A new, major release of VisiWave Site Survey is available right now to assist you in building and maintaining your wireless networks. VisiWave has always been a powerful, yet simple, WiFi site survey tool. Now it's even more powerful, but still straightforward to use.
A "Pro" version of VisiWave Site Survey was added with the v5.0.8 release. For those that have a Pro license, you now have the ability to perform WiFi predictive surveys as well as traditional site surveys. Predictive surveys use a model of the survey area that you create to predict what WiFi coverage will be. You describe the building's structures and access points and VisiWave Pro uses a mathematical model to predict the resulting real world coverage.
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Embed yourself inside your building or city-wide site survey results. Instead of viewing static, flat survey results, use VisiWave along with Google Earth to interactively visualize your wireless coverage as 3D models overlaid on the earth's surface. Reveal patterns and details of your Wi-Fi network that simply can't be seen in a PDF report:
VisiWave Site Survey é um profissional de LAN wireless site survey aplicativo que ajuda você a coletar e visualizar os dados, bem como criar uma rede sem fio relatório. O processo de colecção de site de levantamento de dados é realizado através de um padrão adaptador sem fio.
5 Chapter 1.0 Getting Started Welcome to VisiWave Site Survey: an advanced site survey tool that provides data collection and visualization capabilities not found in any other existing product. The VisiWave Site Survey product provides quick and flexible data collection combined with high-powered data visualization and reporting capabilities to create a complete wireless LAN site surveying solution. Collection of the site survey data is performed using a Windows laptop PC and a standard wireless adapter. You tell the application where you are by clicking on a survey map that is displayed on the screen or using a GPS device to track your location. Once data is collected, easily switch to the integrated reporting view to analyze the survey data and create visual reports of your wireless coverage. The guide begins by going over some basic site surveying techniques. It then describes collecting site survey data using VisiWave. The guide then finishes up by discussing how to analyze your coverage and create reports. 1.1 Product Components Data is collected during a site survey using a Windows laptop PC and a supported wireless network adapter. This is all that is required to collect data using VisiWave Site Survey. Optionally, a spectrum analyzer can be used to record interference sources in the 2.4GHz or 5GHz spectrum Wireless Network Adapter A wireless network adapter can come in many different form-factors. Typically, modern laptops come with integrated wireless support. If not, you can normally add wireless support using either a USB wireless device or a PC Card. Any of these formats are potentially compatible with VisiWave Site Survey. To view a current list of supported wireless network adapters, please visit VisiWave's website at To determine if your wireless adapter is supported, you can download a free utility off of VisiWave's website called VisiWave CheckAdapter. The utility quickly and easily tests your adapter to see if it supports all the features required by VisiWave. The utility also rates your adapter based on how suitable it is for performing effective site surveys. You need to make sure the wireless adapter is fully functional on your computer before testing it with VisiWave CheckAdapter. Wireless Adapters In general, it is best to use a client wireless device that is similar to what will actually be used in production. This is because the power, antenna, features, and internal firmware can heavily 1
6 influence a client's wireless experience. To best test the wireless capabilities of a space, you should try to use the same equipment that will be used in production. Before using the wireless adapter, make sure you have the latest device drivers and software for the adapter and make sure the adapter is working properly outside of VisiWave Site Survey. Integrated Wireless Adapters Some computers come with wireless adapters built into the computer. These are often the most convenient adapters because they are well supported, they don't need to be separately attached to the computer, and they make efficient use of the computer's battery. Also, many companies standardize on a particular laptop with integrated wireless support so using the same integrated adapter for a site survey will probably provide you with the best survey results. USB or PCI Express Wireless Adapters External wireless adapters such as USB or PCI Express wireless adapters are also options. If the client devices in a location being surveyed generally use external wireless adapters or if you need a feature not supported by your integrated adapter (such as an external antenna port or support for n), then this might be the best choice for performing the site survey Wi-Spy Spectrum Analyzer VisiWave Site Survey supports the Wi-Spy Spectrum Analyzer, a separate product from MetaGeek, LLC ( The Wi-Spy is a USB 1.1 device. It continuously monitors either the 2.4GHz or 5GHz radio spectrum reporting on any radio transmissions or interference sources that occur in this range. VisiWave records this information and associates it with a location on your survey map image. You can then create detailed interference graphs to go along with your wireless coverage maps. The Wi-Spy device is also used while collecting Wi-Fi survey data. If you want to accurately graph the signal-to-noise ratio, you should plug in your Wi-Spy device while collecting Wi-Fi data. VisiWave will then automatically query the Wi-Spy device to get accurate noise levels at each survey location. The Wi-Spy device is completely optional. It is only needed if you want to record RF spectrum data. Even with the Wi-Spy device, normal Wi-Fi wireless characteristics are collected using a separate, standard Wi-Fi wireless adapter. You can collect both spectrum data and normal wireless network data at the same time, but it is recommended that you only collect one of these at a time. Having an actively transmitting wireless radio on your laptop may cause strongly biased interference to show up in your spectrum data if you collect them both at the same time. 2
7 The Wi-Spy Spectrum Analyzer works by sampling all 1MHz frequency increments within the a/b/g/n frequency range. Depending on which Wi-Spy device you have, you can record either just the 2.4GHz range or both the 2.4GHz and 5GHz ranges. The 2.4GHz range starts at 2.400GHz and goes up to 2.483GHz. This exceeds the usable range in some countries (for example, the United States only uses up through 2.473GHz), but it covers the entire technical range of the standards. Similarly, the 5GHz range starts at 5.160GHz and goes up to 5.835GHz with some frequencies not included in that range. The spectrum analyzer briefly listens on each frequency and notes the strength of the current radio interference on that frequency. VisiWave collects each of these interference levels and associates them with the location on the map where they occurred. When analyzing the spectrum data, you can create coverage maps that show the peak and average interference levels for your entire survey area. 1.2 System Requirements VisiWave Site Survey Data Collection Application The data collection application requires the following minimum components: Required Windows XP/Vista/7 You will need a laptop PC running Microsoft Windows XP/Vista/7 that is portable enough to be carried while performing a site survey. Under Windows XP, you will need to have administrator privileges in order to have access to the wireless adapter. Supported Wireless Adapter A supported PC Card, USB, PCI Express, Secure Digital, Compact Flash, or integrated wireless network adapter is required. A free utility called VisiWave CheckAdapter is available for download from This utility tests your wireless adapter to see if it is supported. A partial list of supported adapters can be found on our website. In some cases, the latest drivers from the adapter manufacturer may be required. Optional Wi-Spy Spectrum Analyzer You can optionally record radio transmissions and interference sources using this USB 1.1 spectrum analyzer device. No extra drivers or software are needed. 3
8 Google Earth Viewer To view Google Earth files exported by VisiWave, you will need the Google Earth viewer application. You can download this for free from Click on the large "Download" button and follow the instructions. After installation, Google Earth files are automatically associated with the viewer so you can just double click on them. You can also purchase the Google Earth Plus viewer or the Google Earth Pro viewer. The for-purchase versions are not required, but are supported. Portable Document File (PDF) viewer such as Acrobat Viewing the user's guide requires a PDF viewer application such as Adobe's Acrobat Reader. Also, site survey reports generated in the PDF format require a viewer to be viewed. You can optionally generate reports in HTML format which do not require this viewer. To download Adobe Acrobat Reader, visit Adobe's Web site at: 4
9 Chapter 2.0 Performing a Site Survey 2.1 How Long Will it Take? The amount of time it takes to survey an area is highly dependent on what type of space you are surveying. An area divided into many offices or cubicles will take much longer than an area that is the same size, but organized as a warehouse. And the more detailed you are in collecting the data, the longer the survey will take. With this in mind, someone experienced with using VisiWave Site Survey should be able to complete a thorough survey of a 25,000 square foot office building in one to two hours. This includes some setup time, time to connect to the network, and the time to collect the survey data. This does not include time spent analyzing the data and producing a site survey report. 2.2 Site Surveying Tips Be prepared to answer a lot of questions from employees about what you are doing. While performing a wireless site survey in an office building, factory, warehouse, campus, or hospital, you will inevitably get a lot of stares and questions. Many times the people that inhabit these spaces aren t even aware they have a wireless network. Politely answer their questions, ask their permission to enter their offices to, take a few quick measurements of your wireless network coverage. Before you begin doing the survey, suggest that a general announcement is made to all employees in the survey area telling them to expect someone walking the halls and entering all rooms and offices taking measurements for a wireless network site survey. This simple or voice mail message will ease your way through the building and save you time. Wear comfortable shoes and take several short breaks. Doing a site survey on a 25,000 square foot facility can cause you to walk more than two miles. In a large facility over the course of a complete day, you might walk 10 miles or more. Be prepared to recharge your laptop computer when doing large site surveys. Depending on the laptop model you are using, you may need to either recharge your computer s batteries or swap in fresh batteries during the middle of the site survey. If you are doing a site survey at a customer s site, many companies will want to escort you through the facility. This is usually done for a couple reasons. One is for security reasons. Having an escort along allows you to gain access to areas you might not normally be able to enter and prevents you from having to justify your presence to security personnel or other employees. The other main reason is to be there to assist you 5
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