DP405 Digital Two-way Radio
User Manual
12
7
Features and Operation
7.1 TOT (time-out-timer)
TOT prevents the user from occupying the channel for too long. If the continuous transmission exceeds the
duration set by dealer, the radio will stop transmitting and sound alarm. For stopping alarm, release PTT button.
For transmission again, please press PTT button after a certain time interval (interval set by dealer).
If the dealer set pre-alarm feature, pre-alarm will sound before TOT time is up.
7.2 Channel Scan
Channel scan searches channels with signals. When the channel scanned has signals, the radio will stay on
this channel for communication. Scan method is carrier control scan.
By pressing the Scan shortcut key, the radio can scan the scan list related to the current channel. When the
radio is in scan state, press the Scan shortcut key again to stop the scan.
7.3 Scan the Reply Message
When the radio is scanning, press PTT button and the radio will transmit and talk on the predefined channel.
This channel is set by dealer.
7.4 Priority Scan
When there is priority scan set in the scan list, the priority scan will be automatically enabled when the radio
starts the scan feature. The priority scan mode is cycle scan, and it scans priority channel every time when it
scans a conventional channel. For example, if there are channel 1, 2, 3, 4 in the scan list and channel 2 is
priority channel, the scan cycle will be 1->2->3->2->4->2->1.
