This tab displays per-channel statistics for all the channels that
have been or are being monitored. The number of channels shown in
this table depends on the way you use CommView for WiFi. Normally,
when you monitor only one channel used by your WLAN, the table will
solely contain data on the selected channel, because the radio used
in a wireless adapter can receive data on only one channel at a
time. Once you have selected a different channel for monitoring,
another channel will be added to the table. If you select
the Nodes tab,
the table will contain data on all the scanned channels for which
at least one packet has been captured.
Because the 802.11 standard uses overlapping channel frequencies in
the 2.4 GHz band, you might notice that even if your WLAN is
configured to use only one channel, e.g. 6, you will still see
non-zero values for the adjacent channels. Unlike 2.4 GHz channels,
5 GHz channels do not overlap.
On the bottom pane, you can see Packet
Types and Data
These tables display detailed statistics for the selected channel
based on the packet types and subtypes and on the data
On the left pane, you can see three
displays the signal level for the top ten nodes found on the
selected channel. The Packets/sec and Mbytes/sec charts
show the number of packets and Mbytes per second captured on the
selected channel. When working with information provided on these
charts, please note the following:
charts display data for the selected channel only.
charts are updated only when the application actually captures data
on the select channel. This means that if, for example, you are
capturing data on channel 2 and select channel 2 from the channel
list, the charts will be constantly updated. If you select channel
3, the charts will be "frozen." If you work In Scanner
select any channel, the charts will be updated every time the
application sweeps through the selected channel.
The meaning of the channels table columns is explained
channel frequency in MHz.
the total number of captured packets.
signal level in the min/average/max format. The average value is
calculated since the data in this table was last reset. Please
refer to the Understanding Signal
for more information.
noise level in the min/average/max format. The average value is
calculated since the data in this table was last reset. Noise
information may not be available from all adapters. If your adapter
does not support it, this column will not be visible.
data transfer rate in the min/average/max format. The average value
is calculated since the data in this table was last reset.
the number of packets where the Retry flag was set.
the number of packets for which the Fragmented flag was set.
the number of Data packets for which the Encrypted flag was
CRC Errors –
the number of packets with CRC errors. See Understanding CRC and ICV
a detailed explanation.
You can show or hide individual columns by right-clicking on list
header or using the View => Channels
The column order can be changed by dragging the column header to a
new location. Right-clicking on channel list brings up a menu with
the following commands:
Save Channels As –
allows you to save the contents of the Channels tab as an HTML
Clear Channels –
clears the table.
More Statistics – shows
a window with data transfer and protocol distribution