WSJT-X/doc/source/controls-functions-wide-gra...

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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.
- *Palette* lets you select from a wide range of waterfall color
palettes.
- 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.