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diff --git a/docs/software.html b/docs/software.html index 9614186..731899d 100644 --- a/docs/software.html +++ b/docs/software.html @@ -277,6 +277,63 @@ It can be used to check a headset. Everything that is spoken into the microphone should appear on the headphone. </p> +<p class="toppic"> +On-screen displays +</p> + +<center><img src="display-wave.png"/></center> + +<p> +Essentially for monitoring the input level is the 'w' key. +You will get an ASCII art plot of received audio signal. +Press 'w' again to turn off this view. +</p> + +<center><img src="display-measurements.png"/></center> + +<p> +To check measurements like input level and quality, press the 'm' key. +You will get an ASCII art plot of differen bar graphs. +They show tone / frame level and quality. +The green bar shows the current level. +The yellow marker shows the last/peak/average level. +The light blue marker shows the target level. +Some measurement like RF level, frequency offset and peak deviation are only available with SDR. +Press 'm' again to turn off this view. +</p> + +<center><img src="display-iq.png"/></center> + +<p> +Only works with SDR: +You can monitor IQ data by pressing 'q' key. +You will get an ASCII art plot of received IQ data. +Press 'q' again and you will get a logarithmic view of IQ vectors. +Press 'q' again to turn off this view. +Please monitor this view when the phone tries to call or register. +If the dots are yellow, or red, the received signal may overdrive the ADC. +Especially when the linear view shows a deformed circle (or even rectangle), reduce RX level. +</p> + +<center><img src="display-spectrum.png"/></center> + +<p> +Only works with SDR: +Press 's' to get an ASCII art graph of received frequency spectrum. +The spectrum's bandwidth is defined by the sample rate (-s) and not by the SDR sample rate! +If you don't get nice peaks, but maybe several peaks, you might over-driven the input. +Note that the peak will spread by the frequency deviation, so the peak might look noisy on the top. +If the peak is quite low, check the input gain. +Press 's' again to turn off this view. +</p> + +<center><img src="display-status.png"/></center> + +<p> +Current transceiver and call state can be viewed by pressing 'c' key. +Press 'c' again to turn off this view. +</p> + <hr><center>[<a href="index.html">Back to main page</a>]</center><hr> </td></tr></table></center> </body> |