DP405 Service Manual
Whisper
Enable Whisper and talk to the mic, and the called party can hear the voice clearly.
Alert Tone
The aler tone can be set by PC software and you can enable/disable all kinds of alert tone.
Power-saving mode
Enable/disable the power-saving mode, which extends the battery use duration
Voice Encryption
Enable/diable Voice Encryption feature on the current channel.
4.5. TOT （Time-out-timer）
This feature prevents long occupation on the channel. If the continuous transmitting time exceeds the
preset time, the radio will stop tranmistting and sound alert tone. To stop the alert tone, please release the
PTT key. For the next transmitting, please press the PTT key after a certain interval (set by dealer). If the
pre-alert feature is enabled by dealer, a pre-alert will sound right before the TOT time, indicating the coming
tramission limit.
4.6. Emergency Alarm
Press Emergency Alarm programmable key during emergency. The emergency alarm is composed of two
parts: alarm type, which specifies voice and sound reaction during emergency, and alarm mode, which
specifies the transmission contents sent to other members during emergency. To disable emergency alarm,
please press emergency alarm exit shortcut key.
Alarm Type:
None: no alarm feature (default);
Siren Only: only sounds alarm on the radio;
Conventional: sounds alarm with voice and light alert and other radio response can be received;
Secret: no voice or light alert and it cannot receive response from other radios;
Secret with voice: no voice or light alert but it can receive response from other radios.
Alarm Mode:
Emergency Alarm: after the alarm is initiated, the radio sends only emergency alarm. It exits the alarm
status afterwards.
Emergency Alarm+Emergency Call: the radio sends emergency alarm but also sends emergency call if
PTT key is pressed.
Emergency Alarm + Background Tone Auto Transmission: the radio sends emergency alarm and also
sends automatic background tone periodically.
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