Press the Menu button and select the measurement mode by tapping its icon on the touch screen.
Menu Button Screen
You can also press the Shift key then the Mode (9) key, select the measurement from the list using the rotary knob or the Arrow keys, and then press Enter.
Measurement Mode Selector List
Note that the shortcut icons and modes include a selection for each application option installed in the instrument, as shipped from the factory. The Land Mobile Radio modes are: NBFM, DMR, P25, P25p2, NXDN, dPMR, PTC (ITCR and ACSES), and TETRA.