Several Infinity and Velocity Singles have a 'Calibrate' mode that allows you to re-calibrate sensors such as airspeed/altitude and battery current zero. To enter calibration mode: 1. Press the knob repeatedly DURING startup of the instrument: 2. ...
The Infinity and Velocity Singles Reference Ground wire is always labelled as such in the manual, and there might be one on each connector. They can be tied together and run to the Engine Block. Important: Read this article on why an Engine Block ...