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The histogram window, like the waveform window, contains a section of controls which
can be displayed or hidden on the right hand side of the window. Please see the above
section on the Waveform window for details of revealing the window controls. Again like
the waveform window, the most commonly used controls are available from the Colour
Mode menu.
Like with the waveform window, the top control in the right hand bar is the most
important, and controls the format of the histograms The available modes are
YCbCr Histograms are generated in YCbCr space
YCbCr (SD) As above but after conversion to true SD levels
RGB Histograms are generated in RGB space
Composite Histograms are generated in Composite colour space.
In each of the four modes, check boxes appear so that a subset of the items can be
displayed if required. Items may be displayed stacked vertically above each other (as
shown here) or in parade form.
The X position and X magnification sliders may be used to zoom in on a portion of the
waveform. It is also possible to enter numbers for position and gain into the boxes, or
click on the x2, x4 etc buttons.
The vertical range sets the scale of the graph, and can be adjusted to suit your exact
data, but clicking the Auto button will produce a suitable scale very easily. For most data,
the best results will be obtained by clicking the ‘Log’ button, which applies a logarithmic
scaling to the vertical axis (before pressing the Auto button).
From the Options menu, you can open the Look and Feel configuration dialogue, in
exactly the same fashion as for the waveform window. This lets you specify the colour
for each different possible Histogram element, including the Graticule and the cursor.
Vectorscope Window
The vectorscope window, like the waveforms and the histograms, has a section of
controls that can be revealed and hidden. However all of these controls for the
vectorscope are automatically adjusted as the region of interest is changed. Accordingly
these controls will only be required very occasionally.