The following indicators are part of LISNR Radius communications:
Signal-to-Noise Ratio (SNR): Indicates in decibels (dB) the amount of interfering noise relative to the received strength of the LISNR Tone.
Error Vector Magnitude (EVM): Gives an indication in decibels (dB) of how challenging it was for the LISNR Tone to be received by the LISNR Radius SDK.
Header Quality: EVM value indicating the quality of the Header.
Payload Quality: EVM value indicating the quality of the Payload.
Any LISNR Tone will report signal strength but only PKAB2/PKAB2_wideband will report quality.
Signal strength and signal quality metrics will be provided with one of the following indicators:
Note:
Default values for an unknown signalToNoiseRatio will give the default value of -60.0
Note:
Default values for an unknown signalToNoiseRatio will give the default value of 60.0
If you are experiencing either poor signal strength or quality, the following actions are recommended:
Transmit at a higher volume.
Reduce the distance between the transmitting speaker and the receiving microphone.
Angle the transmitting speaker and receiving microphone towards each other and ensure there is nothing obstructing the line of sight.