774| Spectrum Analysis AOS-W 6.5.3.x| User Guide
Parameter Description
Band Radio band displayed in this graph.
For spectrum monitor radios using the 5 GHz radio band, click the Band drop-down list and
select 5 GHz upper, 5 GHz middle or 5 Ghz lower to display data for that portion of the
5Ghz radio band. This parameter is not configurable for graphs created by hybrid APs or
spectrum monitor radios that use the 2.4 GHz radio band.
Channel
Numbering
This parameter is not configurable for graphs created by hybrid APs or spectrum monitor
radios that use the 2.4 GHz radio band. A hybrid AP on a 20 MHz channel sees 40 MHz Wi-Fi
data as non-Wi-Fi data. For spectrum monitors using the 5 GHz radio band, click the Channel
Numbering drop-down list and select either 20 MHz or 40 MHz channel numbering to
identify a channel numbering scheme for the graph. Graphs for AP radios that support
802.11ac include an additional 80 MHz option for very-high-throughput channels.
Channel
Range
For graphs created by spectrum monitors, specify a channel range to determine which
channels appear in this graph. Click the first drop-down list to select the lowest channel in the
range, then click the second drop-down list to select the highest channel to appear in the
graph.
This graph displays all channels within the spectrum monitor’s radio band by default.
NOTE: This parameter is not configurable for graphs created by hybrid APs.
Show This graph can display values for up to five different device types on different channels for a
spectrum monitor, or a single device type for a hybrid AP monitoring a single channel.
To choose which type of data each line should represent, click the channel number drop-
down list and select a channel within the radio band, then click the device type drop-down list
and select one of the following device types
n WiFi (AP)
n Microwave (This option is only available for 2.4 GHz radios)
n Bluetooth (This option is only available for 2.4 GHz radios)
n Fixed Freq (Others)
n Fixed Freq (Cordless Phones)
n Fixed Freq (Video)
n Fixed Freq (Audio)
n Freq Hopper (Others)
n Freq Hopper (Cordless Network)
n Freq Hopper (Cordless Base)
n Freq Hopper Xbox (This option is only available for 2.4 GHz radios)
n Microwave (Inverter) (This option is only available for 2.4 GHz radios)
n Generic Interferer
NOTE: For more information on non-Wi-Fi device types detected by a spectrum monitor, see
Working with Non-Wi-Fi Interferers on page 787.
Table 170: Device Duty Cycle Options
Channel Utilization Trend
The Channel Utilization Trend chart is a line chart that shows the percentage of total utilization on each channel
over a time interval. The channel utilization includes the utilization due to Wi-Fi as well as utilization due to non-
Wi-Fi interferers and Adjacent Channel Interference (ACI).
For additional information on how the spectrum analysis feature measures ACI, see Channel Metrics on page 768.
This graph can show data recorded for the last ten, thirty, or sixty minutes. Spectrum monitors display
spectrum analysis data seen on all channels in the selected band, and hybrid APs display data from the one
channel they are monitoring. When you hover your mouse over any line in the chart, a tooltip shows the
percentage of the channel being utilized at the specified time. The example in Figure 127 shows that channel 1
was 70% used at the selected time in the chart.
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