Button labels Click – – Press – Enter – White - mode is OFF, Green - mode is ON Momentarily push and release any knob or button Push and hold any knob or button for 2 seconds and release Click knob labeled [ Enter ] Basic Operation Barometer adjust Track bug adjust Altimeter bug adjust – – – Altimeter bug cancel Dimmer function – – Nav mode Nav mode cancel – – Rotate right knob Rotate left knob Click ALT button, bug will synchronize to nearest 100 feet Rotate right knob to select new altitude (