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WFM demod: updated documentation

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f4exb 2019-06-07 01:34:50 +02:00
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4 changed files with 9 additions and 9 deletions
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plugins/channelrx/demodwfm/readme.md
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@ -12,33 +12,33 @@ This plugin can be used to listen to a wideband or narrowband FM modulated signa
Use the wheels to adjust the frequency shift in Hz from the center frequency of reception. Left click on a digit sets the cursor position at this digit. Right click on a digit sets all digits on the right to zero. This effectively floors value at the digit position. Wheels are moved with the mousewheel while pointing at the wheel or by selecting the wheel with the left mouse click and using the keyboard arrows. Pressing shift simultaneously moves digit by 5 and pressing control moves it by 2. Use the wheels to adjust the frequency shift in Hz from the center frequency of reception. Left click on a digit sets the cursor position at this digit. Right click on a digit sets all digits on the right to zero. This effectively floors value at the digit position. Wheels are moved with the mousewheel while pointing at the wheel or by selecting the wheel with the left mouse click and using the keyboard arrows. Pressing shift simultaneously moves digit by 5 and pressing control moves it by 2.
<h3>3: Channel power</h3> <h3>2: Channel power</h3>
Average total power in dB relative to a +/- 1.0 amplitude signal received in the pass band. Average total power in dB relative to a +/- 1.0 amplitude signal received in the pass band.
<h3>4: Level meter in dB</h3> <h3>3: Level meter in dB</h3>
- top bar (green): average value - top bar (green): average value
- bottom bar (blue green): instantaneous peak value - bottom bar (blue green): instantaneous peak value
- tip vertical bar (bright green): peak hold value - tip vertical bar (bright green): peak hold value
<h3>5: RF bandwidth</h3> <h3>4: RF bandwidth</h3>
This is the bandwidth in kHz of the channel signal before demodulation. It can be set in steps as 12.5, 25, 40, 60, 75, 80, 100, 125, 140, 160, 180, 200, 220 and 250 kHz. This is the bandwidth of the channel signal before demodulation. It can be varied from 10 to 300 kHz using the thumbwheels.
<h3>6: AF bandwidth</h3> <h3>5: AF bandwidth</h3>
This is the bandwidth of the audio signal in kHz (i.e. after demodulation). It can be set in continuous kHz steps from 1 to 20 kHz. This is the bandwidth of the audio signal in kHz (i.e. after demodulation). It can be set in continuous kHz steps from 1 to 20 kHz.
<h3>7: Volume</h3> <h3>6: Volume</h3>
This is the volume of the audio signal from 0.0 (mute) to 10.0 (maximum). It can be varied continuously in 0.1 steps using the dial button. This is the volume of the audio signal from 0.0 (mute) to 10.0 (maximum). It can be varied continuously in 0.1 steps using the dial button.
<h3>8: Squelch threshold</h3> <h3>7: Squelch threshold</h3>
This is the squelch threshold in dB. The average total power received in the signal bandwidth before demodulation is compared to this value and the squelch input is open above this value. It can be varied continuously in 0.1 dB steps from 0.0 to -100.0 dB using the dial button. This is the squelch threshold in dB. The average total power received in the signal bandwidth before demodulation is compared to this value and the squelch input is open above this value. It can be varied continuously in 0.1 dB steps from 0.0 to -100.0 dB using the dial button.
<h3>9: Audio mute and select audio output</h3> <h3>8: Audio mute and select audio output</h3>
Left click on this button to toggle audio mute for this channel. The button will light up in green if the squelch is open. This helps identifying which channels are active in a multi-channel configuration. Left click on this button to toggle audio mute for this channel. The button will light up in green if the squelch is open. This helps identifying which channels are active in a multi-channel configuration.

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plugins/channelrx/demodwfm/wfmplugin.cpp
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@ -10,7 +10,7 @@
const PluginDescriptor WFMPlugin::m_pluginDescriptor = { const PluginDescriptor WFMPlugin::m_pluginDescriptor = {
QString("WFM Demodulator"), QString("WFM Demodulator"),
QString("4.5.2"), QString("4.9.1"),
QString("(c) Edouard Griffiths, F4EXB"), QString("(c) Edouard Griffiths, F4EXB"),
QString("https://github.com/f4exb/sdrangel"), QString("https://github.com/f4exb/sdrangel"),
true, true,