Check the pages 14-15 of the "RDAC XF & XF MAP Installation Manual". We set up the RDAC XF with the Lightspeed Plasma (10V pulses IIRC), and it was very straight forward. Important is to have the "RPM1 High gain" : OFF and then adjust the sensitivity. The doc has some samples of the voltages and suitable trimmer positions. Worked like a charm...