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.

了解列数据

每个报告的默认视图包含一个有以下列的网格：

  • 设备。设备主机名、IP 地址或自定义标签。

  • 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.
注： 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.

  • 导出报表数据

    报告数据可以从 WhatsUp Gold 导出、重复使用和以多种格式分发。从“仪表板选项”() 菜单中选择展开 ()。在展开报告后，选择“导出数据”图标以访问以下选项：