Signal to Noise Ratio report reveals lowest overall radio frequency (RF) signal-to-noise (SNR) percentages observed for the selected duration. SNR is particularly important for wireless networking for ensuring QoS for voice and other continuous media traffic over IP. When measured in dB, SNR should fall between 25 and 40 dB —where:

  • SNR >= 40dB. Excellent.
  • 25dB < SNR < 40dB. Good.
  • SNR < 25dB. Poor.

SNR is calculated by subtracting the wireless signal strength from that of the noise floor. Poor signal to noise ratio can occur due to hardware transmit issues, nearby devices emitting radio frequency interference (RFI), and other sources of higher than normal RFI present in the ambient that combine to contribute to the normal background noise also referred to as the noise floor.

Understand column data

The default view of each report contains a grid with the following columns:

  • Device. Device hostname, IP address, or custom label.

  • Min. Lowest average signal to noise ratio observed during the selected interval.
  • Max. Highest average signal to noise ratio observed during the selected interval.
  • Avg. Average signal to noise ratio for the selected time interval.
Note: Percentages reported likely will never reach 0 or 100. Generally, An SNR of 40% is considered good. Anything less than 20% is considered poor.

Generate a report

Choose Device. Choose one or more host devices.

Choose time constraints. (,) Choose times. (For recently observed measurements, select Last Polled from the Date Range drop down list.)

Filter and reduce by row and by column. Sort and remove columns, group rows based on specific column values, and remove unwanted information from the table.

  • Export report data

    Report data can be exported from WhatsUp Gold, reused, and distributed in multiple formats. Select Expand () from the Dashboard Options () menu. After the report has been expanded, select the Export Data icon to access the following options:

    • HTML. Generate and download a .htm file presenting your report data as it appears in the WhatsUp Gold user interface.
    • Excel. Generate and download a .xml spreadsheet containing your report data.
    • CSV. Generate and download a .csv file containing your report data.
    • Text. Generate and download a .txt file containing your report data.
    • Schedule Export. Set a recurring date and time, format, and email destination for report data export.