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tweak snr wording

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Steve Lewis AB7PA 2022-06-12 08:34:14 -07:00 committed by WU2S
parent 3441e4766c
commit f29b5ad137
1 changed files with 1 additions and 10 deletions
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11
arednGettingStarted/node_status.rst
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@ -38,16 +38,7 @@ Node Settings Summary
The area under the display controls shows both configuration and network status information. The left column contains the IP address details for the network interfaces on this node, as well as the SSID, channel, and bandwidth settings.
The right column contains the Signal Strength readings and other attributes of your node. The **Signal/Noise/Ratio** shows the strongest neighbor radio signal strength in :abbr:`dBm (decibels relative to one milliwatt)` from all connected stations, and it is available only when the node is connected by :abbr:`RF (Radio Frequency)` to a mesh network. Click these links for further information about `Signal to Noise Ratio <https://en.wikipedia.org/wiki/Signal-to-noise_ratio>`_ and values measured in `decibels <https://en.wikipedia.org/wiki/Decibel>`_. There are many factors that impact the network throughput you can expect to achieve, but as a general rule the higher the Signal-to-Noise ratio the better the throughput for your RF links. Some basic "rules of thumb" are shown below:
====== =================================================
SNR Rule of Thumb for potential throughput
====== =================================================
< 10dB likely will not be adequate to pass data reliably
15dB possible to support link rates of 5-10 Mbps
25dB possible to support link rates of 25-40 Mbps
35dB possible to support link rates of 50 Mbps+
====== =================================================
The right column contains the Signal Strength readings and other attributes of your node. The **Signal/Noise/Ratio** shows the strongest neighbor radio signal strength in :abbr:`dBm (decibels relative to one milliwatt)` from all connected stations, and it is available only when the node is connected by :abbr:`RF (Radio Frequency)` to a mesh network. Click these links for further information about `Signal to Noise Ratio <https://en.wikipedia.org/wiki/Signal-to-noise_ratio>`_ and values measured in `decibels <https://en.wikipedia.org/wiki/Decibel>`_. There are many factors that impact the network throughput you can expect to achieve, but as a general rule the higher the Signal-to-Noise ratio the better the throughput for your RF links.
Below the Signal Strength readings are the node's **firmware version** and hardware **model**. The **system time** is displayed, as well as the **uptime**, which is the time since the last reboot. If an Internet connection or a local :abbr:`NTP (Network Time Protocol)` server is available, your node's NTP client will sync its time with that time source.