Site Survey Tool - TamoGraph

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System Requirements
Driver Installation
Licensing and Trial Version Limitations
Interface Overview
Access Point List
Floor Plan / Site Map
Plans and Surveys, Properties, and Options Panel
Main Menu
Performing a Site Survey
New Project Wizard
Data Collection
Understanding Survey Types: Passive, Active, and Predictive
Active Survey Configuration
Best Practices, Tips, and Tricks
Survey Job Splitting
Predictive Surveys
Drawing Walls and Other Obstructions
Drawing Attenuation Zones
Placing and Configuring Virtual APs
Working with Presets
Applying Visualizations
Working with Multi-floor Sites
Mixing Real and Virtual Data
Best Practices, Tips, and Tricks
Analyzing Data – Passive and Predictive Surveys
Selecting Data for Analysis
Adjusting AP Locations After Passive Surveys
Splitting an AP into Multiple Unique APs
Working with Multi-SSID APs
Visualization Types
Signal Level
Signal-to-Noise Ratio
Signal-to-Interference Ratio
AP Coverage Areas
Number of APs
Expected PHY Rate
Frame Format
Channel Bandwidth
Channel Map
Analyzing Data – Active Surveys
Selecting Data for Analysis
Visualization Types
Actual PHY Rate
TCP Upstream and Downstream Rate
UDP Upstream and Downstream Rate
UDP Upstream and Downstream Loss
Round-trip Time
Associated AP
Spectrum Analysis
Hardware Requirements
Spectrum Data Graphs
Performing Spectrum Analysis Surveys
Viewing Collected Spectrum Data
Exporting Spectrum Data
Reporting and Printing
Customizing Reports
Google Earth Integration
Configuring TamoGraph
Plans and Surveys
Plan / Map
Client Capabilities
Colors and Value Ranges
AP Detection and Placement
Visualization Settings
Configuring GPS Receiver
Using GPS Configuration Dialog
Finding the GPS Receiver Port Number
Taking Photographs
Voice Control
Using TamoGraph in a Virtual Machine
Frequently Asked Questions
Sales and Support

Predictive Surveys

IMPORTANT: Predictive Surveys are available to Pro License users only.

In addition to the surveys based on actual on-site measurements, TamoGraph can be used for planning WLANs that have not been deployed yet. This type of survey is called “predictive” or “virtual,” because Wi-Fi characteristics are predicted for the virtual environment model created by the user. The process of creating and adjusting the virtual environment, selection and placement of simulated APs, and analysis of the resulting WLAN is commonly referred to as “RF planning.”

To perform a predictive site survey, you need to:

· Create a new project with the help of the Project Wizard.
· Calibrate the floor plan or site map.
· Configure the survey options and WLAN requirements.
· Create a model of the environment. This includes placing walls and other obstructions on the floor plan, as well as placing APs and editing their properties.

To create a virtual model of the environment, the user needs to “tell” the application about the position, size, and type of the physical objects that affect radio wave propagation. Typically, walls and other obstructions, such elevator shafts, are already shown on floor plans; however, these are merely lines and dots that are meaningless to the application. The user has to draw such physical objects on top of the floor plan and define their characteristics.


To start creating a virtual model, press the Show/hide virtual objects toolbar button on the tool bar. This will show an additional tool bar with a few drawing tools. It is recommended to begin by drawing walls. Once the walls have been drawn, you can place APs on the floor plan, decide how many APs you need to provide adequate coverage, select the best positions for the APs, and configure their parameters (channel numbers, rates, antennas, etc.)

Once you have completed this process, you can analyze data as you normally do after a passive survey. If you are a novice in WLAN design, we also suggest that you read about Best Practices, Tips, and Tricks at the end of this chapter.

IMPORTANT: You must always verify that your WLAN design works as expected by conducting a real survey after deploying your WLAN. Predictive surveys cannot take into consideration all the factors that might affect real-world WLAN performance and therefore cannot fully substitute on-site surveys.