WSJT-X/doc/source/controls-functions-wide-graph.txt
Joe Taylor fd4bc2d602 Split the asciidoc source for WSJT-X User's Guide into many
smaller files, by section and sub-section.  

Also extensive editing up through section 7.  Sections 6.2, 8, and
beyond definitely need work.  Other polishing is also desirable, and
maybe also some additions and/or changes.



git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@3656 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2014-01-23 20:12:12 +00:00

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// Status=review
The following controls appear at the bottom of the Wide Graph window:
image::images/wide-graph-controls.png[align="left",alt="Wide Graph Controls"]
* *FFT Bins/Pixel* controls the displayed frequency resolution. Set
to 1 for the highest possible resolution, or to higher values to
compress the spectral display. Normal operation with a convenient
window size works well at 2 to 8 bins per pixel.
* *N Avg* is the number of successive FFTs to be averaged before
updating the spectral display. Values around 5 are suitable for
normal JT9 and JT65 operation.
* *Gain* and *Zero* control the scaling and reference level for
waterfall colors. Values around 0 for both parameters are usually
about right, depending on the input signal level and your own
preferences.
* *JT65 nnnn JT9* sets the dividing point for wide-band decoding of
JT65 and JT9 signals in JT9+JT65 mode. The decoder looks for JT65
signals below nnnn Hz and JT9 signals above that frequency.
* *Current / Cumulative* controls the graphical display in the bottom
one-third of the Wide Graph window. ** Current is the average
spectrum over the most recent N Avg FFT calculations. ** Cumulative
is the average spectrum since the start of the current Rx sequence.
* With the exception of *JT65 nnnn JT9*, controls on the Wide Graph
window affect only the graphical displays — they have no effect
on the decoding process.