kopia lustrzana https://github.com/jamescoxon/dl-fldigi
59 wiersze
1.9 KiB
Plaintext
59 wiersze
1.9 KiB
Plaintext
/**
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\page psk_configuration_page PSK Configuration
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\tableofcontents
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\image html config-psk-general.png "Modems PSK General"
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\image latex config-psk-general.png "Modems PSK General" width=5.0in
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<br>
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You should set the acquisition search range for waterfall left click
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action. As you adjust this control you will see the red mode
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width change on the waterfall scale. You can also adjust this
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value by pointing the mouse to the waterfall. Hold down the
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Control key and rotate the mouse wheel. The search routine which
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finds the PSK signal operates on a s/n threshold detector as well as
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recognizing the PSK phase modulation. You can adjust the
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acquisition signal to ratio threshold for the search routine.
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<br>
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The PSK decoder estimates the signal to noise ratio, S/N, and the
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intermodulation distortion, IMD, of the received signal. This
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measurement is valid during periods when the other station is
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transmitting the idle signal. The estimates are displayed on the
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status bar. You can control how these values are displayed; <b>clear</b>
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or <b>dim</b> after NN seconds. Setting the seconds to 0 disables the
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clear/dim action.
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<br>
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Fldigi has a multi channel browser than can display simultaneous reception of
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up to 30 PSK signals. The browser is described here:
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<br>
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8psk (8 phase states) does not use AFC for signal acquistion or tracking. RsID
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or operator adjustment of tracking point is necessary to align the decoder with
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the received signal. This mode includes the optional use of a pilot tone. The
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level of the pilot tone can be set relative to the total signal power.
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<br>
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This table shows the amount of transmit power used by the pilot tone
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<br>
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<center>
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dB | -20 | -26 | -29 | -32 | -36 | -40
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:------:|:----:|:----:|:----:|:----:|:----:|:----
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Pwr Lvl | 10% | 5% | 3.5% | 2.5% | 1.6% | 1.0%
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</center>
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<br>
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\ref signal_browser_page "Signal Browser"
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<br>
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<br>
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\ref psk_configuration_page "Return to Top of Page"
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<br>
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\ref main_page "Return to Main Page"
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*/
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