kopia lustrzana https://github.com/jamescoxon/dl-fldigi
127 wiersze
4.7 KiB
Plaintext
127 wiersze
4.7 KiB
Plaintext
/**
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\page id_configuration_page RSID / Video / ID Configuration
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\tableofcontents
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\image html config-id-rsid.png "RSID Config Panel"
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\image latex config-id-rsid.png "RSID Config Panel" width=5.0in
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Fldigi offers several ways to identify the operator or mode that is being
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used. This is particularly useful when using a hard to recognize
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mode such as \ref thor_page "Thor", \ref olivia_page "Olivia"
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or \ref mt63_page "MT63".
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<br>
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\section subsec_reed_solomon_id Reed Solomon Identifier
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<b>RSID</b>, <b>R</b>eed <b>S</b>olomon <b>ID</b>entifier
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is a special transmission designed by Patrick Lindecker, F6CTE, for the
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modem program MultiPsk. It has been adapted to other modem
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programs. Fldigi's implementation is compatible with the MultiPsk
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RSID, but provides a slight variation. You can transmit RSID at
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both the beginning and end of a transmission. The detection of
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RSID normally only occurs in the near vicinity of the current waterfall
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tracking point. This cuts down on extraneous RSID detections when the
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band is crowded and several RSID signals might be present. If you want
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fldigi to search the entire waterfall for RSID signals you can do so by
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enabling the "Detector searches entire passband". You start the
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search for a signal based on RSID by using the main panel switch.
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The RSID detector is a separate decoder that operates in parallel with all
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other modem decoders. If you select the "Mark previous frequency and
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mode" a restore link will be inserted into the RX text upon detecting
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an RSID signal. Clicking on this link restores the previous
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frequency and mode of operation. You elect to disable the RSID
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upon first detection. You also have the option of just receiving
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notification when an RSID signal is detected. The notification
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occurs with a pop-up message box.
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<br>
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You can select which modes will include the transmitted RS identifier,
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and which modes will react to a received and decoded RS identifier.
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<br>
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The mode to identifier relationships are selected by pressing the associated
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"modes" button.
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\image html config-id-rx-modes.png "Receive Modes"
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\image latex config-id-rx-modes.png "Receive Modes" width=2.37in
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<br>
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\image html config-id-xmt-modes.png "Transmit Modes"
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\image latex config-id-xmt-modes.png "Transmit Modes" width=2.37in
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\section subsec_video_text Video Text
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<br>
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Transmitted video text will appear as a sequence of characters on the
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waterfall.The text can be a brief mode identifier or some user specified
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text. You can use a small font that always appears as a 2
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character wide sequence or a larger font that can be 1 to 4 characters
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wide. You should be aware that the video signal is a constant
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energy signal and the content will be spread across multiple
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characters. The highest s/n at the receiving end will be for 1
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character wide video. Small font at 2 character width is next in
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s/n performance followed by 2 character large font etc. You can
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select which modes will include the video text preamble. You can
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limit the horizontal (frequency width) of the video signal in one of
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several inclusive ways.
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<br>
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<ul>
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<li>Number of characters per row of text</li>
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<li>Constrain to be less than or equal to 500 Hz</li>
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<li>Constrain to be within the bandwidth limits of the mode in use</li>
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</ul>
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Fldigi uses abbreviated acronyms for the mode and it's characteristics
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when you are transmitting the mode ID using a video text. Here
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are two examples, one in small and the other in large font.<br>
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\image html vid-small.png "Small Font"
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\image latex vid-small.png "Small Font" width=1.2in
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<br>
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\image html vid-large.png "Large Font"
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\image latex vid-large.png "Large Font" width=2.3in
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<br>
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Notice that Olivia 16-500 is abbreviated to OL-16/500 and that the
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number of characters is limited to 8 per row. You might want to
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use the large characters by default if you routinely have QSO's with
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operators using older digital mode programs or one whose waterfall
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visual is not on a par with fldigi's.
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<br>
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\image html config-id-video.png "Video ID Config Panel"
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\image latex config-id-video.png "Video ID Config Panel" width=5.0in
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<br>
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\image html config-id-video-modes.png "Video ID Modes"
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\image latex config-id-video-modes.png "Video ID Modes" width=1.8in
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\section subsec_cw_postamble CW Postamble
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<br>
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You can transmit your callsign in CW as a postamble to all modes except of
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CW (a bit redundant to do that). You can select which modes will
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include the CW postamble.
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<br>
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<center>
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\image html config-id-cw.png "CW Postamble ID Config Panel"
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\image latex config-id-cw.png "CW Postamble ID Config Panel" width=5.0in
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<br>
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\image html config-id-cw-modes.png "CW ID Modes"
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\image latex config-id-cw-modes.png "CW ID Modes" width=1.7in
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</center>
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<br>
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\ref id_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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