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Introduction |
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Using the Program |
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VoIP Analysis |
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Advanced Topics |
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Information |
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Understanding Signal Strength
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Wireless signal strength is traditionally measured in either percentile or dBm (the power ratio in decibels of the measured power referenced to one milliwatt.) By default, CommView for WiFi displays the signal strength in percentile. The level of 100% is equivalent to the signal level of -35 dBm and higher, e.g. both -25 dBm and -15 dBm will be shown as 100%, because this level of signal is very high. The level of 1% is equivalent to the signal level of -95 dBm. Between -95 dBm and -35 dBm, the percentage scale is linear, i.e. 50% is equivalent to -65 dBm.
If measurements in dBm are preferable, you can switch to dBm by using the Display signal level in dBm option in Settings => Options => Decoding. When Display signal level in dBm is turned on, the signal strength will be shown in dBm on the Nodes, Channels, and Packets tabs, as well as in the Scanner window. In the packet decoder tree, the level is always shown in both percentile and dBm.
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