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4 Messages

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124 Points

Mon, Apr 27, 2015 11:28 PM

reading the spectrum analysis

Not familiar with the spectrum analysis, looking for information on what it is telling me. 

Responses

102 Messages

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1.3K Points

6 years ago

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 

4 Messages

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124 Points

5 years ago

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

102 Messages

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1.3K Points

5 years ago

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)

4 Messages

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124 Points

5 years ago

Great this has been helpful, Thanks.

Champion

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556 Messages

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10.5K Points

5 years ago

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.