This lab will introduce you to wireless spectrum analysis and supports this week’s TCO.
TCO 7: Given a situation requiring a wireless network solution, propose an appropriate design for a wireless network using radio frequency based methods.
Wireless signals are invisible to the human eye. To see these signals, a tool such as a spectrum analyzer is required. In this lab, you will learn how to use a common spectrum analyzer, as you would in your career, to locate potential interference while designing a wireless local area network.
1. Review the Tutorial: Using a Spectrum Analyzer located in Appendix A.
2. Download ...view middle of the document...
Question 3: What channels are being used?
Question 4: What channel is being used the most?
6. Close Capture2.wsr and open Capture3.wsr. Let the recording run for a few minutes. Using this capture, answer the following questions in your lab report.
Question 5: What type of signal is being shown?
Question 6: What frequency, not channel, is being used?
7. Close Capture3.wsr and open Capture4.wsr. Let the recording run for a few minutes. Using this capture, answer the following questions in your lab report.
Question 7: What type of signal is being shown?
Question 8: How strong is this signal in dBms?
8. Exit the Chanalyzer. The lab is complete.
Tutorial: Using a Spectrum Analyzer
In this lab, we will examine how to use a USB-based spectrum analyzer. The device used will be the W-Spy USB spectrum analyzer from Metageek at www.metageek.net.
This device looks like this:
To display what is captured by this device, Metageek provides the Chanalyzer program. Interface is shown below.
The moving line at the bottom shows how long the data has been captured. In this case, it was for 29 seconds.
The top window is the Spectral view and is shown below. The color bar at the top shows the signal strength. The number on the left is the weakest. The number on the right is the strongest. The colors in this view represent the signal strength. Vertical stripes in the Spectral view indicate a steady signal. The color of the stripes shows how strong the signal is. In this case, it shows...