What is Spectrum Analysis?

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Spectrum Analysis is a tool to identify signal energy present on the spectrums used to provide wireless access. It is used to provide information about signal quality, noise, and interference from both Wi-Fi and non-802.11 interference sources, such as bluetooth and microwaves.

Aerohive Spectrum Analysis is:

  • Delivered as a free software update to existing 802.11n customers, with support for full 2.4 GHz and 5 GHz spectrum analysis, time slicing access with scanning, and common signatures to identify interfering device type, such as microwaves.

  • Delivered as an HTML5 spectrograph (graphical representation of spectrum analysis), allowing it to be used with any device or browser including iPads and iPhones.

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FAQ poster, Official Rep

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Posted 6 years ago

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Haydn St

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Is this available within the HMOL? I have been looking to utilize this tool as per instruction from a industry partner.
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Brian Ambler

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Hello Haydn,

Yes, this feature is available on both HMOL and on-premise HiveManager deployments. Simply tick the checkbox for the device which you wish to begin to use spectrum analysis, then go to "Utilities > Spectrum Analysis"


From the help system:
Spectrum Analysis (Spectrum analysis is available on all wireless-capable devices except the AP320, AP340, and BR100.) Aerohive devices have the ability to perform spectrum analysis in both the 2.4 GHz and 5 GHz band. Spectrum analysis provides a live view of the RF environment so that you can plan for further WLAN deployment or troubleshoot WLAN issues such as high retransmission rates caused by device interference or slow connections due to over utilization.

There are two main spectrum analysis functions: the graphical rendering of the RF environment in an FFT trace and swept spectrogram, and the identification of interference devices such as cordless phones and microwave ovens.

The number of devices that can perform a spectral scan concurrently varies depending on the HiveManager platform you use. HiveManager Virtual Appliance limits the number of concurrent scans to two (that is, only two APs can perform spectrum analysis functions as the same time), the physicalHiveManager appliance allows for 10 concurrent scans, and HiveManager Online permits up to 20 concurrent scans.

To start the spectrum analyzer feature:

  1. Click Monitor > Access Points > All Devices, select the device on which you want to start the spectrum analyzer feature, and then clickUtilities > Spectrum Analysis.
A message appears with a warning that performing spectrum analysis on the selected AP will affect performance and a prompt for you to confirm your decision.

  1. If you want to continue, click Yes.
HiveManager immediately initiates the analysis tool on the selected AP and displays the analysis pane, which contains three main areas: a status bar at the top of the pane, an area containing the graphical analysis feedback, and an interference reporting area at the bottom of the pane.

  • To use the spectrum analysis feature, you must have at least one SSID configured on your WLAN on at least one AP running HiveOS4.0r1 or later
Full details on how to use and interpret the output can be found in the help system here under the "Spectrum Analysis" header.

Hope this helps
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Crowdie, Champ

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Do we have an update on when the "Spectrum Analysis not working when WIPS is enabled" issue will be resolved?
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Brian Ambler

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Hi Crowdie,

Yes, the issue you refer to is marked as resolved in the upcoming 6.1r6 release.
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Crowdie, Champ

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Thanks for that update Brian.  Are we still on course for 6.1r6 being available this month?
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Brian Ambler

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Not a problem Crowdie. The plan as of today is to still release 6.1r6 inside this month, though I didn't put in the obligatory weasel words of "that is always subject to change" the powers that be would be displeased :)