7Getting StartedSystem ModeIn the System mode you can view software versions, setup the Nav and Com functions,and record VOR test information. See the Advanced Operations section for more details.OBS ModePress the OBS button. If the annunciator above the button lights, then you may use theLARGE and SMALL knobs to adjust the Omni Bearing Selector.Recalling FrequenciesIn the Com or Nav modes, press SEL to gain access to the available frequency listsof each mode. Turn the LARGE and SMALL knobs to view the available channels.1. Press COM or NAV to go to the desired mode.2. Press SEL to go to the frequency database.3. Turn the LARGE knob to review the type of frequency.4. Turn the SMALL knob to display the available channels in the selected type.5. Press ENT to put the displayed channel into the Standby position or press FLIP/FLOP to put thedisplayed channel into the Active position. You can press SEL again to cancel selection.