Cisco AIR-ANT5170P-R - Aironet Diversity Patch Bedienungsanleitung

Corporate Headquarters:

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

Cisco Aironet 7-dBi Diversity Patch Antenna

(AIR-ANT5170P-R)

This document outlines the specifications, describes the AIR-ANT5170P-R 7-dBi diversity patch

antenna, and provides instructions for mounting it. The antenna operates in the 5-GHz frequency range

and is designed for use in both indoor and outdoor environments.

The following information is provided in this document.

•Technical Specifications, page 2

•System Requirements, page 3

•Installation Guidelines, page 4

•Installing the Antenna, page 5

•Obtaining Documentation and Submitting a Service Request, page 7

Cisco Aironet 7-dBi Diversity Patch Antenna (AIR-ANT5170P-R)

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Technical Specifications

Antenna type Diversity patch

Operating frequency range 5150–5850 MHz

Nominal input impedance 50Ω

2:1 VSWR bandwidth 5150–5850 MHz

Peak gain 7.0 dBi

Polarization Vertical

E-plane 3-dB beamwidth 50°

H-plane 3-dB beamwidth 70°

Front-to-back ratio 18 dB

Cable length and type 36 in. (91.4 cm)

Plenum rated, UV

stable

Connector type RP-TNC plug

Length 5.7 in. (14.5 cm)

Width 4.3 in. (10.9 cm)

Height 0.7 in. (1.8 cm)

Weight 8 oz (0.2 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 80 mph (128.7 kph)

H-Plane Pattern E-Plane Pattern

Cisco Aironet 7-dBi Diversity Patch Antenna (AIR-ANT5170P-R)

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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 uses an 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.

Cisco Aironet 7-dBi Diversity Patch Antenna (AIR-ANT5170P-R)

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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 antennas transmit and receive 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:

•Mount the antenna to best take advantage of its propagation characteristics. Mount it as high as

possible and oriented so that the cables are pointing down (towards the ground).

•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 in which to install your antenna:

–

Dry 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 causes signals to reflect, causing poor penetration.

•Install the antenna away from 5-GHz cordless phones. These products can cause signal interference

because they operate in the same frequency range as the device your antenna is connected to.

Cisco Aironet 7-dBi Diversity Patch Antenna (AIR-ANT5170P-R)

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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 Double this height 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

The antenna is designed to be installed on a flat, vertical surface indoors or outdoors. A mounting

hardware kit is provided with the antenna.

Tools and Equipment Required

A mounting installation kit is shipped with the antenna and consists of the following hardware:

•Four #8 screws

•Four #8 plastic anchors

•Four flanged washers

•Four end caps

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

•A Phillips screwdriver

•A drill

•A 3/16-in. (4.7 mm) drill bit (for drywall installation; other surfaces may require a different type and

size)

•A pencil

•A small mallet or hammer

The following sections contain typical procedures for installing the antenna on a mast. Your installation

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

Cisco Aironet 7-dBi Diversity Patch Antenna (AIR-ANT5170P-R)

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Installing the Antenna

Mounting on a Vertical Surface

Follow these steps to mount your antenna on a vertical surface. This procedure describes mounting the

antenna on a drywall surface. If you are mounting the antenna on any other type of surface, your

procedure may vary slightly.

Step 1 Determine the location in which you will mount the antenna.

Step 2 Use the antenna as a template to mark the locations of the four mounting holes.

Step 3 Use a drill and a 3/16-in. (4.7 mm) drill bit to drill four holes at the locations you marked in Step 2.

Step 4 Start a plastic anchor into each hole.

Step 5 Use a mallet or small hammer to seat the anchors into the wall.

Step 6 Install a flanged washer on each #8 screw. Make sure the flange end of the washer faces out.

Step 7 Align the antenna’s mounting holes with the anchors.

Caution Make sure the antenna cables are pointing down (towards the ground) to ensure proper orientation. If the

antenna is not mounted properly, degraded performance could result.

Step 8 Holding the antenna in place, start the #8 screw into each antenna mounting hole.

Step 9 Use a Phillips screwdriver to secure the antenna to the wall. Do not overtighten.

Step 10 Install the end caps onto the flanged washers.

Caution If you install additional lengths of antenna cable, be sure to install a suitable strain relief. The antenna

may be damaged if you do not eliminate the extra weight of the cable. The antenna is not designed to

support the weight of a cable longer than the installed 3-ft (91.4 cm) cable.

Antenna Cable Information

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 causes signal loss (the longer

the run, the greater the loss).

Note The antenna cable has a 0.5 in. (12.7 mm) bend radius. Sharply bending or crimping the cable may cause

a degredation in performance.

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.

Cisco Aironet 7-dBi Diversity Patch Antenna (AIR-ANT5170P-R)

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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

Follow these steps to ground the antenna in accordance with national electrical code instructions.

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

clamp the wire to a good earth ground.

Step 2 Secure the lead-in wire to an antenna discharge unit and the 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 Install a lightning arrestor.

Step 8 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 Aironet 7-dBi Diversity Patch Antenna (AIR-ANT5170P-R)

78-16468-02

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)

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