On 01/12/2015 20:33, David Michael Gaytko // WD4KPD wd4kpd@... [WSJTX] wrote:
what is happening when this Bias is applied ?
zero offset adds a constant amount onto all values, gain multiplies each value by a constant. The two constants are set by the sliders.
Another factor is that the final values have to be mapped onto a finite number of screen pixels so there is a small truncation or rounding error (I'm not sure which) in displaying the results.