kopia lustrzana https://github.com/jamescoxon/dl-fldigi
123 wiersze
4.1 KiB
Plaintext
123 wiersze
4.1 KiB
Plaintext
/**
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\page signal_browser_page Signal Browser
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\tableofcontents
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<br>
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PSK and RTTY signals can be viewed in a multi-channel context.
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You can open an embedded or a separate dialog to access the
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browser. These browsers can help to locate a signal of interest
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on a busy band. The browsers can be visible at any time, but are only
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active when fldigi is in one of the PSK or RTTY modes. Open the external
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by clicking on the <b>View/Signal browser</b> menu item.
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<br>
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\image html view-menu.png "View Menu"
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\image latex view-menu.png "View Menu" width=2.0in
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<br>
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It looks like this:
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<br>
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\image html browser-panel.png "Browser Panel"
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\image latex browser-panel.png "Browser Panel" width=4.25in
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<br>
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Toggle the visibility of the embedded viewer by selecting the
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<b><i>View/Hide Channels</i></b> on the same menu list. Your main fldigi
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screen then opens a browser panel on the left side of the Tx/Rx panel(s).
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<br>
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\image html main-dialog-browser.png "Main Dialog Browser"
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\image latex main-dialog-browser.png "Main Dialog Browser" width=6.0in
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<br>
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This panel can be resized horizontally by dragging the interface between the
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browser and the Rx panel to the left and right. You can drag all the way to
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the left to close the panel (or use the menu button). The drag to the
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right is limited to prevent sizing the Rx/Tx panels below their allowable
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limits.
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<br>
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The browser can decode up to 30 simultaneous signals. As each signal is
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acquired within a 100 Hz channel width it is printed on the associated
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line. The user can elect to have each line annotated with
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<br>
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a channel number,<br>
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the waterfall audio frequency,<br>
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the transceiver HF frequency + waterfall, or<br>
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no annotation.<br>
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<br>
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Left click on a line of received text to move the waterfall frequency
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and Rx panel tracking to that signal. The contents of the line of
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text is transferred to the Rx text widget, and the main signal processing loop
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begins to track and decode that signal. Right click on a line of received
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text and that line is cleared and the channel reset for a new
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detection. You may have to do this occasionally if the detector
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for that channel has locked on to a sideband of a PSK signal.
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This is most likely to occur when the received signal as a marginal or
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bad IMD. Use the ><b>Clear</b> button to clear and reset all of the
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channels. Channel signal detection and processing should restart
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immediately.
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<br>
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Configuring the browser:
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<br>
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\image html config-ui-browser.png "Browser Configure"
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\image latex config-ui-browser.png "Browser Configure" width=5.0in
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<br>
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<ol>
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<li>select the number of 100 Hz channels you want visible</li>
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<li>select the start frequency for the browser (your transceiver may not
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rx signals below this value)</li>
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<li>select the inactivity timeout for the browser. After this
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number of seconds the channel will be cleared and prepared for the next
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detection cycle.</li>
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<li>select whether you want a Marque type of continuous scrolling, or simply
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clear the line when it is filled.</li>
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<li>select what kind of label annotation you want on each line</li>
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<li>select the font and font size to be used in the browser</li>
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<li>You can enter any text you want to search for in the <b>Seek
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Regular Expression</b> widget.
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<br>
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This text can be a simple text snippet such as "CQ" or any
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regular expression. With a regex you can specify a more generic pattern,
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which means that you can match more things and your search is somewhat noise
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tolerant. Here is an example for a CQ from a US station (should match most
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callsigns):
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<br>
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<br>
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cq.+[aknw][a-z]?[0-9][a-pr-z][a-z]{1,2}
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<br>
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<br>
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This says "cq followed by at least one character, followed by one A,
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K, N, or W, followed by an optional letter, followed by a digit,
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followed by a letter that is not q, followed by one or two letters".
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The search is case-insensitive.
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<br>
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All plain text is a valid regular expression, unless you really had been
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looking for these metacharacters:
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<br>
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<br>
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.[{()\*+?|^$
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<br>
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<br>
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These will have to be escaped with a backslash.<br></li>
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</ol>
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<br>
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<br>
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\ref signal_browser_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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