31 PANEL DESCRIPTION Programmable function keysThe following functions can be assigned to [UP], [DOWN],[P0], [P1], [P2], [P3] and [P4] programmable function keys.Consult your Icom dealer or system operator for details con-cerning your transceivers programming.If the programmable function names are bracketed in the fol-lowing explanations, the specific key is used to activate thefunction depends on the programming.CH UP AND DOWN KEYS➥ Push to select an operating channel.➥ Push to select a transmit code channel after pushing [TXCode CH Select].➥ Push to select a DTMF channel after pushing [DTMFAutodial].➥ Push to select a scan group after pushing and holding[Scan A Start/Stop]/[Scan B Start/Stop] for 1 sec.ZONE KEYPush this key, then select the desired zone using [CH Up]/[CH Down].What is “zone”?—The desired channels are assignedinto a zone according to the intended use for grouping.For example, ‘Staff A’ and ‘Staff B’ are assigned into a“Business” zone, and ‘John’ and ‘Cindy’ are assigned into a“Private” zone.SCAN A START/STOP KEY➥ This key’s operation depends on the Power ON Scan setting.When the power ON scan function is turned OFF;Push to start and cancel scanning operation.When the power ON scan function is turned ON;Push to pause scanning, then resumes scanning after aspecified time period has passed.➥ Push and hold this key for 1 sec. to indicate the scan group,then select the desired group using [CH Up]/[CH Down].SCAN B START/STOP KEY➥ Push to start and cancel scanning operation. Scanresumes after a specified time period has passed whenscan is cancelled except for this key.➥ Push and hold this key for 1 sec. to indicate the scan group,then select the desired group using [CH Up]/[CH Down].SCAN ADD/DEL (TAG) KEY➥ Push to add or delete the selected channel to/from thescan group.1. Push to indicate the scan group, then push [CH Up] or [CHDown] to select the desired group.2. Push to add or delete the channel to/from the selected scangroup.3. Push and hold for 1 sec. to exit the scan group selection mode.➥ Push this key while scan is paused (a signal is detected)on a channel (except for priority channel,) the channel iscleared from the scan group.Depending on the setting, the cleared channel is addedto the scan group again after the scan is cancelled.