This activated microphone state is also known as “hot mic”.
NOTICE: If you press the PTT button during hot mic, and continue to press it after the hot mic
duration expires, the radio continues to transmit until you release the PTT button.
Procedure:
1 Press the preprogrammed Emergency button.
The display shows no changes, the LED does not light up, and you hear no tones. The silent
emergency state continues until you perform the next step.
2 Press and hold the emergency button until a tone sounds to exit the silent alarm mode.
If silent emergency alarm is used with emergency call, pressing the PTT button exits the silent
mode and initiates the emergency call.
2.8.9
Special Considerations for Emergencies
The following scenarios apply during Emergency mode:
Table 2: Emergency Operations Scenarios
If... Then...
If you press the Emergency button while in a
channel that has no Emergency capability,
a low-pitched tone sounds.
If you change to a channel/mode with Emergen-
cy capability while in Emergency operation,
the Emergency Alarm and/or Emergency Call
continues on the new channel/mode.
If you change to a channel/mode with no Emer-
gency capability while in Emergency operation,
the following occurs:
• The display shows No emergency.
• A continuous low-pitched tone sounds until
you select a valid Emergency channel/mode
or until you disable the Emergency opera-
tion.
If the radio is out-of-range of the system or the
emergency alarm is not acknowledged,
a tone sounds and the display shows No ac-
knowledge.
2.8.10
Impact Detection
This feature activates Emergency mode when the radio detects a force of gravity impact or orientation
changes on the vehicle in the event of a vehicle crash or rollover. This feature also sends out the
location-based information if the GPS feature is enabled.
The radio automatically activates Impact Detected condition when the impact event meets or exceeds
a predefined threshold. The radio must stay in this condition for a preprogrammed amount of time
before the Emergency Alarm or Call is activated.
In the event of hardware failure or malfunction, the radio alternatively displays Impact HW and Error
and a tone sounds when the radio power-up. Any button press of the radio or accessory except the
programmed button for volume and backlighting functionality ceases the error message and sound.
The following scenarios affect the Emergency feature activation:
• Pressing a preprogrammed Emergency button cancels the Impact Detection sequence and enters
the Emergency mode.
6875946M01-JK
Advanced Features
70
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