Frequencyscan:Shortpressthefrequencysearchkeyoncetoenterthefrequencysweep
interface.
Pressandholdfor1secondtostartthesweep,andthesweepresultwillbedisplayedafter
3seconds.Thedifferentcolorsinthescreenindicatethecurrentstatusofeachfrequency
pointasfollows: