Company X
Pre-installation
Wi-Fi Site Survey Report
Customer Y
TechAccess Belgium
Singel 5
B-2550 Kontich
General Info
3
Executive Summary
Introduction into Wireless LAN Site Surveys
Scope of the Wireless LAN Site Survey
Wireless LAN Applications
6
6
6
7
IEEE 802.11n/ac WLAN Site Survey
7
Results of the Wireless LAN Site Survey
8
Customer Y
Access Points
Mounting kit
8
9
9
Requirements for the Wireless LAN (WLAN)
Coverage Areas
10
10
Wireless LAN Applications and Their Specific RF Requirements
11
WLAN Requirements for Mobile Data Applications
11
Procedures for a WLAN Pre-Installation Site Survey
Used Tools during the WLAN Site Survey
12
13
Visual Inspection
14
Coverage Analysis Results
Timestamp of Measurements
Signal Coverage
14
14
14
Analysis Explanation
Threshold for Mobile Data Applications
Results
15
15
15
Signal to Noise Ratio (SNR)
17
Analysis Explanation
Threshold for Mobile Data Applications
Results
17
17
17
Data Rate
19
Results
19
Interference Analysis Reports
Timestamp of Measurements
Rogue Signals
20
20
20
Rogue signals in non-overlapping channels
Rogue signals in overlapping channels
Detected Rogue Signals
Results
20
20
20
21
Co-Channel Interference
22
Co-channel Interference in 802.11bg networks
Co-channel Interference in 802.11a networks
Co-channel Interference in 802.11n networks
Co-channel Interference in 802.11ac networks
Co-channel Interference in a Controller Based Wireless Network
Spectrum Analysis (Non Wi-Fi Interference)
22
22
22
23
23
24
Non-WIFI Interference Sources
Analysis Explanation
Spectrum Sweep 2.4GHz (2.400GHz – 2.500GHz)
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26
27
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Spectrum Sweep 5GHz (5.150GHz – 5.725GHz)
28
Installation Report
Power Options
29
29
Access Point Power Options
29
Ground Plans with Access Point Layout
Photos & Mounting Instructions
30
31
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General Info
TechAccess is a distributor combining an enthusiastic team of experienced and dedicated professionals in the IT
distribution. TechAccess stands for distributing high-end solutions with products of the highest quality.
Most IT distributors in the Benelux are only specialized in logistics and box moving. Our experience has taught
us that many resellers are looking for more than just a logistical partner. They also want after sales support for
the products they buy from us.
This is exactly the role that TechAccess is willing to play where necessary. The focus of TechAccess is therefore
on the relationship with the reseller. TechAccess wants (hence the name) and will make new technology easily
and quickly accessible for resellers.
TechAccess is concentrating on following growing markets:
 Networking
 Security
 Wireless
 Outdoor Wireless
 Storage & Servers
 IP-Camera
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Belgium
Tel: +32 3 457 96 00
Fax: +32 3 457 98 00
E-mail: [email protected]
Author: Tom Thielemans
GSM: +32 478 62 11 72
E-mail: [email protected]
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Company X
Company X is an IT company…
Since 2004, Company X specializes in …
Company X
Site Survey Road 6
2550 Kontich
Belgium
Contact Person: John Doe
E-mail: [email protected]
Website: www.companyX.be
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Customer Y
Customer Y is a Ostend family owned business specialized in…
Contact Person: Jane Smith
E-mail: [email protected]
Website: www.customerY.be
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Executive Summary
Introduction into Wireless LAN Site Surveys
The implementation of a wireless network is anything but an easy exercise. A thorough knowledge of Wireless
LAN applications, their requirements and RF planning are required. The last one is probably the most complex
part as only a few people are trusted with the concepts of RF (Radio Frequency) planning.
Often underestimated, the site survey plays an imported part in the successful deployment of a Wireless LAN
project. Only a site survey can ensure how many wireless access points (AP’s) are needed, and where and how
the access points have to be installed. The site survey also determines if external antennas will be necessary
and/or additional mounting accessories to ensure a smooth and correct installation of the access points and
antennas.
A site survey implies more than just a visit to your location. The environment has to be measured by wireless
tools and professional software to determine an optimal RF design. The site survey will also check for interference
sources such as rogue signals and rogue access points. Additionally a spectrum analysis will be conducted to
detect non Wi-Fi interference that potentially could interfere with the proper operation of the wireless
infrastructure.
The use of a standard site survey design and access point set-up is impossible due to the fact that each location
is unique and that each application that will utilize the wireless infrastructure, requires a specific RF-design.
Differences in the RF-designs include access point layout patterns; RF cell overlaps as well as specific access point
installation methods, which must be determined onsite.
When planning a Wireless LAN deployment consideration should be given to future employments of the Wireless
LAN. Converting a Wireless LAN to support additional services beyond its initial deployment purpose is not simply
a matter of adding access points; it can require an additional site survey and the possible relocation of existing
access points (including cabling).
Scope of the Wireless LAN Site Survey
Customer Y requires a WLAN site survey (audit) for their warehouse in Ostend. The goal of this survey is to assess
the possible acquisition of a Wireless LAN infrastructure that should support data clients (handheld scanners) for
mobile data applications in all areas in the 5GHz frequency band.
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Wireless LAN Applications
The RF environment for the Wireless LAN infrastructure was audited for following applications:

IEEE 802.11a/n/ac standards (5GHz band)
o Mobile Data Applications
IEEE 802.11n/ac WLAN Site Survey
802.11n/ac access points have been chosen for deployment in this project. To ensure that the RF environment of
the coverage areas is suitable to deploy the 802.11n/ac technology and to also ensure that legacy Wireless LAN
clients (802.11b and 802.11g) are supported for the listed applications; 802.11n/ac access points and the legacy
clients required for the listed applications were used during the measurements.
802.11n is backwards compatible with prior 802.11 standards (802.11b, 802.11a and 802.11g) & 802.11ac is
backwards compatible with prior 802.11 standards (802.11a and 802.11n). The standards is designed to
accommodate future technology changes.
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Results of the Wireless LAN Site Survey
Customer Y
Vendor B Part #
Description
Quantity
Access Point Z
Vendor Access Point Z Wireless Access Point, 802.11n/ac, 2x2:2, dual radio,
integrated antennas
20
Mount Kit A
Vendor Access Point flat-surface (wall) mount kit (basic). Color: white
20
This BoM is based on the WLAN site survey report and includes the total amount of Vendor B access point(s) and
accessories(s) needed to roll out the Wireless LAN deployment.
No power source has been foreseen in the BoM for the access points and should be considered during the
design phase.
No WLAN controllers have been foreseen in the BoM and should be considered during the design phase.
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Access Points
Vendor B Access Point Z Wireless Access Point 2x2:2 (Omnidirectional)
Vendor
B
Mounting kit
Mounting Kit A
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Requirements for the Wireless LAN (WLAN)
Coverage Areas
The term “coverage areas” complies with areas that must conform to the Wireless LAN RF requirements for the
listed WLAN applications. The main coverage areas consist of all the zones marked in green.
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Wireless LAN Applications and Their Specific
RF Requirements
The term “Wireless LAN Applications and their specific RF Requirements” refers to the required signal strength,
signal to noise ratio (SNR), cell overlap and roaming path (if applicable) for each Wireless LAN application listed
in this document.
WLAN Requirements for Mobile Data Applications
RF signals are measured in units of “dBm”, with a signal of 0 dBm being the strongest, and signals of -100dBm
and below being the weakest.
As a general rule, Mobile Data applications should maintain:




A minimum signal strength threshold of at least -73dBm.
An SNR (Signal to Noise Ratio) of 20dB.
Each access point creates a coverage cell. These coverage cells should overlap one another by 10 to
15% in areas where roaming may occur. In these overlapping areas a minimum of -70dBm should be
received on the Data applications by at least 2 access points to provide smooth roaming.
A MCS 7/15 64-QAM 5/6 should be maintained on the client devices
These RF requirements shall comply for both the 802.11b/g/n standard (2.4GHz) and 802.11a/n/ac standard
(5GHz).
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Procedures for a WLAN Pre-Installation Site
Survey








Visually inspect the facility to look for potential RF barriers that could affect the normal operation.
Perform a Spectrum analysis with MetaGeek Chanalyser Pro to detect interference originating from
non Wi-Fi devices (Interference Analysis).
Perform a site survey with Metageek Chanalyzer Pro to detect interference originating from rogue
access points / signals.
Place the Vendor B Instant access points in the desired mounting locations while performing the site
survey using a compatible client device. Re-locate and/or add aditional access points if needed and
re-test.
Note down the hypotetical mounting locations of the access points on the received ground plans
stating the required coverage areas.
Note down additional information like extra mounting equipment, accessories, external antennas …
when applicable.
Take pictures of the hypotetical access point(s) mounting locations.
Document the findings.
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Used Tools during the WLAN Site Survey
Metageek Chanalyzer Pro version 5.6.1.2 with Wi-SPY DBX card
Access Point Z Wireless Access Point 2x2:2 (Omnidirectional)
Vendor
B
Toshiba PORTEGE Z30-A-12T laptop with integrated Intel Dual Band Wireless-AC 3160 card
Ekahau Site Survey Pro 8.6.2
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Visual Inspection

The received ground plans matched for all the coverage areas with the actual site lay-out.
Coverage Analysis Results
Timestamp of Measurements
Measurements were taken on Thursday 20st of October 2016 between 10.00h and 16.00h.
Signal Coverage
RF signals are the basis for Wi-Fi communication in the same way that copper wire is the basis for traditional
networks. Each wireless client (such as an end-user) must receive adequate levels of RF signal from its Access
Point in order to insure a reliable and well-performing connection.
RF signals are measured in units of “dBm”, with a signal of 0 dBm being the strongest, and signals of -100 dBm
and below being the weakest. The minimum acceptable signal will depend on the requirements of the network
and how it is used.
RF signals can be significantly affected by environmental factors. Solid objects will attenuate and reflect RF signals,
which can cause RF “dead spots” in otherwise well-served areas. For this reason, it is important to carefully survey
areas where wireless clients will need network service. Surveyors have paid special attention to the areas around,
and in the line of site of physical obstructions. Typical obstructions include any solid metal object, solid walls,
elevator shafts, and any shielded room such as an x-ray room.
Note: RF signals have the nature to fluctuate, when standing still on one certain point monitoring the receiving
signal; the signal will fluctuate due to multipath, reflection, ect.
During the survey, the surveyor is moving to collect the data points to create the heat maps, depending where
and when some data points are collected (reflection, multipath, client antenna between body and access point,
open doors, people…) the heat map will look different, remember that the displayed heat maps are a reflection
of the situation during a timestamp of the site survey, that’s why RF thresholds are needed to be respected, if RF
heat maps could be monitored live, we could compare them as a live weather forecast (always in motion).
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Analysis Explanation
In this section of the report you will find the heat maps of the areas that meet the signal coverage requirements
for the requested WLAN applications in both the 2.4 and 5GHz spectrum bands. These signal coverage
requirements are displayed using the color code on the legend bar below the heat map. Areas that do not meet
the requirements are displayed using the color white (transparent).
Threshold for Mobile Data Applications
As mentioned in the section “Wireless LAN Applications and their specific RF Requirements”, mobile data
applications require signal coverage at least at -73dBm in the 5GHz band and at least -70dBm in areas where
roaming may occur. Areas that do not meet the requirements are displayed using the color white (transparent).
Areas in between -70dBm and -73dBm are displayed using the color grey.
Results
All coverage areas meet the signal strength requirements for mobile data applications in the 5GHz frequency
band.
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Main coverage area
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Signal to Noise Ratio (SNR)
SNR is the signal level (in dBm) minus the noise level (in dBm). For example, a signal level of -53dBm measured
near an access point and typical noise level of -90dBm yields a SNR of 37dB.
SNR directly impacts the performance of a wireless LAN connection. A higher SNR value means that the signal
strength is stronger in relation to the noise levels, which allows higher data rates and fewer retransmissions all of
which offers better throughput. Of course the opposite is also true. A lower SNR requires Wireless LAN devices
to operate at lower data rates, which decreases throughput.
Analysis Explanation
In this section of the report you will find the heat maps of the areas that meet the SNR requirements for the
requested WLAN applications in both the 2.4 and 5GHz spectrum bands. These SNR requirements are displayed
using the color code on the legend bar below the heat map. Areas that do not meet the requirements are
displayed using the color white (transparent).
Threshold for Mobile Data Applications
As mentioned in the section “Wireless LAN Applications and their specific RF Requirements”, mobile device
applications require an SNR of at least 20dB in the 5GHz band. Areas that do not meet the requirements are
displayed using the color white (transparent).
Results
All coverage areas meet the SNR requirements for mobile data applications in the 5GHz frequency band.
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Main coverage area
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Data Rate
Data Rate is the speed at which the client device and the access point are communicating at. The higher the data
rate, the more data is expected to be transferred between the client devices and the access point in a period of
time. In 802.11, the advertised data rate is the theoretical maximum at which the devices are able to communicate.
However, the net data throughput between two devices is typically less than half of the advertised data rate.
Results
All coverage areas meet the data rate requirements for mobile data applications in the 5GHz frequency band.
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Interference Analysis Reports
Timestamp of Measurements
Measurements were taken on Thursday 20st of October 2016 between 10.000h and 16.00h.
Rogue Signals
A rogue signal is a signal detected within the coverage areas coming from an access point that is not a part of
the Wireless LAN infrastructure and is not connected to the corporate network. This signal is most often
generated from neighboring buildings /neighbors and is unmanageable; mostly you will find these signals at the
boundary of the facility/area.
Rogue signals can interfere with the Wireless LAN if no precautions are taken.
Rogue signals in non-overlapping channels
Rogue signals that are detected in non-overlapping channels will cause additional co-channel interference on
the corporate Wireless LAN. These signals will share the bandwidth with the corporate access points that are
configured with a non-overlapping channel scheme.
802.11 collision avoidance mechanisms will not permit the two signals on the same channel to transmit at the
same time in order to reduce collisions and retries. The auto RF mechanisms in a controller based Wireless LAN
infrastructure will constantly adjust the access point’s channel and power schemes to best mitigate co-channel
interference.
Rogue signals in overlapping channels
Rogue signals that are detected in overlapping channels will not share the bandwidth of the channels they overlap
but interfere with them. This is because the access point’s collision avoidance mechanisms will not be able to
communicate with each other.
When this is the case, the two access points in overlapping channels will transmit at the same time which will
result in collisions and retries.
Detected Rogue Signals
The Network Table displays a snapshot of rogue signals that were visible from the computer’s Wi-Fi card in the
coverage areas in both the 2.4 and 5GHz spectrum bands during the timestamp of the WLAN site survey with a
signal strength stronger then -85dBm.
(continued on next page)
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Radio MAC
SSIDs
Channel
Signal
Strength
(dBm)
Security
Max Rate
(Mbps)
Vendor
802.11
00:17:C5:E2:9D:5E
BDG-Intern
6
-82
WPA2-Personal
130
SonicWALL
b, g, n
00:17:C5:E2:9D:71
BDG-Guest
36+40
-83
WPA2-Personal
300
SonicWALL
n
00:17:C5:E2:9D:6F
BDG-Intern
36+40
-83
WPA2-Personal
300
SonicWALL
n
Results
We found some rogue signals with a signal strength stronger than -85dBm during the timestamp of the WLAN
site survey.
Recommendations
Vendor B Adaptive Radio Management (ARM) will continuously analyze the existing RF environments, and
automatically adjust the access points’ power and channel configurations in order to mitigate co-channel and
adjacent channel interference caused by rogue signals.
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Co-Channel Interference
A concern that arises whenever the number of access points is increased to adequately service VoWLAN or LBS
needs is the potential for excessive co-channel interference. Co-channel interference occurs when two access
points and their associated clients are transmitting on the same channel, and each cell is in close enough physical
proximity that each is capable of receiving the transmission of the other.
Because of the inherent nature of the 802.11 protocols, collision-avoidance and back-off mechanisms are used
to minimize the number of collisions that occur. In some cases, however, especially with heavier traffic loads on
same frequencies, these anti-collision mechanisms exact a price in the form of lost transmission opportunities.
This penalty is most often seen in a reduction in the amount of performance recognized per added access point.
Co-channel Interference in 802.11bg networks
Networks should be designed to avoid co-channel interference whenever possible. It is important to note that
there are technically 11 or more channels in the 802.11b/g spectrum and that only 3 of those channels are nonoverlapping. For this reason, most networks are designed to use an arrangement of Channel 1, Channel 6, and
Channel11 in order to minimize co- channel interference.
Co-channel Interference in 802.11a networks
Using the 5 GHz band gives 802.11a a significant advantage regarding co-channel interference. 802.11a operates
in the 5GHz frequency bands with 19 or more separate non-overlapping channels. As a result, you can have 19
or more access points set to different channels in the same area without them interfering with each other. This
makes access point channel assignment much easier and significantly increases the throughput that the Wireless
LAN can deliver within a given area. In addition, RF interference is much less likely because of the less-crowded
5 GHz band.
Co-channel Interference in 802.11n networks
Of the many features available in the 802.11n standard, only channel bonding (using 40MHz channels) will have
a direct impact on co-channel interference.
2.4GHz Band
Only 1 non-overlapping 40MHz channel is available in the 2.4 GHz band. It is for this reason that 40MHz channels
should not be used in the 2.4GHz band. Also, channel bonding in the 2.4GHz band is not supported by the Wi-Fi
organization.
5GHz Band
The amount of available non-overlapping channels in the 5GHz band will be reduced when using 40MHz channels
but up to 9 bonded channels can still be used in a channel design.
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Co-channel Interference in 802.11ac networks
Of the many features available in the 802.11ac standard, only channel bonding (using 40MHz or 80MHz channels)
will have a direct impact on co-channel interference.
5GHz Band
The amount of available non-overlapping channels in the 5GHz band will be reduced when using 40MHz channels
but up to 9 bonded channels can still be used in a channel design. It is recommended to never use 80MHz
channels in an enterprise environment.
Co-channel Interference in a Controller Based Wireless Network
Vendor B Adaptive Radio Management (ARM) will continuously analyze the existing RF environments, and
automatically adjust the access points’ power and channel configurations in order to mitigate co-channel
interference, signal coverage problems, and so forth.
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Spectrum Analysis (Non Wi-Fi Interference)
Most wireless networks and devices today use radio frequency (RF) technology to transmit data and certain types
of devices use different sections or "bands" for transmission. Wi-Fi equipment has been allocated by international
governing bodies to use certain unlicensed sections of the RF spectrum - specifically at 2.4 and at 5 GHz - for its
operation. Being unlicensed, these bands are shared between many, many different kinds of devices and are the
only section of spectrum where they are legally allowed to transmit RF signals. In environments like offices,
warehouses or high-tech residences, where several wireless devices vie for the same spectrum space to
communicate, interference can occur and networks become slow, drop connection or crash.
Why spectrum analysis? Since RF signals are invisible to the naked eye, a spectrum analyzer (like Wi-Spy) is
necessary to see into the wireless landscape to observe what is transmitting and where in the spectrum the
"noise" is occurring. Sometimes the solution is to change the channel of the Wi-Fi network to avoid the other
signals, and sometimes eliminating the offending wireless devices that "don't play well with others" is the answer.
Occasionally, in situations where interference cannot be avoided or eliminated, the only solution is to switch WiFi bands completely. Without spectrum analysis, implementing the proper solution is an expensive and timeconsuming game of trial and error.
Non-WIFI Interference Sources
Microwave Ovens
Microwave ovens leak energy at 2.4GHz. There are three types of ovens: single magnetron dual-magnetron, wave
rectified. Although they are shielded, the amount of energy that is leaked can often be enough to impact Wi-Fi
signals at distances of up to 30 meters.
Microwave ovens only cause interference when on. It is highly likely that many microwave ovens went undetected
during the timestamp of the survey.
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Car alarm systems
Some types of car alarm systems operate in the 2.4GHz band and could leak energy outside the car what could
have an impact on the Wi-Fi signals in the direct neighborhood of that car.
This type of interference can only be detected when an interfering alarm is present. It is possible that additional
interference near parking areas may arise when vehicles with interfering alarm systems are nearby.
Bluetooth Devices
Bluetooth provides relatively low data rates for supporting short-range, wireless personal area network
applications.
The deployment of both Bluetooth and 802.11bg networks in the same area is a bit risky, though, because of the
potential for interference.
Similar to 802.11bg, Bluetooth devices operate within the 2.4 GHz band. The difference is that that Bluetooth
uses frequency hopping spread spectrum (FHSS) (at 1,600 hops per second) to hop over the entire 2.4 GHz band.
802.11bg, on the other hand, uses direct sequence spread spectrum (DSSS) and only occupies approximately one
third of the 2.4 GHz band. As a result, Bluetooth hops all over 802.11bg transmissions.
An 802.11bg station (client or access point) is polite and first listens to the medium before transmitting. If the
802.11bg station doesn't sense RF energy above a certain threshold (meaning that the medium is idle), the
802.11bg station can transmit a frame. While the 802.11bg station is sending the frame, other 802.11bg stations
will hold off their transmissions by following the same protocol. This provides a fairly good method of sharing a
common RF channel among devices complying with the 802.11bg standard.
A critical problem is that Bluetooth and 802.11bg neither understand each other nor follow the same rules. A
Bluetooth radio may haphazardly begin transmitting data while an 802.11bg station is sending a frame. This
results in a collision, which forces the 802.11 station to retransmit the frame when it realizes that the receiving
station is not going to send back an acknowledgement. This lack of coordination is the basis for RF interference
between Bluetooth and 802.11bg networks.
Recommendations for Minimizing Interference from Bluetooth:



Manage the use of RF devices. One way to reduce the potential for interference is to regulate the
types of RF devices within your facility. In other words, establish a company policy for managing
unlicensed RF devices. The extreme measure would be to completely ban the use of Bluetooth;
however, that is not practical or even possible in all cases, you could set company policies to limit the
use of Bluetooth to only specific applications, such as syncing PDAs to desktops.
Ensure adequate 802.11bg coverage. Strong, healthy 802.11bg signals throughout the coverage areas
helps to reduce the impact of the Bluetooth signals. If wireless LAN transmissions become too weak,
then the interfering Bluetooth signals will be more troublesome.
Move to the 5 GHz band. If none of the above steps solve the problem, then consider using the
802.11a standard (5 GHz band NICs and access points).
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Analysis Explanation
During the survey, a spectrum analysis sweep is performed throughout the coverage areas. The surveyor will keep
an eye on several plots and charts to detect non Wi-Fi interference sources that could have an impact on the
Wireless LAN.
This task is more difficult in the 2.4GHz band than in the 5GHz band because the 2.4GHz band is generally more
polluted than the 5GHz band (high variety of 2.4GHz devices).
In the 2,4GHz band, the sweep starts at 2,400GHz and ends at 2,500GHz (channels 1,2,3,4,5,6,7,8,9,10,11,12,13,14).
In the 5GHz band, the UNII lower/middle band, the sweep starts at 5,150GHz and ends at 5,350GHz (channels 36,
40, 44, 48, 52, 56, 60, and 64)
In the 5GHz band, the UNII middle band, the sweep starts at 5,470GHz and ends at 5,725GHz (channels
100,104,108,112,116,120,124,128,132,136,140)
When non Wi-Fi interference is detected during the sweep, the affected area, interference description and the
location of the interference source (if possible) will be displayed in this section.
If no non-WIFI Interference is detected, “No Non-WIFI Interference Detected” will be displayed with an analysis
screenshot of the sweep.
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Singel 5 B-2550 Kontich
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Spectrum Sweep 2.4GHz (2.400GHz – 2.500GHz)
Density
The Density View displays how often a signal is detected at a specific amplitude. After a short time of gathering
data, patterns begin to emerge in the Density View. A density map view enables the user to quickly identify
packet-based and analog patterns that may be interfering with your network. This view emphasizes how constant
noise is across the spectrum. At any given point, Chanalyzer assigns a color based on how much of the energy in
a range of time is above that point. If 50% of all the activity is above an amplitude point, Chanalyzer colors it
red. This display option is especially useful in understanding just how constant interference is within a given range
of time.


Average: The average display option (green peaks) represents the average of the received spectrum
activity in the selected time span. For example, if the time span is 1 minute, the average will be
calculated in the rolling 1 minute.
Max: The maximum display option (red peaks) represents the maximum values received from the
Wi-Spy across the band in the selected time span.
Note*: Non Wi-Fi interference was detected in the 2.4GHz band during the timestamp of the WLAN site survey.
This was caused by motion detection devices installed in the smallest warehouse. As the site survey is 5GHz
based, this isn’t an issue.
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Singel 5 B-2550 Kontich
fax: +32 3 457 98 00 tel : +32 3 457 96 00 e-mail: [email protected]
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Spectrum Sweep 5GHz (5.150GHz – 5.725GHz)
Density
The Density View displays how often a signal is detected at a specific amplitude. After a short time of gathering
data, patterns begin to emerge in the Density View. A density map view enables the user to quickly identify
packet-based and analog patterns that may be interfering with your network. This view emphasizes how constant
noise is across the spectrum. At any given point, Chanalyzer assigns a color based on how much of the energy in
a range of time is above that point. If 50% of all the activity is above an amplitude point, Chanalyzer colors it
red. This display option is especially useful in understanding just how constant interference is within a given range
of time.


Average: The average display option (green peaks) represents the average of the received spectrum
activity in the selected time span. For example, if the time span is 1 minute, the average will be
calculated in the rolling 1 minute.
Max: The maximum display option (red peaks) represents the maximum values received from the
Wi-Spy across the band in the selected time span.
Note*: No non Wi-Fi interference was detected in the 5GHz band in any of the coverage areas during the
timestamp of the WLAN site survey.
TechAccess – Blue Vision
Singel 5 B-2550 Kontich
fax: +32 3 457 98 00 tel : +32 3 457 96 00 e-mail: [email protected]
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Installation Report
Power Options
Vendor B Access Point Z access points receive power through the Ethernet cable or the external power adapter.
The figure below shows the power options for the access point.
Access Point Power Options
Power Consumption:




Maximum power consumption: 12.5W (POE)
Maximum power consumption: 11.7W (DC)
Maximum power consumption in idle mode: 8.4W (POE)
Maximum power consumption in idle mode: 7.7W (DC)
The access point supports the following power sources:





Power Adapter, AC/DC wall plug, 100-240Vac 50/60Hz to 12VDC 1.5A
An IEEE 802.3af or 802.3at compliant Power over Ethernet (PoE) switch
An IEEE 802.3af or 802.3at compliant Power over Ethernet (PoE) injector
Midspan supporting the IEEE 802.3af or 802.3at (PoE) standard
Direct DC source: 12 Vdc nominal, +/- 5%
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Ground Plans with Access Point Layout
The access points needed for the main coverage areas are marked in green.
Main coverage area
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Photos & Mounting Instructions
AP_01
AP Type
Vendor B Access Point Z
Antenna(s) Type
Integrated (omnidirectional)
Mounting Equipment
Mounting kit (Mounting kit A)
Antenna Orientation
Horizontally mounted facing down
Remarks
The Access Point should be installed facing down using the
mounting kit against the lighting rail
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