Channel Metrics Trend

By default, this line chart shows the current relative quality of selected channels in the 2.4GHzGigahertz.or 5GHzGigahertz.radiobandsBand refers to a specified range of frequencies of electromagnetic radiation.over a period of time. The Channel Metrics Trend chart can also be configured to display trends for the current availability of selected channels,或的百分比availability for those channels. Spectrum monitors can display data for up to five different channels. Hybrid APs display data for their one monitored channel only.

For more information on how the spectrum analysis feature determines the quality of a channel, seeChannel Metrics.

When you hover your mouse over any line in the chart, a tooltip displays channel quality or availability data for that individual channel at the selected time.

Click the down arrow in the upper right corner of this chart then click theOptionsmenu to access these configuration settings. Once you have configured the desired parameters, clickOKat the bottom of theOptionsmenu to save your settings and return to the spectrum dashboard.

Table 1:Channel Metrics Trend Options

Parameter	Description
BandBand refers to a specified range of frequencies of electromagnetic radiation.	Radio band displayed in this graph (2.4 GHz or 5 GHz).
Show Trend for Last	The Channel Quality Trend chart shows channel quality or channel availability for the past 10 minutes by default. To view data for a different time range, click theShow Trend for Lastdrop-down list and select one of the following options: 10 minutes 30 minutes 1 hour
Channel numbering	This parameter is not configurable for graphs created by hybrid APs or spectrum monitor radios that use the 2.4GHzGigahertz.radiobandBand refers to a specified range of frequencies of electromagnetic radiation.. A hybrid AP on a 20MHzMegahertzchannel sees 40MHzMegahertzWi-FiWi-Fi is a technology that allows electronic devices to connect to a WLAN network, mainly using the 2.4 GHz and 5 GHz radio bands. Wi-Fi can apply to products that use any 802.11 standard.data as non-Wi-FiWi-Fi is a technology that allows electronic devices to connect to a WLAN network, mainly using the 2.4 GHz and 5 GHz radio bands. Wi-Fi can apply to products that use any 802.11 standard.data. For spectrum monitors using the 5GHzGigahertz.radiobandBand refers to a specified range of frequencies of electromagnetic radiation., click theChannel Numberingdrop-down list and select either20 MHzor40 MHzchannel numbering to identify a channel numbering scheme for the graph. Graphs for AP radios that support 802.11AC include an additional80 MHzoption for very-high-throughput channels.
Show Lines for These Channels	The Channel Quality Trend chart for a spectrum monitor can display channel quality, channel availability, or channel utilization values for up to five different channels on the selected radiobandBand refers to a specified range of frequencies of electromagnetic radiation.. Charts for hybrid APs can display data for the one channel monitored by that hybrid AP radio. To choose which type of data each line should represent on a chart for a spectrum monitor, click thechannel numberdrop-down list and select a channel within the radiobandBand refers to a specified range of frequencies of electromagnetic radiation., then click the second drop-down list and select eitherChannel Quality, orChannel Availability. Select the check box beside each channel entry to show that information on the chart, or deselect the check box to hide that information.