Cisco Aironet AIR-ANT5160V-R Manuel utilisateur

Americas Headquarters:

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

Cisco Aironet 6-dBi Omnidirectional Antenna

(AIR-ANT5160V-R)

This document outlines the specifications, describes the AIR-ANT5160V-R 6-dBi omnidirectional

antenna, and provides instructions for mounting it. The antenna is a ruggedized high-performance

colinear antenna that operates in the 5-GHz frequency range and is designed for use in large rooms or

vaulted areas where extended coverage is needed. The antenna is designed to be used indoors or outdoors

and can be mounted on a mast, I-beam, or suspended ceiling cross member.

The following information is provided in this document.

•Technical Specifications, page 2

•System Requirements, page 3

•Safety Precautions, page 3

•Installation Guidelines, page 4

•Installing the Antenna, page 5

•Obtaining Documentation and Submitting a Service Request, page 9

Cisco Aironet 6-dBi Omnidirectional Antenna (AIR-ANT5160V-R)

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Technical Specifications

Antenna type Omnidirectional

colinear array

Operating frequency range 5150–5875 MHz

Nominal input impedence 50Ω

2:1 VSWR bandwith 5150–5850 MHz

Peak gain 6 dBi

Polarization Linear

E-plane 3-dB beamwidth 17°

H-plane 3-dB beamwidth Omnidirectional

Cable length and type 36 in. (91.4 cm)

Plenum rated

Connector type RP-TNC Male

Length 11.5 in. (29.2 cm)

Diameter 1 in. (2.5 cm)

Weight 12 oz. (0.34 kg)

Operating temperature range –22°F – 158°F

(–30°C – 70°C)

Storage temperature range –40°F – 185°F

(–40°C – 85°C)

Wind rating 125 mph (200 kph)

E-Plane Radiation Pattern H-Plane Radiation Pattern

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System Requirements

This antenna is designed for use with Cisco Aironet access points and bridges but can be used with any

5-GHz Cisco Aironet radio device that utilizes a reverse polarity (RP-TNC) connector.

Safety Precautions

Warning

Installation of this antenna near power lines is dangerous. For your safety, follow the installation

directions.

Warning

This warning symbol means danger. You are in a situation that could cause bodily injury. Before you

work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar

with standard practices for preventing accidents.

Warning

In order to comply with international radio frequency (RF) exposure limits, dish antennas should be

located at a minimum of 8.7 inches (22 cm) or more from the bodies of all persons. Other antennas

should be located a minimum of 7.9 inches (20 cm) or more from the bodies of all persons.

Warning

Do not work on the system or connect or disconnect cables during periods of lightning activity.

Warning

This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the

absence of a suitably installed ground conductor. Contact the appropriate electrical inspection

authority or an electrician if you are uncertain that suitable grounding is available.

Warning

Do not locate the antenna near overhead power lines or other electric light or power circuits, or

where it can come into contact with such circuits. When installing the antenna, take extreme care

not to come into contact with such circuits, as they may cause serious injury or death. For proper

installation and grounding of the antenna, please refer to national and local codes (e.g. U.S.:NFPA 70,

National Electrical Code, Article 810, in Canada: Canadian Electrical Code, Section 54).

Each year hundreds of people are killed or injured when attempting to install an antenna. In many of

these cases, the victim was aware of the danger of electrocution, but did not take adequate steps to avoid

the hazard.

For your safety, and to help you achieve a good installation, please read and follow these safety

precautions. They may save your life!

1. If you are installing an antenna for the first time, for your own safety as well as others, seek

professional assistance. Your Cisco sales representative can explain which mounting method to use

for the size and type antenna you are about to install.

2. Select your installation site with safety, as well as performance in mind. Remember: electric power

lines and phone lines look alike. For your safety, assume that any overhead line can kill you.

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Installation Guidelines

3. Call your electric power company. Tell them your plans and ask them to come look at your proposed

installation. This is a small inconvenience considering your life is at stake.

4. Plan your installation carefully and completely before you begin. Successful raising of a mast or

tower is largely a matter of coordination. Each person should be assigned to a specific task, and

should know what to do and when to do it. One person should be in charge of the operation to issue

instructions and watch for signs of trouble.

5. When installing your antenna, remember:

a. Do not use a metal ladder.

b. Do not work on a wet or windy day.

c. Do dress properly—shoes with rubber soles and heels, rubber gloves, long sleeved shirt or

jacket.

6. If the assembly starts to drop, get away from it and let it fall. Remember, the antenna, mast, cable,

and metal guy wires are all excellent conductors of electrical current. Even the slightest touch of any

of these parts to a power line complete an electrical path through the antenna and the installer: you!

7. If any part of the antenna system should come in contact with a power line, don’t touch it or try to

remove it yourself. Call your local power company. They will remove it safely.

8. If an accident should occur with the power lines call for qualified emergency help immediately.

Installation Guidelines

Because the antenna transmits and receives radio signals, they are susceptible to RF obstructions and

common sources of interference that can reduce throughput and range of the device to which they are

connected. Follow these guidelines to ensure the best possible performance:

Caution For outside installations, make sure you do not mount the antenna upside down or block the bottom of

the antenna at the cable exit. The correct mounting position is with the cable pointing down (towards the

ground) so that any moisture will drain through the antenna drain holes. The antenna ships with a yellow

mounting instruction label temporarily attached to the antenna radome.

•Mount the antenna to utilize its propagation characteristics. One way to do this is to orient the

antenna vertically and mount it as high as possible.

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

ceiling trusses, building superstructures, and major power cabling runs. If necessary, use a rigid

conduit to lower the antenna away from these obstructions.

•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 affect on signal penetration.

–

Solid and pre-cast 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 reflects signals, causing poor penetration.

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Installing the Antenna

Site Selection

Before attempting to install your antenna, determine where you can best place the antenna for safety and

performance.

Follow these steps to determine a safe distance from wires, power lines, and trees.

Step 1 Measure the height of your antenna.

Step 2 Add this length to the length of your tower or mast and then double this total for the minimum

recommended safe distance.

Caution If you are unable to maintain this safe distance, stop and get professional help.

Generally, the higher an antenna is above the ground, the better it performs. Good practice is to install

your antenna about 5 to 10 ft (1.5 to 3 m) above the roof line and away from all power lines and

obstructions. If possible, find a mounting place directly above your wireless device so that the lead-in

cable can be as short as possible.

Installing the Antenna

A mounting hardware kit is provided that allows you to install the antenna on a suspended ceiling, open

beam ceiling, or a pole.

The ceiling mount kit consists of the following hardware:

•One T-rail grid bracket

•One bracket plate

•Two internal tooth lock washers

•Two #6-32 x 1/4-in. SS Phillips machine screws

•One I-beam clamp

•One 1/4-in. flat washer

•One 1/4-in. split lock washer

•One 1/4 x 20 x 1/2-in. hex head bolt

The pole (mast) mount kit consists of the following hardware:

•Six 5/16-in. x 18 SS hex nuts

•Four 5/16-in. SS lock washers

•One U-bolt

•One V-bracket

•Two base brackets

•Two 5/16-in. flat washers

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Installing the Antenna

You will need the following tools and equipment, which are not provided:

•Phillips head screwdriver

•7/16-in. open end or box end wrench (or adjustable wrench)

•1/2-in. open end or box end wrench (or adjustable wrench)

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

mast. Your installation may vary. Before you begin, you may want to refer to Figure 1.

Figure 1 shows how the antenna should be mounted to a suspended ceiling or pole (mast).

Figure 1 Antenna Mounting Details

T-Rail Grid Bracket Installation

You can mount the antenna to a T-rail grid with the cable pointing up or down.

Follow these steps to install the antenna on a suspended ceiling using the T-rail grid bracket:

Step 1 Remove the yellow mounting instruction label. If you are mounting the antenna indoors, you can ignore

the label instructions.

Step 2 Attach the bracket plate to the antenna base using two #6 Phillips head screws and #6 lock washers as

shown in Figure 1.

Step 3 Remove the hex nut and flat washer from the T-rail grid bracket. Discard the flat washer.

Step 4 Install the T-rail grid bracket onto the bracket plate using the hex nut and a 1/4-in. internal tooth lock

washer. Do not tighten the hex nut.

Step 5 Clamp the T-rail grid bracket onto the ceiling runner and tighten the hex nut with a 7/16-in. wrench or

adjustable wrench.

1Bracket plate 4V-bracket

2Ceiling T-rail grid bracket 5Base bracket

3I-beam clamp 6U-bolt

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Installing the Antenna

Step 6 Route the antenna cable to the wireless device.

I-Beam Clamp Installation

Follow these steps to install the antenna on an open beam ceiling using the I-beam clamp:

Step 1 Remove the yellow mounting instruction label. If you are mounting the antenna indoors, you can ignore

the label instructions.

Step 2 Attach the bracket plate to the antenna base using two #6 Phillips head screws and #6 lock washers.

Step 3 Install the I-beam clamp to the bracket plate using a 1/4-20 x 1/2-in. hex head bolt, a flat washer and

split lock washer as shown in Figure 1.

Step 4 Position the I-beam clamp on the ceiling beam and tighten the clamp bolt.

Step 5 Route the antenna cable to the wireless device.

Pole Installation

Follow these steps to install the antenna on a pole:

Step 1 Attach the U-bolt and V-bracket to the top of the pole using two 5/16 x 18 hex nuts, 5/16-in. flat washers,

and 5/16-in. lock washers as shown in Figure 1. Tighten the assembly using a 1/2-in. wrench or

adjustable wrench.

Step 2 Start two more 5/16 x 18 hex nuts on the U-bolt and turn them down against the nuts securing the the

U-bolt to the pole.

Step 3 Position the base brackets on the antenna base as shown in Figure 1.

Note For outside installations, make sure you do not mount the antenna upside down or block the

bottom of the antenna at the cable exit. The correct mounting position is with the cable pointing

down (towards the ground or floor) so that any moisture will drain through the antenna drain

holes. Mounting the antenna any other way may cause it to fill with water and fail. See Figure 2.

Cisco Aironet 6-dBi Omnidirectional Antenna (AIR-ANT5160V-R)

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Installing the Antenna

Figure 2 Antenna Drain Holes

Step 4 Slide the antenna and base brackets onto the U-bolt threads.

Step 5 Secure the antenna to the U-bolt using two 5/16 x 18 hex nuts and two 5/16-in. lock washers.

Step 6 Tighten the hex head bolts evenly using a 1/2-in. wrench or adjustable wrench.

Step 7 Remove the yellow mounting instruction label.

Step 8 Route the antenna cable to the wireless device.

Suggested Cable

Cisco recommends a high-quality, low-loss cable for use with the antenna.

Note Coaxial cable loses efficiency as the frequency increases, resulting in signal loss. The cable

should be kept as short as possible because cable length also determines the amount of

signal loss (the longer the run, the greater the loss).

The antenna terminates with a RP-TNC plug after a short, 3-ft (0.91-m) cable. The mating connector to

the antenna is an appropriate RP-TNC jack. The connector on the opposite end will vary according to

the type of equipment used.

After the cable is attached to the antenna, make sure that the connections are sealed (if outdoors) to

prevent moisture and other weathering elements from affecting performance. Cisco recommends using

a coax seal (such as CoaxSeal) for outdoor connections. Silicon sealant or electrical tape are not

recommended for sealing outdoor connections.

Grounding the Antenna

The antenna should be grounded if you are mounting it outdoors. Follow these steps to ground the

antenna in accordance with national electrical code instructions.

271163

1Mounting holes 2Drain holes

Cisco Aironet 6-dBi Omnidirectional Antenna (AIR-ANT5160V-R)

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Step 1 Use No. 10 AWG copper or No. 8 or larger copper-clad steel or bronze wire as ground wires for both

mast and lead-in. Securely clamp the wire to the bottom of the mast.

Step 2 Secure the lead-in wire to a static discharge unit (lightning arrestor) and the mast ground wire to the

building with stand-off insulators spaced from 4 ft (1.2 m) to 8 ft (2.4 m) apart.

Step 3 Mount the antenna discharge unit as close as possible to where the lead-in wire enters the building.

Step 4 Drill a hole in the building’s wall as close as possible to the equipment to which you will connect the

lead-in cable.

Caution There may be wires in the wall. Make sure your drilling location is clear of any obstructions or other

hazards.

Step 5 Pull the cable through the hole and form a drip loop close to where it enters the building.

Step 6 Thoroughly waterproof the lead-in area.

Step 7 Connect the lead-in cable to the equipment.

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional

information, see the monthly What’s New in Cisco Product Documentation, which also lists all new and

revised Cisco technical documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

Subscribe to the What’s New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed

and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free

service and Cisco currently supports RSS Version 2.0.

Cisco and the Cisco Logo are trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and other countries. A listing of Cisco's trademarks

can be found at www.cisco.com/go/trademarks. Third party trademarks mentioned are the property of their respective owners. The use of the word

partner does not imply a partnership relationship between Cisco and any other company. (1005R)

Cisco Aironet 6-dBi Omnidirectional Antenna (AIR-ANT5160V-R)

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