Aruba Networks IAP-175 User manual

Aruba IAP-175 Outdoor Instant Access Point
Installation Guide
0511096-02 | November 2012 1
The Aruba IAP-175 is a resilient, environmentally hardened, outdoor rated, dual-radio, dual-band IEEE
802.11 a/b/g/n wireless access point. This outdoor access point is part of Aruba’s comprehensive wireless
network solution. The IAP-175 can operate as an Aruba virtual controller or as a member of an Aruba
Instant wireless network.
There are two versions of the IAP-175, which mainly differ in the way they receive power.
IAP-175P: PoE+ powered (802.3at)
IAP-175AC: AC powered (100 - 240 VAC)
Guide Overview
"IAP-175 Hardware Overview" on page3 provides a detailed hardware overview of the three IAP-175
models.
"Outdoor Planning and Deployment Considerations" on page7 provides key questions to ask and items
to consider when deploying an outdoor wireless network.
"Installing Antennas" on page12 describes how to installing antennas.
"Weatherproofing Connections" on page12 provides instructions on weatherproofing the AP’s
connectors.
"Installing the IAP-175" on page19 describes the multi-step process for a successful installation and
deployment of an IAP-175.
"Safety and Regulatory Compliance" on page30 provides an overview of safety and regulatory
compliance information.
IAP-175 Operations
Wireless access point (IEEE 802.11 a/b/g/n)
Wireless air monitor (IEEE 802.11 a/b/g/n)
Enterprise mesh point
Enterprise mesh portal
Protocol-independent networking functionality
IAP-175P: IEEE 802.3at Power over Ethernet+ (PoE+) compatible
IAP-175AC: IEEE 802.3af Power Sourcing Equipment (PSE) device
The IAP-175 requires Aruba 3.0 Instant or later.
The IAP-175AC can function as a Power Sourcing Equipment (PSE) device by providing power through its Ethernet
port in compliance with the IEEE 802.3af standard.

2Aruba IAP-175 Outdoor Instant Access Point | Installation Guide
Package Contents
IAP-175 Access Point
IAP-175 Mounting Bracket
Solar Shield
Pole Anchors x 2
M4 x 16 bolts, flat washers, and spring washers x4 (These bolts are attached to the solar shield)
M6 x 30 bolts, flat washers, and spring washers x2
M4 x 12 bolt, external-tooth washer, and OT copper lug x1
M8 x 110 bolt, flat washers, spring washers, and nuts x4
Metal Weatherproof Caps x2 for use on unused antenna interfaces
RJ-45 Connector Kit with plastic RJ-45 connector (IAP-175P only)
RJ-45 Connector Kit with metal RJ-45 connector (IAP-175AC only)
USB Console Cable
Installation Guide
Inform your supplier if there are any incorrect, missing, or damaged parts. If possible, retain the carton, including
the original packing materials. Use these materials to repack and return the unit to the supplier if needed.

Aruba IAP-175 Outdoor Instant Access Point | Installation Guide 3
IAP-175 Hardware Overview
The following section describes the hardware features of the IAP-175.
Figure 1 IAP-175 Overview (IAP-175P shown)
Antenna Interface
The IAP-175 requires the use of detachable outdoor-rated antennas. Select the correct antenna type to
support the required frequency band (2.4 or 5 GHz) and the desired coverage pattern.
The IAP-175 is equipped with four, female N-type antenna interfaces; two on the top of the AP and two on
the bottom. The interfaces are grouped into diversity pairs, one pair is marked R0 (Radio 0) and the other
pair marked as R1 (Radio 1). R0 supports the 5 GHz frequency band and R1 supports the 2.4 GHz radio
band.
1 Antenna Interface (Radio 1) 5 Antenna Interface (Radio 0)
2 USB Console Interface 6 Antenna Interface (Radio 1)
3 Reserved (IAP-175P) or
Power Interface (IAP-175AC)
7 Ethernet Interface (PoE)
4 Antenna Interface (Radio 0) 8 Grounding Point
2
1
3
4
8
7
65

4Aruba IAP-175 Outdoor Instant Access Point | Installation Guide
USB Console Interface
A USB serial console port is provided for connection to a terminal, allowing direct local management. Use
the included USB console cable to connect to the AP. You can download the necessary driver for USB-
UART adapter from support.arubanetworks.com under the Tools & Resources tab.
Use the following setting to access the terminal:
Power Interface
The type of power interface on your IAP-175 depends on which model you have purchased.
IAP-175P: This version does not include a power interface since it is only powered by PoE+ (802.3at).
IAP-175AC: 1x AC power connector
Ethernet Interface
The IAP-175 is equipped with a 10/100/1000Base-T Gigabit Ethernet port for wired network connectivity. On
the IAP-175P, this port also supports IEEE 802.3at Power over Ethernet (PoE), accepting 48 VDC as a
standards-defined powered device (PD) from a power sourcing equipment (PSE) device, such as a PoE
midspan injector. Inversely, the IAP-175AC can act as a PSE device to provide IEEE802.3af PoE power to
devices connected to the Ethernet port.
Grounding Point
Always remember to protect your IAP-175 by installing grounding lines. The ground connection must be
complete before connecting power to the IAP-175 enclosure. Ensure that the resistance is less than 5 ohm
between the ground termination point and the grounding tier.
IAP-175P LED Status Indicators
The IAP-175 include visual indicators for power, link, and radio status. Additionally, each radio has a four-
LED array that indicates received signal strength (RSSI).
Table 1 Console Settings
Baud Rate Data Bits Parity Stop Bits Flow Control
9600 8 None 1 None
!
For the IAP-175AC, only use the AC power cord with model number CBL-AC-INTL.
The RSSI LED indicators represent varying degrees in the RSSI level. The absence of a signal is indicated by no
LED response, and full signal strength is indicated when all four LEDs are active and lit.

Aruba IAP-175 Outdoor Instant Access Point | Installation Guide 5
Figure 2 LED Layout
Table 2 lists the meanings of the LEDs on the IAP-175P outdoor access point.
Table 2 IAP-175P LED Status Indicators
LED Function Indicator Status
P/S AP Power/Ready
Status Off No power to AP
Blinking Device booting, not ready
On Device ready
POE N/A N/A Not currently used
ENT LAN/Network Link
Status Off Ethernet link unavailable
On (Amber) 10/100 Mbs Ethernet link
negotiated
On (Green) 1000 Mbs Ethernet link negotiated
Blinking Traffic on Ethernet link
R0 Radio 0 Status Off Radio 0 disabled
On (Amber) Radio 0 enabled in WLAN mode
Blinking Air Monitor (AM) mode
R1 Radio 1 Status Off Radio 1disabled
On (Blue) Radio 1 enabled in WLAN mode
Blinking Air Monitor (AM) mode
RSSI (Radio 0) RSSI Level for
Radio 0 Off RSSI disabled/no signal
4 Step Progressive
Bars (Red)
25/50/75/100%
Each bar represents a progressive
increase in signal strength, with 4
bars representing maximum signal
strength (100%).
Minimum data rate: One lit LEDs
Maximum data rate: Four lit LEDs
RSSI (Radio 1) RSSI Level for
Radio 1 Off RSSI disabled/no signal
4 Step Progressive
Bars (Blue)
25/50/75/100%
Each bar represents a progressive
increase in signal strength, with 4
bars representing maximum signal
strength (100%).
Minimum data rate: One lit LEDs
Maximum data rate: Four lit LEDs
P/S ETH
POE
RSSI for Radio 1
RSSI for Radio 0

6Aruba IAP-175 Outdoor Instant Access Point | Installation Guide
IAP-175AC LED Status Indicators
The IAP-175 include visual indicators for power, link, heat and radio status. Additionally, each radio has a
four-LED array that indicates received signal strength (RSSI).
Figure 3 LED Layout
Table 3 lists the meanings of the LEDs on the IAP-175AC outdoor access points.
The RSSI LED indicators represent varying degrees in the RSSI level. The absence of a signal is indicated by no
LED response, and full signal strength is indicated when all four LEDs are active and lit.
Table 3 IAP-175AC LED Status Indicators
LED Function Indicator Status
P/S AP Power/Ready
Status Off No power to AP
Blinking Device booting, not ready
On Device ready
POE Displays PSE
power output
status
Off Non-powered device
(0Ω<Rport<200Ω) or Port open
(Rport>1MΩ)
Green Port on (25kΩ)
1 Flash: Low signature
resistance (300Ω<Rport<15kΩ)
2 Flashes: High signature
resistance
(33kΩ<Rport<500kΩ)
5 Flashes: Port overload fault
9 Flashes: Power management
allocation exceeded
Heat Displays the
heating status of
low temperature
Off Unit is not in heating status
Blinking (Blue) Unit is pre-heating
ENT LAN/Network Link
Status Off Ethernet link unavailable
On (Amber) 10/100 Mbs Ethernet link
negotiated
On (Green) 1000 Mbs Ethernet link negotiated
Blinking Traffic on Ethernet link
P/S ETH
POE HEAT
RSSI for Radio 1
RSSI for Radio 0

Aruba IAP-175 Outdoor Instant Access Point | Installation Guide 7
Outdoor Planning and Deployment Considerations
Prior to deploying an outdoor wireless network, the environment must be evaluated to plan for a successful
Aruba WLAN deployment. Successfully evaluating the environment enables the proper selection of Aruba
APs and antennas and assists in the determination of their placement for optimal RF coverage. This process
is considered WLAN or RF planning and Aruba’s system engineers can assist in the outdoor planning
process.
Scale Requirements
The potentially immense scale of outdoor deployments requires consideration of factors that may not be as
important in a typical indoor deployment:
Range (distance): Range or distance between APs must be taken into account during the planning phase.
Available AP mounting locations are often far less flexible in an outdoor environment. Regardless of
these outdoor restrictions, the desired goal is to achieve results similar to an indoor deployment: a
“dense” RF deployment that supports advanced Aruba features, such as ARM, efficient client roaming,
and failover.
Elevation: Proper consideration and planning for elevation differences between APs (AP to AP) and AP
to Client can be critical to success. To plan for these differences in elevation, it is important to
understand the 3D coverage pattern provided by the antennas that will be deployed in the environment.
R0 Radio 0 Status Off Radio 0 disabled
On (Amber) Radio 0 enabled in WLAN mode
Blinking Air Monitor (AM) mode
R1 Radio 1 Status Off Radio 1disabled
On (Blue) Radio 1 enabled in WLAN mode
Blinking Air Monitor (AM) mode
RSSI (Radio 0) RSSI Level for
Radio 0 Off RSSI disabled/no signal
4 Step Progressive
Bars (Red)
25/50/75/100%
Each bar represents a progressive
increase in signal strength, with 4
bars representing maximum signal
strength (100%).
Minimum data rate: One lit LEDs
Maximum data rate: Four lit LEDs
RSSI (Radio 1) RSSI Level for
Radio 1 Off RSSI disabled/no signal
4 Step Progressive
Bars (Blue)
25/50/75/100%
Each bar represents a progressive
increase in signal strength, with 4
bars representing maximum signal
strength (100%).
Minimum data rate: One lit LEDs
Maximum data rate: Four lit LEDs
Table 3 IAP-175AC LED Status Indicators (Continued)
LED Function Indicator Status
Improper termination of access points installed in the United States configured to non_US model controllers will be
violation of the FCC Grant of equipment authorization. Any such willful or intentional violation may result in a
requirements by FCC to immediate termination of operation and my be subject to forfeiture (47 CFR 1.80).

8Aruba IAP-175 Outdoor Instant Access Point | Installation Guide
Non-Fixed Considerations: The RF environment might change on a day to day basis. Keep non-fixed
items, such as shipping containers, vehicles, and future building construction, in mind when planning for
an outdoor deployment.
Identifying Known RF Absorbers/Reflectors/Interferences Sources
Identifying known RF absorbers/reflectors/interference sources while out in the field during the installation
phase is critical. Even though outdoor environments consist of fewer RF absorbers/reflectors/interference
sources compared to indoor environments, ensure that these sources are identified and taken into
consideration when installing and mounting an AP to its fixed outdoor location.
RF Absorbers
Cement/Concrete
Natural Items: Trees/vegetation
Brick
RF Reflectors
Metal Objects: Roof-installed air-conditioning equipment, chain link fences (depending on aperture
size), other wire fences, or water pipes
RF Interference Sources
Other 802.11a/b/g/n or broadband access equipment operating nearby
Industrial RF welding equipment or other Industrial, Scientific and Medical (ISM) equipment that utilizes
RF to heat or alter the physical properties of materials
Military, Commercial Aviation or Weather Radar Systems
Line of Sight (Radio Path Planning)
A wireless bridge or mesh link requires a “radio line of sight” between the two antennas for optimum
performance. The concept of radio line of sight involves the area along a link through which the bulk of the
radio signal power travels. This area is known as the first Fresnel Zone of the radio link. For a radio link, no
object (including the ground) must intrude within 60% of the first Fresnel Zone.
Figure 4 illustrates the concept of a good radio line of sight.
Figure 4 Line of Sight
If there are obstacles in the radio path, there may still be a radio link but the quality and strength of the
signal will be affected. Calculating the maximum clearance from objects on a path is important as it directly
Radio Line of Sight
Visual Line of Sight

Aruba IAP-175 Outdoor Instant Access Point | Installation Guide 9
affects the decision on antenna placement and height. It is especially critical for long-distance links, where
the radio signal could easily be lost.
When planning the radio path for a wireless bridge or mesh link, consider these factors:
Avoid any partial line of sight between the antennas
Be cautious of trees or other foliage that may be near the path, or may grow and obstruct the path.
Be sure there is enough clearance from buildings and that no building construction may eventually block
the path.
For very long distance links, the curvature of the earth (20 cm per km) may need to be considered in the
calculation of relative heights.
Check the topology of the land between the antennas using topographical maps, aerial photos, or even
satellite image data (software packages are available that may include this information for your area)
Avoid a path that may incur temporary blockage due to the movement of cars, trains, or aircraft.
Antenna Height
A reliable wireless bridge or mesh link is usually best achieved by mounting the antennas at each end high
enough for a clear radio line of sight between them. The minimum height required depends on the distance
of the link, obstacles that may be in the path, topology of the terrain, and the curvature of the earth (for
links over 3 miles).
For long-distance links, the AP may have to be mounted on masts or poles that are tall enough to attain the
minimum required clearance. Use the following table to estimate the required minimum clearance above
the ground or path obstruction (for 5 GHz bridge links).
Table 4 Antenna Minimum Height and Clearance Requirements
Total Link Distance
Max Clearance for
60% of First Fresnel
Zone at 5.8 GHz
Approximate Clearance
for Earth Curvature
Total Clearance
Required at
Mid-point of Link
0.25 mile (0.402 km) 4.6 ft (1.4 m) 0.007 ft (0.002 m) 4.6 ft (1.4 m)
0.5 mile (0.805 km) 6.2 ft (1.9 m) 0.03 ft (0.010 m) 6.2 ft (1.9 m)
1 mile (1.6 km) 8.9 ft (2.7 m) 0.13 ft (0.04 m) 8.9 ft (2.7 m)
2 miles (3.2 km) 12.5 ft (3.8 m) 0.5 ft (0.15 m) 13.1 ft (4.0 m)
3 miles (4.8 km) 15.4 ft (4.7 m) 1.0 ft (0.3 m) 16.4 ft (5.0 m)
4 miles (6.4 km) 17.7 ft (5.4 m) 2.0 ft (0.6 m) 19.7 ft (6.0 m)
5 miles (8 km) 20 ft (6.1 m) 3.0 ft (0.9 m) 23 ft (7.0 m)
7 miles (11.3 km) 23.6 ft (7.2 m) 6.2 ft (1.9 m) 30 ft (9.1 m)
9 miles (14.5 km) 27 ft (8.2 m) 10.2 ft (3.1 m) 37 ft (11.3 m)
12 miles (19.3 km) 30.8 ft (9.4 m) 18.0 ft (5.5 m) 49 ft (14.9 m)
15 miles (24.1 km) 34.4 ft (10.5 m) 28.0 ft (8.5 m) 62.7 ft (19.1 m)
To avoid any obstruction along the path, the height of the object must be added to the minimum clearance required
for a clear radio line of sight. Consider the following simple example, illustrated in Figure 5.

10 Aruba IAP-175 Outdoor Instant Access Point | Installation Guide
Figure 5 Antenna Height and Line of Sight
A wireless bridge or mesh link is deployed to connect building A to building B, which is located three miles
(4.8 km) away. Mid-way between the two buildings is a small tree-covered hill. From the above table it can
be seen that for a three-mile link, the object clearance required at the mid-point is 4.7 m (15.4 ft). The tree
tops on the hill are at an elevation of 17.7 m (58.1 ft), so the antennas at each end of the link need to be at
least 22.4 m (73.5 ft) high. Building A is six stories high, or 20 m (66 ft), so a 2.4 m (7.9 ft) mast or pole must
be constructed on its roof to achieve the required antenna height. Building B is only three stories high, or 9
m (30 ft), but is located at an elevation that is 12 m (39 ft) higher than building A. To mount an antenna at
the required height on building B, a mast or pole of 1.4 m (4.6 ft) is needed.
Antenna Position and Orientation
Once the required antenna height has been determined, other factors affecting the precise position of the
wireless bridge or mesh link must be considered:
Be sure there are no other radio antennas within 2 m (6 ft) of the wireless bridge or mesh link. These
include other WiFi radio antennas.
Place the wireless bridge or mesh link away from power and telephone lines.
Avoid placing the wireless bridge or mesh link too close to any metallic reflective surfaces, such as roof-
installed air-conditioning equipment, tinted windows, wire fences, or water pipes. Ensure that there is at
least 5 feet clearance from such objects.
The wireless bridge or mesh link antennas at both ends of the link must be positioned with the same
polarization direction, either horizontal or vertical. Proper alignment helps to maximize throughput.
Radio Interference
The avoidance of radio interference is an important part of wireless link planning. Interference is caused by
other radio transmissions using the same or an adjacent channel frequency. You should first scan your
proposed site using a spectrum analyzer to determine if there are any strong radio signals using the 802.11a/
b/g channel frequencies. Always use a channel frequency that is furthest away from another signal.
AB
3 miles (4.8 km)
4.7 m
17.7 m
20 m
2.4 m
12 m
9m
1.4m
Radio Line of Sight
Visual Line of Sight
!
Never construct a radio mast, pole, or tower near overhead power lines.
Local regulations may limit or prevent construction of a high radio mast or tower. If your wireless bridge or mesh link
requires a high radio mast or tower, consult a professional contractor for advice.

Aruba IAP-175 Outdoor Instant Access Point | Installation Guide 11
If radio interference is still a problem with your wireless bridge or mesh link, changing the antenna
direction may improve the situation.
Weather Conditions
When planning wireless bridge or mesh links, you must take into account any extreme weather conditions
that are known to affect your location. Consider these factors:
Temperature: The wireless bridge or mesh link is tested for normal operation in temperatures from -30ºC
to 55ºC. Operating in temperatures outside of this range may cause the unit to fail.
Wind Velocity: The wireless bridge or mesh link can operate in winds up to 165 miles per hour. You must
consider the known maximum wind velocity and direction at the site and be sure that any supporting
structure, such as a pole, mast, or tower, is built to withstand this force.
Lightning: To protect against lightning induced surges, the IAP-175 requires lightning protection on the
radio interface ports.
Rain: The wireless bridge or mesh link is weatherproofed against rain. However, it is recommended to
apply weatherproof sealing tape around the Ethernet port and antenna connectors for extra protection.
If moisture enters a connector, it may cause a degradation in performance or even a complete failure of
the link.
Snow and Ice: Falling snow, like rain, has no significant effect on the radio signal. However, a buildup of
snow or ice on antennas may cause the link to fail. In this case, the snow or ice has to be cleared from
the antennas to restore operation of the link.
Ethernet Cabling
When a suitable antenna location has been determined, you must plan a cable route from the wireless
bridge or mesh link outdoors to a suitable power and/or network source.
Consider these points:
The Ethernet cable length should never be longer than 90 m (295 ft).
Determine a building entry point for the cable (if applicable).
Determine if conduits, bracing, or other structures are required for safety or protection of the cable.
For lightning protection at the power injector end of the cable, consider using a lightning arrestor
immediately before the cable enters the building
Grounding
It is important that the wireless bridge or mesh link, cables, and any supporting structures are properly
grounded. Each IAP-175 access point includes a grounding screw for attaching a ground wire. Be sure that
grounding is available and that it meets local and national electrical codes. Ground the access point first
using the external ground stud on the unit before making any other connection.
!
An Aruba Lightning Arrestor, AP-LAR-1, must be installed on each antenna port for protection against lightning
induced surges. Failure to use an AP-LAR-1 can void the warranty of an Aruba outdoor AP model and renders the
AP susceptible to failure from lightning induced surges

12 Aruba IAP-175 Outdoor Instant Access Point | Installation Guide
Installing Antennas
1. Before connecting the antennas, identify which of your antennas are 2.4 GHz and which are 5 GHz. On
the AP-175, the 2.4 GHz antennas must be installed the R1 radio interfaces and the 5.0 GHz must be
installed on the R0 radio interfaces.
2. After identifying which antennas will go where, install them by placing the antenna connector over the
corresponding connector and the AP and turning the connector clockwise until hand tight. Repeat this
process for each antenna.
3. Place the included metal weatherproof caps over any unused antenna interfaces by turning them
clockwise until hand tight.
Weatherproofing Connections
Weatherproofing your antenna and/or cable connections on your outdoor AP is essential to reliability and
longevity of your product. This process prevents water from entering the AP or antennas through the
connectors.
A good weatherproofing job consists of three wrappings:
1. electrical tape
2. butyl rubber
3. electrical tape
The first wrapping of tape should be at least two layers, followed by a single wrap of butyl rubber, and four-
layer wrap of electrical tape. This provides good protection from water, heat, and other potential hazards
that could damage your AP or antennas.
Additionally, wrap your connections such that water is always directed down and away from connections.
Required Items and Tools
3/4” (19 mm) Vinyl Electrical Tape
Butyl Rubber Tape
Knife or Box Cutter
Types of Connections
The following sections provide guidance on weatherproofing directly connected antennas (Figure 6) and
cable connections (Figure 7). The same materials are needed for weatherproofing both types of
connections but the procedure is slightly different. For weatherproofing directly connected antennas, see
"Weatherproofing Directly Connected Antennas" on page14. For weatherproofing cable connections, see
"Weatherproofing Cable Connections" on page17.

Aruba IAP-175 Outdoor Instant Access Point | Installation Guide 13
Figure 6 Directly Connected Antennas
Figure 7 Cable Connections
AP175_11
Weep holes
AP175_16
Connectors on bottom of antenna
N-type connector
on an RF cable
N-type
connector
on a pigtail

14 Aruba IAP-175 Outdoor Instant Access Point | Installation Guide
Important Points to Remember
Do not cover the weep holes on the antennas. Doing so can restrict the release of condensation from the
antennas.
Proper weatherproofing is not a fast process. Set aside ample time to complete the steps outlined below.
When wrapping, make the each layer of tape as flat as possible. Wrinkles and folds in the tape create
places for water and moisture to gather.
Weatherproofing Directly Connected Antennas
First Wrapping of Tape
1. Before wrapping the antennas, locate the weep holes (Figure 6). Weep holes allow condensation that
has built up inside the antenna to escape.
2. Prepare the antenna connector by cleaning and drying it.
3. Cut a 4” (100 mm) strip of electrical tape from the roll. Pre-cutting the tape into strips makes in easier to
maneuver the tape around the antennas and other components of the AP’s case.
4. Beginning just below the weep holes, tightly wrap the connection with a layer of the 3/4” (19mm)
electrical tape. Overlap the tape to a half-width.
5. Repeat steps 3 and 4 until the wrapping extends all the way to the AP’s case.
Figure 8 First Wrapping of Tape
Wrap tape from
just above knurled
section to base of
antenna mount
Pieces of tape as needed
Leave
weep holes
uncovered
AP175_12

Aruba IAP-175 Outdoor Instant Access Point | Installation Guide 15
Wrapping of Butyl Rubber
1. Cut a 3/4” (19 mm) strip of butyl rubber.
2. Wrap the strip of rubber around the taped connector (Figure 9)
3. Join the two ends by pushing them together until there is no longer a seam (Figure 10).
Figure 9 Butyl Rubber Placement
Figure 10 Butyl Rubber Wrap
Cut 3/4” strip
of rubber
Squeeze thinner
& wider Wrap rubber
around base
of antenna
mount
AP175_13
Wrap rubber
around base
of antenna
mount
Squeeze to
bond rubber
to itself
Rubber will
be wrapped
with 4 layers
of tape
AP175_14

16 Aruba IAP-175 Outdoor Instant Access Point | Installation Guide
Second Wrapping of Tape
1. Cut a 4” (100 mm) strip of electrical tape from the roll.
2. Where you begin wrapping depends on the orientation of the antenna. Water should flow in the opposite
direction of the wrapping to prevent water from entering the connector between the layers of tape.
Therefore, if the antenna is facing up, you should begin wrapping at the AP end of the connector. This
will ensure that your fourth and final layer will be layered correctly. Conversely, if your antenna is facing
down, you should begin wrapping on the antenna end of the connector.
3. After completing the fourth layer of tape, check your work to ensure there are no places where water
can collect. If there are, you must smooth out those areas with additional layers of tape or remove the
weatherproofing and begin again.
Figure 11 Completed Wrapping (Antenna on Top of AP)
4. Repeat this process for all connectors.
First and third layers wrap
top to bottom
AP175_15
Rubber will
be wrapped
with 4 layers
of tape
Second and final layers wrap
bottom to top
Pieces of tape as needed

Aruba IAP-175 Outdoor Instant Access Point | Installation Guide 17
Weatherproofing Cable Connections
First Wrapping of Tape
1. Prepare the antenna connector by cleaning and drying it.
2. Cut a 4” (100 mm) strip of electrical tape from the roll. Pre-cutting the tape into strips makes in easier to
maneuver the tape around the connectors and other components but is not required.
3. Beginning at the top of the connector, tightly wrap the connection with a layer of the 3/4” (19mm)
electrical tape. Overlap the tape to a half-width.
4. Repeat steps 3 and 4 until the wrapping extends all the way to the cable’s insulation.
Figure 12 First Wrapping of Tape
Wrap tape
from antenna
connector base
to cable
Pieces of tape as needed
AP175_17

18 Aruba IAP-175 Outdoor Instant Access Point | Installation Guide
Wrapping of Butyl Rubber
1. Cut a piece of butyl rubber large enough to wrap around the connector and extended past the first layer
of tape.
2. Wrap the strip of rubber around the taped connector (Figure 13)
3. Join the two ends by pushing them together until there is no longer a seam (Figure 14).
Figure 13 Butyl Rubber Placement
Figure 14 Butyl Rubber Wrap
Stretch thinner
& wider
AP175_18
Wrap rubber
around connector
and cable
Squeeze to
bond rubber
to itself
Rubber will
be wrapped
with 4 layers
of tape
AP175_19
Wrap rubber
around connector
and cable

Aruba IAP-175 Outdoor Instant Access Point | Installation Guide 19
Second Wrapping of Tape
1. Cut a 4” (100 mm) strip of electrical tape from the roll.
2. Using 3/4” (19mm) electrical tape, begin wrapping at the connector and create four layers.
3. After completing the fourth layer of tape, check your work to ensure there are no places where water
can collect. If there are, you must smooth out those areas with additional layers of tape or remove the
weatherproofing and begin again.
Figure 15 Completed Wrapping
4. Repeat this process for all connectors.
Installing the IAP-175
The IAP-175 can be installed on a wall or attached to a pole. The following section describes how to attach
the necessary hardware to the AP and how to mount the AP in the selected location.
Selecting the Installation Site
The site should be located within at least a 60% range of the 1st fresnel zone without obstacles to provide
line of sight (LOS) transmission, increase coverage capacity, and minimize the number of necessary
sites.
First and third layers wrap
top to bottom
AP175_20
Pieces of tape as needed
Rubber will be wrapped
with 4 layers of tape
Second and final layers wrap
bottom to top
Service to all Aruba products should be performed by trained service personnel only.
!
Access points are radio transition devices and as such are subject to governmental regulation. Network
administrators responsible for the configuration and operation of access points must comply with local broadcast
regulations. Specifically, access points must use channel assignments appropriate to the location in which the
access point will be used and comply with regulatory requirements for Outdoor intentional radiators.

20 Aruba IAP-175 Outdoor Instant Access Point | Installation Guide
If no LOS is secured, areas in non-line-of-sight (NLOS) areas could be covered as well, but the distance
of coverage and area of coverage are decreased; more sites are needed to provide coverage for same
area than in the LOS scenario.
Interference must be considered in site selection. The new site should avoid known interference, unless
the interference is controllable.
Keep the IAP-175 away from places that are susceptible to high temperature, dust, harmful gas,
inflammable, explosive, electromagnetic interference (high power radar, radio station and transformer),
unstable voltage, heavy vibration, or loud noise. In engineering design, the site should be selected
according to the network planning and technical requirements of communications equipment, as well as
the considerations such as climate, hydrology, geology, earthquake, electric power, and transportation.
Installing the IAP-175 on a Pole
1. Attach the IAP-175 on the mounting bracket using the two M6 x30 bolts (with flat and spring washers)
on each side of the mounting bracket.
Figure 16 Attaching the mounting bracket to the AP
2. Attach the mounting bracket (with IAP-175) on the pole using four M8 x110 bolts (with flat washers,
spring washers and nuts) and the pair of pole anchors.
AP175_03