Motorola 89FT7631 Users manual
Draft for Regulatory Approva l
Supplement to the Canopy System Release 8 User Guide
PMP 400 Series Networks
PTP 200 Series Bridges
Issue 3
January 2009
PMP 400 and PTP 200 Series Canopy User Guide Supplement
Issue 3, January 2009 Page 2 of 45
Notices
See important safety notice on exposure distance in Section 6.3 on page 40.
See important regulatory and legal notices in Section 2 on page 6.
Trademarks, Product Names, and Service Names
MOTOROLA, the stylized M Logo, Canopy, and all other trademarks indicated as such herein are
registered trademarks of Motorola, Inc. ® Reg. US Pat & Tm. Office. MOTOwi4 is a trademark of
Motorola, Inc. All other product or service names are the property of their respective owners.
© 2009 Motorola, Inc. All rights reserved
http://www.motorola.com/canopy
PMP 400 and PTP 200 Series Canopy User Guide Supplement
Issue 3, January 2009 Page 3 of 45
Table of Contents
1 Introduction ............................................................................................................... 4
2 Product Description .................................................................................................. 6
3 Planning ................................................................................................................... 13
4 Configuring.............................................................................................................. 17
5 Installation ............................................................................................................... 29
6 Regulatory and Legal Notices ............................................................................... 36
List of Tables
Table 1: Products and Model Numbers ........................................................................... 6
Table 2: Performance Details........................................................................................ 12
Table 3: 5.4 GHz Channel Center Frequencies, by Region ........................................... 13
Table 4: 4.9 GHz Channel Center Frequencies............................................................. 13
Table 5: Control Slot Settings........................................................................................ 20
Table 6: Release 8.4 Operation based on Region Code ............................................... 21
Table 7: US FCC IDs and Industry Canada Certification Numbers and Covered
Configurations ........................................................................................................ 37
Table 8: Disclosure Table ............................................................................................. 40
Table 9: Exposure Separation Distances ...................................................................... 40
Table 10: Calculated Exposure Distances and Power Compliance Margins .................. 41
List of Figures
Figure 1: Radio (with or without integrated antenna) 7
Figure 2: PMP 54400 AP with connectorized radio and antenna 7
Figure 3: PMP 49400 AP with connectorized radio and antenna 8
Figure 4: LOS, nLOS, and NLOS 9
Figure 5: Dynamic Rate Adapt on AP "Configuration => General" page 18
Figure 6: Region Code on AP “Configuration => General” page 24
Figure 7: Configured Region Code on SM Configuration => General page 25
Figure 8: Active Region Code on SM Home => General Status page 25
Figure 9: Ground lug highlighted on AP 34
PMP 400 and PTP 200 Series Canopy User Guide Supplement
Issue 3, January 2009 Page 4 of 45
1 Introduction
This guide provides product description, planning, configuration, and installation information
specific to the PMP 400 Series networks and PTP 200 Series bridges. It should be used along
with the Canopy System Release 8 User Guide, which covers general information, including all
network features, RF control features, and GUI (Graphical User Interface) features common
across PMP 100, 200 and 400 Series networks and PTP 100 and 200 Series bridges. The
Canopy System Release 8 User Guide is available from the “User Guides” section of the Canopy
Document Library, http://motorola.canopywireless.com/support/library/?region=1&cat=8.
This guide assumes that the reader has general RF (Radio Frequency) and Internet Protocol (IP)
knowledge and background.
This issue, Issue 2, is consistent with features provided by Canopy Release 8.4.3. Separate
Release Notes for Canopy Software Release 8.4.3 are available and include open issues and
other notes.
1.1 ABBREVIATIONS
The following abbreviations may be used in these notes:
1X
1X operation, with typical max aggregate (up and down)
throughput of 7 Mbps (2 Mbps for 900 MHz)
2X
2X operation, with typical max aggregate (up and down)
throughput of 14 Mbps (4 Mbps for 900 MHz)
3X
3X operation, with typical max aggregate (up and down)
throughput of over 20 Mbps
AP
Access Point Module
BH
Backhaul Module, either timing master or timing slave
BHM
Backhaul Module – timing master
BHS
Backhaul Module – timing slave
CMM
Cluster Management Module
CNUT
Canopy Network Updater Tool
DFS
Dynamic Frequency Selection for radar avoidance
EIRP
Equivalent Isotropically Radiated Power
ETSI
European Telecommunications Standards Institute
FSK
Frequency Shift Keying
MIB
Management Information Base for SNMP
OFDM
Orthogonal Frequency Division Multiplexing
PtP
Point-to-Point (Backhauls)
PtMP
Point-to-Multi-Point (AP to SMs)
QAM
Quadrature Amplitude Modulation
QPSK
Quadrature Phase Shift Keying
RF
Radio Frequency
SM
Subscriber Module
1.2 DOCUMENT CHANGE HISTORY
Issue 1
First Issue
Issue 2
Significant changes for:
PMP 400 and PTP 200 Series Canopy User Guide Supplement
Issue 3, January 2009 Page 5 of 45
• PTP 200 Series bridges (BHs)
• Products using AES encryption
• Release 8.4.3 features
Issue 3
Added PMP 49400 APs and SMs (4.9 GHz public safety
band)
1.3 FEEDBACK ON DOCUMENTATION
Is this document accurate, complete, and clear? How can it be improved? Please send your
feedback on Canopy documentation to technical-documentation@canopywireless.com.
1.4 TECHNICAL SUPPORT
Tip! Don’t clear the Event Log after you encounter issues – it may be useful to Technical
Support if you need to escalate the issue.
Here is the escalation path for resolution of a problem:
1. Check documentation:
This document
Canopy System Release 8 User’s Guide, available at
http://motorola.canopywireless.com/support/library/
2. Consider checking the Canopy Community Forum at
http://motorola.canopywireless.com/support/community.
3. Consider checking the Canopy Knowledge Base at
http://motorola.canopywireless.com/support/knowledge/
4. Escalate the problem to your Canopy supplier or reseller.
5. Escalate the problem to Canopy Technical Support or other designated Tier 3
technical support:
Worldwide Canopy Technical Support
email: technical-support@canopywireless.com
1-888-605-2552 or +1 217 824 9742
Canopy Technical Support, Europe
email: essc@motorola.com
+44 (0)1793 564680
Calls are logged 24 x 7, cases are worked Mon-Fri 09:00 - 17:00 GMT
When you send e-mail or call, please include, as appropriate, software release on each
module, IP addresses, MAC addresses, and features enabled, like NAT, VLAN, high
priority channel, or CIR. You may be asked to run the Support Tool on CNUT or Prizm to
provide a complete network picture.
PMP 400 and PTP 200 Series Canopy User Guide Supplement
Issue 3, January 2009 Page 6 of 45
2 Product Description
PMP 400 Series networks and PTP 200 Series bridges add OFDM-based (Orthogonal Frequency
Division Multiplexing) products to the Canopy family.
• SMs are available with either an integrated antenna or an external N-type connector
on a short length of coaxial cable for connecting to a connectorized antenna.
• APs are always connectorized, and sold either with a connectorized antenna as a kit,
or with no antenna.
• BHs are available with either an integrated antenna or an external N-type connector
on a short length of coaxial cable for connecting to a connectorized antenna.
PMP 400 Series networks are available in multiple bands:
• PMP 54400 APs and SMs provide connectivity in the unlicensed 5.4 GHz band.
• PMP 49400 APs and SMs provide connectivity in the licensed 4.9 GHz band
allocated to public safety services. State and local governmental entities are eligible
to hold 4.9 GHz licenses.
Table 1 shows the Motorola PMP 400 Series and PTP 200 Series products available.
Table 1: Products and Model Numbers
Model
Number
Name
Module
DES
or
AES
Antenna Type
Antenna
included
?
Picture
Specs
5440SM
PMP 54400
5.4 GHz OFDM SM
DES
Integrated
Yes
Figure 1
2.7.2
5441SM
PMP 54400
5.4 GHz OFDM SM
AES
Integrated
Yes
Figure 1
2.7.2
5440SMC
PMP 54400
5.4 GHz OFDM SM
DES
Connectorized
No
Figure 1
2.7.3
5441SMC
PMP 54400
5.4 GHz OFDM SM
AES
Connectorized
No
Figure 1
2.7.3
5440AP
PMP 54400
5.4 GHz OFDM AP
DES
Connectorized
Yes
Figure 2
2.7.4
5441AP
PMP 54400
5.4 GHz OFDM AP
AES
Connectorized
Yes
Figure 2
2.7.4
5440APC
PMP 54400
5.4 GHz OFDM AP
DES
Connectorized
No
Figure 1
2.7.3
5441APC
PMP 54400
5.4 GHz OFDM AP
AES
Connectorized
No
Figure 1
2.7.3
5440BH
PTP 54200
5.4 GHz OFDM BH
DES
Integrated
Yes
Figure 1
2.7.2
5441BH
PTP 54200
5.4 GHz OFDM BH
AES
Integrated
Yes
Figure 1
2.7.2
5440BHC
PTP 54200
5.4 GHz OFDM BH
DES
Connectorized
No
Figure 1
2.7.3
5441BHC
PTP 54200
5.4 GHz OFDM BH
AES
Connectorized
No
Figure 1
2.7.3
4940SM
PMP 49400
4.9 GHz OFDM SM
DES
Integrated
Yes
Figure 1
2.7.2
4941SM
PMP 49400
4.9 GHz OFDM SM
AES
Integrated
Yes
Figure 1
2.7.2
4940SMC
PMP 49400
4.9 GHz OFDM SM
DES
Connectorized
No
Figure 1
2.7.3
4941SMC
PMP 49400
4.9 GHz OFDM SM
AES
Connectorized
No
Figure 1
2.7.3
4940AP
PMP 49400
4.9 GHz OFDM AP
DES
Connectorized
Yes
Figure 3
2.7.4
4941AP
PMP 49400
4.9 GHz OFDM AP
AES
Connectorized
Yes
Figure 3
2.7.4
4940APC
PMP 49400
4.9 GHz OFDM AP
DES
Connectorized
No
Figure 1
2.7.3
PMP 400 and PTP 200 Series Canopy User Guide Supplement
Issue 3, January 2009 Page 7 of 45
Model
Number
Name
Module
DES
or
AES
Antenna Type
Antenna
included
?
Picture
Specs
4941APC
PMP 49400
4.9 GHz OFDM AP
AES
Connectorized
No
Figure 1
2.7.3
Figure 1: Radio (with or without integrated antenna)
Figure 2: PMP 54400 AP with connectorized radio and antenna
PMP 400 and PTP 200 Series Canopy User Guide Supplement
Issue 3, January 2009 Page 8 of 45
Figure 3: PMP 49400 AP with connectorized radio and antenna
A Canopy CMMmicro or CMM4 provides synchronization and power to the PMP 400 Series APs
and PTP 200 Series BHMs. A 600SSC surge suppressor, a successor to the 300SS and 600SSB
surge suppressors, provides over-voltage and over-current protection to APs, SMs, and BHs in
various configurations.
2.1 TECHNOLOGY AND BENEFITS
These radios automatically select QPSK (Quadrature Phase Shift Keying), 16-QAM (Quadrature
Amplitude Modulation), or 64-QAM based on RF environment to provide 1X, 2X, and 3X
operation, respectively. This provides 3 speeds and a throughput of over 20 Mbps aggregate
(sum of up plus down) compared to FSK Canopy products with 2 speeds and a throughput of up
to 14 Mbps.
The OFDM radios feature lower receive sensitivity, FEC (Forward Error Correction), and higher
antenna gain, all of which combine to provide longer range within regulatory-specified EIRP
(Equivalent Isotropic Radiated Power).
Details on performance are listed in Table 2 on page 12.
The PMP 400 and PTP 200 Series radios use an OFDM physical layer with 10 MHz channels and
256 sub-carriers. Due to the different carrier and modulation schemes between these OFDM
radios and FSK Canopy radios, the two do not interoperate over the air. For example, an OFDM
SM cannot connect to an FSK AP.
PMP 400 and PTP 200 Series Canopy User Guide Supplement
Issue 3, January 2009 Page 9 of 45
2.1.1 NLOS and nLOS Benefits and Limitations
The use of OFDM technology will help in many cases of NLOS (Non Line-of-Sight) and nLOS
near Line-of-Sight (nLOS) links. LOS (Line-of-Sight ) means the installer can see the AP from the
SM and the first Fresnel zone is clear. An example of nLOS is when the installer can see the AP
from the SM, but a portion of the first Fresnel is blocked. An example of NLOS is when the
installer cannot see the AP from the SM, and a portion or even much of the first Fresnel is
blocked, but subsequent Fresnel zones are open. Figure 4 shows examples of such links.
Figure 4: LOS, nLOS, and NLOS
Whereas multi-pathing degrades a link in some technologies, like FSK, OFDM can often use
multi-pathing to advantage to overcome nLOS and NLOS, especially in cases where the Fresnel
zone is only partially blocked by buildings, “urban canyons”, or foliage. OFDM tends to help
especially when obstacles are near the middle of the link, and less so when the obstacles are
very near the SM, AP, or BH.
However, attenuation through walls and trees is substantial for any use of the 5.4 GHz or 4.9 GHz
frequency bands. Even with OFDM, these products should not be expected to penetrate walls or
extensive trees and foliage.
2.2 APPLICATIONS
Applications for the PMP 54400 and PTP 54200 Series systems include
• High throughput enterprise applications
• NLOS/nLOS video surveillance in metro areas
• Extend networks into urban areas
• Extend networks into areas with foliage
Applications for the PMP 49400 Series systems include
• High throughput licensed network for government applications
• Municipal network - NLOS/nLOS video surveillance in metro areas
• Disaster relief network
• Data service network - extend licensed networks into areas with foliage
PMP 400 and PTP 200 Series Canopy User Guide Supplement
Issue 3, January 2009 Page 10 of 45
2.3 CONFIGURATION OPTIONS – RF, IP, DFS
These systems use the Canopy Media Access Controller (MAC) layer. Settings like Downlink
Data %, Range, and Control Slots are similar to Canopy FSK radios. An AP can communicate to
over 200 SMs, similar to a Canopy FSK AP.
The GUI (Graphical User Interface) is almost identical to Canopy’s, with a few additions to
support OFDM-specific features.
Network features like High Priority using DiffServ, MIR, CIR, NAT, DHCP and VLAN are available
for the PMP 400 and PTP 200 Series OFDM radios, and are configured in the same way as they
are for the PMP 100 and 200 Series and PTP 100 Series radios.
In the 5.4 GHz band, DFS (Dynamic Frequency Selection) is provided for regulatory compliant
operation, and is activated using the “Region Code” feature. Two alternate frequencies can be
configured to provide service in the unlikely case a module detects radar and triggers DFS, the
same as standard Canopy. “External Antenna Gain” may need to be configured consistent with
any antennas used, to avoid making the system overly sensitive to radar detection. “Whitening,” a
technique used to avoid self-interference on Canopy FSK radios is not offered as an option on the
PMP 400 and PTP 200 Series radios, as whitening is not a technology applicable to an OFDM
signal.
2.4 RELEASE MAPPING TO PRODUCTS
Releases run on the various products as follows:
• Release 9.0 or Release 8.2.x runs on Canopy FSK radios (PMP 100 and 200 and
PTP 100 Series radios).
• Release 8.4.x runs on PMP 54400 and PTP 54200 Series OFDM radios.
• “Release 8.3” is not planned to be used for release numbering.
• Release 9.3.1 runs on PMP 49400 Series OFDM radios
2.5 POWER AND GROUNDING
The PMP 400 and PTP 200 Series radios use a 30 VDC nominal power system, instead of the 24
VDC nominal power system used previously in standard Canopy. A new 30 VDC power supply is
available for the CMMmicro, and a new 30 VDC nominal (specified and labeled as 29.5 VDC)
power supply is available for the SM.
The new 30 VDC power supplies can also be used for standard Canopy, and are replacing the 24
VDC power supplies in the Canopy product line.
The PMP 400 and PTP 200 Series radios have slightly higher power use than Canopy FSK
radios, and the higher voltage is needed to carry the higher wattage on cable runs approaching
the 100 meter (328 ft) maximum length. CMMmicro 24 VDC power supplies and the latest version
of SM 24 VDC power supplies can power PMP 400 and PTP 200 Series radios for shorter runs.
Earlier versions of SM 24 VDC power supplies, especially the earlier heavier transformers,
cannot. The best practice is to use 30 VDC power supplies with PMP 400 and PTP 200 Series
radios, and avoid potential issues and cable-length-specific engineering.
Due to the full metallic connection to the tower or support structure through the AP’s antenna or a
connectorized BH’s antenna, grounding of the AP or BH and a 600SSC surge suppressor within 3
ft (1 m) of the AP or BH is strongly recommended to suppress overvoltages and overcurrents,
such as those caused by near-miss lightning. APs and BHs provide a grounding lug for grounding
to the tower or support structure. A pole mount kit is available for the 600SSC, and provides a
grounding lug that can be used for terminating grounding straps from both the 600SSC and the
AP.
PMP 400 and PTP 200 Series Canopy User Guide Supplement
Issue 3, January 2009 Page 11 of 45
2.6 ADMINISTRATION SYSTEMS
Standard Canopy administration systems are used to support the PMP 400 and PTP 200 Series
products, with the only requirement being that the administration systems must be at the
appropriate release level:
• Prizm 3.1 is the element management system for PMP 400 and PTP 200 Series
products. In addition to managing and monitoring Canopy modules, Prizm 3.1 can be
used to update them.
• CNUT 3.1 (Canopy Network Update Tool) is the stand-alone update tool for PMP 400
and PTP 200 Series products for operators not using Prizm.
2.7 TECHNICAL DETAILS, SPECIFICATIONS, PERFORMANCE
PMP 400 and PTP 200 systems consist of radios and antennas available in various
combinations. The following sections list technical details for the radio and for each form factor.
2.7.1 Radio specifications (common to all form factors)
• APs and BHs have settable Transmit Output Power.
• SMs have Auto TPC (Transmit Power Control), set by the AP to provide power
leveling for close-in SMs
• 5.4 GHz radios have a range of -30 to 10 dBm, and a default of 10 dBm.
• 4.9 GHz radios have a range of -30 to 18 dBm, and a default of 18 dBm.
• 12.5 W DC power
2.7.2 Radio with integrated antenna – form factor specifications
• Radio with an integrated, internal antenna
• 18° x 18° 3 dB beam
• 17 dBi gain for antenna at 5.4 GHz. 17 dBi antenna gain plus 10 dBm transmit power
gives the regulatory maximum 27 dBm EIRP.
• 16 dBi gain for antenna at 4.9 GHz. 16 dBi antenna gain plus 18 dBm transmit power
gives 34 dBm EIRP.
• 2.8 lb, 13.25 x 8.25 x 3.75 in (hwd) (~1.3 kg, 34 x 21 x 9.5 cm)
2.7.3 Connectorized radio – form factor specifications
• Connectorized radio only (antenna to be provided by operator) – N-type connector
• 2.8 lb, 13.25 x 8.25 x 3.75 in (hwd) (~1.3 kg, 34 x 21 x 9.5 cm)
2.7.4 Kitted connectorized radio specifications (antenna included) – form factor
specifications
• Connectorized radio and connectorized antenna kitted together – N-type connector
• 90° sectors
• Antenna optimized for system coverage vs system self-interference for 90° sectors (3
dB beam pattern of 60° azimuth by 5° elevation, with near-in null fill)
• 18 dBi gain for antenna at 5.4 GHz. 18 dBi antenna gain minus 1 dB cable loss plus
10 dBm transmit power gives the regulatory max 27 dBm EIRP.
• 17 dBi gain for antenna at 4.9 GHz. 17 dBi antenna gain minus 1 dB cable loss plus
18 dBm transmit power gives 34 dBm EIRP.
• 13 lb, 28 x 8.25 x 11 in (hwd) (~6 kg, 71 x 21 x 28 cm)
PMP 400 and PTP 200 Series Canopy User Guide Supplement
Issue 3, January 2009 Page 12 of 45
2.7.5 System technical details
• Standard Canopy temperature range of -40° C to +55° C
• Latency of 5-7 msec roundtrip
• Products available with either DES or AES encryption
Table 2 shows performance details for the PMP 54400, PTP 54200, and PMP 49400 systems,
with the standard Canopy PMP 54200 5.4 GHz FSK details shown for comparison.
Table 2: Performance Details
Performance Details
Product
Channel
Width
Parameters
1X
2X
3X
Modulation
QPSK
16 QAM
64 QAM
Typical Maximum Range
5 mi/8 km
2.5 mi/4 km
1.25 mi/2 km
Typical Maximum Aggregate
(up+down) Throughput
7 Mbps
14 Mbps
21 Mbps
PMP 54400
and
PTP 54200
(5.4 GHz OFDM)
10 MHz
Nominal Receive Sensitivity
(including FEC)
-89 dBm
-78 dBm
-70 dBm
Modulation
QPSK
16 QAM
64 QAM
Typical Maximum Range
15 mi/24 km
4 mi/6.5 km
1.7 mi/2.7 km
Typical Maximum Aggregate
(up+down) Throughput
7 Mbps
14 Mbps
21 Mbps
PMP 49400
(4.9 GHz OFDM)
10 MHz
Nominal Receive Sensitivity
(including FEC)
-89 dBm
-78 dBm
-70 dBm
Modulation
2-level FSK
4-level FSK
none
Typical Maximum Range
2 mi/3.2 km
1 mi/1.6 km
none
Typical Maximum Aggregate
(up+down) Throughput
7 Mbps
14 Mbps
none
PMP 54200
(5.4 GHz FSK)
(for comparison)
20 MHz
Nominal Receive Sensitivity
-86 dBm
-70 dBm
none
.
PMP 400 and PTP 200 Series Canopy User Guide Supplement
Issue 3, January 2009 Page 13 of 45
3 Planning
PMP 400 and PTP 200 Series systems use a 10 MHz channel size configurable on 5 MHz
centers. This channel size, along with some different characteristics due to the use OFDM carrier
technology and QPSK, 16 QAM, or 64 QAM modulation, supports somewhat different channel
planning than for standard Canopy. (For reference, PMP 100/200 Series uses 20 MHz channels
configurable on 5 MHz centers, single carrier technology, and 2-level and 4-level FSK
modulation.)
3.1 TOWER CHANNEL PLANNING
For a single cluster of 4 APs on a tower, 2-channel re-use with channels on 10 MHz channel
center spacing gives good performance. In channel design parlance, this can be stated as ABAB
channel planning, with no guard band needed between A and B. A typical arrangement might be
to use radios configured for 5480 MHz aimed north and south, and radios configured for 5490
MHz aimed east and west.
(For reference, standard Canopy uses 2-channel re-use with clusters of 6 APs on a tower with
channel center spacing of either 25 MHz for Advantage APs or 20 MHz for non-Advantage APs.
This is ABCABC channel planning, with 5 MHz guard band between the 20 MHz channels for
Advantage APs and no guard band needed for non-Advantage.)
Available 5.4 GHz channel center frequencies for each region are shown in Table 3. These vary
by region due to
• different band edge RF specifications (for example, between Canada/US and
Europe)
• requirements in Europe and Canada to not impinge on the frequencies between 5600
and 5650 MHz, which are frequencies on which some weather radar operate
Table 3: 5.4 GHz Channel Center Frequencies, by Region
Region
Range of Center Frequencies
Available (MHz)
(on 5 MHz centers within this
range, inclusive)
Maximum number of
non-overlapping
channels
US
5480 - 5710
24
Canada
5480 – 5595, 5655 - 5710
18
Europe
5475 - 5595, 5655 - 5715
20
US FSK (for comparison)
5495 - 5705
11
Canada FSK (for
comparison)
5495 - 5575, 5675 - 5705
7
Available 4.9 GHz channel center frequencies are shown in Table 4.
Table 4: 4.9 GHz Channel Center Frequencies
Range of Center Frequencies
Available (MHz)
(on 5 MHz centers within this
range, inclusive)
Maximum number of
non-overlapping
channels
4945 - 4985
5
PMP 400 and PTP 200 Series Canopy User Guide Supplement
Issue 3, January 2009 Page 14 of 45
The best practice for channel planning for APs is to conduct extensive site RF surveys before
choosing channels. For those with the equipment and expertise, use commercial and industrial
spectrum analysis equipment. The PMP 400 and PTP 200 Series APs and SMs do not provide a
spectrum analyzer in the first release (planned for a subsequent release), but standard 5.4 GHz
FSK SMs can be used to give useful information on the RF environment in the planned PMP 400
and PTP 200 Series AP deployment location.
3.2 DOWNTILT
The standard AP antenna produces a 3 db beam elevation (up and down) of 5°, with near-in null
fill that allows good coverage of close-in SMs that otherwise would be affected by the narrow
pattern. This is a narrower pattern than operators may be used to with standard Canopy’s 60° 3
dB beam, and may require downtilt on the antenna. The standard antenna has provision for
measured downtilt. The operator should estimate downtilt based on antenna height above the
service area and using one of the many radio analysis and mapping tools or on-line calculation
tools for calculating downtilt.
3.3 WEATHER RADAR
Spectrum between 5600 and 5650 MHz (sometimes called the “weather notch”) is used by some
weather radar and is not allowed for use by regulations in some regions, including Canada and,
for new equipment, Europe. When the Canopy module is set to one of those regions (configured
on the “Configuration => General” page of the module), it will not allow configuration of the
appropriate frequencies, as shown in Table 3. Even in regions where use of the spectrum
between 5600 and 5650 MHz is allowed, such as the US, the best practice is to not use these
channels if there are any other usable channels available. Only use the channels in this “weather
notch” after performing long-term site surveys (minimum of a week) to ascertain the spectrum is
clear and that there don’t appear to be any weather radar in the area that will cause interference
to your Canopy system.
3.4 RANGE AND THROUGHPUT PLANNING
PMP 400 and PTP 200 Series modules provide up to 21 Mbps aggregate throughput at distances
of 1.25 mi (~1 km) (1.7 mi for 4.9 GHz systems) in RF environments with clear line-of-sight and
low background interference levels. Additional performance details are shown in Table 2 on page
12. RF environments with occluded Fresnel zones or higher background interference levels may
give lower, but still very good, performance, depending on the specifics of the environment.
Similar to standard Canopy, at any given instant, any radios operating at 1X or 2X take more “air
time” to transmit a given amount of data than if they were running at 3X. Similar to standard
Canopy, PMP 400 and PTP 200 Series modules may see reduced total throughput when
handling traffic with a high percentage of small packets.
The effect of this, again similar to standard Canopy, is that at any given instant total throughput
depends on
• Mix of links running at 3X, 2X, and 1X
• Mix of packet sizes
3.5 SPECTRUM ANALYZER
A spectrum analyzer is available on the SM at Tools => Spectrum Analyzer. The spectrum
analyzer is also available on an AP by temporarily converting it to an SM by setting the Device
Type to SM on the AP’s Configuration => General page. The spectrum analyzer works like the
spectrum analyzer in classic FSK SMs.
Spectrum analyzer uses include
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