After the completion of a site survey with Ekahau Site Survey tool, using the default color palette, it is noted that multiple areas are shown as white on the heat map when viewing 5 GHz signal…

Question

Options

• AThe area is below the minimum threshold configured on the tool.
• BThe area is below the detectable level and indicates no RF signal.
• CThe area is below -100 dBm at coverage cell edge.
• DThe area is below -67 dBm at coverage cell edge.

• A
  89% (54)
• B
  3% (2)
• C
  7% (4)
• D
  2% (1)

Explanation

In Ekahau Site Survey (and most RF visualization tools), the color palette has a configurable minimum threshold. Areas displayed in white indicate that the measured or predicted signal strength falls below the minimum threshold value set in the tool - not necessarily that there is zero RF signal. The white simply means 'below the floor of the display scale.' This is an important distinction: the area might have some signal, but it is below the threshold the engineer set as acceptable. The default threshold in Ekahau is typically -85 dBm for visibility, meaning white areas have signal weaker than that setting. This is not the same as no signal at all (option B), nor is it specifically -100 dBm or -67 dBm unless the engineer configured those thresholds.

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