Cisco Systems 102064 802.11 b/g Radio Module User Manual 1520 ch1

Cisco Systems Inc 802.11 b/g Radio Module 1520 ch1

Manual

CHAPTERCISCO CONFIDENTIAL - Draft 11-1Cisco Aironet 1520 Series Outdoor Mesh Access Point Hardware Installation GuideOL-12632-011OverviewThe Cisco Aironet 1520 Series Outdoor Mesh Access Point (hereafter called the access point) is a wireless device designed for wireless client access, point-to-point bridging, point-to-multipoint bridging, and point-to-multipoint mesh wireless connectivity. The access point is a standalone unit that can be mounted on a streetlight pole or on a building wall or overhang. It is a self-contained outdoor unit that can be configured with a wired backhaul connection to an Ethernet segment for a rooftop deployment or can be configured with a wireless backhaul for a pole-top deployment. The access point can be installed where power is available without the need for a wired network connection.The access point is available in two models: LAP1522 (supports 2.4-GHz and 5-GHz radios) and LAP1521 (supports a 2.4-GHz radio).The access point provides client access and wireless mesh backhaul that supports 6 to 54 Mbps data rates without the need for a license. The LAP1522 model dedicates the 5-GHz radio for backhaul operations to reach a wired network and uses the 2.4-GHz radio for wireless clients. The LAP1521 model uses the 2.4- or 5-GHz radio for both backhaul and wireless clients. The access point can also operate as a relay node for other access points not directly connected to a wired network. Intelligent wireless routing is provided by the patent-pending Adaptive Wireless Path Protocol (AWPP). This enables each access point to identify its neighbors and intelligently choose the optimal path to the wired network by calculating the cost of each path in terms of signal strength and the number of hops required to get to a controller.The access point is configured, monitored, and operated through a Cisco wireless LAN controller (hereafter called a controller) as described in the Cisco Wireless LAN Controller Configuration Guide. The Deployment Guide: Cisco Mesh Networking Solution describes how to plan and initially configure the Cisco Mesh network, which supports wireless point-to-point, point-to-multipoint, and mesh deployments. The controllers use a browser-based management system, a command-line interface (CLI), or the Cisco Wireless Control System (WCS) network management system to manage the controller and the associated access points. The access point is compliant with Wi-Fi Protected Access (WPA2) and employs hardware-based Advanced Encryption Standard (AES) encryption between wireless nodes to provide end-to-end security.This chapter provides information on the following topics:•Main Hardware Features, page 2•Network Configuration Examples, page 6
2OverviewOL-12632-01Main Hardware FeaturesSome of the access point’s main hardware features are listed below:•One or two radios (2.4- and 5-GHz)—see the “Single or Dual Radio Operation” section on page 3•External radio antennas—see the “External Antennas” section on page 3•Multiple power sources—see the “Multiple Power Sources” section on page 4•Rugged metal enclosure—see the “Metal Enclosure” section on page 5•Optional Ethernet ports—see the “Ethernet Ports” section on page 5•Optional cable modem—see the •Optional hardware—see the “Optional Hardware” section on page 6–Cable strand mount kit –Pole mount kit–150 ft (45.72 m) Ethernet outdoor cable•Optional battery backup—future availabilityFigure 1 shows the access point connectors.Figure 1 Access Point Connectors142536
ConnectorsThe optional featues of the access point support these connectors (see Figure 1):•Ethernet (PoE) uplink connector—(type RJ45 with TBD for waterproofing)•Ethernet downlink connector—(type RJ45 with TBD for waterproofing)•Three Type N antenna connectors (2.4-GHz radio)•One Type N antenna connector (5-GHz radio)•Fiber-optic connector—Small form factor pluggable (SFP)•Power-over-cable (POC) connector—(TBD)•AC power connectorSingle or Dual Radio OperationThe access point is available in two models: LAP1522 (supports 2.4-GHz and 5-GHz radios) and LAP1521 (supports a 2.4- or 5-GHz radio). The radios use external antennas (see “External Antennas”).The LAP1522 model supports simultaneous dual-radio operation using a 2.4-GHz 802.11b/g radio and a 5-GHz 802.11a radio. The LAP1521 model supports both mesh backhaul operation and wireless clients using a single 2.4- or 5-GHz radio.The 5-GHz radio incorporates an Unlicensed National Information Infrastructure (UNII) radio transceiver operating in the UNII 5-GHz frequency bands. The 5-GHz radio on the access point is used for backhaul operations to the controller. The 5-GHz radio can also operate in the 4.9-GHz Public Safety band in the United States.Note The 4.9-GHz band requires a license and may be used only by qualified Public Safety operators as defined in section 90.20 of the FCC rules.The 2.4-GHz radio supports three antennas for multi-input, single output (MISO) operation. The radio uses three receivers to support maximum ratio combining (MRC) to enhance receiver performance. MRC is a technique that combines the signals from multiple receivers in a manner to optimize the signals. MRC can provide up to 3 dB of increased receive signal strength. The access point does not support both radios configured for backhaul supportExternal AntennasThe access point is equipped with three N-type radio frequency (RF) connector on the top of the unit for external 2.4-GHz antennas to support multiple input single output (MISO) operation. The LAP1522 model also has one to three N-type RF connectors on the bottom of the unit for external 5-GHz antennas (see Figure 1). When using the optional Cisco compact omnidirectional antennas, the 2.4- and 5-GHz antennas connect directly to the access point. The Cisco omnidirectional antennas use vertical polarization. The access point can also be equipped with specific third-party external antennas (see Table 1 and Table 2), subject to local regulatory requirements. When you are installing third-party antennas, they must be installed with all waterproofing steps recommended by the third-party manufacturer.Note When you mount the access point in an indoor environment, you must also mount the antennas in an indoor environment.WarningOnly trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030
4OverviewOL-12632-01Table 1 and Table 2 lists the supported external antennas for the access point.Multiple Power SourcesThe access point supports these power sources:•Power-over-Ethernet (POE)—1520 power injector•AC power—90 to 480 VAC •Quazi-AC power-over-cable (POC)—40 to 90 V •External 12 VDC•Internal batteryThe access point can be connected to more than one power source. The access point detects the available input sources and switches to the preferred power source using the following default prioitization:•AC power or POC power•External 12VDC power•1250 Power Injetor PoE power•Internal Battery powerNote The power source default prioritization can be user reconfigured.Caution To provide inline PoE, you must use the 1250 power injector. Other power injectors, PoE switches, and 802.3af power sources cannot provide adequate power, which may cause the access point to malfunction and cause over-current conditions at the power source. You must ensure that the switch port connected to the access point has PoE turned off.Caution The power injector and the power module must be used in an indoor environment only.Table 1 External 5-GHz Antennas Part Number Model Gain (dBi)AIR-ANT5180V-N 5-GHz compact omnidirectional11. The compact omnidirectional antennas mount directly on the access point.84.9-GHz compact omnidirectional22. The use of the 4.9-GHz band requires a license and may be used only by qualified Public Safety operators as defined in section 90.20 of the FCC rules.7 AIR-ANT58G10SSA-N 5-GHz sector 9.5 AIR-ANT5114P-N 4.9- to 5-GHz patch214.0 AIR-ANT5117S-N 4.9- to 5-GHz 90-degree sector217.0Table 2 External 2.4-GHz AntennasPart Number Model Gain (dBi)AIR-ANT2450V-N 2.4-GHz compact omnidirectional11. The compact omnidirectional antennas mount directly on the access point.5.5AIR-ANT2480V-N 2.4 GHz omnidirectional 8.0
Caution When the access point is installed outdoors or in a wet or damp location, the AC branch circuit that is powering the access point should be provided with ground fault protection (GFCI), as required by Article 210 of the National Electrical Code (NEC).The AC power cord options are listed below: •40-ft (12.2-m) power cord for light pole installations in the US and Canada.•40-ft (12.2-m) power cord for use outside the US and Canada. One end of the power cord is terminated with an access point AC power connector and the other end is unterminated.•4-ft (1.2-m) streetlight power tap adapter for light pole installations in the US and Canada.Ethernet PortsThe access point supports an Ethernet uplink port and a downlink port. The access point’s Ethernet uplink port uses an RJ-45 connector (with weatherproofing) to link the access point to your10BASE-T, 100BASE-T, or 1000BASE-T network. The Ethernet cable is used to send and receive Ethernet data and to optionally supply inline 56-VDC power from the power injector. The access point’s downlink Ethernet port uses an RJ-45 connector (with weatherproofing) to provide LAN connectivity and IEEE 802.3af power to a peripheral customer device, such as a camera or sensor gateway.The Ethernet MAC addresses are printed on the label on the side of the access point (refer to the “Finding the Product Serial Number - TBD” section on page 13). Tips The access point senses the Ethernet and power signals and automatically switches internal circuitry to match the cable connections.Caution To provide inline PoE, you must use the 1520 power injector. Other power injectors, PoE switches, and 802.3af power sources can not provide adequate power, which may cause the access point to malfunction and cause possible over-current conditions at the power source.Metal EnclosureThe access point uses a metal enclosure that can accommodate both indoor or outdoor operating environments and an industrial temperature operating range of (–40°F (–40°C ) to 131°F (55°C). The access point complies with NEMA Type 4X and IP66 requirements from IEC60529.Note When the access point is mounted indoors, the antennas must also be mounted indoors.Cable Modem
6OverviewOL-12632-01Optional HardwareSome of the access point hardware options are listed below:•Cable modem—DOCSIS 2.0 compatible for direct connection to cable lines.•Fiber optic module—uses Small Form Factor Pluggable (SFP) connections for connection to fiber optic lines.–Supports 100BaseBX modules –Supports 15.5 mi (25 km) of fiber-optic cable.•Pole mount kit (SKU - TBD)—provides hardware for mounting the access point to the top of a metal or wood pole, such as a streetlight pole.•Streetlight power tap adapter (SKU - TBD)—connects to the light control connector on a streetlight pole and provides AC power to the access point.•Outdoor rated Ethernet cable (???)—used to supply Ethernet and optional DC power to the access point.•1520 power injector (SKU - TBD)—provides power-over-Ethernet (PoE) to the access point.•AC power cord (for additional information, refer to the “Multiple Power Sources” section on page 4).•Future availability—battery backup module (80 Watt hour (WHr). The integrated battery can be used to power the unit when external power sources are not available.–Four hour access point operation using two radios at 77oF (25oC)—with PoE output port off–Two hour access point operation using two radios at 77oF (25oC)— with PoE output port on–User installable and replaceable•Network Configuration ExamplesThe access point is a wireless device designed for wireless client access and point-to-point bridging, point-to-multipoint bridging, and point-to-multipoint mesh wireless connectivity. The access point provides 5-GHz backhaul capability to link with another access point to reach a wired network —connection or to provide repeater operations for other access points. The access point plays two primary radio roles: a root access point (hereafter called a RAP) or a non-root access point (hereafter called a MAP). When the access point has a wired Ethernet connection to the controller (through a switch), the radio role is called a RAP. A RAP is a parent node to any bridging or mesh network. A controller can support one or more RAPs, each one parenting the same or different wireless networks. There can be more than one RAP for the same mesh network for redundancy. RAPs also support wireless clients on the band not being used for the backhaul interface.When the access point does not have a wired Ethernet connection to the controller (through a switch), the radio role is called a MAP. The MAPs have a wireless connection (through the backhaul interface) to other MAPs and finally to a RAP with an Ethernet connection through a switch to the controller. MAPs may also have a wired Ethernet connection to a local LAN and serve as a bridge endpoint for that LAN (using a point-to-point or point-to-multipoint bridge connection). MAPs also support wireless clients on the band not used for the backhaul interface.
Wireless BackhaulThe access point supports wireless backhaul capability using the 5-GHz radio to bridge to another access point to reach a wired network connection to a controller (see Figure 2). The access point connected to the wired network is considered a RAP in this configuration. The remote access point is considered a MAP and transfers wireless client traffic to the RAP for transfer to the wired network. Lightweight access point protocol (LWAPP) control traffic is also transferred over this bridged link.Note The LAP 1505 model uses the 2.4-GHz radio for backhaul and wireless client operations.Figure 2 Access Point Backhaul ExamplePoint-to-Point Bridging The access points can be used to extend a remote network by using the 5-GHz backhaul radio to bridge the two network segments as shown in Figure 3. To support Ethernet bridging, you must enable bridging on the controller for each access point.Note The LAP 1505 model uses the 2.4-GHz radio for bridging operations.Wireless client access is supported; however, if bridging between tall buildings, the 2.4-Ghz wireless coverage area may be limited and possibly not suitable for direct wireless client access.Figure 3 Access Point Point-to-Point Bridging Example148438(5.8 Ghz) (2.4 Ghz)148440
8OverviewOL-12632-01Point-to-Multipoint BridgingThe access points can be used as a RAP to connect multiple remote MAPs with their associated wired networks (see Figure 4). By default this capability is turned-off for all access points. To support Ethernet bridging, you must enable bridging on the controller for each access point.Wireless client access can be provided over the bridging link; however, if bridging between tall buildings, the 2.4-Ghz wireless coverage area may be limited and possibly not suitable for direct wireless client access.Figure 4 Access Point Point to Multipoint Bridging ExampleMesh NetworkThe access points are typically deployed in a mesh network configuration. In a typical mesh deployment, one or more RAPs have a wired network connection through a switch to a controller. Other remote MAPs without wired network connections use the backhaul feature to optimally link to a RAP that is connected to the wired network. In the mesh network, the links between the access points are referred to as the backhaul links.Intelligent wireless routing is provided by the patent-pending Adaptive Wireless Path protocol (AWPP). This enables each MAP to identify its neighbors and intelligently choose the optimal path to the RAP with the wired network connection by calculating the cost of each path in terms of signal strength and the number of hops required to get to a controller.148439
Figure 5 illustrates a typical mesh configuration using MAPs and RAPs.Figure 5 Typical Mesh Configuration Using Access Points155631IP
10OverviewOL-12632-01Layer 2 and Layer 3 Network OperationThe access points support Layer 2 or Layer 3 network operation. In Layer 2 configurations, the access point and the controller are on the same subnet and communicate with encapsulated Ethernet frames using MAC addresses rather than IP addresses. Layer 2 configurations are typically not scalable into larger networks. Additionally, Layer 2 operation is supported only by the Cisco 4400 series controllers.Access points and controllers in Layer 3 configurations use IP addresses and UDP packets, which can be routed through large networks. Layer 3 operation is scalable and recommended by Cisco.Figure 6 illustrates a typical Layer-3 wireless network configuration containing access points and a controller.Figure 6 Typical Layer 3 Access Point Network Configuration Example158085LWAPPLWAPP
Figure 7 illustrates a typical Layer 2 network configuration. In a Layer 2 configuration, the controller and the access points are on the same subnet.Figure 7 Typical Layer 2 Access Point Network Configuration Example 158084LWAPPLWAPP
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CISCO CONFIDENTIAL - Draft 1B-1Cisco Aironet 1520 Series Outdoor Mesh Access Point Hardware Installation GuideOL-12632-01APPENDIXBDeclarations of Conformity and Regulatory InformationThis appendix provides declarations of conformity and regulatory information for the Cisco Aironet 1520 series lightweight outdoor mesh access point.This appendix contains the following sections:•Manufacturers Federal Communication Commission Declaration of Conformity Statement, page 2•Department of Communications—Canada, page 3•Declaration of Conformity for RF Exposure, page 3•Administrative Rules for Cisco Aironet Access Points in Taiwan, page 4
2OL-12632-01Manufacturers Federal Communication Commission Declaration of Conformity StatementModel:AIR-LAP1522AG-A-K9AIR-LAP1521G-A-K9FCC Certification number:Manufacturer:Cisco Systems, Inc.170 West Tasman DriveSan Jose, CA 95134-1706USAThis device complies with Part 15 rules. Operation is subject to the following two conditions:1. This device may not cause harmful interference, and2. This device must accept any interference received, including interference that may cause undesired operation.This equipment has been tested and found to comply with the limits of a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a residential environment. This equipment generates, uses, and radiates radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference. However, there is no guarantee that interference will not occur. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to correct the interference by one of the following measures:•Reorient or relocate the receiving antenna.•Increase separation between the equipment and receiver.•Connect the equipment to an outlet on a circuit different from which the receiver is connected.•Consult the dealer or an experienced radio/TV technician.Caution The Part 15 radio device operates on a non-interference basis with other devices operating at this frequency when using Cisco-supplied antennas. Any changes or modification to the product not expressly approved by Cisco could void the user’s authority to operate this device.Caution To meet regulatory restrictions, the access point must be professionally installed.Tested To ComplyWith FCC StandardsFOR HOME OR OFFICE USEAIR-RM1520G-A-K9: LDK102064AIR-RM1520A-A-K9: LDK102063
Note The use of the 4.9-GHz band requires a license and may be used only by qualified Public Safety operators as defined in section 90.20 of the FCC rules ( LAP1510 model only).VCCI Statement for JapanDepartment of Communications—CanadaIC Certification Number: Canadian Compliance StatementThis Class B Digital apparatus meets all the requirements of the Canadian Interference-Causing Equipment Regulations.Cet appareil numerique de la classe B respecte les exigences du Reglement sur le material broilleur du Canada.This device complies with Class B Limits of Industry Canada. Operation is subject to the following two conditions:1. This device may not cause harmful interference, and2. This device must accept any interference received, including interference that may cause undesired operation.Cisco’s access points are certified to the requirements of RSS-210 issue 5, RSP 100, and RSS 102 for spread spectrum devices.Declaration of Conformity for RF ExposureThis access point product has been found to be compliant to the requirements set forth in CFR 47Section 1.1307 addressing RF Exposure from radio frequency devices as defined in Evaluating Compliance with FCC Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields.T he antennas should be positioned more than 6.56 feet (2 meters) from your body or nearby persons.This access point is also compliant to EN 50835 for RF exposure.WarningThis is a Class B product based on the standard of the Voluntary Control Council for Interference from Information Technology Equipment (VCCI). If this is used near a radio or television receiver in a domestic environment, it may cause radio interference. Install and use the equipment according to the instruction manual.AIR-RM1520G-A-K9: 2461B-102064AIR-RM1520A-A-K9: 2461B-102063
4OL-12632-01Administrative Rules for Cisco Aironet Access Points in TaiwanThis section provides administrative rules for operating Cisco Aironet access points in Taiwan. The rules are provided in both Chinese and English.Chinese Translation
English TranslationAdministrative Rules for Low-power Radio-Frequency DevicesArticle 12For those low-power radio-frequency devices that have already received a type-approval, companies, business units or users should not change its frequencies, increase its power or change its original features and functions.Article 14The operation of the low-power radio-frequency devices is subject to the conditions that no harmful interference is caused to aviation safety and authorized radio station; and if interference is caused, the user must stop operating the device immediately and can't re-operate it until the harmful interference is clear.The authorized radio station means a radio-communication service operating in accordance with the Communication Act. The operation of the low-power radio-frequency devices is subject to the interference caused by the operation of an authorized radio station, by another intentional or unintentional radiator, by industrial, scientific and medical (ISM) equipment, or by an incidental radiator.
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CHAPTER CISCO CONFIDENTIAL - Draft 17-1Channels and Maximum Power Settings for Cisco Aironet Lightweight Access PointsOL-xxxxx-017Cisco Aironet 1520 Series Mesh Access Points This chapter lists the 1520 series mesh access point IEEE 802.11b/g (2.4-GHz) and IEEE 802.11a (5-GHz) channels and the maximum power levels supported by the world’s regulatory domains. For additional product hardware information refer to the Cisco Aironet 1520 Series Outdoor Mesh Access Point Hardware Installation Guide.The AIR-LAP1522 access point model supports both 802.11b/g and 802.11a radios, The AIR-LAP1521 access point model only supports a 802.11b/g radio.The following topics are covered in this chapter:•Channels and Maximum Power Levels, page 7-2•Special Country Restrictions, page 7-5•Special Country Restrictions, page 7-5
CISCO CONFIDENTIAL - Draft 17-2Channels and Maximum Power Settings for Cisco Aironet Lightweight Access PointsOL-xxxxx-01Chapter 7 Cisco Aironet 1520 Series Mesh Access Points Channels and Maximum Power LevelsChannels and Maximum Power Levels IEEE 802.11b/g (2.4-GHz Band)When shipped from the factory, theAIR-LAP1522G access points support the channels and maximum power levels listed in Table 7-1 for their regulatory domain.Note In Table 7-1, the operating data rates (in Mbps) are shown in the CCK and OFDM table cells. For example: CCK 1-11 indicates CCK data rates of 1 to 11 Mbps and All indicates all CCK and OFDM data rates.Table 7-1 Channels and Maximum Conducted Power for the 802.11b/g Radio with Up to5.5-dBi AntennasChannel IDCenter Freq(MHz)Maximum Conducted Power Levels (dBm) in the Regulatory Domains–ACCK1-11OFDM6-48OFDM5412412282525224172826263242228272642427282726524322827266243728272672442282726824472827269245228272610 2457 28 26 2611 2462 28 25 2512 2467 – – –13 2472 – – –14 2484 – – –
CISCO CONFIDENTIAL - Draft 17-3Channels and Maximum Power Settings for Cisco Aironet Lightweight Access PointsOL-xxxxx-01Chapter 7 Cisco Aironet 1520 Series Mesh Access Points Channels and Maximum Power LevelsTable 7-2 Channels and Maximum Conducted Power for the 802.11b/g Radio with Up to8.0-dBi AntennasChannel IDCenter Freq(MHz)Maximum Conducted Power Levels (dBm) in the Regulatory Domains–ACCK1-11OFDM6-48OFDM5412412282424224172825253242228262642427282726524322827266243728272672442282726824472827269245228262610 2457 28 25 2511 2462 28 24 2412 2467 – – –13 2472 – – –14 2484 – – –
CISCO CONFIDENTIAL - Draft 17-4Channels and Maximum Power Settings for Cisco Aironet Lightweight Access PointsOL-xxxxx-01Chapter 7 Cisco Aironet 1520 Series Mesh Access Points Channels and Maximum Power LevelsIEEE 802.11a (5-GHz Band)When shipped from the factory, the AIR-LAP1522AG access points support the channels and maximum power levels listed in Table 7-4 for their regulatory domain.Note In Table 7-4, the operating data rates (in Mbps) are shown in the OFDM table cells. For example: OFDM 6-36 indicates 6 to 36 Mbps data rates.Table 7-3 Channels and Maximum Conducted Power for IEEE 802.11a Radio with Up to 17 dBi AntennasChannelIDCenter Frequency(MHz)Bandwidth(MHz)Maximum Conducted Power Levels (dBm) in the Regulatory Domains–A –N –TOFDM6-36 OFDM48 OFDM54 OFDM6-36 OFDM48 OFDM54 OFDM6-36 OFDM48 OFDM54 (4900 to 5100 MHz)20 4950 20 20 20 20 ––––––21 4955 20 20 20 20 ––––––22 4960 20 20 20 20 ––––––23 4965 20 20 20 20 ––––––24 4970 20 20 20 20 ––––––25 5975 20 20 20 20 ––––––26 4980 20 20 20 20 ––––––5725 to 5850 MHz149 5745 20 28 27 26 28 27 26 28 27 26153 5765 20 28 27 26 28 27 26 28 27 26157 5785 20 28 27 26 28 27 26 28 27 26161 5805 20 28 27 26 28 27 26 28 27 26165 5825 20 28 27 26 28 27 26 28 27 26
CISCO CONFIDENTIAL - Draft 17-5Channels and Maximum Power Settings for Cisco Aironet Lightweight Access PointsOL-xxxxx-01Chapter 7 Cisco Aironet 1520 Series Mesh Access Points Channels and Maximum Power LevelsSpecial Country RestrictionsTable 7-4 lists special restrictions for wireless operation in some countries. Table 7-4 Special Country Restrictions for Wireless OperationCountryFrequency Band (GHz)Regulatory Domain Special Limitation and RestrictionsAustralia 5 –N 5 GHz maximum antenna gain limited to 7 dBi.Mexico 2.4 –N End user must limit 2.4 GHz operation to 2450 to 2483.5 MHz and 36 dBm EIRP1.1. EIRP (dBm) = maximum output power (dBm) + antenna gain (dBi)New Zealand 5 –N 5 GHz maximum antenna gain limited to 7 dBi.United States 4.9 –A The use of the 4.9-GHz band requires a license and may be used only by qualified Public Safety operators as defined in section 90.20 of the FCC rules.
CISCO CONFIDENTIAL - Draft 17-6Channels and Maximum Power Settings for Cisco Aironet Lightweight Access PointsOL-xxxxx-01Chapter 7 Cisco Aironet 1520 Series Mesh Access Points Changing the Lightweight Access Point Output PowerChanging the Lightweight Access Point Output PowerThis section provides instructions for changing the 1500 series access point output power to comply with the maximum power limits imposed by special regulatory and country restrictions (see the “Special Country Restrictions” section on page 7-5). Follow these instructions to change the output power settings using a controller and your browser:Note Administrator privileges may be required in order to change access point settings.Caution To meet regulatory restrictions, the access point and the external antenna must be professionally installed. The network administration or other IT professional responsible for installing and configuring the unit is a suitable professional installer. Following installation, access to the unit should be password-protected by the network administrator to maintain regulatory compliance.The output power on the 1500 series access points can be changed only by using a Cisco wireless LAN controller (2600 series or 4400 series), the controllers on a Cisco Wireless Services Module (WiSM), or using Cisco Wireless Control System (WCS). Note See the Cisco Wireless LAN Controller Configuration Guide for more details on how to to configure your access point using the web-browser interface.Follow these steps to change the 1500 series access point’s output power to meet local regulations using a controller: Step 1 Open your Internet browser. You must use Microsoft Internet Explorer 6.0.2800 or a later release.Step 2 Enter https://IP address (where IP address is the controller’s IP address) in the browser address line and press Enter. A user login screen appears.Step 3 Enter the username and password and press Enter. The controller’s summary page appears.Note The username and password are case-sensitive.Step 4 Click Wireless > 802.11a Radios or 802.11b/g Radios and a list of associated access points appears.Step 5 Choose the desired access point from the displayed list and click Configure. The the radio settings page appears.Step 6 Scroll down to the Tx Power Level Assignment field, and click Custom.Custom indicates that the radio output power is manually controlled by the Tx Power Configuration setting field.
CISCO CONFIDENTIAL - Draft 17-7Channels and Maximum Power Settings for Cisco Aironet Lightweight Access PointsOL-xxxxx-01Chapter 7 Cisco Aironet 1520 Series Mesh Access Points Changing the Lightweight Access Point Output PowerStep 7 In the Tx Power Level field, select the appropriate power level setting (1 to 5). Based on the operating channel, the regulatory domain, and the controller power level setting (1 to 5), the actual transmit power at the access point can be reduced to comply with special regulatory or country restrictions. Note The access point supports only two output power levels for the 2.4-GHz radio and three output power levels for the 5-GHz radio.Note Table 7-1 and Table 7-3 list the access point maximum output power levels supported for each regulatory domain when the access point is shipped from the factory.Table 7-5 lists the controller power settings and the corresponding output power levels for these two examples:•2.4-GHz (802.11b/g) operation:–American regulatory domain–Channel 3 using 11-Mbps data rates•5-GHz (802.11a) operation:–American regulatory domain–Channel 149 using 36-Mbps data ratesStep 8 Click Apply.Step 9 Close your Internet browser.For additional configuration information, refer to the Cisco Wireless LAN Controller Configuration Guide. Table 7-5 Example of Output Power LevelsController Tx Power Settings11. The Tx Power Level setting of 1 represents the maximum conducted power setting for the access point. Each subsequent controller power level (such as 2, 3, 4, etc.) represents an approximate 3-dBm reduction in transmit power from the previous power level.Radio Output Power802.11b/g (dBm) 802.11a (dBm)1 (maximum) 2422. The maximum output power level obtained from Table 7-1.2433. The maximum output power level obtained from Table 7-3.22121
CISCO CONFIDENTIAL - Draft 17-8Channels and Maximum Power Settings for Cisco Aironet Lightweight Access PointsOL-xxxxx-01Chapter 7 Cisco Aironet 1520 Series Mesh Access Points Changing the Lightweight Access Point Output Power

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