Cisco Multiband Swivel-Mount Dipole Antenna... Manual de usuario

Corporate Headquarters:

Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA

Cisco Multiband Swivel-Mount Dipole Antenna

(AIR-ANTM2050D-R)

This document outlines the specifications and describes the AIR-ANTM2050D-R multiband

swivel-mount dipole antenna and contains the following sections:

•Cisco 90-Day Limited Hardware Warranty Terms, page 1

•Overview, page 3

•Technical Specifications, page 3

•System Requirements, page 7

•Installation Notes, page 7

•Safety Instructions, page 9

•Obtaining Documentation, page 9

•Documentation Feedback, page 11

•Cisco Product Security Overview, page 11

•Obtaining Technical Assistance, page 12

•Obtaining Additional Publications and Information, page 14

Cisco 90-Day Limited Hardware Warranty Terms

There are special terms applicable to your hardware warranty and various services that you can use

during the warranty period. Your formal Warranty Statement, including the warranties and license

agreements applicable to Cisco software, is available on Cisco.com. Follow these steps to access and

download the Cisco Information Packet and your warranty and license agreements from Cisco.com.

1. Launch your browser, and go to this URL:

http://www.cisco.com/univercd/cc/td/doc/es_inpck/cetrans.htm

The Warranties and License Agreements page appears.

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Cisco 90-Day Limited Hardware Warranty Terms

2. To read the Cisco Information Packet, follow these steps:

a. Click the Information Packet Number field, and make sure that the part number

78-5235-03A0 is highlighted.

b. Select the language in which you would like to read the document.

c. Click Go.

The Cisco Limited Warranty and Software License page from the Information Packet appears.

d. Read the document online, or click the PDF icon to download and print the document in Adobe

Portable Document Format (PDF).

Note You must have Adobe Acrobat Reader to view and print PDF files. You can download

the reader from Adobe’s website: http://www.adobe.com

3. To read translated and localized warranty information about your product, follow these steps:

a. Enter this part number in the Warranty Document Number field:

78-5236-01C0

b. Select the language in which you would like to read the document.

c. Click Go.

The Cisco warranty page appears.

d. Review the document online, or click the PDF icon to download and print the document in

Adobe Portable Document Format (PDF).

You can also contact the Cisco service and support website for assistance:

http://www.cisco.com/public/Support_root.shtml.

Duration of Hardware Warranty

Ninety (90) days.

Replacement, Repair, or Refund Policy for Hardware

Cisco or its service center will use commercially reasonable efforts to ship a replacement part within ten

(10) working days after receipt of a Return Materials Authorization (RMA) request. Actual delivery

times can vary, depending on the customer location.

Cisco reserves the right to refund the purchase price as its exclusive warranty remedy.

To Receive a Return Materials Authorization (RMA) Number

Contact the company from whom you purchased the product. If you purchased the product directly from

Cisco, contact your Cisco Sales and Service Representative.

Complete the information below, and keep it for reference:

Company product purchased from

Company telephone number

Product model number

Product serial number

Maintenance contract number

Cisco Multiband Swivel-Mount Dipole Antenna (AIR-ANTM2050D-R)

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Overview

The AIR-ANTM2050D-R antenna operates in the 2.4- and 5-GHz bands, and is designed for use with

spatial-diversity access point (AP) systems. The AIR-ANTM2050D-R antenna is compatible with Cisco

802.11a/b/g radio products using a reverse-polarity threaded Neill-Concelman (RP-TNC) connector.

Figure 1 shows the AIR-ANTM2050D-R antenna.

Figure 1 Cisco AIR-ANTM2050D-R Antenna

Technical Specifications

The following table lists the technical specifications for the AIR-ANTM2050D-R antenna.

135068

Antenna type Dipole

Operating frequency range 2400 to 2500 MHz and 4900 to 5900 MHz

Maximum VSWR1bandwidth 2.0:1

Peak gain

•2.4-GHz: 2 dBi

•5-GHz: 5 dBi

Polarization Linear (vertical)

Azimuth plane beamwidth Omnidirectional

Elevation plane 3 dB beamwidth (H-plane) Omnidirectional

Elevation plane 3 dB beamwidth (E-plane)

•2.4-GHz: 85 degrees

•5-GHz: 30 degrees

Maximum dimensions 6.9 x 0.9 x 0.3 in. (175 x 22 x 8 mm)

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Technical Specifications

Figure 2 shows the H-plane radiation pattern at 2.4- to 2.5-GHz for the AIR-ANTM2050D-R antenna.

Figure 2 H-Plane Pattern at 2.4- to 2.5-GHz

Weight 0.1 lb (0.05 kg)

Connector type RP-TNC

Enclosure Plastic radome UV stabilized ABS/PC

Environment Indoor

Mounting Direct

1. VSWR = voltage standing wave ratio

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Technical Specifications

Figure 3 shows the E-plane radiation pattern at 2.4- to 2.5-GHz for the AIR-ANTM2050D-R antenna.

Figure 3 E-Plane Pattern at 2.4- to 2.5-GHz

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Technical Specifications

Figure 4 shows the H-plane radiation pattern at 4.9- to 5.9-GHz for the AIR-ANTM2050D-R antenna.

Figure 4 H-Plane Pattern at 4.9- to 5.9-GHz

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System Requirements

Figure 5 shows the E-plane radiation pattern at 4.9- to 5.9-GHz for the AIR-ANTM2050D-R antenna.

Figure 5 E-Plane Pattern at 4.9- to 5.9-GHz

System Requirements

The AIR-ANTM2050D-R antenna requires a Cisco 802.11a/b/g radio product that uses a RP-TNC

connector.

Installation Notes

This antenna is designed to be mounted directly to the access point. For information about orienting the

dipole antenna, see the hardware installation guide for your access point.

In addition to antenna orientation, wireless access point installation location with respect to all wireless

clients plays a significant role in determining overall network performance. Clients at the furthest

coverage points might have 10% to 50% of the bandwidth of clients close to it. Wireless network

coverage in one area or location might need to be lowered to improve the performance of other clients.

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Installation Notes

Because antennas transmit and receive radio signals, their performance can be adversely affected by the

surrounding environment including distance between access point and client, physical obstructions, or

radio frequency (RF) interference.

Follow these guidelines to ensure the best possible performance:

•Wherever possible, mount the AP HWIC and antenna where the wireless devices would be within

sight and avoid physical obstructions. Barriers along the line of sight between client and access point

will degrade the wireless radio signals. AP HWICs and antennas can be installed above floor level

in office environments or near the ceiling for better performance since most obstructions tend to be

near floor level.

•The density of the materials used in a building's construction determines the number of walls the

signal must pass through and still maintain adequate coverage. Consider the following before

choosing the location to install your antenna:

–

Paper and vinyl walls have very little effect on signal penetration.

–

Solid and precast concrete walls limit signal penetration to one or two walls without degrading

coverage.

–

Concrete and wood block walls limit signal penetration to three or four walls.

–

A signal can penetrate five or six walls constructed of drywall or wood.

–

A thick metal wall or wire-mesh stucco walls causes signals to reflect back and cause poor

penetration.

•Avoid mounting the antenna next to a column or vertical support that could create a shadow zone

and reduce the coverage area.

•Keep the antenna away from reflective metal objects such as heating and air-conditioning ducts,

large ceiling trusses, building superstructures, and major power cabling runs. If necessary, use an

extension cable to relocate the antenna away from these obstructions.

Caution Install the AP HWIC and any antennas away from appliances that share the same frequency bands.

Microwave ovens, cordless telephones, and security monitors can temporarily interfere with wireless

performance.

Caution We recommend you avoid installing wireless antennas in or near rack-mounted installations that include

networking equipment and computer servers whose radiated noise emissions can severely degrade radio

performance.

Note If the desired installation site has a marginally acceptable level of radiated noise emissions, consider

using a remote-mounted antenna, such as a wall-mount or ceiling-mount antenna, for better radio

performance and coverage.

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Safety Instructions

Follow these safety instructions when installing your antenna.

Warning

In order to comply with FCC radio frequency (RF) exposure limits, antennas should be located at a

minimum of 7.9 inches (20 cm) or more from the body of all persons.

Statement 332

•Plan your installation procedure carefully and completely before you begin.

•If you are installing an antenna for the first time, for your own safety as well as that of others, seek

professional assistance. Consult your dealer, who can explain which mounting method to use for the

location where you intend to install the antenna.

•Choose your installation site with safety as well as performance in mind. Remember that electric

power cables and telephone lines look alike. For your safety, assume that any line is an electric

power line until determined otherwise.

•Call your local power company or building maintenance organization if you are unsure about cables

close to your mounting location.

•When installing your antenna, do not use a metal ladder. Do dress properly: shoes with rubber soles

and heels, rubber gloves, and a long-sleeved shirt or jacket.

•If an accident or emergency occurs with the power lines, call for qualified emergency help

immediately.

Obtaining Documentation

Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several

ways to obtain technical assistance and other technical resources. These sections explain how to obtain

technical information from Cisco Systems.

Cisco.com

You can access the most current Cisco documentation at this URL:

http://www.cisco.com/univercd/home/home.htm

You can access the Cisco website at this URL:

http://www.cisco.com

You can access international Cisco websites at this URL:

http://www.cisco.com/public/countries_languages.shtml

Cisco Multiband Swivel-Mount Dipole Antenna (AIR-ANTM2050D-R)

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Obtaining Documentation

Documentation DVD

Cisco documentation and additional literature are available in a Documentation DVD package, which

may have shipped with your product. The Documentation DVD is updated regularly and may be more

current than printed documentation. The Documentation DVD package is available as a single unit.

Registered Cisco.com users (Cisco direct customers) can order a Cisco Documentation DVD (product

number DOC-DOCDVD=) from the Ordering tool or Cisco Marketplace.

Cisco Ordering tool:

http://www.cisco.com/en/US/partner/ordering/

Cisco Marketplace:

http://www.cisco.com/go/marketplace/

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