kopia lustrzana https://github.com/jamescoxon/dl-fldigi
44 wiersze
1.2 KiB
Plaintext
44 wiersze
1.2 KiB
Plaintext
/**
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\page fft_scan_page Configure FFT Scan
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\tableofcontents
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<br>
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\image html config-modem-scan.png "Scan Configuration Panel"
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\image latex config-modem-scan.png "Scan Configuration Panel" width=5.5in
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<br>
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\# scans: The number of scans to perform (averaging).
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db Range: The dynamic range in dB (vertical scale).
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\section sFftScan FFT Scan
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Analysis tool used to evaluate Rx/Codec signal path. Can be used to measure
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noise floor of the codec; view the transceiver passband characteristics,
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Rx signal spectrum, etc.
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<br>
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\image html fcfhfacc.png "Scan results"
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\image latex fcfhfacc.png "Scan results" width=5.5in
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<br>
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The scope shows the results, both final and during the scan averaging.
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The # of scans specifies how many scans are averaged for the display. The
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dB range specifies the vertical scale as seen above. "Use relative dB"
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removes the vertical offset so that a wider range can be displayed with
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more detail.
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Left clicking any where on the waterfall restarts the scan. You can
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observe the effect on the scope display. A comma separated file is
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also generated; ~/.fldigi/fftscan.csv which can be opened with any
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spread sheet program.
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<br>
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\ref fft_scan_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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