use Restrictions
Where regulatory restrictions apply to certain channels these channels are barred. The user should
note that the number of channels barred is dependent on the channel raster selected. For example
see the effect of the UK RTTT channel restrictions in Figure 12. Barred channels are indicated
by a “No Entry” symbol displayed on the “Spectrum Management” web page, see Section 8.3.9
“Spectrum Management Control - With Operational Restrictions”.
NOTE: “Radar Avoidance Enabled” is only valid with 30 MHz channel bandwidth.
Figure 12 5.8 GHz UK RTTT Channel
Avoidance – 15 MHz Channel Bandwidth Only
5.3.3Radar Avoidance, i-DFS and Variable (Narrow) Bandwidth Operation
Radar avoidance at 5.8 GHz is applicable to EU operation and the requirements are currently as
defined in EN 302 502 v1.1.1
5.4Variable Channel Bandwidth Operation
Channel bandwidth of 15 MHz5is supported for Only Full versions of the PTP 500.
Configuration of the variable bandwidth operation must be symmetric, i.e. the Transmit and
receive channels must use identical channel bandwidths.
5
15MHz channel widths are available where allowed by local regulations and subject to some restrictions on channel
choice.
38
Page 39
General Considerations
Band Edge
5470 MHz
Band Edge
5725 MHz
Default
5480MHz
5480
5485
5490
5495
5500
5505
5510
5515
5520
5525
5530
5535
5540
5545
5550
5555
5560
5565
5570
5575
5580
5585
5590
5595
5600
5605
5610
5615
5620
5625
5630
5635
5640
5645
5650
5655
5660
5665
5670
5675
5680
5685
5690
5695
5700
5705
5710
5715
5481MHz
5481
5486
5491
5496
5501
5506
5511
5516
5521
5526
5531
5536
5541
5546
5551
5556
5561
5566
5571
5576
5581
5586
5591
5596
5601
5606
5611
5616
5621
5626
5631
5636
5641
5646
5651
5656
5661
5666
5671
5676
5681
5686
5691
5696
5701
5706
5711
5716
5482MHz
5482
5487
5492
5497
5502
5507
5512
5517
5522
5527
5532
5537
5542
5547
5552
5557
5562
5567
5572
5577
5582
5587
5592
5597
5602
5607
5612
5617
5622
5627
5632
5637
5642
5647
5652
5657
5662
5667
5672
5677
5682
5687
5692
5697
5702
5707
5712
5717
5483MHz
5483
5488
5493
5498
5503
5508
5513
5518
5523
5528
5533
5538
5543
5548
5553
5558
5563
5568
5573
5578
5583
5588
5593
5598
5603
5608
5613
5618
5623
5628
5633
5638
5643
5648
5653
5658
5663
5668
5673
5678
5683
5688
5693
5698
5703
5708
5713
5484MHz
5484
5489
5494
5499
5504
5509
5514
5519
5524
5529
5534
5539
5544
5549
5554
5559
5564
5569
5574
5579
5584
5589
5594
5599
5604
5609
5614
5619
5624
5629
5634
5639
5644
5649
5654
5659
5664
5669
5674
5679
5684
5689
5694
5699
5704
5709
5714
Lower Center
Frequency
5.55.4 GHz Specific Frequency Planning Considerations
Adjustment of the lower centre frequency allows the operator to slide the available frequency
settings up and down the 5.4 GHz band. See Figure 13.
The PTP 500 Series Bridge 5.4 GHz variant operates on a 5 MHz channel raster. The channel
raster is set to even centre frequencies. See Figure 13.
5.5.25.4 GHz Transmit Power Reduction at the Band Edges
The 5.4 GHz product variant does not apply any band edge power reduction.
39
Page 40
General Considerations
Band Edge
5725 MHz
Band Edge
5850 MHz
Default
5735MHz
5735
5740
5745
5750
5755
5760
5765
5770
5775
5780
5785
5790
5795
5800
5805
5810
5815
5820
5825
5830
5835
5840
5736MHz
5736
5741
5746
5751
5756
5761
5766
5771
5776
5781
5786
5791
5796
5801
5806
5811
5816
5821
5826
5831
5836
5841
5737MHz
5737
5742
5747
5752
5757
5762
5767
5772
5777
5782
5787
5792
5797
5802
5807
5812
5817
5822
5827
5832
5837
5842
5738MHz
5738
5743
5748
5753
5758
5763
5768
5773
5778
5783
5788
5793
5798
5803
5808
5813
5818
5823
5828
5833
5838
5739MHz
5739
5744
5749
5754
5759
5764
5769
5774
5779
5784
5789
5794
5799
5804
5809
5814
5819
5824
5829
5834
5839
Lower Center
Frequency
5.65.8 GHz Specific Frequency Planning Considerations
Adjustment of the lower center frequency allows the operator to slide the available frequency
settings up and down the 5.8 GHz bands. Figure 14 shows the available spectrum.
The PTP 500 Series Bridge 5.8 GHz variant operates on a 5 MHz channel raster. The channel
raster is set to even center frequencies. See
Figure 14.
5.6.25.8 GHz Transmit Power Reduction at the Band Edges
Operation at or near the 5.8 GHz band edges can results in a lower maximum transmit power.
In some configurations the PTP 500 Series Bridge solution reduces the power when operating at
the edge channels. The amount of reduction, if any, is dependent on the region code of the region
of operation. This currently only affects systems configured with Region Code 1. The power
reduction in the edge channels for 15 MHz is presented in Table 6 (for region code 1 ONLY).
40
Page 41
General Considerations
Channel Center Frequency
(MHz)
573525
573625
573725
573825
5739 - 583825
574025
5742 - 583225
583926
584026
Maximum Output Power (dBm)
Channel Bandwidth (MHz)
15
Table 6 5.8 GHz Band Edge Tx Power Reduction
5.7Distance
The PTP 500 Series Bridge will operate at ranges from 100 m (330 ft) to 200 km (124 miles), within
3 modes: 0-40km (0-25 miles), 0-100km (0-62 miles) and 0-200km (0-124 miles). Operation of the
system will depend on obstacles in the path between the units. Operation at 40 km (25 miles) or
above will require a near line-of-sight path. Operation at 100m (330 ft) could be achieved with one
unit totally obscured from the other unit, but with the penalty of transmitting at higher power
in a non-optimal direction, thereby increasing interference in the band. This subject is covered in
more detail in
Section 6.1.3 “Path Loss Considerations”.
5.8Networking Information
The PTP 500 Series Bridge operates as a transparent Ethernet bridge. Each unit requires an IP
address. This IP address is for management purposes only and it plays no part in the operation
of the system. IP addresses are assigned during initial configuration as described in Section 7.2
“Installation Procedure”.
5.9Lightning Protection and regulations
The amount of lightning protection is dependent on regulatory requirements and the end user
requirements. The standard ODU for the PTP 500 Series Bridge is fitted with surge limiting
circuits and other features to minimize the risk of damage due to nearby lightning strikes. These
standard features may require some additional equipment to be configured as part of the system
installation to be fully effective. Motorola recommends the use of screened cable and Lightning
Protection units to protect connected equipment from nearby strikes.
NOTE: The PTP 500 Series Bridge is not designed to survive direct lightning strikes. For this
reason the unit should not be installed as the highest point in a localized area, unless specific
precautions are taken. See Section 11 “Lightning Protection”.
5.10Electrical Requirements
The PTP 500 Series Bridge requires one mains supply outlet at each end of the link to plug in the
PIDU Plus units (Section 3.3.2 “PIDU Plus – PTP 500 Series Bridge”).
41
Page 42
6Site Planning
6.1Site Selection Criteria
The following are guidelines for selecting the installation location of the ODU and PIDU Plus for
a PTP 500 Series Bridge.
6.1.1ODU Site Selection
When selecting a site for the ODU the following should be taken into consideration:
• It is not possible for people to stand or walk inadvertently in front of the antenna
• Height and location to achieve the best radio path
• Height in relation to other objects with regard to lightning strikes
• Aesthetics and planning permission issues
• Distance from the ODU and connected Network equipment (Maximum cable run from the ODU
to the connected equipment is 100m [330 ft])
• Distance from the PIDU Plus to the ODU (Maximum cable run from the PIDU Plus to the
ODU is 300m [990 ft] when using the Fiber interface)
Site Planning
6.1.2PTP 500 Series Bridge PIDU Plus Site Selection
When selecting a site for the PIDU Plus the following should be taken into consideration:
• Availability of a mains electricity supply
• Accessibility for viewing status indicators and pressing Recovery switch.
6.1.3Path Loss Considerations
The path loss is the amount of attenuation the radio signal undergoes between the two ends of the
link. The path loss is the sum of the attenuation of the path if there were no obstacles in the way
(Free Space Path Loss), the attenuation caused by obstacles (Excess Path Loss) and a margin to
allow for possible fading of the radio signal (Fade Margin).
Where
L
free_space
L
excess
L
fade
L
seasonal
L
capability
L
free_space
= Free Space Path LossdB
= Excess Path LossdB
= Fade Margin Required dB
= Seasonal FadingdB
= Equipment Capability dB
+ L
excess
+ L
fade
+ L
seasonal
< L
capability
(3)
42
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6.1.4Definitions
The equipment capability is given in Table 7, Table 9 (IP Mode) and Table ??, Table 10 (TDM
Mode). Each table gives Link Loss Output Power and System Thresholds for PTP 500 Series
Bridge in all modulation modes for the channel bandwidth 15 MHz. Adaptive Modulation will
ensure that the highest throughput that can be achieved instantaneously will be obtained taking
account of propagation and interference. The calculation of Equation 3 needs to be performed
to judge whether a particular link can be installed. When the link has been installed, web pages
provide information about the link loss currently measured by the equipment both instantaneously
and averaged. The averaged value will require maximum seasonal fading to be added, and then
the radio reliability of the link can be computed.
For minimum error rates on TDM links the maximum modulation mode should be limited to
64QAM 0.75.
The values for (BPSK) are static receive sensitivity measurements. The other values are static
receive sensitivity measurements with an AMOD threshold applied. The AMOD threshold applied
is for a benign radio channel.
Sensitivity: Sensitivity is defined as the combined receive input signal level on both horizontal
and vertical inputs that produces a Null Bit Error Ratio of 3x10-7.
Site Planning
Output Power: The output power is for a centre channel in Region 1. The output power will be
reduced on the edge channels and may vary if different region codes are selected.
AMOD Threshold: The AMOD threshold is the combined receive input signal level on both
horizontal and vertical inputs that results in the link consistently entering the receive modulation
mode under consideration as the signal level is increased.
System Threshold: Thresholds for all modes except BPSK are for the relevant link optimization
AMOD thresholds. System threshold for BPSK is the RPSK receive sensitivity.
Max Link Loss: The maximum link loss for each modulation mode is derived from the AMOD
threshold for that mode (sensitivity threshold for BPSK) and the maximum Region 1 centre channel
output power. The figures assume integral antennas with 23dBi (5.8 GHz and 5.4 GHz) gain are
used.
43
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Site Planning
6.1.55.4 GHz Product Variant - Link Loss, Output Power and System Thresholds versus
Modulation Mode
Table 7 and Table 8 show respectively sensitivity figures for IP and TDM respectively.
Modulation ModeThreshold Value (dBm)Output Power (dBm) Maximum Link Loss (dB)
Channel Bandwidth (MHz)
15 MHz
256QAM 0.75 dual-65.02+21133.02
64 QAM 0.83 dual-69.63+21137.63
64QAM 0.67 dual-73.22+22142.22
16QAM 0.75 dual-76.59+23146.59
16QAM 0.50 dual-80.72+24151.72
QPSK 0.75 dual-82.78+25154.78
QPSK 0.50 dual-89.08+26162.08
256QAM 0.75 single-68.58+21136.58
64QAM 0.83 single-72.90+21140.90
64QAM 0.67 single-76.35+22145.35
16QAM 0.75 single-79.72+23149.72
16QAM 0.50 single-83.82+24154.82
QPSK 0.75 single-85.74+25157.74
QPSK 0.50 single-89.02+26162.02
BPSK 0.50 single-94.25+27168.25
Table 7 5.4GHz - IP Mode - Sensitivity Figures
Modulation ModeThreshold Value (dBm)Output Power (dBm) Maximum Link Loss (dB)
Channel Bandwidth (MHz)
15 MHz
256QAM 0.75 dual-63.52+21131.52
64 QAM 0.83 dual-68.13+21136.13
64QAM 0.67 dual-71.72+22140.72
16QAM 0.75 dual-75.09+23145.09
16QAM 0.50 dual-79.22+24150.22
QPSK 0.75 dual-81.28+25153.28
QPSK 0.50 dual-87.58+26160.58
256QAM 0.75 single-67.08+21135.08
64QAM 0.83 single-71.40+21139.40
64QAM 0.67 single-74.85+22143.85
16QAM 0.75 single-78.22+23148.22
16QAM 0.50 single-82.32+24153.32
QPSK 0.75 single-84.24+25156.24
QPSK 0.50 single-87.52+26160.52
BPSK 0.50 single-94.25+27168.25
Table 8 5.4GHz -TDM Mode - Sensitivity Figures
44
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Site Planning
6.1.65.8 GHz Product Variant - Link Loss, Output Power and System Thresholds versus
Modulation Mode
Table 9 and Table 10 show respectively sensitivity figures for IP and TDM respectively.
Modulation ModeThreshold Value (dBm)Output Power (dBm) Maximum Link Loss (dB)
Channel Bandwidth (MHz)
15 MHz
256QAM 0.75 dual-65.02+21133.02
64 QAM 0.83 dual-69.63+21137.63
64QAM 0.67 dual-73.22+22142.22
16QAM 0.75 dual-76.59+23146.59
16QAM 0.50 dual-80.72+24151.72
QPSK 0.75 dual-82.78+25154.78
QPSK 0.50 dual-89.08+26162.08
256QAM 0.75 single-68.58+21136.58
64QAM 0.83 single-72.90+21140.90
64QAM 0.67 single-76.35+22145.35
16QAM 0.75 single-79.72+23149.72
16QAM 0.50 single-83.82+24154.82
QPSK 0.75 single-85.74+25157.74
QPSK 0.50 single-89.02+26162.02
BPSK 0.50 single-94.25+27168.25
Table 9 5.8GHz - IP Mode - Sensitivity Figures
Modulation ModeThreshold Value (dBm)Output Power (dBm) Maximum Link Loss (dB)
Channel Bandwidth (MHz)
Channel Bandwidth (MHz)
15 MHz
256QAM 0.75 dual-63.52+21131.52
64 QAM 0.83 dual-68.13+21136.13
64QAM 0.67 dual-71.72+22140.72
16QAM 0.75 dual-75.09+23145.09
16QAM 0.50 dual-79.22+24150.22
QPSK 0.75 dual-81.28+25153.28
QPSK 0.50 dual-87.58+26160.58
256QAM 0.75 single-67.08+21135.08
64QAM 0.83 single-71.40+21139.40
64QAM 0.67 single-74.85+22143.85
16QAM 0.75 single-78.22+23148.22
16QAM 0.50 single-82.32+24153.32
QPSK 0.75 single-84.24+25156.24
QPSK 0.50 single-87.52+26160.52
BPSK 0.50 single-94.25+27168.25
Table 10 5.8GHz - TDM Mode - Sensitivity Figures
45
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Installation
7Installation
Motorola recommends that only qualified personnel undertake the installation of a PTP 500 Series
Bridge solution.
7.1Preparation
Before proceeding with the installation you should:
• Check the contents of all packages against the parts lists shown in the packing list.
• Ensure that you have the correct tools for the job.
• Ensure that you are qualified to undertake the work.
• Ensure that you have taken the correct safety precautions.
• Have completed the site planning as described in Section 6 “Site Planning”.
7.2Installation Procedure
The 500 Series installation procedure consists of the following steps:
• Mounting the ODUs, Section 7.6 “Mounting the ODUs”
• Connecting up, Section 7.7 “Connecting Up”
• Mounting the PIDU Plus Units, Section 7.7.9 “Mounting the PTP 500 Series Bridge PIDU
Plus”
• Mounting the Lightning Protection Units, Section 7.7.5 “Fitting a Lightning Protection Unit”.
• Powering Up, Section 7.7.10 “Powering Up”
• Aligning the ODUs, Section 7.7.11 “Aligning the PTP 500 Series Bridge ODUs”
7.3Tools Required
The following specific tools are required to install a PTP 500 Series Bridge in addition to general
tools:
• 13mm Spanner / Wrench
• RJ45 Crimp Tool
• IBM Compatible Personal Computer (PC) running Windows 98 or later with 10, 100 or
1000BaseT Ethernet (Ability to change IP settings easily is recommended)
• Either Internet Explorer version 6 or higher, or FireFox 1.5 or higher are recommended.
• Ethernet patch cable
7.4Installation Support
Online installation support and contact details for your regional support can be found at
http://www.motorola.com/ptp. A Frequently Asked Questions (FAQ) section can be found
in Section 18 “FAQs”.
46
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Installation
7.5Legal Disclaimer
IN NO EVENT SHALL MOTOROLA, INC. BE LIABLE FOR ANY INJURY TO ANY PERSONS
OR ANY DAMAGE CAUSED DURING THE INSTALLATION OF THE MOTOROLA PTP 500
SERIES PRODUCT.
7.6Mounting the ODUs
The ODU mounting bracket is designed to ease installation by fixing the bracket to a pole and
then bringing the ODU into position using a single bolt fixing. The ODU should be mounted using
the following steps ensuring that the cable entry is at the bottom.
The ODU mounting bracket is designed to work with poles with diameters in the range 50mm (2”)
to 75mm (3”).
Step 1: Mount the
bracket to the pole.
Pole diameters of 25mm (1”) to 50mm (2”) can be accommodated by inverting the back of the
bracket as shown in Figure 15.
Figure 15 Mounting to pole diameters
25mm (1”) to 50mm (2”)
When adjustment is complete tighten all bolts to 14Nm (11lb ft).
CAUTION: Do not over tighten the bolts as bracket failure may occur.
Step 2: Mate the unit to
the bracket together and
tighten the nut and bolt.
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The enclosure and mounting brackets of the PTP 500 Series Bridge product range are capable of
withstanding wind speeds up to 151mph (242kph). The installer should ensure that the structure
the bridge is fixed to is also capable of withstanding the prevalent wind speeds and loads. See
Section 12 "Wind Loading".
The integral safety loop should be used both for hoisting the ODU up a mast or building and into
position, and also as a fixing point to secure a permanent safety lanyard from the tower/building
to the ODU in case of mounting failure.
Figure 16 Integral Safety Loop
The length of the safety lanyard must not exceed 1m (approx 3 ft) in length. The lanyard should
be made from a material that does not degrade in an outdoor environment.
The safety lanyard must be fixed to a separate fixing point that is not part of the direct mounting
system for the ODU.
7.7Connecting Up
7.7.1Preparing the PIDU Plus To ODU Cable
NOTE: The maximum cable length between the ODU and the user’s Network Equipment is 100m
(330 ft). Cable lengths up to 300m (984 ft) can be used where the PIDU Plus to ODU cable is
supplying power only, i.e., when using the PTP 500 Series Bridge Optical Interface.
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The cable should be assembled as shown in Figure 17:
Figure 17 Correct Cable Preparation for the Recommended Cable
Both ends of the ODU cable are terminated in the same way. The above procedure should be
repeated for the PIDU Plus end of the cable when the cable routing process is complete. This
assumes that the installation uses PTP LPUs. If not, then the PIDU Plus end of the cable does
not require a Gland, but just the RJ45.
NOTE: The PIDU Plus end of the cable does not use a cable gland.
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Figure 18 shows a completed ODU to PIDU Plus cable.
Figure 18 Completed ODU Connector
CAUTION: Do not over tighten the glands as the internal seal and structure may be damaged.
See Figure 19 for an example of an over tightened cable gland.
Figure 19 Warning Not To Over
tighten Cable Gland
7.7.2Making the Connections at the ODU
Looking at the back of the unit with the cable entry at the bottom, the PTP 500 Series Bridge
PIDU Plus connection is the first hole on the right (Figure 20) and is labeled “PIDU +”.
Figure 20 PTP 500 Series Bridge
PIDU Plus Connexion
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7.7.3Making the PTP 500 Series Bridge PIDU Plus Connection At The ODU
The following procedure describes how connection is made at the ODU. It is often easier to carry
out this procedure on the ground or a suitable surface prior to mounting the ODU.
Ensure that no power is connected to the PIDU Plus or present on the cable before connecting the
ODU.
Step 1: Assemble the cable
as described in 5.7.1 above
Step 3: Screw in the body of the
weather proofing gland and tighten
Figure 21 Connecting the PIDU+ to the ODU
Step 2: Insert the RJ45 connector making
sure that the locking tab snaps home
Step 4: Screw on the clamping nut and tighten
(Do not over tighten – see Figure 19)
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Should it be necessary to disconnect the PIDU Plus to ODU cable at the ODU, this can be
achieved by removing the weather proofing gland and depressing the RJ45 locking tab with a
small screwdriver as shown below:
Figure 22 Disconnecting the ODU
CAUTION: Ensure that power is removed from the system at the PIDU Plus to prevent damage
to the ODU while making or breaking the connection.
7.7.4Routing the Cable
After connecting the cable to the ODU it can be routed and secured using standard cable routing
and securing techniques. When the cable is in place it can then be cut to the desired length at the
PIDU Plus prior to connection to the PIDU Plus
7.7.5Fitting a Lightning Protection Unit
If you have opted to fit a Lightning Protection unit, this should be installed by following the
manufacturer’s instruction. For recommended types see Section 11 "Lightning Protection”
7.7.6Grounding the Installation
The Outdoor Unit (ODU) must be properly grounded to protect against power surges. It is the
user’s responsibility to install the equipment in accordance with Section 810 of the National Electric
Code, ANSI/NFPA No.70-1984 or Section 54 of the National Electrical Code in the country of
installation. These codes describe correct installation procedures for grounding the outdoor unit,
mast, lead-in wire and discharge unit, size of grounding conductors and connection requirements
for grounding electrodes. It is recommended that installation of the outdoor unit be contracted to
a professional installer.
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7.7.7Making the ODU Connection at the PTP 500 Series Bridge PIDU Plus
The ODU is connected to the PIDU Plus by means of a concealed RJ45 connector. The RJ45 connection has been placed inside the PIDU Plus hinged cover to prevent the user from inadvertently
plugging other equipment into the ODU RJ45 socket.
CAUTION: Plugging other equipment into the ODU RJ45 socket may damage the equipment
due to the non-standard techniques employed to inject DC power into the 1000BaseT connection
between the PIDU Plus and the ODU. Plugging the ODU into other equipment may damage the
ODU and/or the other equipment.
Step 1: Undo the retaining
screw and hinge back the cover
Step 3: Replace the cover and secure with the retaining screw
Step 2: Plug in the ODU into the PIDU
Plus Cable ensuring that it snaps home
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7.7.8Making the Network Connection at The PIDU Plus – PTP 500 Series Bridge
The Network connection is made by connecting the user’s Network Equipment directly to the
PIDU Plus LAN port as shown in Figure 23.
Figure 23 Making the Network Connection at the PIDU Plus
7.7.9Mounting the PTP 500 Series Bridge PIDU Plus
This step is optional. Motorola recommends that you mount the PIDU Plus on a wall or other
suitable mounting surface. This prevents the unit from being knocked or kicked and can help
maintain link availability. Ensure that the Recovery switch can be accessed when mounting the
unit.
Plus to the wall using the lugs provided
Make connections as per Section 7.7.8
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CAUTION: The PIDU Plus is not waterproof and should be mounted away from sources of
moisture. If mounted outdoors, the unit should be mounted in a rain proof enclosure, preferably
ventilated.
It is also recommended that you fit a drip loop on the PIDU Plus to ODU cable to ensure that
any moisture that runs down the cable into the cabinet or enclosure cannot enter the PIDU Plus.
As shown in Figure 24. The network connection and mains cable should be treated in the same
way if there is a risk that they can carry moisture to the PIDU Plus.
CAUTION: It is possible for moisture to enter the cable due to damage to the outer protective
layer. This moisture can track down the inside of the cable, filling up the drip loop and eventually
finding its way into the PIDU Plus. To protect against this the outer protective layer of the cable
can be opened up at the bottom of the drip loop to allow this moisture to escape.
7.7.10Powering Up
The PTP 500 Series Bridge is supplied as a pair of matched Master/Slave units. The Master unit
can now be powered up and accessed using the default URL http://169.254.1.2/; the Slave unit
can be accessed using http://169.254.1.1/.
Prior to powering up the PTP 500 Series Bridge, a computer with web browsing capabilities should
be configured with an IP address of 169.254.n.n and subnet mask of 255.255.0.0 where n is any
value between 1 and 254 but excluding 1.1 or 1.2. If the default addresses of the unit 169.254.1.1/2
clashes with an address you are already using on your LAN, or you are not sure, you should set up
an isolated LAN. As the LAN connection presented at the PIDU Plus has a default configuration
Figure 24 PTP 500 Series PIDU Plus Drip Loop Configuration
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as a hub/switch (and auto-sensing MDI/MDIX cross over is employed), connection can be made
directly to the computer using a standard CAT 5 patch cable.
Before physical installation takes place the units to be installed should be set up as described in
the Section 8.3.4 "Install Pages". It is recommended that this procedure be carried out on the
bench before physical installation commences. Providing it is safe to do so, the installer should
take the process to the point where a radio link is established before proceeding to the installation
site.
NOTE: It is possible that some units may not be accessed using the above default URL. This is
because these units may have been previously configured with IP addresses 10.10.10.11 (Master)
and 10.10.10.10 (Slave). Therefore, users must use the URL http://10.10.10.10/ and/or URL
http://10.10.10.11/ to configure the units. Please ensure that a computer with web browsing
capabilities is configured with an IP address of 10.10.10.n, where n is any value between 2 and 254
but excluding 10 and 11, to configure these units.
7.7.11Aligning the PTP 500 Series Bridge ODUs
The following is a description of the steps taken to establish a radio link between the two units
forming the bridge and align the units for the best signal strength.
The PTP 500 Series Bridge uses audible tones during installation to assist the installer with
alignment. The installer should adjust the alignment of the ODU in both azimuth and elevation
until highest pitch tone is achieved6. The tones and their meanings are as follows:
State NameTone Description State DescriptionPitch Indication
(Higher pitch =
higher power)
Free Channel Search Regular beepExecuting band scanN/A
ScanningSlow broken toneNot demodulating the
Rx Power
wanted signal
SynchronizedFast broken toneDemodulating the
Rx Power
wanted signal
RegisteredSolid toneBoth Master and Slave
Rx Power
units exchanging Radio
layer MAC management
messages
Table 11 Audio indications from the ODU
The term ‘wanted signal’ refers to that of the peer unit being installed.
In each of the states detailed above, the unit should be aligned to give the highest pitch tone. It
should be noted that if, when in the Synchronized or Registered state, the tone varies wildly, you
6
The pitch of the alignment tone is proportional to the received power of the wireless signals. The best results are
usually achieved by making small incremental movement in angular alignment.
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may be suffering from interference or a fast fading link. Installing in this situation may not give a
reliable link. The cause of the problem should be investigated.
For the ease of alignment, both Master and Slave units use the install tones in the same way but
with some small behavioral differences. This allows the installer to install the Slave unit first and
carry out the initial alignment with the Master unit if desired. However, due to the behavioral
differences of Master and Slave units, it is recommended that the Master unit is installed first and
the initial alignment carried out at the Slave unit.
Note also that there is a graphical installation screen (Section 8.3.5 "Graphical Install") available using the web interface that displays the state of the link during the alignment process (up
green,Down, red).
The following behavior should be noted:
• When first started up and from time to time, the Master unit will carry out a band scan to
determine which channels are not in use. During this time, between 10 and 15 seconds, the
Master unit will not transmit and as a consequence of this neither will the Slave unit. During
this time the installation tone on the master unit will drop back to the band scan state, and the
Slave unit will drop back to the Scanning state with the pitch of the tone set to the background
noise level. Alignment of the unit should cease during this time.
• The master unit can take up to 60 seconds in 0-40km (0-25 miles) mode, 90 seconds in 0-130km
(0-81 miles) mode and 120 seconds in 0-200km (0-124 miles) mode to determine the range of
the link being installed7. The Master unit will remain in the Scanning state until the range of
the link has been established. The Master unit will only move to the Synchronized state when
the range of the link has been established.
• If, at the end of the ranging period, the Registered state is not achieved due to interference
or other reasons, the Master unit will retry twice more on the same channel before moving to
another available channel. Should this occur it might take a number of minutes to establish a
link in the Registered state.
• The Slave unit does not have a ranging process. The slave unit will change to the Synchronized
state as soon as the wanted signal is demodulated.
When the alignment process is complete the installer MUST REMEMBER TO DISARM8BOTH
UNITS in the link as described in
Section 8.3.4 "Install Pages". This is necessary in order to:
• Turn off the audible alignment aid (Section 8.3.4.4 "Disarm")
• Enable Adaptive Modulation
• Fully enable Advanced Spectrum Management with i-DFS
• Clear unwanted installation information from the various systems statistics
• Store the link range for fast link acquisition on link drop
• Enable higher data rates
7
If the unit is operating where mandatory radar avoidance algorithms are implemented the ranging behavior for the
PTP 500 Series Bridge may be affected. The Master has to monitor the initially chosen channel for 60 seconds to
make sure it is clear of radar signals before transmitting. If a radar is detected during any of the installation phases
a further compulsory 60 seconds channel scan will take place as the master unit attempts to locate a new channel
that is free of radar interference.
8
After 24 hours, the units will be disarmed automatically provided that they are armed and that the link is UP.
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8Web Page Reference
The web user interface has three main sections. The home page presents to the operator a high
level summary of the PTP 500 Series Bridge point-to-point wireless link. The status page presents
a more detailed set of system parameters describing the performance of the wireless link together
with other key system performance metrics. The final section is the system administration section.
This section is password protected and allows the system administrator to perform all the day-today administrative procedures, e.g. software upgrade and performing configuration changes.
The following subsections give a detailed usage guide for all the web user interfaces. The web pages
are best viewed using a screen resolution of at least 1024 x 768 pixels on a PC using Microsoft
Internet Explorer Version 6 or 79.
The navigation bar on the left hand side of the web page is used to move between the various
management pages. The currently selected page is always highlighted with a light blue background.
The menu is hierarchical. Selecting a menu item which has associated submenu options will
automatically display all sub options. A sample web page with the navigation menu is shown in
Figure 25 when the ‘Home’ Link is highlighted as the current page.
Figure 25 Menu
Navigation Bar
9
The web pages have also been tested with Firefox 2.0.0.12. Other browsers may function correctly but have not
been tested.
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8.1Home Page – PTP 500 Series Bridge
The home page for the PTP 500 Series Bridge has been designed to display a high level summary
of the status of the wireless link and associated equipment. The home page (Figure 26) normally
displays four key system attributes:
Wireless Link Status: The Wireless Link Status attribute displays the current status of the
PTP 500 Series Bridge wireless link. A state of ‘Up’ on a green background indicates that a pointto-point link is established. A state of ‘Down’ on a red background indicates that the wireless link
is not established. If the link is down for an unknown reason the system administrator should first
consult the status web page for a more detailed summary of up to date system diagnostics.
Link Name: The link name attribute is a name and/or handle allocated by the system administrator to aid the identification of the unit, network or building.
Elapsed Time Indicator: The elapsed time indicator attribute presents the total time in days,
hours, minutes and seconds since the last system restart. The system can restart for several reasons,
e.g., commanded reboot from the system reboot webpage, or a power cycle of the equipment.
System Clock: If SNTP (Simple Network Time Protocol) is enabled, or the clock has been
set, then a system clock attribute is displayed giving the date and time of the last page refresh.
Section 8.3.10.8 “SNTP (Simple Network Time Protocol) explains how to enable SNTP and
Section 8.3.10.9 explains how to set the clock.
8.1.1Home Page Alarm Display
The home page is also used to display all outstanding major system alarms. Whenever system
alarms are asserted, a yellow warning triangle is displayed on web page navigation bar. The warning
triangle will be visible from all web pages. Clicking the warning triangle will cause the web page
to jump back to the system homepage. Figure 27 shows a sample alarm screen.
Figure 26 System Summary Page
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Figure 27 Alarm Warning Triangle
The following system alarms are defined:
Region Code: The region code prohibits the wireless unit from operating outside the regulated
limits. An invalid region code indicates a corrupted license key. Note that a change of state may
generate an SNMP trap and/or SMTP email alert.
Install Status: A non-OK value indicates that signaling was received with the wrong MAC
address. Note that it is very unusual to detect this, because units with misconfigured Target MAC
Address will normally fail to establish a wireless link. However, rare circumstances may establish
a partial wireless link and detect this situation. NB: A non-OK value on start-up, or a change of
value during operation, may generate an SNMP trap and/or SMTP email alert.
Install Arm State: This alarm warns when a wireless unit is in installation mode. After installation the wireless unit should be disarmed. This will increase the wireless link’s data-carrying
capacity and stop the installation tone generator. The wireless link is disarmed from the ‘Installation Wizard’ see Section 8.3.4.4 “Disarm”. Note that a change of state may generate an SNMP
trap and/or SMTP email alert.
Unit Out Of Calibration: The unit is out of calibration and must be returned to the factory
using the RMA process for re-calibration. Note that a change of state may generate an SNMP
trap and/or SMTP email alert.
Incompatible Region Codes: The PTP 500 Series Bridge uses region codes to comply with
local regulatory requirements governing the transmission of wireless signals in the 5.8, 5.4 GHz
and 2.5 GHz bands. Region codes can only be changed by obtaining a new PTP 500. Note that a
change of state may generate an SNMP trap and/or SMTP email alert.
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Incompatible Master and Slave: A non-zero value indicates that the master and slave ends of
the wireless link are different hardware products, or have different software versions. Note that it
is very unusual to detect this because incompatible units will normally fail to establish a wireless
link. However, some combinations may establish a partial wireless link and detect this situation.
Note that a non-zero value may generate an SNMP trap and/or SMTP email alert.
Ethernet Configuration Mismatch Alarm: The detection of Ethernet fragments (runt packets)
when the link is in full duplex is an indication of an auto-negotiation or forced configuration
mismatch. Note that a change of state may generate an SNMP trap and/or SMTP email alert.
No Wireless Channel Available: Spectrum Management was unable to locate a suitable wireless
channel to operate on. Note that a change of state may generate an SNMP trap and/or SMTP
email alert.
SNTP Synchronization Failed: This warning indicates that SNTP has been enabled but that
the unit is unable to synchronize with the specified SNTP server. Section 8.3.10.8 “SNTP
(Simple Network Time Protocol) explains how to configure SNTP. Note that a change of state
may generate an SNMP trap and/or SMTP email alert.
Wireless Link Disable Warning: This warning is displayed if the Wireless link has been administratively disabled via the SNMP Interface (see Section 8.3.10 “Remote Management Page”).
The Wireless Interface MIB-II ifAdminStatus attribute has been set to DOWN. To enable the Ethernet interface, set the ifAdminStatus attribute to UP. Note that a change of state may generate
an SNMP trap and/or SMTP email alert.
Ethernet Link Disable Warning: This warning is displayed if the Ethernet link has been administratively disabled via the SNMP Interface (see Section 8.3.10 “Remote Management Page”).
The Ethernet Interface MIB-II ifAdminStatus attribute has been set to DOWN. To enable the Ethernet interface, set the ifAdminStatus attribute to UP. Note that a change of state may generate
an SNMP trap and/or SMTP email alert.
Ethernet Link Status: Current status of the Ethernet link. If there are any problems with the
Ethernet interface, this alarm will be asserted. This alarm will most likely be seen if the unit has
no Ethernet cable plugged into its Ethernet socket. Note that a change of state may generate an
SNMP trap and/or SMTP email alert.
Fiber Link Status: If the fiber link is not OK, there are two possible causes: Either the fiber
link has been installed but disabled (because the license key does not include fiber support), or
the link could not be established even though an optical carrier was detected (due perhaps to a
broken TX fiber, or the link is disabled at the fiber link partner). Note that a change of status
may generate an SNMP trap and/or SMTP email alert.
TDD Synchronization Status: Current status of the TDD Synchronization (acquiring synchronization, no timing reference and timing system not connected). Note that a change of state may
generate an SNMP trap and/or SMTP email alert.
8.2Systems Status Page
The status page has been designed to give the system administrator a detailed view of the operation
of the 500 Series Bridge from both the wireless and network perspectives.
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The page is subdivided into three main categories Equipment, Wireless and Ethernet/Internet. The
‘Equipment’ section contains the unit’s inventory and identification information. The ‘Wireless’
section presents the key wireless metrics, which are displayed as a series of measurements. The
‘Ethernet/Internet’ section describes the unit’s network identity and connectivity.
The status page can be configured to refresh itself at an operator defined rate (if the user is logged
in as system administrator). The refresh period defaults to 3600 seconds and can easily be changed
to refresh at any period between 2 seconds and 3600 seconds. Pressing the ‘Update Page Refresh
Period’ button causes a new page refresh period to be adopted by the system. The page refresh
mechanism uses a HTML Meta refresh command. Therefore the refresh is always initiated by the
local browser and not by the 500 Series Bridge at this interval.
The two PTP 500 Series bridges units are arranged in a master and slave relationship. The roles
of the units in this relationship are displayed in the page title. The master unit will always have
the title ‘- Master’, and the slave will always have ‘- Slave’ appended to the ‘Systems Status’ page
title.
Figure 28 Status Page
The following section details all the attributes displayed on the status page:
Link Name: The link name is allocated by the system administrator and is used to identify the
equipment on the network. The link name attribute is limited to a maximum size of 63 ASCII
characters.
Link Location: The link location is allocated by the system administrator and can be used as
a generic scratch pad to describe the location of the equipment or any other equipment related
notes. The link location attribute is limited to a maximum size of 63 ASCII characters.
Software Version: The attribute describes the version of software installed on the equipment.
The format of the attributes is FFSSS-XX-YY where FF is the frequency variant (2.5, 5.4 or 5.8
GHz), SSS is the System Release, XX is the major release version and YY is the minor release
version.
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Hardware Version: The hardware version attribute contains all the combined hardware version
information. The attribute is formatted as DXX-RYY-Z where DXX contain the version of the
digital card, RYY contains the version of the RF (radio frequency) card and Z describes the antenna
type which can be I (integrated) or C (connectorized).
Region Code: The region code is used by the system to constrain the wireless to operate within
regulatory regime of the particular country. The region code is encoded in the product license key.
If the operator wishes to change region code, a new license key must be obtained from Motorola
or the local point-to-point distributor / system integrator.
Elapsed Time Indicator: The elapsed time indicator attribute presents the total time in years,
days, hours, minutes and seconds since the last system restart. The system can restart for several reasons, e.g. commanded reboot from the system reboot web page, or a power cycle of the
equipment.
Ethernet Link Status: Current status of the Ethernet link. A state of ‘Up’ with a green background indicates that an Ethernet link is established. A state of ‘Down’ with a red background
indicates that the Ethernet link is not established.
Ethernet Speed and Duplex: The negotiated speed and duplex setting of the Ethernet interface.
The speed setting is specified in Mbps. Full Duplex data transmission means that data can be
transmitted in both directions on a signal carrier at the same time. For example, on a local area
network with a technology that has full duplex transmission; one workstation can be sending data
on the line while another workstation is receiving data. Half Duplex data transmission means
that data can be transmitted in both directions on a signal carrier, but not at the same time.
For example, on a local area network using a technology that has half duplex transmission, one
workstation can send data on the line and then immediately receive data on the line from the same
direction in which data was just transmitted.
Remote IP Address: Hyperlink to the other side of the Link. The IP address of the peer link is
displayed if the Link is UP, otherwise “unavailable” is displayed.
Refresh Page Period: The Status page refreshes automatically according to the setting entered
here (in seconds). This attribute is only displayed when the user is logged on as System Administrator.
Wireless Link Status: As the attribute name suggests it displays the current status of the wireless
link. A state of ‘Up’ on a green background indicates that a point-to-point link is established. A
state of ‘Down’ on a red background indicates that the wireless link is not established.
Maximum Transmit Power: The maximum transmit power that the local wireless unit is permitted to use to sustain a link.
Remote Maximum Transmit Power: The maximum transmit power that the remote wireless
unit is permitted to use to sustain a link.
Transmit Power: Transmit power histogram10is expressed in dBm and presented as: max, mean,
min, and latest. The max, min and latest are true instantaneous measurements; the mean is the
mean of a set of one second means.
10
An histogram is calculated over a one hour period. If the equipment has been running for less than one hour then
the histogram is calculated over the current elapsed time. The data used to compute the histogram statistics can
be downloaded in an ASCII comma separated value (CSV) format via the diagnostics CSV Download page, see
Section 8.3.11.2 “Diagnostics Download”.
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Receive Power: Receive power histogram is expressed in dBm and presented as: max, mean,
min, and latest. The max, min and latest are true instantaneous measurements; the mean is the
mean of a set of one second means. See footnote 10 “histograms”.
Vector Error: The vector error measurement compares the received signal’s In phase / Quadrature (IQ) modulation characteristics to an ideal signal to determine the composite error vector
magnitude. The results are stored in an histogram and expressed in dB and presented as: max,
mean, min and latest. The max, min and latest are true instantaneous measurements; the mean
is the mean of a set of one second means. The expected range for Vector Error would be approximately -2dB (NLOS link operating at sensitivity limit on BPSK 0.67) to -33dB (short LOS link
running 256 QAM 0.83). See footnote 10 “histograms”.
Link Loss: The link loss is the total attenuation of the wireless signal between the two point-topoint units. See footnote 10 “histograms”.
The link loss calculation presented below:
Pl= PT− PR+ gT+ g
R
(4)
Where
P
= Link LossdB
l
P
= Transmit power of the remote wireless unitdBm
T
P
= Received signal power at the local unitdBm
R
gt, gr= Antenna gain at the remote and local units respectively11dBi
Equation - Link Loss
Transmit Data Rate: The data rate in the transmit direction, expressed in Mbps and presented
as: max, mean, min, and latest in an histogram format. The max, min and latest are true
instantaneous measurements; the mean is the mean of a set of one second means.
See footnote 10 “histograms”. Expected data rates can be found in Section 14 “Data Rate
Calculations”.
Receive Data Rate: The data rate in the receive direction, expressed in Mbps and presented as:
max, mean, min, and latest in an histogram format. The max, min and latest are true instantaneous
measurements; the mean is the mean of a set of one second means.
See footnote 10 “histograms”. Expected data rates can be found in Section 14 “Data Rate
Calculations”.
Link Capacity: The maximum aggregate data rate capacity available for user traffic, assuming
the units have been connected using Gigabit Ethernet. The link capacity is variable and depends
of the prevailing wireless conditions as well as the distance (range) between the two wireless units.
Transmit Modulation Mode: The modulation mode currently being used on the transmit
channel. List of all the modulation modes can be found in Section 14 where data rate calculations
plots are given for each available modulation mode.
11
The antenna gain of the 500 Series bridge (23.5 dBi) is used unless one or both of the units is a Connectorized
version.
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Receive Modulation Mode: The modulation mode currently being used on the receive channel.
List of all the modulation modes can be found in Section 14 where data rate calculations plots
are given for each available modulation mode.
Receive Modulation Mode Detail: This supplies the user with information regarding the
receive modulation mode in use. Possible values are:
• Running at maximum receive mode
• Running at user-configured Max Modulation Mode
• Restricted due to byte errors on the wireless link or local Ethernet Tx Fifo Drops
• Restricted because a DFS channel change is in progress
• Restricted due to telecoms acquisition mode
• Restricted due to the low Ethernet link speed
• Limited by the wireless conditions
Range: The range12between the 500 Series bridge ODUs.
8.3System Administration Pages
The following menu options are available for the system administrator and can be password protected. Figure 29 shows the system administration login page. By default a system administrator
password is not set. Simply click the login button to access the system administration features.
Figure 29 System Administration Login Page
Once the password has been set using the ‘Change Password’ menu item the system administration
pages will only be available after the user has entered the correct password.
The features that are only available to the system administrator are:
• Configuration
• Statistics
• The Installation Wizard
• Software Upgrade
12
The PTP 500 Series Bridge displays range in km by default, if the user would prefer to display range using Miles the
‘Distance Units’ attribute should be set to imperial, see the “Properties” web page Section 8.3.14 “Properties”.
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• Spectrum Management including DFS
• Remote management
• Diagnostics Plotter
• Password Management
• License Key Management
• Properties
• System Reboot
8.3.1System Configuration
The configuration of the 500 Series Bridge is organized into three sections:
• General configuration
• LAN configuration
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• Telecoms Configuration
• Save and Restore
The general configuration allows modification of high level administrative (descriptive) attributes
and high level wireless configuration.
The LAN configuration sub menu allows the system administrator to modify the Ethernet and IP
configuration of the 500 Series Bridge.
The telecoms submenu displays the current status of the telecoms interface and allows the configuration of interface loopbacks.
The save and restore submenu allows the system administrator to backup and restore the bridge
configuration. It is recommended after a unit has been successfully installed; a copy of the active
configuration is taken and archived by the system administrator.
8.3.1.1General Configuration Page
The general configuration page (Figure 30) is used by the system administrator to configure
the 500 Series Bridge’s high level administrative (descriptive) attributes and high level wireless
configuration.
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Figure 30 System Configuration Page
While the majority of the system configuration is entered during installation and should never
require changing, this page offers the system administrator the ability to change the basic system
parameters for both the wireless and Ethernet components.
Link Name: User defined identity for the unit (max 63 characters).
Link Location: Can be used as a generic scratch pad to describe the location of the equipment.
Master Slave Mode and Link Mode Optimization current settings are displayed and can be
modified using the Installation Wizard pages. See Section 8.3.4 “Install Pages”
Max Receive Modulation Mode: This is the maximum mode the unit will use as its adaptive
modulation. By default the Max Receive Modulation Mode is the highest mode available.
For minimum error rates on TDM links the user should set the maximum modulation mode to
64QAM 0.75 at both ends of the link.
Ethernet Capped Max Wireless Speed: When enabled this option will cap the wireless speed
to a mode that the connected Ethernet connection can sustain.
Maximum Transmit Power: This specifies the maximum transmit power in dBm of the system.
It is country dependent and although the user can change this in 1dB steps, it will be limited to
that country’s regulations13.
13
In the UK there is a legal requirement to provide a minimum of 19dB of transmit power control range. When the
equipment is operating with a UK License Key, an additional facility is provided on the configuration page that
allows the transmitted power to be reduced by 19dB compared to the maximum allowed with a simple single step
control.
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Why Reduce Transmit Power?
If the link losses are low and the link data rate and availability targets are being easily achieved,
the transmitted power level may be reduced with a consequent benefit to other users of the band,
e.g. fixed satellite links.
8.3.1.2LAN Configuration Page
The LAN configuration page (Figure 31) is used by the system administrator to configure the
500 Series Bridge’s LAN interface.
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Figure 31 LAN Configuration Page
IP Address: Internet protocol (IP) address. This address is used by the family of Internet
protocols to uniquely identify this unit on a network.
Subnet Mask: A subnet allows the flow of network traffic between hosts to be segregated based
on a network configuration.
Gateway IP Address: The IP address of a computer / router on the current network that acts
as a gateway.
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VLAN High Priority Traffic Threshold: All packets with an 802.1P priority tag greater than
or equal to the indicated value will be treated as a high priority packet for transmission over the
wireless link.
Use VLAN For Management Interfaces: This controls whether the management interfaces
(WWW/SNMP/SMTP/SNTP) use 802.1Q VLAN tags or not. See
Section 8.3.1.3 “LAN Con-
figuration Page - Use VLAN For Management Interface”.
Ethernet Auto Negotiation: This enables the Ethernet configuration to be forced rather than
auto negotiated.
Caution:The configuration should only be forced if you are having problems with auto
negotiation. You must ensure that you configure both this unit and the Ethernet port
to which it is connected identically. If you force a fixed Ethernet Configuration on
the 500 Series bridge then you MUST also force the same fixed configuration on
the equipment to which it is connected. If you fail to force the configuration of the
connected equipment, its automatic configuration mechanisms will normally cause a
duplex mismatch, and you will receive greatly reduced throughput!
When Ethernet Auto Negotiation is Disabled the format of the LAN configuration page will change
see Section 8.3.1.4 “LAN Configuration Page – Manual Ethernet Configuration”.
Auto Neg Advertisement: This controls the rates that the auto negotiation mechanism will advertise as available. Warning: Over the air throughput will be capped to the rate of the Ethernet
interface at the receiving end of the link.
Ethernet Auto Mdix: This enables/disables the Auto Medium Dependent Interface (MDI)/Medium
Dependent Interface Crossover (MDIX) capability. Default is “Enabled”.
Drop Ethernet Link On Wireless Link Down: When this option is enabled the Ethernet
link is momentarily dropped when the wireless link goes down. This feature is used to indicate to
the connected network equipment that this Ethernet link is no longer available, thus causing STP
(Spanning Tree Protocol) to re-route packets through an alternate link.
Local Packet Filtering: When Local Packet Filtering is “Enabled”, the bridge learns the source
MAC addresses of devices transmitting Ethernet packets on the local Ethernet network, and only
bridges packets to the remote unit if the destination MAC address has not been learned as a
’local’ device. When Local Packet Filtering is ‘Disabled’ the bridge does not learn the source MAC
addresses of devices transmitting Ethernet packets on the local Ethernet network, and bridges
ALL Ethernet packets received to the remote unit. Local Packet Filtering should be disabled when
external Ethernet switching hardware or a router is present. The default setting for Local Packet
Filtering is disabled.
All of the above attributes are non-volatile, once set they will be used by the unit even after a power
on reboot. A number of attributes, such as IP Address, Subnet Mask and Gateway IP Address and
VLAN settings will require a reboot before they are used. If any of these attributes are changed a
reboot screen appears asking the user to verify the reboot (
Figure 32 or Figure 33).
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Figure 32 Configuration Reboot Page
Figure 33 Configuration Reboot Page
– Ethernet Auto Negotiation Disabled
This will be followed by a pop-up dialogue box asking to confirm the action.
Note: At this point you will lose connection to the unit. If you have just changed the IP Address
you now have to reconnect to the unit using the address just set.
8.3.1.3LAN Configuration Page – Use VLAN For Management Interfaces
The layout of the LAN Configuration page changes if this attribute is enabled in order to allow the
VLAN VID and VLAN Priority to be set, see Figure 34. The VLAN settings are applied only
after the unit is rebooted.
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Caution:You must ensure that you can access the VLAN which you configure here, otherwise
you will be unable to access the unit following the next reboot.
Caution: The PTP 500 is only compatible with single VLAN tagged packets. Any packet with
two or more tags will be ignored.
Figure 34 VLAN Configuration Fields
VLAN Management VID: This 802.1Q VLAN VID will be included in packets generated by
the management interfaces. Valid settings are in the range 0 to 4094.
VLAN Management Priority: This 802.1Q VLAN Priority will be included in packets generated
by the management interfaces. Valid settings are in the range 0 to 7.
VLAN Management VID Validation: If enabled, the management interfaces will only respond
to Ethernet packets tagged with the configured 802.1Q VLAN Management VID; otherwise packets
with any VID will be accepted.
Figure 35 LAN Configuration Page – Manual Ethernet Configuration
Force Configuration: This option allows the user to force the speed and duplex setting of the
Ethernet interface.
Warning: Over the air throughput will be capped to the rate of the Ethernet interface
at the receiving end of the link
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8.3.1.5Save and Restore Configuration File
The save and restore feature of a PTP 500 Series Bridge allows the system administrator to
backup the operation configuration of the wireless unit. It is recommended that this facility is
used immediately after a successful PTP 500 Series Bridge installation or prior to any software
upgrade. In the unlikely event that a unit has to be replaced in the field, the replacement unit can
be reconfigured by simply playing back the saved configuration file.
To save the configuration file click on the ‘Save Configuration File’ button (
the configuration file (.cfg) to the hard drive of your computer
14 15
.
Figure 36) and save
Figure 36 Save and Restore Configuration Page
14
There is a feature of Internet Explorer (all versions) that will always look at the content of any downloadable file
as make an assessment whether to treat the file as an ASCII or binary file. Unfortunately the configuration file is
always treated as ASCII and the browser attempts to display it instead of downloading it. Firefox (all versions)
makes no such assumptions.
15
The configuration file format is MAC-mm-mm-mm_IP-iii-iii-iii-iii.cfg where mm and iii are the lower 3 bytes of the
MAC address and the unit IP address respectively.
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Figure 37 Save Configuration File Screen
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The configuration file is encoded using an ASCII encoding scheme. An example is show in
Figure 38.
Figure 38 PTP 500 Example Configuration File
CAUTION: The configuration file is currently restricted to a single software version and can
only be restored into a wireless unit operating the software version indicated in the configuration
file header.
The configuration file can also be used when swapping out a faulty wireless unit. If one of the
wireless units is replaced on a wireless link a configuration file captured from the faulty unit can
be uploaded into the new unit to speed up replacement. It should be noted that when placing
a configuration file into a wireless unit with a different MAC Address the license key will not be
restored and may need to be entered. This can be obtained either from the Quick Start Guide
supplied with the replacement wireless unit or directly from Motorola. Note that the target MAC
address at the other end needs to be changed to ensure that it is using the MAC address of the
replaced unit.
The restoration of configuration files can be performed using the Restore configuration tool. Using
the browser button to locate the configuration file you wish to restore then click the ‘Restore
Configuration File and Reboot’ button (Figure 39). The user will then be prompted to confirm
the action (
Figure 40)
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Figure 39 Restore Configuration File Pop Up Screen
Figure 40 Reset Configuration and Reboot Confirmation Pop-up
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On confirmation the PTP 500 Series Bridge will:
• Upload the configuration file
• Perform data integrity checking
• Erase previous configuration
• Apply the new configuration
• Restart
After the unit has restarted the entire configuration from the configuration file will now be active.
Note: The IP address of the unit may have also been changed. The user can check the new IP
address by reading the header of the configuration file, Figure 38.
CAUTION: A reboot is always required to restore a configuration file.
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8.3.2Statistics Page
The 500 Series bridge statistics page is designed to display some key statistics of the Ethernet
Bridge and the underlying wireless performance.
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Figure 41 System Statistics
Wireless Tx Packets: This displays the total number of good packets the bridge has sent for
transmission by the wireless interface16.
Wireless Rx Packets: This displays the total number of good packets the bridge has received
from the wireless interface. See footnote 16 “number of packets”.
16
The number in between brackets displays the number of packets received since the last page refresh.
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Ethernet Tx Packets: This displays the total number of good packets the bridge has sent for
transmission by the local Ethernet interface. . See footnote 16 “number of packets”.
Ethernet Rx Packets: This displays the total number of good packets the bridge has received
from the local Ethernet interface. . See note See footnote 16 “number of packets”.
Packets To Internal Stack: This displays the total number of good packets the bridge has transmitted to the internal stack (e.g., ARP requests, PING requests, HTTP requests). See footnote 16
“number of packets”.
Packets From Internal Stack: This displays the total number of good packets the bridge has
received from the internal stack (e.g. ARP responses, PING replies, HTTP responses). See
footnote 16 “number of packets”.
Transmit Data Rate: The data rate in the transmit direction, expressed in Mbps and presented
as: max, mean, min, and latest in an histogram format. The max, min and latest are true
instantaneous measurements; the mean is the mean of a set of one second means. See footnote 10
“histograms”. Expected data rates can be found in Section 14 “Data Rate Calculations”.
Receive Data Rate: The data rate in the receive direction, expressed in Mbps and presented as:
max, mean, min, and latest in an histogram format. The max, min and latest are true instantaneous
measurements; the mean is the mean of a set of one second means. . See footnote 10 “histograms”.
Expected data rates can be found in Section 14 “Data Rate Calculations”.
Aggregate Data Rate: The sum of the data rate in the directions expressed in Mbps and
presented as: max, mean, min, and latest in an histogram format. The max, min and latest are
true instantaneous measurements; the mean is the mean of a set of one second means. See Note
15. Expected data rates can be found in Section 14 “Data Rate Calculations”.
Link Capacity: The maximum aggregate data capacity available for user traffic under the current
radio link conditions, assuming the units have been connected using Gigabit Ethernet. The sum
of the displayed Transmit and Receive data rates may be lower than this figure if the link isn’t
fully loaded by the current traffic profile.
Transmit Modulation Mode: The modulation mode currently being used on the transmit
channel. The number in brackets after the modulation mode and coding rate string is the effective
data rate available to all MAC layer protocols. List of all the modulation modes can be found
in Section 14 “Data Rate Calculations” where data rate calculations plots are given for each
available modulation mode.
Receive Modulation Mode: The modulation mode currently being used on the receive channel.
The number in brackets after the modulation mode and coding rate string is the effective data rate
available to all MAC layer protocols. List of all the modulation modes can be found in Section 14
“Data Rate Calculations” where data rate calculations plots are given for each available modulation
mode.
Receive Modulation Mode Detail: This supplies the user with information regarding the
receive modulation mode in use. Possible values are:
• Running at maximum receive mode
• Running at user-configured Target Modulation Mode
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• Restricted because Installation is armed
• Restricted because of byte errors on the wireless link
• Restricted because a DFS channel change is in progress
• Restricted due to the low Ethernet link speed
• Limited by the radio conditions
Signal Strength Ratio: The Signal Strength Ratio is the ratio of the power received by the
Vertical / Horizontal receivers and presented as: max, mean, min, and latest in an histogram
format. The max, min and latest are true instantaneous measurements; the mean is the mean of
a set of one second means. See footnote 10 “histograms”.
Wireless Link Availability: Expresses the link availability as a percentage of time since the first
successful registration after a system restart, expressed as a percentage to four decimal places.
Byte Error Ratio: The ratio of detected Byte errors to the total number of bytes since the last
system reboot. This is a true measure of link quality as this measurement is made continually
using null frames when there is no user data to transport.
Code Word Error Ratio: The ratio of uncorrected Codeword errors to the total number of
Codewords, calculated since the last reset of the system counters.
Statistics Page Refresh Period: The statistics page refreshes automatically according to the
setting entered here (in seconds).
Reset System Counters: By pressing this button all counters in the system are reset to zero.
Reset System Histograms: All histograms are reset, and the calculation period is restarted.
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8.3.3Detailed Counters Page
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Figure 42 Detailed Counters Page
The detailed counters page is subdivided into two columns. Column one presents the detailed
statistics for the bridge’s Ethernet interface. Column two relates to the wireless interface.
The Counters have the following definitions:
Tx & Rx Octets: Total number of octets (bytes) transmitted or received over the interface.
Rx Drops: Frames dropped due to lack of receive buffer. This includes packets dropped when
the wireless link cannot transmit packets as quickly as they are being received at the Ethernet
interface.
Rx Packets: Total number of packets received by the interface. This includes both good and bad
packets.
Rx Broadcasts: Total number of good broadcast packets.
Rx Multicasts: Total number of good multicast packets.
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Rx CRC and Align: Total number of packets with CRC or frame alignment errors.
Rx Undersize: Total number of packets received that are less than 64 bytes and have a valid
CRC.
Rx Oversize: Total number of packets received that are greater than the maximum number of
bytes with a valid CRC.
Rx Fragments: Total number of packets that are less than 64 bytes with an invalid CRC (these
packet types are also known as runts).
Rx Jabbers: Total number of packets received that are greater than the maximum number of
bytes with an invalid CRC.
Tx Drops: Total number of frames dropped due excessive collisions, late collision and frame
ageing.
Tx Packets: Total number of packets received by the interface. This includes both good and bad
packets.
Tx Broadcasts: Total number of good broadcast packets.
Tx Multicasts: Total number of good multicast packets.
Tx Collisions: Total number frames experiencing collisions.
Tx FIFO Drops: Total number frames dropped due to lack of capacity in the transmit buffer,
for example when the 500 Series bridge is connected to the local Ethernet at a connection speed
of less than 1 Gbps.
Rx & Tx High Priority: Total number of received or transmitted frames marked as high priority.
Rx & Tx Low Priority: Total number of received or transmitted frames marked as low priority.
Rx & Tx Pause Frames: Total number of received or transmitted pause frames.
Statistics Page Refresh Period: The statistics page refreshes automatically according to the
setting entered here (in seconds).
8.3.4Install Pages
These pages are used during system installation. There follows a description of the install pages
along with their use during the installation configuration process. The actual installation process
is described in Section 8.3.4.1 “Manually Configuring the Wireless Units”.
All wireless links are shipped as paired units. They are pre-configured at the factory so that
they can be installed without the user supplying any configuration. Each wireless link is shipped
with a quick start guide. Attached to the quick start guide is a summary of the pre-configured
configuration data.
committed to the wireless unit’s non-volatile storage.
Table 12 shows a sample link configuration. The values highlighted have been
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Example PTP 500 Series Configuration
Data
For your convenience these two units have been
pre-configured as a link Units
Units:
ODU serial numberODU serial number
0167100000A0016710000096
Ethernet MAC addressEthernet MAC address
00:04:56:10:00:9600:04:56:10:00:A0
Configured as:
MasterSlave
Target MAC addressTarget MAC address
00:04:56:10:00:A000:04:56:10:00:96
License keyLicense Key
0557-D8B0-47A1-B0DD 534F-4F54-D1B0-E2DA
IP AddressIP Address
169.254.1.2169.254.1.1
Table 12 500 Series Bridge
Factory Configuration Values
The factory default configuration is limited in range to 40 Km (25 miles). If you wish to install a
wireless link with a range of > 40 Km (> 25 miles) and < 200 Km (< 124 miles) or < 5 Km (< 3
miles) you must follow the steps in Section 8.3.4.1 “Manually Configuring The Wireless Units”.
The factory default configuration is set to Region 26. Region 26 allows the 500 Series bridge a
maximum transmit power of 25 dBm. If the local regulatory regime limits the maximum transmit
power (EIRP) to less than 25 dBm you should obtain a new license key containing the correct
region code from your local distributor or direct from Motorola. Alternatively in the short term,
you should reduce the maximum transmit power by following the procedures in Section 8.3.4.1
“Manually Configuring The Wireless Units”.
8.3.4.1Manually Configuring The Wireless Units
If the installer / system administrator wishes, they may modify the default installation configuration. If only the IP addresses (network configuration) are incorrect it is recommended that the
values are changed via the configuration menu (Section 8.3.1.2 “LAN Configuration Page”). If
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any other parameters require modification then it is recommended that the system administrator
use the Installation Wizard.
A detailed description of the Installation Wizard follows: The 500 Series bridge operational software
requires a license key to enable the wireless bridging capability and programs region code specific
parameters in to the unit.
Figure 43 License Key Data Entry
A license key is programmed into each unit during production and can be found written on the
Configuration Data Summary Label which is attached to the Quick Install Guide. If subsequently
the license key has been mislaid, replacement keys can be applied for online or via your distributor.
If a valid license key is not detected in the unit’s non-volatile memory then the user is prompted
to enter a valid key. It should be noted that 500 Series bridge units are shipped as link pairs and,
as such, valid license keys are entered during the production process. To enter a license key simply
type or paste the license key into the data entry box (Figure 43) and click the ‘validate license
key’ button.
8.3.4.2Internet Protocol Configuration
Step 1 of the installation wizard requires the installer to enter the Internet Protocol (IP) configuration.
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Figure 44 Installation Wizard Internet Protocol Configuration
IP Address:Internet protocol (IP) address. This address is used by the family of Internet protocols
to uniquely identify this unit on a network.
Subnet Mask:A subnet allows the flow of network traffic between hosts to be segregated based on
a network configuration. By organizing hosts into logical groups, subnetting can improve network
security and performance. Gateway IP Address: The IP address of a computer / router on the
current network that acts as a gateway. A gateway acts as an entrance / exit to packets from / to
other networks.
Use VLAN Management Interface:Controls whether the management interfaces (HTTP/SNMP
/SMTP/SNTP) use a VLAN. Selecting this option presents the user with extra fields in which to
enter the Management VLAN ID, Priority and whether to validate the VLAN ID. If the user
modifies this control, a warning dialog is displayed see Figure 45.
Telecoms Interface This allows the activation of the 500 Series bridge telecoms interface. If the
selection options are disabled, T1 or E1 note mixed T1/E1 configurations are not permitted.
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Once complete, click the ‘Submit Internet Protocol Configuration’ button or the ‘Next’ link.
8.3.4.3Wireless Configuration
Step 2 of the installation wizard requires the installer to enter the wireless configuration parameters.
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Figure 45 VLAN Warning
Figure 46 5.8 GHz and 5.4 GHz Variants -
Installation Wizard Wireless Configuration
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Target MAC Address:It is the MAC Address of the peer unit that will be at the other end of
the wireless link. This is used by the system to ensure the unit establishes a wireless link to the
correct peer.
The MAC Address can be found embedded within the serial number of the unit. The last six
characters of the serial number are the last three bytes of the unit’s MAC address. (Note: A PTP
500 Series system is shipped as a pair of units with pre-loaded correct MAC addresses. Target
MAC addresses will only need to be entered if an existing unit has to be replaced in the field or
the units configuration has been erased).
Master Slave Mode:At this point it is necessary to decide which end will designate a Master.
The Master unit is the controlling unit with respect to the point-to-point link and its maintenance.
The master transmits until the link is made, while the Slave listens for its peer and only transmits
when the peer has been identified.
Link Mode Optimization:Optimizes the link behavior according to the type of traffic that will
be bridged. There are two modes to choose from: IP and TDM.
In IP Mode, the PTP 500 product runs an Adaptive TDD scheme. Basically an unloaded link
runs 10:10 mode (10 OFDM bursts alternately in each direction). A sustained traffic load in one
direction for example may cause a threshold to be reached where the TDD mode automatically
adapts to say 20:10. If the load continues to increase, then the TDD structure may adapt even
further through 30:10 to 40:10. This is a state of maximum link asymmetry (40 OFDM bursts
in one direction compared with 10 in the other). If the load increases in BOTH directions, then
the TDD structure can adapt from 10:10, through 20:20, 30:30 and finally 40:40. This is a state
of maximum aggregate throughput. So if three out of these combinations are considered; 10:10,
40:10 and 40:40 they would give the following characteristics:
10:10: equal performance in each direction, lowest aggregate throughput and lowest Latency.
40:10: achieves maximum one way throughput performance, to the detriment of both latency and
throughput in the opposite direction.
40:40: Maximum link aggregate rate, balanced performance in each direction, higher latency.
Note that there is an engineering trade-off between the flexibility of ATDD and Latency as follows:
When the TDD structure changes, there will be a short term impact on Latency for a few Frames.
This would not affect the steady state long term average latency, but could be recorded as a
Maximum latency. This affect may be amplified for short Latency tests or if the traffic loading
is oscillating either side of a boundary condition. As the TDD burst length increases, Traffic in
each direction will have to wait longer before a Transmit window is available, but more data can
be sent during the burst. There is an impact on latency but it varies depending upon installation
range, Frame size and modulation mode.
In TDM mode, two major differences in link behaviour occur compared with IP mode. First the
TDD structure is fixed symmetrically. Either 10:10, 20:20, 30:30 or 40:40 based upon the installed
range.
Secondly, the point at which a modulation mode changes for given RF conditions is more conservative. In practice, this means that the link will typically stay in a lower modulation mode, but
with increased tolerance to RF variability.
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Depending upon the link characteristic that the customer requires, this may very well be the best
choice. It increases consistency of link performance and equality in each direction as a trade-off
against maximum throughput.
Tx Max Power:This attribute controls the maximum transmit power the unit is permitted to
use when installing and executing the wireless link. The maximum setting for a particular region
or country is controlled by the License Key.
Platform Variant:Chooses between an integrated unit or a connectorized unit that requires an
external antenna.
Channel Bandwidth:Users can choose a variable channel bandwidth for the available spectrum.
Value is 15 MHz.
Spectrum Management Control:Is used to configure the PTP 500 Series Bridge’s Spectrum
Management features, see Section 8.3.7 “Spectrum Management” for more details. i-DFS is the
abbreviation for intelligent Dynamic Frequency Selection. This feature continually monitors the
spectrum looking for the channel with the lowest level of on channel and co-channel interference.
Fixed frequency mode allows the installer to fix transmit and receive frequencies on the units. The
frequencies may be configured symmetrically or asymmetrically.
Lower Center Frequency:The software for the PTP 500 Series Bridge allows a user to optionally
adjust the channel center frequencies. Changing the Lower Center Frequency attribute causes all
channel center frequencies to be offset. It effectively slides the channelization up or down. See
Sections Section 5.5 “5.4 GHz Specific Frequency Planning Considerations” and Section 5.6
“5.8 GHz Specific Frequency Planning Considerations” depending on the frequency variant.
Warning:The lower center frequency attribute must be configured to the same value for both
the master and slave. Failure to do so will cause the wireless link to fail reestablishment. The only
way to recover from this situation is to modify the Lower Center Frequency attribute so that they
are identical on both the master and slave unit.
Fixed Transmit Frequency, Fixed Receive Frequency:The software for the PTP 500 Series Bridge allows a user to optionally fix the Transmit and the Receive frequencies for a wireless
link. The settings must be compatible at each end of the link. Once configured the spectrum
management software will not attempt to move the wireless link to a channel with lower co or
adjacent channel interference. Therefore this mode of operation is only recommended for deployments where the installer has a good understanding of the prevailing interference environment.
Figure 47 shows a sample fixed frequency configuration for a 30 MHz channel bandwidth. In the
example the lower center frequency is set to its default values and the Fixed Transmit Frequency
is set to 5735 MHz and the Fixed Receive Frequency is set to 5735 MHz. Care must be taken
when configuring the Fixed Transmit and Receive Frequencies to ensure that both frequencies are
on the same 5 MHz channel raster as the Lower Center Frequency. For example both the Fixed
Transmit and Receive Frequencies must be a multiple of 5 MHz from the Lower Center Frequency
(5740 = 5735 + 5 MHz) and (5745 = 5735 + 5 MHz x 2). Please note that there is a raster that
limits the selection of the Rx frequency based upon the setting of the Tx frequency, and that the
list of options presented in the fixed Tx frequency box is limited to that raster.
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Figure 47 5.8 GHz and 5.4 GHz Variants - Fixed Frequency Operation
Installation Tones:Where the use of audio installation tones is not required this control allows the
installer to optionally disable the tone generator during the installation process. Once the installer
is satisfied with the wireless configuration options then the “Submit Wireless Configuration” button
or the “Next” link should be clicked.
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Figure 48 5.8 GHz and 5.4 GHz Variants -
Installation Wizard Confirm Configuration
If the settings are correct and appropriate, click the “Confirm Configuration, Arm Installation and
Reboot” button. The user will now be prompted to confirm the action (Figure 49).
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Figure 49 Reboot Confirmation Pop Up
All the attributes are committed to non-volatile memory. Immediately following the write to nonvolatile memory the unit is reset. Note: If you have changed the Ethernet parameters you must
reconnect using the correct network and address settings.
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8.3.4.4Disarm
Step 5 of the installation wizard is the disarm phase.
Once Section 8.3.4.3 “Wireless Configuration” is complete pressing the “Disarm Installation
Agent” button completes the installation process17and the audible installation tone will be
switched off. If the installer wishes to modify the installation configuration then the ‘Back’ link
can be used to access the installation wizard steps described above.
After disarming the wireless link the user is presented with one of two possible configuration
pages, see Figure 52 and Figure 51. The screen presents hyperlinks to the main configuration
and spectrum management pages.
Figure 51 Optional Post Disarm Configuration 2
Figure 52 Optional Post Disarm Configuration 1
After installation the system administrator may wish to modify the wireless units descriptive configuration (link name and link location). In addition the system administrator may wish to change
the spectrum management configuration of the wireless unit, or look at the analysis of the 5.8 GHz
spectrum to see if the automatic channel selection is appropriate for the system administrator’s
network. It is also recommended that a backup copy of the wireless units configuration is taken.
Hyperlinks are provided on the post disarm page for ease of use.
17
The installation process is completed when both ends of the link are ‘disarmed’.
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8.3.5Graphical Install
To aid the installation of wireless links two graphical installation aids have been introduced in this
500 Series system version.
• A PDA installation screen
• A larger installation screen available from the main HTTP management interface.
The design of the installation screen has been deliberately kept simple and uncluttered. An example
of the installation screen is shown in Figure 53. Both the PDA and the large format installation
screen have the same content and only differ in size. The PDA installation screen is 232 by 220
pixels to be compatible with the typical size of a PDA screen.
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Figure 53 Graphical Installation Screen
The screen displays the receive power over the last three minutes. This will allow the installer
to slowly sweep the antenna during installation and monitor the variation in signal strength with
angular position. The screen automatically refreshes every three seconds.
The screen also displays the current state of the wireless link in two ways. First, the actual state
of the wireless link is written in the top left corner of the screen. The instantaneous receive power
bar also encodes the state of the wireless link using green to signify that the wireless link is up and
red for all other states.
For the more technically aware, the installation metric is simply the instantaneous receive power
in dBm + 100.
The PDA installation tool is accessed via a hidden URL http://<ip-address>/pda.cgi. It should
be noted that this link is only available after the user has logged in as system administrator.
The large screen version of the graphical user interface is available as a submenu option of the
installation wizard.
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8.3.6Software Upgrade
The 500 Series system has two software image banks; one is a fixed image which is stored in
protected non-volatile memory and cannot be modified by the user. The second bank is used by
the system administrator to upgrade the firmware when necessary. Figure 54 shows the main
software upgrade web page.
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Figure 54 Software Upgrade
The ‘Fixed’ or ‘Recovery’ image is used by the System Administrator to:
• Reset Ethernet configuration to default settings
• Erase Configuration
• Upgrade software
For a full description of the Recovery image see Section 9 “Recovery Mode”.
The software upgrade pages are used to update a unit’s operational software. The software image
to be uploaded should be downloaded to local storage from the Motorola web site. The software
image is delivered by Motorola as a compressed zip file. Once the zip file has been downloaded,
the user should extract the PTP 500 Series Software image, identifiable by its ‘.dld’ file extension.
The first step (Figure 54) is to use the “Browse” button to locate the software image previously
downloaded to local storage from the Motorola web site. Once the image is located, the user should
press the “Upload image to wireless unit” button to start the software upgrade process18.
18
During the software upgrade process, ensure that the remote end is upgraded first using the wireless connection and
then the local end can be upgraded.
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The software image will now be uploaded to the unit. This upload should only take a few seconds.
Once complete the image is verified and validated to ensure that no errors occurred during transfer
and that the image is valid to run on the current platform. If there are any problems a warning
screen will appear.
The unit being upgraded will now display information about the build it currently has stored in
the image bank and the one that’s just been uploaded. If the image is not the right one, the user
has the option to go back and reload a new image. (See Figure 55)
Figure 55 Software Upgrade Image Check
The user should ensure that the correct image is shown before pressing the “Program Software
Image into Non-Volatile Memory” button. Once this button has been pressed the image is stored
into non-volatile memory, this process can take up to 60 seconds and must not be interrupted.
If the upgrade process is interrupted during the erasure of the image bank, or during the reprogramming of the image bank, the image bank will be left in a corrupt state. If this occurs the
software must be reloaded. All software images that are stored in non-volatile memory are protected via the use of CRCs. If the software detects an invalid CRC the image bank is marked as
‘corrupt’ and the 500 Series bridge boot code will boot the fixed software image. If this occurs the
user must attempt to reload the correct version of software.
During the write process the progress of the upgrade is displayed on the progress tracking page
(Figure 56). The upgrade process should not be interrupted. Interruption of this process can
result in a corrupt main software image, which will result in the recovery image been booted at
the next reset cycle.
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Figure 56 Software Download Progress Indicator
Figure 57 Software Upgrade Complete
When the software image has been written to non-volatile memory Figure 57 will be displayed
showing the status of the software upload.
Reboot the unit by clicking the “Reboot Wireless Unit” button. You will be asked to confirm this
action as shown in
Figure 58.
Figure 58 Reboot Confirmation Pop Up
This will reboot the unit, taking up to 120 seconds. During this time you will not be able to
communicate with the unit.
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If you cannot communicate with the unit after 120 seconds, this could indicate a problem with the
memory update process. Under these circumstances the user should enter “Recovery Mode”, see
Section 9 “Recovery Mode”.
After the reboot the user should check that the required software image is loaded and running.
NOTE: Please ensure that you are upgrading the correct units. Units cannot be downgraded..
8.3.7Spectrum Management
Spectrum Management Selection is the PTP 500 Series Bridge feature that monitors the available
wireless spectrum and directs both ends of the wireless link to operate on a channel with a minimum
level of co-channel and adjacent channel interference.
8.3.7.1Wireless Channels
The PTP 500 Series Bridge operates using a set of predefined overlapping channels. There are a
different number of channels, depending on the raster mode selected. Each channel occupies 15
MHz of wireless spectrum and is offset in center frequency from its neighboring channel by 5 MHz.
It is important to note that adjacent channels on the Spectrum management display have a 5 MHz
overlap to the adjacent channel.
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The default channelization can be modified by varying the lower center frequency attribute in
the installation wizard - see Section 8.3.4.3 “Wireless Configuration”. See Section 5 “General
Considerations” for more detail.
8.3.7.2Spectrum Management Measurements
The 500 Series Bridge performs two mean signal measurements per TDD cycle, per channel. This
mean measurement represents the mean received signal power for the 40 microseconds measurement
period.
The Spectrum Management algorithm collects measurements equally from all channels.
This process is called the Channel Availability Check (hereafter referred to by the acronym CAC).
The CAC uses a round-robin channel selection process to collect an equal amount of measurements
from each channel. It is important to note that the CAC measurement process is not altered by
the channel barring process. Measurements are still collected for all channels irrespective of the
number of barred channels.
8.3.7.3Measurement Analysis
Spectrum Management uses statistical analysis to process the received peak and mean measurement. The statistical analysis is based on a fixed, one minute, measurement quantization period.
Spectrum Management collects data for the specified quantization period and only at the end of
the period is the statistical analysis performed.
The analysis produces three key metrics for each channel:
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• Peak of Means
• 99.9% Percentile of the Means
• Mean of Means
Peak of Means:is the largest mean interference measurement encountered during the quantization
period. The peak of means is similar to the peak of peaks and is useful for detecting slightly longer
duration spikes in the interference environment. 99.9% Percentile of the Means is the value of
mean interference measurement which 99.9% of all mean measurements fall below, during the
quantization period. The 99.9% percentile metric is useful for detecting short duration repetitive
interference that by its very nature has a minimal effect of the mean of means.
Mean of Means:is the arithmetic mean19of the measured means during a quantization period.
The mean of means is a coarse measure of signal interference and gives an indication of the
average interference level measured during the quantization period. The metric is not very good
at predicting intermittent interference and is included to show the spread between the mean of
means, the 99.9% percentile and the peak of means.
Important Note:Spectrum Management uses the 99.9% percentile as the prime interference
measurement. All subsequent references to interference level refer to this percentile measurement.
The display of statistical measurement on the spectrum management page always shows a statistical
summary of all channel measurement. The statistical summary is controlled by the Statistics
Window attribute. This attribute defaults to a value of twenty minutes, which means that the
mean and percentile values displayed for each channel are calculated over the 20 minute period.
All channel decisions are made using the values computed over the statistics window period.
The Spectrum Management operates in a master / slave relationship. The master is assumed to be
the link master configured during installation. All Spectrum Management configuration changes
MUST be performed from the master. To enforce this, the Spectrum Management web page has
a different appearance depending if you are viewing the data from the master or slave.
All configuration changes are applied at the master only. These changes are then messaged from
the master to the slave. Any Spectrum Management configuration messages received at the slave
are stored in non-volatile memory. This enables both master and slave to keep identical copies of
Spectrum Management configuration data in their non-volatile memories. It is therefore possible
to swap master and slave roles on an active Point-to-Point link without modifying Spectrum
Management configuration.
19
The arithmetic mean is the true power mean and not the mean of the values expressed in dBm.
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Figure 59 Spectrum Management as seen from the Master
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