reading the spectrum analysis

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  • Updated 2 years ago
Not familiar with the spectrum analysis, looking for information on what it is telling me. 
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jbrown

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Posted 2 years ago

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Munish Dhiman, Employee

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hi Jbrown,


In general 

Spectrum analysis provide  in depth radio frequency interference analysis and the signal level view of the RF medium . It  visualize  the RF activity on 2.4ghz and 5ghz including Noise and interference sources. 

It also provides the signal-level data and the impact of non-wifi device interference. spectrum analyzer is  to capture a representation of the signal energy (quality of the signal, signal strength, reflections, noise and interference)in graphic format

Let me know if you have a product specific query on spectrum analysis. 

Thanks 
Munish 
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jbrown

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Here are 2 APs that are fairly close together and this was from production hours. 

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Munish Dhiman, Employee

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Hi Jbrown,

It is showing the view of received signal power across the band and the color coded using signal power (-110 to -20dbm). Week signal is the blue ==> Red .

It also shows that Cumulative Distribution of received power across the band . <20% blue ==> 80% Week signal (Red)
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jbrown

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Great this has been helpful, Thanks.
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John D, AlphaDog

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The cumulative view tends to be more useful than the instantaneous view.

From my look at your cumulative view, it looks like you've got a lot of nearby 2.4GHz activity in the channel 1 and channel 8 ish region, while the area right below channel 6 tends to be least used.

The graph shows a heat map of what receive strengths are most often perceived at each frequency. A Ruckus AP generally has a noise floor on the order of -95 dbm or lower (e.g. more negative), so if you powered up your Ruckus in a completely clean environment you'd expect to see one big red line at -100 or so.