Cisco Multiband Diversity Omnidirectional Ceiling-Mount Antenna... Manuale utente

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

Cisco Multiband Diversity Omnidirectional

Ceiling-Mount Antenna (AIR-ANTM4050V-R)

This document outlines the specifications and describes the AIR-ANTM4050V-R multiband diversity

omnidirectional ceiling-mount 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 8

•Safety Instructions, page 9

•Installation Instructions, page 10

•Obtaining Documentation, page 12

•Documentation Feedback, page 13

•Cisco Product Security Overview, page 14

•Obtaining Technical Assistance, page 14

•Obtaining Additional Publications and Information, page 16

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.

Cisco Multiband Diversity Omnidirectional Ceiling-Mount Antenna (AIR-ANTM4050V-R)

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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 Diversity Omnidirectional Ceiling-Mount Antenna (AIR-ANTM4050V-R)

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Overview

The AIR-ANTM4050V-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-ANTM4050V-R antenna is compatible with Cisco

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

Figure 1 and Figure 2 show the front and rear panels of the AIR-ANTM4050V-R antenna.

Figure 1 Cisco AIR-ANTM4050V-R Antenna (Front Panel)

Figure 2 Cisco AIR-ANTM4050V-R Antenna Back Panel

Technical Specifications

The following table lists the technical specifications for the AIR-ANTM4050V-R antenna.

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127404

Antenna type Omnidirectional patch

Operating frequency range 2400 to 2500 MHz and 4900 to 5990 MHz

Maximum VSWR1bandwidth 2.0:1

Peak gain

•2.4-GHz: 4 dBi

•5-GHz: 5 dBi

Polarization Linear (vertical) (2x)

Cisco Multiband Diversity Omnidirectional Ceiling-Mount Antenna (AIR-ANTM4050V-R)

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Technical Specifications

Figure 3 shows the H-plane radiation pattern at 2.4- to 2.5-GHz for the AIR-ANTM4050V-R antenna.

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

Azimuth plane beamwidth Omnidirectional

Elevation plane 3 dB beamwidth (H-plane) Omnidirectional

Elevation plane 3 dB beamwidth (E-plane) 60 degrees

Coaxial cable 3 ft (0.9 m) plenum rated

Dimensions 6.2 x 3.6 x 0.9 in. (158 x 91 x 23 mm)

Weight 0.5 lb (0.23 kg)

Connector type RP-TNC (2x)

Enclosure Acrylic/PVC

Environment Indoor only

Mounting Ceiling grid, suspended tile

1. VSWR = voltage standing wave ratio

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Cisco Multiband Diversity Omnidirectional Ceiling-Mount Antenna (AIR-ANTM4050V-R)

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Technical Specifications

Figure 4 shows the E-plane radiation pattern at 2.4- to 2.5-GHz for the AIR-ANTM4050V-R antenna.

Figure 4 E-Plane Pattern at 2.4- to 2.5-GHz

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Cisco Multiband Diversity Omnidirectional Ceiling-Mount Antenna (AIR-ANTM4050V-R)

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Technical Specifications

Figure 5 shows the H-plane radiation pattern at 4.9- to 5.99-GHz for the AIR-ANTM4050V-R antenna.

Figure 5 H-Plane Pattern at 4.9- to 5.99-GHz

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Cisco Multiband Diversity Omnidirectional Ceiling-Mount Antenna (AIR-ANTM4050V-R)

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System Requirements

Figure 6 shows the E-plane radiation pattern at 4.9- to 5.99-GHz for the AIR-ANTM4050V-R antenna.

Figure 6 E-Plane Pattern at 4.9- to 5.99-GHz

System Requirements

The AIR-ANTM4050V-R antenna requires a Cisco 802.11a/b/g radio product that uses a RP-TNC

connector.

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Cisco Multiband Diversity Omnidirectional Ceiling-Mount Antenna (AIR-ANTM4050V-R)

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Installation Notes

This antenna is designed to be mounted indoors on a suspended ceiling track having either flush or

recessed mounted ceiling tiles.

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.

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:

•Mount the antenna to use its propagation characteristics. For best results, mount the antenna

horizontally at ceiling level near the center of the coverage area.

Note The antenna must be mounted horizontally in order to maximize its omnidirectional

propagation characteristics. Mounting it vertically may noticeably decrease the antenna

range and overall 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.

Cisco Multiband Diversity Omnidirectional Ceiling-Mount Antenna (AIR-ANTM4050V-R)

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Safety Instructions

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.

•To extend the coaxial cable included with your antenna, we recomend a low-loss or ultra-low-loss

coaxial cable for installation flexibility without a significant loss in range. The following table lists

transmission loss information about low-loss and ultra-low-loss extension coaxial cables available

from Cisco.

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.

Cisco Product Number Cable Length Transmission Loss

AIR-CAB020LL-R 20 ft (6 m) •2.4-GHz: 1.3 dBi

•5-GHz: 2.5 dBi

AIR-CAB050LL-R 50 ft (15 m) •2.4-GHz: 3.3 dBi

•5-GHz: 5.75 dBi

AIR-CAB100ULL-R 100 ft (30 m) •2.4-GHz: 4.4 dBi

•5-GHz: 7.25 dBi

AIR-CAB150ULL-R 150 ft (46 m) •2.4-GHz: 6.6 dBi

•5-GHz: 11 dBi

Cisco Multiband Diversity Omnidirectional Ceiling-Mount Antenna (AIR-ANTM4050V-R)

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Installation Instructions

The following sections contain procedures for installing the antenna on a suspended ceiling.

Mounting on Suspended Ceilings with Flush Mounted Tiles

The antenna is configured to mount to a suspended ceiling track with flush mounted tiles. Suspended

ceiling mounting clips are provided on the rear panel of the antenna. (See Figure 7.)

Figure 7 Suspended Ceiling with Flush Mounted Tiles

After you have selected a suitable location, follow these steps to mount the antenna:

Step 1 Make two small slots in the ceiling tile for the cables to pass through.

Step 2 Line up the antenna mounting clips with the ceiling track.

Step 3 Grasp the antenna with one hand and the track with the other while gently pushing the antenna until the

clips are securely attached to the track.

Step 4 Route the antenna cables into the space above the ceiling grid and connect them to the device or extender

cables.

Step 5 Replace the ceiling tiles.

Note You may have to trim some material from one of the tiles to accommodate the antenna cables.

1Ceiling track 2Suspended ceiling mounting clips

Side view

Top view

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