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

Working with Multi-floor Sites

When a WLAN for a multi-floor building is being designed, the virtual model must take into consideration signal “leak” from the adjacent floors. This is important for two reasons. First, it is a common practice to provide connectivity to the adjacent floor by means of the APs that are deployed one floor below or above (usually below, because APs are typically placed on the ceiling, and, therefore, are closer to the floor located above.) Second, if providing connectivity by this method is not planned, it is important to make sure that the signal that penetrates the floors does not cause interference. With TamoGraph, you can create and analyze multi-floor models as explained below.

Creating a Multi-floor Project

To create a multi-floor project, you should first follow the steps that you follow when you create a standard project; you must add a floor plan to the project and calibrate it. You can begin with the first floor. Once the standard project with a single floor plan has been created, you can use the Plans and Surveys tab on the right panel to manage floors and define their characteristics. Click Add => Floor to create a new floor level and then drag your first floor plan to the newly created floor item. After that you can click Add => Floor again to create a new floor level. If the floor plans are identical for all the floors in your model, you can duplicate floors after drawing walls and other obstructions on the first floor plan and placing alignment points; this is described in detail below. If the floors are not identical, you should add individual floor plans images in one of the supported graphic formats for every floor by selecting the corresponding floor and using the Add => Plan… command. New floor plans must then be calibrated. Note that for each floor, you can add multiple floor plans that might have different scale and orientation.

Once the floors have been created and the corresponding floor plans have been added and calibrated, you should specify floor heights and a few other characteristics. New floors are added with default floor materials and heights; to specify correct values for your building, right-click on any of the floor items and select Properties or click on the Floor Manager button. You can also use this dialog to rearrange floors.

When the floor properties have been defined, you should take care of floor plan alignment as explained below.

Aligning Floors

When you work with a multi-floor site model, TamoGraph can analyze Wi-Fi signals that come from the adjacent floors. To be able to take advantage of this functionality, you need to perform floor alignment. Floor plan alignment is necessary because floor plans might have different scale, orientation, or offset. While floor alignment is not mandatory, TamoGraph will use only the data from the current floor unless you perform floor alignment. To perform it, please do the following:

· Right-click on the first floor plan and select Align Floor Plan.
· Choose a few locations on the floor plan that will be easily identifiable on the plans of other floors. This could be elevator shaft corners, building corners, staircase corners, or anything else that you can easily find on all the floor plans that you use in the project.
· Click Add point to place a new marker on the floor plan, and then move the marker to one of these locations. Create at least two markers. Each marker is assigned a unique number. If you made a mistake, click Delete point or Clear all.
· Once you have placed two or more alignment markers, click Apply.
· Repeat this operation for all the floor plans that you would like to have aligned. The markers must be positioned exactly below or above the corresponding markers on the adjacent floor. For example, if marker #2 on the 5th floor is placed in the bottom right corner of the building, marker #2 must be also placed in the bottom right corner of the building on the floor plan of the 6th floor.

To check the current floor alignment status, select Properties or click on the Floor Manager button. The floors that are properly aligned are marked with a green checkbox. The floors that have not been aligned yet are marked with a yellow exclamation mark. Just like map calibration, floor alignment must be done only once.

Floor Duplication

If the floor plans are identical for some or all the floors in your model, you can simply right-click on the first floor and select Duplicate Floor to create a copy of the first floor with exactly the same floor plan. If the walls and other obstructions, their placement, and materials are identical for all floors, you can calibrate a single floor plan, draw walls, perform floor alignment as described above, and then use the Duplicate Floor command; that way, you will not need to recreate the same virtual floor model for every floor or align the floors, because duplication includes the walls and alignment points.

Analyzing Data

Data analysis for multi-floor sites is similar to data analysis methods for single-floor predictive surveys; they are described in the Applying Visualizations chapter. However, there are some peculiarities that should be noted. In addition to the signals from the APs located on the floor being analyzed, TamoGraph will also analyze the signals that penetrate from the APs located on the adjacent floors, taking into account their position, height above the floor, and the material of the ceilings. The APs located on the adjacent floors are displayed on the AP list (the left pane of the main TamoGraph window), but the names of such APs are shown using a pale blue font color. This allows you to identify the APs that do not belong to the current floor. Note that you cannot change the properties of such APs or delete them. If you want to change properties of an AP or delete it, first select the floor to which it belongs using the Plans and Surveys tab.