WSJT-X/doc/user_guide/controls-functions-wide-graph.adoc
Bill Somerville 8440dd5af0 First attempt at adding the WSJT-X user guide to the CMake build
These documentation source files are not  the one true version, just a
copy for testing purposes. DO NOT EDIT THESE FILES.

To use this  on Windows you will need a  working asciidoc installation
and  the  path  to  it  must be  included  in  your  CMAKE_PREFIX_PATH
(probably via a  local CMake tool chain file). At  the time of writing
the official  asciidoc package does  not work on Windows.   The latest
development  master does  however  work,  it can  be  downloaded as  a
snapshot ZIP archive from here:

  https://github.com/asciidoc/asciidoc/archive/master.zip

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5316 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-04-28 18:37:50 +00:00

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// Status=review
The following controls appear at the bottom of the Wide Graph window.
With the exception of *JT65 nnnn JT9*, they affect only the graphical
displays — they have no effect on the decoding process.
image::images/wide-graph-controls.png[align="center",alt="Wide Graph Controls"]
- *Bins/Pixel* controls the displayed frequency resolution. Set this
value to 1 for the highest possible resolution, or to higher numbers
to compress the spectral display. Normal operation with a convenient
window size works well at 2 to 8 bins per pixel.
- *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 the specified frequency and JT9 signals above it.
- *Start nnn Hz* sets the low-frequency starting point of the
waterfall frequency scale.
- *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. Adjust *N Avg* to make the waterfall
move faster or slower, as desired.
- *Zero* and *Gain* 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.
- A dropdown list below the *Palette* label lets you select from a
wide range of waterfall color palettes.
- Click *Adjust* to activate a window that allows you to create a
user-defined palette.
- Check *Flatten* if you want _WSJT-X_ to compensate for a sloping or
uneven response across the received passband.
- Select *Current* or *Cumulative* for the spectrum displayed 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 present UTC minute.