We cover the display layout in the README, but we don't explain what the values of each entry mean. It would help users if we documented this better. Here is a very quick rundown for starters:
top line
When not in CW mode, the top line displays the current active settings slot (00-10), and the name of the slot (SSB etc, or Empty if the slot contains no settings.
When in CW mode, the decoded CW scrolls across the top line, from right to left.
Status line
The status line is always displayed, and the each status item/position has a fixed function. They are, in order from left to right:
Input volume
Shows 'bars' indicating the input signal volume level. A single '.' is the lowest level. Four 'bars' is a high level. If input clipping (volume too high) is detected then an ! will appear for 0.5s.
Bandpass filter
Indicates which bandpass filter is active. Values are:
-> passthru (not actually off, but 'broadbanded')
S SSB
C CW
A AM
F FM
Noise blanker
Shows if the noise blanker is on or off. Shows - for off, and an 'impulse' type character (similar to ~ or a slanted N) when active.
Auto notch
Shows if the noise blaner is enabled or not. Shows - when it is off, and a stylised V when it is on.
AGC mode
Shows which, if any, AGC (like) method is in use. Values are:
- Off (no AGC)
T software 'tracking' mode (tries to match the peak output volume with the peak input volume)
5 SGTL5000 hardware AGC mode (the AGC in the audio codec hardware chip). Is not an AGC as you might think of it - there is not minimum level squelch type clip. Fundamentally it will try to maintain an even maximum volume without clipping.
Noise reduction
Shows which noise reduction algorithm is active. Values are:
BYP complete bypass mode (may not be possible to configure currently)
Off noise reduction is turned off
LMS LMS reduction mode
Kim Kim reduction mode
fnr fnr reduction mode
fnA fnrA reduction mode
Spc Spectral reduction mode
LLM LLMS reduction mode
CPU utilisation
Shows a rough estimate of the amount of CPU time that is being consumed doing the processing. Generally a fairly low number.
CW tuning aid
A rough guide to help tune in the CW decoder. The CW decoder 'listens' to the centre frequency defined for the active bandpass filter. The tuning aid listens for the 'loudest' tone in the signal, and shows one of five symbols to reflect how the detected tone relates to the bandpass:
<< Tone much too low
< Tone too low
x Tone matched
> Tone too high
>> Tone much too high
CW WPM
Shows the current detected CW word per minute speed as detected by the decoder that is active. Note, if using the Bayesian decoder there can be some delay between signals being heard and the WPM and decoded characters being printed.
We cover the display layout in the README, but we don't explain what the values of each entry mean. It would help users if we documented this better. Here is a very quick rundown for starters:
top line
When not in CW mode, the top line displays the current active settings slot (00-10), and the name of the slot (
SSBetc, orEmptyif the slot contains no settings. When in CW mode, the decoded CW scrolls across the top line, from right to left.Status line
The status line is always displayed, and the each status item/position has a fixed function. They are, in order from left to right:
Input volume
Shows 'bars' indicating the input signal volume level. A single '.' is the lowest level. Four 'bars' is a high level. If input clipping (volume too high) is detected then an
!will appear for 0.5s.Bandpass filter
Indicates which bandpass filter is active. Values are:
->passthru (not actually off, but 'broadbanded')SSSBCCWAAMFFMNoise blanker
Shows if the noise blanker is on or off. Shows
-for off, and an 'impulse' type character (similar to~or a slantedN) when active.Auto notch
Shows if the noise blaner is enabled or not. Shows
-when it is off, and a stylisedVwhen it is on.AGC mode
Shows which, if any, AGC (like) method is in use. Values are:
-Off (no AGC)Tsoftware 'tracking' mode (tries to match the peak output volume with the peak input volume)5SGTL5000 hardware AGC mode (the AGC in the audio codec hardware chip). Is not an AGC as you might think of it - there is not minimum level squelch type clip. Fundamentally it will try to maintain an even maximum volume without clipping.Noise reduction
Shows which noise reduction algorithm is active. Values are:
BYPcomplete bypass mode (may not be possible to configure currently)Offnoise reduction is turned offLMSLMS reduction modeKimKim reduction modefnrfnr reduction modefnAfnrA reduction modeSpcSpectral reduction modeLLMLLMS reduction modeCPU utilisation
Shows a rough estimate of the amount of CPU time that is being consumed doing the processing. Generally a fairly low number.
CW tuning aid
A rough guide to help tune in the CW decoder. The CW decoder 'listens' to the centre frequency defined for the active bandpass filter. The tuning aid listens for the 'loudest' tone in the signal, and shows one of five symbols to reflect how the detected tone relates to the bandpass:
<<Tone much too low<Tone too lowxTone matched>Tone too high>>Tone much too highCW WPM
Shows the current detected CW word per minute speed as detected by the decoder that is active. Note, if using the Bayesian decoder there can be some delay between signals being heard and the WPM and decoded characters being printed.