How do I use the Z-input on my oscilloscope (full range of contrast / brightness)?
Looks lke you have a fine GREY SCALE modulation, already.
The black is black.
You just want more peak green.
To valuate the dynamic range, program your DAC to produce 0000, 0001, 0010, 0100, 1000, 1100, 1110, and 1111.
This should let you evaluate the visual results of an &quot;S&quot; or GAMMA curve.
GAMMA is often programmable, with shape highly important for acceptable images.